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WO2018188670A1 - Appareil de détection et dispositif terminal - Google Patents

Appareil de détection et dispositif terminal Download PDF

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Publication number
WO2018188670A1
WO2018188670A1 PCT/CN2018/083219 CN2018083219W WO2018188670A1 WO 2018188670 A1 WO2018188670 A1 WO 2018188670A1 CN 2018083219 W CN2018083219 W CN 2018083219W WO 2018188670 A1 WO2018188670 A1 WO 2018188670A1
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WO
WIPO (PCT)
Prior art keywords
light
lens
image
display screen
hole
Prior art date
Application number
PCT/CN2018/083219
Other languages
English (en)
Chinese (zh)
Inventor
王帆
胡轶
熊林强
沈奥
王辉
李志勇
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710643113.7A external-priority patent/CN108734073B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2018188670A1 publication Critical patent/WO2018188670A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition

Definitions

  • the embodiments of the present application relate to the field of electronic technologies, and in particular, to a detecting device and a terminal device.
  • fingerprint recognition technologies that can be applied to display screens include optical technology, capacitance technology, and ultrasonic technology.
  • optical technology is favored for its advantages of good durability and low cost.
  • the light source since the light source emits initial light in different directions, when there are multiple light sources, the respective outgoing rays that are emitted from the display screen and reach the image sensor overlap each other, thereby causing the image sensor to be blurred.
  • FIG. 1 The initial light emitted by different light sources in multiple light sources is irradiated onto one side of the object through the display screen, and reflected light is reflected by the object to form reflected light at different positions on one side of the object.
  • the formed outgoing light may be irradiated at the same position on the image sensor. Since different outgoing rays represent different fingerprint information, when different outgoing rays are irradiated to the same position, different fingerprint information is superimposed, thereby causing an image. The imaging of the sensor is blurred.
  • the embodiment of the present application provides a detecting device and a terminal device for improving the accuracy of optical recognition under the display screen.
  • an embodiment of the present application provides a detecting apparatus, including: a light emitting component, configured to emit initial light;
  • control component for controlling a propagation direction of the feedback light emitted from the light-transmitting display screen to form an imaging light, wherein the feedback light is at an initial when an object approaches or contacts the display screen The light reflected by the light of the object approaching or contacting the side of the display screen; the image sensor is configured to receive the image light to form the object to approach or contact the display mode The data of the image of the side of the group.
  • control component is used to control the propagation direction of the feedback light, and the crosstalk generated between the different feedback rays can be eliminated to form the imaging light. Therefore, the image sensor can form data for representing a relatively clear image after receiving the imaging light, thereby achieving more accurate texture detection and improving the accuracy of optical recognition under the display screen.
  • control component includes: a lens array for concentrating the feedback ray to form a transmitted ray incident on the image sensor; a light guiding component disposed on the lens array and the image sensor Between, for eliminating crosstalk occurring between transmitted rays emerging from each lens in the lens array.
  • the light guide component eliminates crosstalk occurring between the transmitted light emitted from each lens in the lens array to form imaging light. Therefore, the image sensor can form data for representing a relatively clear image after receiving the imaging light, thereby achieving more accurate texture detection and improving the accuracy of optical recognition under the display screen.
  • the light guiding component comprises: an N-layer opaque layer stacked in a vertical direction, and each of the N opaque layers is provided with an array of through holes.
  • the positions of the through-hole arrays in each of the opaque layers are completely coincident, and the through-hole array includes a first through hole and a second through hole extending through the opaque layer of each layer, where N is an integer;
  • a partition is formed between the first through hole and the second through hole to eliminate crosstalk occurring between transmitted light emitted from the first lens and transmitted light emitted from the second lens.
  • each opaque layer may be a silicon substrate, or may be a layer having other structures, for example, each opaque layer includes a first sub-layer and is vapor-deposited on the upper surface of the first sub-layer. a second sub-layer; wherein the material of the first sub-layer is a light transmissive material, such as a translucent plastic or glass, and the material of the second sub-layer is a material that does not have translucency, such as It is not a light transmissive film and may be a metal film, a black polyester film (PET) or a black rubber layer.
  • PET black polyester film
  • an array of through holes is formed on each opaque layer, and then an opaque layer having an array of through holes is bonded to form a light guiding component. Since the thickness of each opaque layer is thin, it is difficult to punch holes by laser, mechanical embossing, or unprocessed, so that mass production can be achieved.
  • the N is obtained by rounding up the value obtained according to the function of the duty cycle; wherein the function of the duty ratio is 1 and the reciprocal of the difference between the duty ratios,
  • the duty cycle is the ratio of the diameter of the lens in the lens array to the period of the lens of the lens array.
  • the number of layers of the desired opaque layer is determined according to the duty ratio, that is, the duty ratio of the lens in the lens array.
  • the light guiding component includes: an opaque layer, the opaque layer is provided with an array of through holes, and the through hole array includes a first through hole penetrating the opaque layer and a second through hole; wherein the first through hole and the second through hole have a partition therebetween to eliminate between the transmitted light emitted from the first lens and the transmitted light emitted from the second lens Crosstalk that has occurred.
  • the through hole array is formed on the opaque layer, and the first through hole and the second through hole in the through hole array are separated by a light blocking function, thereby eliminating the emission from the first lens.
  • the thickness of the opaque layer is less than or equal to a vertical distance from the optical center of the lens in the lens array to the image sensor such that the first from the lens array Transmitted light emitted from the lens exits through the first through hole to a first region where the projection of the first through hole is on the image sensor, and the transmitted light emitted from the second lens of the lens array passes through the first The second through hole exits to a second area where the projection of the second through hole on the image sensor is located.
  • the thickness of the opaque layer is set to be less than or equal to a vertical distance from the optical center of the lens in the lens array to the image sensor to avoid the transmitted light emitted from the first lens.
  • the first through hole exits to the second region and/or the outgoing light transmitted from the second lens exits through the second through hole to the first region, thereby further eliminating crosstalk occurring between the transmitted light transmitted from the lens.
  • the aperture of the first through hole is smaller than or equal to the diameter of the first lens
  • the aperture of the second through hole is smaller than or equal to the diameter of the second lens
  • the aperture of each through hole in the through hole array is smaller than or equal to the diameter of the lens corresponding to each through hole in the lens array, for example, the aperture of the first through hole is smaller than or equal to the first lens.
  • the diameter of the second through hole is smaller than or equal to the diameter of the second lens, so that the transmitted light transmitted from the second lens is directly incident into the first through hole from the top end of the first through hole, and is transmitted in the first through hole.
  • Crosstalk occurs between the transmitted rays, or transmitted rays transmitted from the first lens are directly incident into the second through holes from the top end of the second through holes, and crosstalk occurs between the transmitted light transmitted in the second through holes.
  • the light guiding component is a fiber optic panel
  • the numerical aperture of the fiber optic panel is less than a preset value, so that the fiber optic panel receives the transmitted light from the lens array at a preset angle range.
  • the preset value is in the lens array The ratio of the diameter of the lens to the distance between the lens array and the fiber optic panel.
  • the numerical aperture of the optical fiber panel is smaller than a preset value, thereby ensuring that the optical fiber panel receives the transmitted light within a preset angle range emitted from the lens array, thereby eliminating crosstalk occurring between different transmitted light.
  • the light emitting component is a light source disposed outside the display screen
  • the detecting device further includes:
  • a collimating component for controlling different light emitted by different light sources included in the light emitting component to illuminate different regions on one side of the object.
  • the illumination range of the initial light emitted by the different light sources included in the light-emitting component can be further controlled by the collimating component, and the control light can be further controlled by the light guiding component to better eliminate the occurrence of light between the light-emitting components.
  • Crosstalk the illumination range of the initial light emitted by the different light sources included in the light-emitting component
  • the collimating assembly includes:
  • a light transmitting portion disposed between the adjacent light blocking portions, the light blocking portion for blocking the initial light from being incident on the pixel electrode of the display screen to control the The initial light is irradiated from the light transmitting portion to a different region on one side of the object from a gap between adjacent pixel electrodes.
  • the light blocking portion blocks the initial light from being irradiated onto the pixel electrode of the display screen, limits the incident angle of the initial light, prevents the initial light from being reflected back to the back surface of the pixel electrode, and is reflected back to the side of the object. Upper, thereby increasing the irradiance of the initial light onto one side of the object.
  • an embodiment of the present application provides a detecting device, where the detecting device includes a control component for controlling a propagation direction of a feedback light emitted from a light-transmitting display screen to form an imaging light, wherein the feedback Light is a light reflected by an image of a side of the display screen that is close to or in contact with an image of the display screen when an object approaches or contacts the display screen; By receiving the imaging ray, data is formed for an image representing the texture of the object approaching or contacting one side of the display module.
  • control component is used to control the propagation direction of the feedback light, and the crosstalk generated between the different feedback rays can be eliminated to form the imaging light. Therefore, the image sensor can form data for representing a relatively clear image after receiving the imaging light, thereby achieving more accurate texture detection and improving the accuracy of optical recognition under the display screen.
  • control component includes: a lens array for concentrating the feedback ray to form a transmitted ray incident on the image sensor; a light guiding component disposed on the lens array and the image sensor Between, for eliminating crosstalk occurring between transmitted rays emerging from each lens in the lens array to form the imaged light.
  • the light guide component eliminates crosstalk occurring between the transmitted light emitted from each lens in the lens array to form imaging light. Therefore, the image sensor can form data for representing a relatively clear image after receiving the imaging light, thereby achieving more accurate texture detection and improving the accuracy of optical recognition under the display screen.
  • the light guiding component comprises: an N-layer opaque layer stacked in a vertical direction, and each of the N opaque layers is provided with an array of through holes.
  • the positions of the through-hole arrays in each of the opaque layers are completely coincident, and the through-hole array includes a first through hole and a second through hole extending through the opaque layer of each layer, where N is an integer;
  • a partition is formed between the first through hole and the second through hole to eliminate crosstalk occurring between transmitted light emitted from the first lens and transmitted light emitted from the second lens.
  • each opaque layer may be a silicon substrate, or may be a layer having other structures, for example, each opaque layer includes a first sub-layer and is disposed on the first sub-layer. a second sub-layer of the surface; wherein the material of the first sub-layer is a light transmissive material, such as a translucent plastic or glass, and the material of the second sub-layer is a material that does not have translucency.
  • the material of the first sub-layer is a light transmissive material, such as a translucent plastic or glass
  • the material of the second sub-layer is a material that does not have translucency.
  • it is not a light transmissive film, and may be a metal film, a black polyester film (PET) or a black rubber layer.
  • the second sub-layer may be vapor-deposited on the upper surface of the first sub-layer by vapor deposition, or may be disposed on the upper surface of the first sub-layer by means of a mask, which is implemented in the present application. There are no restrictions in the examples.
  • an array of through holes is formed on each opaque layer, and then an opaque layer having an array of through holes is bonded to form a light guiding component. Since the thickness of each opaque layer is thin, it is difficult to punch holes by laser, mechanical embossing, or unprocessed, so that mass production can be achieved.
  • the N is obtained by rounding up the value obtained according to the function of the duty cycle; wherein the function of the duty ratio is 1 and the reciprocal of the difference between the duty ratios,
  • the duty cycle is the ratio of the diameter of the lens in the lens array to the period of the lens of the lens array.
  • the number of layers of the desired opaque layer is determined according to the duty ratio, that is, the duty ratio of the lens in the lens array.
  • the light guiding component includes: an opaque layer, the opaque layer is provided with an array of through holes, and the through hole array includes a first through hole penetrating the opaque layer and a second through hole; wherein the first through hole and the second through hole have a partition therebetween to eliminate between the transmitted light emitted from the first lens and the transmitted light emitted from the second lens Crosstalk that has occurred.
  • the through hole array is formed on the opaque layer, and the first through hole and the second through hole in the through hole array are separated by a light blocking function, thereby eliminating the emission from the first lens.
  • the thickness of the opaque layer is less than or equal to a vertical distance from the optical center of the lens in the lens array to the image sensor such that the first from the lens array Transmitted light emitted from the lens exits through the first through hole to a first region where the projection of the first through hole is on the image sensor, and the transmitted light emitted from the second lens of the lens array passes through the first The second through hole exits to a second area where the projection of the second through hole on the image sensor is located.
  • the thickness of the opaque layer is set to be less than or equal to a vertical distance from the optical center of the lens in the lens array to the image sensor to avoid the transmitted light emitted from the first lens.
  • the first through hole exits to the second region and/or the outgoing light transmitted from the second lens exits through the second through hole to the first region, thereby further eliminating crosstalk occurring between the transmitted light transmitted from the lens.
  • the aperture of the first through hole is smaller than or equal to the diameter of the first lens
  • the aperture of the second through hole is smaller than or equal to the diameter of the second lens
  • the aperture of each through hole in the through hole array is smaller than or equal to the diameter of the lens corresponding to each through hole in the lens array, for example, the aperture of the first through hole is smaller than or equal to the first lens.
  • the diameter of the second through hole is smaller than or equal to the diameter of the second lens, so that the transmitted light transmitted from the second lens is directly incident into the first through hole from the top end of the first through hole, and is transmitted in the first through hole.
  • Crosstalk occurs between the transmitted rays, or transmitted rays transmitted from the first lens are directly incident into the second through holes from the top end of the second through holes, and crosstalk occurs between the transmitted light transmitted in the second through holes.
  • the light guiding component is a fiber optic panel
  • the numerical aperture of the fiber optic panel is less than a preset value, so that the fiber optic panel receives the transmitted light from the lens array at a preset angle range.
  • the preset value is in the lens array The ratio of the diameter of the lens to the distance between the lens array and the fiber optic panel.
  • the numerical aperture of the optical fiber panel is smaller than a preset value, thereby ensuring that the optical fiber panel receives the transmitted light within a preset angle range emitted from the lens array, thereby eliminating crosstalk occurring between different transmitted light.
  • the embodiment of the present application provides a terminal device, where the terminal device includes a display having a light transmissive property; and the detecting device of the first aspect is configured to: when an object approaches or contacts the detecting device, Obtaining data for an image representing a texture of a side of the object in proximity or contact with the detecting device; and a processor coupled to the detecting device for converting data of the image into the image, and It is recognized whether the image is a set image.
  • the embodiment of the present application provides a terminal device, where the terminal device includes a display having a light transmissive property; and the detecting device according to the second aspect, when the object is close to or in contact with the display screen Obtaining data for an image of a texture representing a side of the object in proximity or contact with the display screen; and a processor coupled to the detecting means for converting data of the image into the image, And identifying whether the image is a set image.
  • the embodiment of the present application provides a detecting device and a terminal device for improving the accuracy of optical recognition under the display screen.
  • an embodiment of the present application provides a detecting apparatus, comprising: a light emitting component for emitting initial light; and a collimating component for contacting an object on a surface of the object or a light transmissive display screen Controlling, by the display screen, the initial light emitted by the different light-emitting sources in the light-emitting component to be irradiated onto different areas of the surface of the object, and the reflected light formed by the reflection of the initial light through the object passes through
  • the display screen forms a feedback ray; an image sensor for forming data for representing an image of the texture of the surface of the object contacting or near the upper surface by receiving the feedback ray.
  • the direction of propagation of the initial light is controlled by the collimating component, so that the initial light emitted by different light sources in the light-emitting component is irradiated on different areas of the surface of the object, and the regions in different regions do not overlap.
  • Crosstalk is not generated between the reflected rays formed by the initial rays irradiated in different regions after being reflected by the object, and then the reflected light formed by the reflected light passing through the display screen does not crosstalk, so that the image sensor receives the feedback light. It can form data for representing images with clear lines, thereby achieving more accurate texture detection and improving the accuracy of optical recognition under the display.
  • the collimating assembly includes: a light transmitting portion disposed between adjacent light blocking portions, and a light blocking portion for blocking the initial light Irradiation is applied to the pixel electrode of the display screen to control the initial light to be irradiated from the light transmitting portion to a different region of the surface of the object from a gap between adjacent pixel electrodes.
  • the light blocking portion blocks the initial light from being irradiated onto the pixel electrode of the display screen, limiting the incident angle of the initial light, preventing the initial light from being reflected back to the back surface of the pixel electrode, and being unable to illuminate the surface of the object. Upper, thereby increasing the irradiance of the initial light onto the surface of the object.
  • the ratio of the depth to the width of the light transmissive portion is greater than a first predetermined threshold.
  • control of the angle at which the initial light is emitted by different light sources in the light-emitting component can be realized by the setting of the depth and the width of the light-transmitting portion.
  • the light blocking portion is a light blocking block, and a gap between the adjacent light blocking blocks constitutes the light transmitting portion.
  • the light blocking blocks are disposed on the lower surface of the display screen at a certain interval to form a collimating assembly that matches the spacing between adjacent pixel electrodes of the display screen.
  • a light-transmitting block may be filled between the light blocking blocks, which is not limited herein.
  • the collimating assembly includes: an opaque layer, an array of through holes is formed on the opaque layer, the through hole array constitutes the transparent portion, and the opaque portion Other regions on the layer other than the array of vias constitute the light blocking portion.
  • the opaque layer may be disposed on the lower surface of the display screen, and the through hole array is formed on the opaque layer to form the light blocking portion and the light transmitting portion.
  • the collimating assembly includes: an N-layer opaque layer stacked in a vertical direction, and each of the N opaque layers is provided with an array of through holes.
  • the positions of the through-hole arrays in each of the opaque layers are completely coincident, and the array of through holes in the N-layer opaque layer constitutes the transparent portion, and the N-layer opaque layer is Other regions than the via array constitute the light blocking portion, and N is an integer greater than 2.
  • the N-layer opaque layer of the through-hole array may be stacked in a vertical direction of the lower surface of the display screen to form a light-blocking portion and a light-transmitting portion.
  • each opaque layer may be a silicon substrate, or may be a layer having other structures, for example, each opaque layer includes a first sub-layer and is vapor-deposited on the lower surface of the first sub-layer. a second sub-layer; wherein the material of the first sub-layer is a light transmissive material, such as a translucent plastic or glass, and the material of the second sub-layer is a material that does not have translucency, such as It is not a light transmissive film and may be a metal film, a black polyester film (PET) or a black rubber layer.
  • PET black polyester film
  • the image sensor is uniformly disposed in each of the spaced regions between adjacent light sources in the light emitting component; or the image sensor is disposed directly under the light emitting component .
  • the above is to give the setting positions of several image sensors, for example, each of the spaced regions uniformly disposed between adjacent light sources, or disposed directly under the light-emitting component, which is not limited herein.
  • an embodiment of the present application provides a detecting apparatus, including: a light emitting component, configured to emit initial light;
  • a transmissive display screen comprising a cover glass and a substrate glass disposed in parallel; for controlling the emission of different illumination sources in the illumination assembly when the surface of the object contacts or is adjacent to the upper surface of the display screen
  • the initial light is transmitted through the cover glass to different regions of the surface of the object, and the reflected light formed by the reflection of the initial light through the object passes through the substrate glass to form feedback light; the image sensor is used for By receiving the feedback ray, data for representing an image of the texture of the surface of the object contacting or near the upper surface is formed.
  • the direction of propagation of the initial light is controlled by the display screen, so that the initial light emitted by different light sources in the light-emitting component is irradiated on different regions on the surface of the object, and the regions in different regions do not overlap each other.
  • Crosstalk is not generated between the reflected light rays reflected by the objects in different areas, and then the reflected light formed by the reflected light does not crosstalk between the reflected light, so that the image sensor can form after receiving the feedback light. It is used to represent the data of the image with clearer texture, thus achieving more accurate texture detection and improving the accuracy of optical recognition under the display.
  • the substrate glass comprises:
  • a light transmitting portion disposed between the adjacent light blocking portions, the light blocking portion for blocking the initial light from being incident on the pixel electrode of the display screen to control the The initial light is irradiated from the light transmitting portion from a gap between adjacent pixel electrodes to different regions of the surface of the object.
  • the light blocking portion blocks the initial light from being irradiated onto the pixel electrode of the display screen, limiting the incident angle of the initial light, preventing the initial light from being reflected back to the back surface of the pixel electrode, and being unable to illuminate the surface of the object. Upper, thereby increasing the irradiance of the initial light onto the surface of the object.
  • the embodiment of the present application provides a terminal device, including: a display having a light transmissive property; and the detecting device according to the first aspect, configured to obtain an object when approaching or contacting the display screen Data for an image representing a texture of a surface of the object in proximity or contact with the display screen; a processor coupled to the detecting means for converting data of the image into the image and identifying Whether the image is a set image.
  • the terminal device further includes: a sensor coupled to the processor for detecting a touch operation, the touch operation for activating a detection function of the detecting device; After the detecting function of the device is activated, the processor is further configured to: determine a touch position of the touch operation; and control a light source at a position corresponding to the touch position included in the light emitting component of the detecting device In the illuminated state, the other light sources in the lighting assembly are in a closed state.
  • the processor is further configured to control, according to the touch position of the touch operation, a lighting state of the light source in the light emitting component, that is, the light source at the position corresponding to the touch position is in a lighting state, and the light emitting component is in the light emitting component.
  • the other light sources are off to reduce the power consumption of the terminal device.
  • the embodiment of the present application provides a terminal, comprising: the detecting device according to the second aspect, configured to: when an object is in proximity or contact with the detecting device, obtain the object and the Data for detecting an image of the texture of the surface of the device in proximity or contact; a processor coupled to the detection device for converting data of the image into the image and identifying whether the image is a set image.
  • the direction of propagation of the initial light is controlled by the collimating component, so that the initial light emitted by different light sources in the light-emitting component is irradiated on different areas of the surface of the object, and the regions in different regions do not overlap.
  • Crosstalk is not generated between the reflected rays formed by the initial rays irradiated in different regions after being reflected by the object, and then the reflected light formed by the reflected light passing through the display screen does not crosstalk, so that the image sensor receives the feedback light. It can form data for representing images with clear lines, thereby achieving more accurate texture detection and improving the accuracy of optical recognition under the display.
  • 1 is a schematic view showing blurring of optical grain imaging in the prior art
  • FIG. 2 is a schematic structural diagram of a detecting apparatus according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a light emitting component in a detecting device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a collimating component in a detecting device according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a light guiding component in a detecting device according to an embodiment of the present disclosure
  • FIG. 7 is another schematic structural diagram of a light guiding component in a detecting device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a light transmission path when a light guiding component is a fiber optic panel in a detecting device according to an embodiment of the present disclosure
  • FIG. 9 is another schematic structural diagram of a light guiding component in a detecting device according to an embodiment of the present disclosure.
  • FIG. 10 is another schematic structural diagram of a light guiding component in a detecting device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another detecting apparatus according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of another terminal device according to an embodiment of the present application.
  • FIG. 14 is a schematic structural view of a display module in the prior art
  • FIG. 15 is a schematic structural diagram of a detecting apparatus according to an embodiment of the present application.
  • 16 is a schematic diagram of an optical path of a feedback light emitted from a display screen according to an embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a collimating component according to an embodiment of the present application.
  • FIG. 18 is a schematic structural diagram of a collimating component according to an embodiment of the present application.
  • FIG. 19 is a schematic structural diagram of another collimating component according to an embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of another collimating component according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic diagram of a manner of setting an image sensor in a detecting device according to an embodiment of the present disclosure
  • FIG. 22 is a schematic diagram of a manner of setting an image sensor in a detecting device according to an embodiment of the present disclosure
  • FIG. 23 is a schematic structural diagram of another terminal device according to an embodiment of the present application.
  • FIG. 24 is a schematic structural diagram of a substrate glass of a display screen according to an embodiment of the present application.
  • FIG. 25 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 26 is a schematic structural diagram of another terminal device according to an embodiment of the present application.
  • an embodiment of the present application provides a detecting apparatus for achieving more accurate identification.
  • the detection device comprises:
  • the control component 201 is configured to control a propagation direction of the feedback light emitted from the light-transmitting display screen to form an imaging light, wherein the feedback light is an illumination of the initial light when an object approaches or contacts the display screen Light that is reflected by an object that is near or in contact with the grain of one side of the display screen;
  • the image sensor 202 is configured to form data for indicating an image of the texture of the object approaching or contacting one side of the display module by receiving the imaging light.
  • control component 201 controls the propagation direction of the feedback light, and the crosstalk generated between the different feedback rays can be eliminated, so that the image sensor 202 can form an image for indicating a clear texture after receiving the imaging light.
  • the data in turn, achieves more precise texture detection and improves the accuracy of optical recognition under the display.
  • the light emitting component 200 is a light source disposed outside the display screen.
  • the light-emitting assembly 200 may be an array light source disposed directly under the lower surface of the display screen.
  • the array light source may be composed of an LED light source, or may be composed of a laser light source, or may be composed of an infrared light source.
  • the area where the array light source is disposed is the area for detecting the texture on the detecting device, in which the light sources are arranged at equal intervals to form an array, for example, a 5 ⁇ 4 array, please refer to FIG. 3.
  • the display screen has light transmissivity.
  • OLED Organic Light-Emitted Diode
  • LED Light-Emitted Diode
  • FOLED Flexible OLED
  • the display screen adopts an OLED as an example.
  • the entire structural layer includes: a cover glass 400; a polarizer 401 is disposed on the cover glass 400 through an optical adhesive; and the package glass 402 is disposed on the polarizer 401.
  • a cathode 403 disposed on a lower surface of the package glass 400; a light-emitting layer 404 disposed on a lower surface of the cathode 403; an anode 405 disposed on a lower surface of the light-emitting layer 404, and a base glass 406, wherein the cathode 403 and the anode
  • the intersection of 405 forms a pixel, and the electrode pair composed of the cathode 403 and the anode 405 at the corresponding position of each pixel is a pixel electrode, and a gap is formed between adjacent pixel electrodes in the pixel electrode.
  • the detecting device further includes a collimating component 500 for controlling the initial light. Irradiation range.
  • an initial ray incident on the display screen from a predetermined range of angles can be obtained, that is, the area where the predetermined angle range covered by the initial light illuminating on one side of the object is controlled.
  • the initial light emitted by the first light source is processed by the collimating component 500 and then incident on the display screen from a predetermined angle range to illuminate the first area on one side of the object.
  • the initial light emitted by the second light source is processed by the collimating assembly 500 to enter the display screen from a predetermined range of angles, illuminating a second region on one side of the object, the first region and the second region not overlapping.
  • the collimating assembly 500 includes a light transmitting portion and a light blocking portion.
  • the implementation of the light transmitting portion and the light blocking portion includes, but is not limited to, the following two, which are separately described below.
  • a light blocking layer is disposed on the lower surface of the display screen, and a through hole array is formed on the light blocking layer, wherein the through hole is a light transmitting portion, and the other portion of the light blocking layer except the through hole is a light blocking portion
  • the collimating assembly 500 includes a light blocking layer and an array of through holes formed in the light blocking layer. The initial light passes through the through holes in the through hole array, and the gap between the adjacent pixel electrodes corresponding to the through holes is transmitted through the display screen to different areas on one side of the object.
  • the material of the light blocking layer may be an opaque material, such as a black plastic film, a silicon wafer or a metal foil.
  • a light blocking block is disposed on the lower surface of the display screen, wherein the light blocking block is the light blocking portion, and the gap between the adjacent light blocking blocks is the light transmitting portion, that is, in the mode B, the collimation Assembly 500 includes a gap between the light blocking block and the adjacent light blocking block.
  • the initial light passes through the gap between the adjacent light blocking blocks in the light blocking block, and the gap between the adjacent pixel electrodes corresponding to the gap between the adjacent light blocking blocks is transmitted to one side of the object through the display screen. different regions.
  • the pixel electrode of the display screen since the pixel electrode of the display screen has strong opacity, and the back surface of the pixel electrode, that is, the side of the pixel electrode facing the lower surface of the display screen, is highly reflective, that is, irradiated to the back surface of the pixel electrode.
  • the initial light will be strongly reflected. Therefore, a light blocking portion is formed at the pixel electrode, so that the initial light is incident from the light transmitting portion between the adjacent light blocking portions, which limits the incident angle of the incident light and avoids the initial light irradiation. After being reflected to the back side of the pixel electrode, it is reflected back and cannot enter the display screen, thereby increasing the irradiation rate of the initial light to the side of the object.
  • the initial light is irradiated to one side of the object, and the reflected light formed by the object is reflected by the display screen to form a feedback light. Since crosstalk may occur between the feedback light, in order to avoid crosstalk between the feedback light, The direction of propagation of the feedback ray is controlled by control component 201 to form imaging ray.
  • control component 201 includes:
  • a lens array for collecting feedback light to form a transmitted light of the incident image sensor 202;
  • a light directing assembly is disposed between the lens array and image sensor 202 for eliminating crosstalk occurring between transmitted light emerging from each lens in the array of lenses to form imaged light.
  • a lens array is used to focus the received feedback light.
  • the volume of the detecting device is limited. If the thickness of the detecting device is to be within a certain range, the thickness of the lens is also within a certain range.
  • the thickness of the lens is constant, the shorter the focal length of the lens and the smaller the diameter of the lens, the smaller the angle of the lens, the smaller the angle of the lens to receive the emitted light, so that the lens can be received from the display.
  • a beam array is required to emit light at any angle and to converge the outgoing light.
  • the gap between adjacent lenses in the lens array is the same, and the diameter of each lens in the lens array is the same, and the focal length of each lens is also the same.
  • the diameter of each lens included in the lens array is within a preset diameter range, for example, the preset diameter ranges from [5 micrometers (um), 600 um], wherein the processing precision and image of the lens are taken into consideration. Resolution, the diameter of the lens can be specifically 50um.
  • the focal length of each lens included in the lens array is within a preset focal length range, for example, the preset focal length range is [20 um, 800 um], wherein the focal length of the lens may be specifically considered in consideration of the processing precision of the lens and the resolution of the image. It is 50um.
  • the material of the lens included in the lens array may be resin, plastic, or glass.
  • the transmitted light transmitted from the lens array is transmitted to the image sensor 202 through the light guiding component.
  • the implementation manner of the light guiding component includes, but is not limited to, the following three types, which are respectively introduced below.
  • the array of via holes opened on the light blocking layer is hereinafter referred to as a first via array.
  • the light guiding component comprises: an opaque layer, and the opaque layer is provided with an array of through holes.
  • the array of through holes formed in the opaque layer is referred to as a second through hole array, and the second through hole array includes through holes.
  • a first through hole and a second through hole of the optical layer wherein the first through hole and the second through hole have a partition to eliminate transmitted light emitted from the first lens and emitted from the second lens Crosstalk that occurs between transmitted rays.
  • the light guiding component is an opaque layer having an array of second via holes.
  • the material of the opaque layer may be a black plastic film, a silicon wafer, a metal foil, or the like.
  • the second via array may be opened on the opaque layer by laser, mechanical embossing, or micro-nano processing.
  • the second through-hole array includes a first through-hole and a second through-hole, and of course, a third through-hole and a fourth through-hole, which are not limited in the embodiment of the present application.
  • the arrangement positions of the through holes in the second through hole array are in one-to-one correspondence with the arrangement positions of the lenses in the lens array.
  • "corresponding" means that transmitted light transmitted from a certain lens is emitted from a through hole corresponding to the lens.
  • the first through hole corresponds to the first lens, that is, the control is from the first lens.
  • the transmitted transmitted light is emitted from the first through hole
  • the second through hole corresponds to the second lens, that is, the transmitted light transmitted from the second lens is controlled to exit from the second through hole.
  • the first through hole and the second through hole included in the through hole array are separated, and the first through hole and the second through hole are separated. Since the opaque layer can block light, the partition can also block light. Thereby, crosstalk between the transmitted light transmitted from the first lens and the transmitted light transmitted through the lens is avoided.
  • the thickness of the opaque layer is less than or equal to the vertical distance from the optical center of the lens to the image sensor 202.
  • the aspect ratio of the via hole in the second via array is greater than a preset value, for example, 3:1, 5:1, or 10:1, wherein the aspect ratio of the via is the depth of the via and the aperture
  • the ratio that is, the ratio of the thickness of the opaque layer to the aperture.
  • the transmitted light transmitted from the first lens is emitted through the first through hole to the first region where the projection of the first through hole on the image sensor 202 is located.
  • the transmitted light transmitted by the second lens is emitted through the second through hole to the second region where the projection of the second through hole on the image sensor 202 is located, so that the transmitted light transmitted from the first lens is prevented from exiting through the first through hole to the second region and / or transmitted light transmitted from the second lens is emitted to the first region through the second through hole, so that crosstalk between the transmitted light transmitted from the lens can be further eliminated.
  • the aperture of each of the through holes in the second through hole array is smaller than or equal to the diameter of the lens corresponding to each of the through holes in the lens array, for example, the first pass
  • the aperture of the hole is smaller than or equal to the diameter of the first lens
  • the aperture of the second through hole is smaller than or equal to the diameter of the second lens, so as to prevent the transmitted light transmitted from the second lens from directly entering the first pass from the top end of the first through hole.
  • Crosstalk occurs between the holes and the transmitted light transmitted in the first through holes.
  • each through hole in the second through hole array is required to correspond to one pixel, so that the aperture of each through hole in the second through hole array is smaller, and
  • the depth of each of the through holes included in the second via array will be deeper, that is, the aspect ratio of the through holes will be larger.
  • the second via array is fabricated by laser, mechanical imprinting, or micromachining.
  • the difficulty of these processing methods tends to increase as the aspect ratio of the via increases. It is not conducive to mass production.
  • the embodiment of the present application proposes the implementation of the light guiding component. Referring to FIG. 7, the optical fiber panel is used to eliminate the crosstalk between the transmitted rays of different lenses.
  • the light guiding component is a fiber optic panel, and the numerical aperture of the fiber optic panel is less than a preset value, so that the fiber optic panel receives the transmitted light from the lens array at a preset angle range to eliminate the transmitted light emitted from the first lens of the lens array and Crosstalk occurring between transmitted rays emerging from the second lens of the lens array.
  • the preset value is obtained according to the diameter of any one of the lenses included in the lens array and the distance between any one of the lens arrays and the fiber optic panel.
  • the fiber optic panel includes a core and a cladding.
  • the wire diameter of the core is obtained by the magnification required for the lens in the lens array and the resolution required for the texture recognition. For example, when the resolution is 500 pixels and the magnification of the lens array is 2:1, the single pixel of the image sensor 202 cannot exceed 25 um at the maximum, and the single pixel of the image sensor 202 needs at least 4-6 cores. For example, if four are used, the core diameter of the core is about 6um.
  • the numerical aperture of the optical fiber panel is smaller than a preset value, so that the optical fiber panel receives the transmitted light transmitted from the lens array within a preset angle range.
  • NA the numerical aperture of the fiber optic panel
  • L the distance between the lens array and the fiber optic panel.
  • the numerical aperture of the fiber optic panel is related to the refractive index of the core and the refractive index of the cladding.
  • the difference between the refractive index of the core and the refractive index of the cladding is also small.
  • the numerical aperture of the fiber optic panel is 0.14, the difference between the refractive index of the core and the refractive index of the cladding is 0.01; when the numerical aperture of the optical fiber panel is 0.15, the refractive index and cladding of the core The difference between the refractive indices is 0.02 or the like.
  • the transmitted light of the lens is incident from the first end surface of the optical fiber panel at an incident angle ⁇ 0
  • the refracted light is refracted to be incident on the first interface of the core. If the incident angle ⁇ 0 of the refracted ray at the first interface is greater than the critical angle ⁇ c , the refracted ray will be totally reflected at the first interface, and the totally reflected ray is incident on the second interface of the core opposite the first interface And total reflection occurs on the second interface.
  • the condition that the transmitted light is totally reflected in the optical fiber panel is:
  • n 0 is an absolute refractive index of air
  • n 1 is a refractive index of the core
  • n 2 is a refractive index of the cladding
  • the incident angle ⁇ 0 of the transmitted light can be calculated to be 9.9°. That is, the refracted ray formed by the incident light having an incident angle smaller than ⁇ 0 after being incident from the first end surface of the optical fiber panel will be totally reflected at the first interface, and the refracted light is transmitted without loss, and exits from the second end surface of the optical fiber panel; When the incident angle is larger than ⁇ 0 , the refracted light formed by the transmitted light from the first end face of the optical fiber panel is refracted again at the first interface, and the refracted refracted ray is incident on the cladding.
  • the refraction refracted light may be eliminated by adding an absorption wire to the cladding layer, or a light blocking layer may be added on the outer side of the cladding layer, for example, a light blocking layer made of polyacrylate. Used to eliminate light from the cladding.
  • a light blocking layer made of polyacrylate.
  • each through hole in the second through hole array is required to correspond to one pixel, so that the aperture of each through hole in the second through hole array is smaller, and
  • the depth of each of the through holes included in the second via array will be deeper, that is, the aspect ratio of the through holes will be larger.
  • the second via array is fabricated by laser, mechanical imprinting, or micromachining.
  • the difficulty of these processing methods is often the same as the aspect ratio of the via. The increase is increasing, which is not conducive to mass production.
  • the embodiment of the present application proposes the third implementation of the light guiding component, that is, the N-layer opaque layer stacked in the vertical direction is used to eliminate the crosstalk between the transmitted rays of different lenses.
  • the light guiding component comprises: an N-layer opaque layer stacked in a vertical direction, and each of the opaque layers of the N-layer opaque layer is provided with a through-hole array, and the through-hole array formed by each opaque layer The positions of the holes are completely coincident.
  • the array of through holes each of the opaque layers is referred to as a third via array, and the third via array includes third through holes and fourth through holes penetrating each opaque layer.
  • N is an integer;
  • the third through hole and the fourth through hole have a partition to eliminate crosstalk occurring between the transmitted light emitted from the first lens and the transmitted light emitted from the second lens.
  • each of the opaque layers of the N-layer opaque layer is provided with a third via array, the arrangement positions of the through holes in the third via array and the arrangement positions of the lenses in the lens array.
  • corresponding means that transmitted light transmitted from a certain lens is emitted from a through hole corresponding to the lens.
  • the third through hole and the fourth through hole in the third through hole array, the first lens and the second lens in the lens array are exemplified, and the third through hole corresponds to the first lens, that is, the control is from the first lens
  • the transmitted transmitted light is emitted from the third through hole
  • the fourth through hole corresponds to the second lens, that is, the transmitted light projected from the second lens is controlled to exit from the fourth through hole.
  • N is obtained by the diameter of the lens in the lens array and the period of the lens array, for example, among them.
  • p is the period of the lens array.
  • the total thickness of the light control layer disposed in the N layer stack is less than or equal to the optical center of the lens to the image sensor 202. The vertical distance between them.
  • the aperture of each of the through holes in the third through hole array is smaller than or equal to the diameter of the lens corresponding to each of the through holes in the lens array, for example, the third pass
  • the aperture of the hole is smaller than or equal to the diameter of the first lens
  • the aperture of the fourth through hole is smaller than or equal to the diameter of the second lens, so as to prevent the transmitted light transmitted from the second lens from directly entering the third pass from the top end of the third through hole.
  • Crosstalk occurs between the holes and the transmitted light transmitted in the third through holes.
  • the implementation manner of the N-layer opaque layer includes, but is not limited to, the following two types. The two implementation manners are respectively introduced below.
  • each of the opaque layers of the N-layer opaque layer includes a first sub-layer and a second sub-layer evaporated on the upper surface of the first sub-layer, wherein the material of the first sub-layer is a light transmissive material, such as a light transmissive glass or plastic, etc.
  • the second sublayer material is an opaque material, such as an opaque film, which may be a metal film, a black polyester film (Polyseter Film, PET) or Black rubber layer.
  • the formation of the via array on each opaque layer includes, but is not limited to, the following two modes:
  • a second sub-layer is evaporated on the first sub-layer of each layer by an evaporation process, and a third via array is formed on the second sub-layer.
  • a mask may be first disposed on each of the first sub-layers, wherein the mask is provided with at least two sub-regions, and at least two sub-regions have gaps between adjacent sub-regions, at least The second sub-layer is evaporated on the two sub-areas. Then, the mask is removed to obtain an opaque layer in which the third via array is disposed, and then the opaque layers provided with the third via array are stacked and stacked in the vertical direction.
  • the third via layer array is formed by laser, mechanical embossing, or micromachining on a thin second sub-layer, or a third via array is formed through a mask, as compared with The thicker opaque layer is perforated, and the processing difficulty is much lower, which is more suitable for mass production.
  • an N-layer opaque layer such as a silicon substrate.
  • a third via array is formed on each of the opaque layers, and the third via array can be formed by laser, mechanical imprinting, or micromachining.
  • the light control layers on which the third through hole array is opened are stacked in the vertical direction by bonding. Since the light guiding component comprises an N-layer opaque layer, the thickness of each opaque layer is thinner than the thickness of the opaque layer in the implementation mode 1 of the light guiding component, and then laser, mechanically embossed, or The difficulty of punching when punching is reduced by micromachining and the like.
  • the imaging light formed by the transmitted light transmitted through the light guiding component will be incident on the image sensor 202 to form data for representing the image of the texture.
  • the operation mode of the image sensor 202 will be described by taking a fingerprint as a fingerprint and forming a texture image as a fingerprint image.
  • the image sensor 202 includes an image sensing layer and an image chip, and the image sensing layer and the image chip can be connected by a flexible circuit board.
  • the image sensing layer converts the formed fingerprint image into an electrical signal, and sends the electrical signal to the image chip through the flexible circuit board, and the image chip amplifies and converts the received electrical signal, and outputs the digital fingerprint image.
  • the image chip and the processor end communicate using a Serial Peripheral Interface (SPI) or an Inter-Integrated Circuit (I2C) interface.
  • SPI Serial Peripheral Interface
  • I2C Inter-Integrated Circuit
  • the image sensing layer may be a Charge-coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) image sensor 202.
  • CCD Charge-coupled Device
  • CMOS Complementary Metal Oxide Semiconductor
  • the fingerprint image sensing layer may adopt a large-area image sensor 202, for example, a large-area image sensor 202 using an organic material as a photosensitive medium, and specifically, organic printing photoelectric A detector (Organic Printed Photodetecor, OPD) is deposited on a back sheet of a plastic thin film transistor (TFT) to realize large-area image sensing; or a large-area image sensor 202 using an amorphous silicon glass substrate.
  • OPD Organic Printed Photodetecor
  • TFT plastic thin film transistor
  • photodiodes and thin film transistors are used as optical sensing units, and glass or plastic is used as a substrate.
  • the propagation direction of different feedback rays is controlled by the control component 201, that is, for eliminating crosstalk generated between the feedback rays, it can be ensured that after the image sensor 202 receives the imaging light, it is formed for The data representing the image of the clear lines, in order to achieve more accurate texture detection, improve the accuracy of optical recognition under the display.
  • an embodiment of the present application provides a detecting apparatus, including:
  • control component 1100 configured to control a propagation direction of the feedback light emitted from the light-transmitting display screen to form an imaging light, wherein the feedback light is when the object approaches or contacts the display screen, The light reflected by the grain of the side of the display screen when the object approaches or contacts the illumination of the initial light emitted by the display screen;
  • the image sensor 1101 is configured to form data for indicating an image of a texture of the object approaching or contacting one side of the display module by receiving the imaging light.
  • control component 1100 controls the propagation direction of the feedback light, and the crosstalk generated between the different feedback rays can be eliminated, so that the image sensor 1101 can form an image for indicating a clear texture after receiving the imaging light.
  • the data in turn, achieves more precise texture detection and improves the accuracy of optical recognition under the display.
  • the initial light of the detecting device is emitted by the light emitting layer of the light-transmitting display screen.
  • the display screen may be an Organic Light-Emitted Diode (OLED), a Light-Emitted Diode (LED), or a Flexible Organic Light Emitting Diode (Flexible). OLED, FOLED), etc.
  • OLED Organic Light-Emitted Diode
  • FOLED Flexible Organic Light Emitting Diode
  • the display screen is introduced by taking OLED as an example.
  • the material of the light-emitting layer comprises at least one host material and at least one guest doping material
  • the host material may be a P-type material, that is, a hole-type material, or an N-type material, that is, an electronic type material.
  • the guest doping material may be a phosphorescent material or a fluorescent material.
  • control component 1100 and the image sensor 1101 is the same as that of the control component 201 and the image sensor 202 in the first aspect, and details are not described herein again.
  • the embodiment of the present application provides a terminal device, including:
  • the detecting device 1201 for obtaining data of an image indicating a texture of a side of the object close to or in contact with the display screen 1200 when an object approaches or contacts the display screen 1200;
  • the processor 1202 is coupled to the detecting device 1201 for converting data of the image into an image and identifying whether the image is a set image.
  • the terminal device may be a mobile terminal device, including a mobile terminal device, a mobile terminal device computer, a portable, handheld, computer built-in or vehicle-mounted mobile device, smart wearable Equipment, etc.
  • a mobile terminal device including a mobile terminal device, a mobile terminal device computer, a portable, handheld, computer built-in or vehicle-mounted mobile device, smart wearable Equipment, etc.
  • mobile phones tablet computers (PADs), personal digital assistants (PDAs), point of sales (POS), in-vehicle computers, smart watches, smart helmets, smart glasses, or smart bracelets, etc.
  • PDAs personal digital assistants
  • POS point of sales
  • in-vehicle computers smart watches, smart helmets, smart glasses, or smart bracelets, etc.
  • the processor 1202 receives the data for representing the fingerprint image
  • the data of the fingerprint image is converted into a fingerprint image
  • the feature points of the fingerprint image are extracted
  • the extracted feature points and the pre-saved feature points are extracted.
  • Perform matching to obtain the matching degree between the extracted feature points and the pre-saved feature points.
  • the matching degree is greater than the preset value, for example, 90%
  • the matching is successful
  • the matching degree is less than the preset value
  • the matching fails.
  • the processor 1202 outputs a prompt message, for example, outputting a voice prompt “Please re-enter the fingerprint”, or prompting the fingerprint matching failure by flashing the light.
  • the processor 1202 may be a general-purpose central processing unit or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be field-programmable.
  • ASIC application specific integrated circuit
  • the hardware circuit developed by the Field Programmable Gate Array (FPGA) can be a baseband processor.
  • the terminal device further includes:
  • the sensor 1203 is configured to detect a touch operation for activating the detecting function of the detecting device 1201.
  • the touch operation may be a pressing operation or a sliding operation.
  • the detection function of the detecting device 1201 is activated.
  • the processor 1202 is further configured to:
  • the light source at the position corresponding to the touch position included in the light-emitting component of the detecting device 1201 is controlled to be in a lighting state, and the other light sources in the light-emitting component are in a closed state.
  • the senor 1203 may be a pressure sensor or a gravity sensor.
  • the light emitting component includes a first light source, a second light source, a third light source, and a fourth light source.
  • the touch position is the first in the fingerprint identification area on the display screen 1200 In a region, the first light source and the second light source in the control light-emitting component are turned on, and the third light source and the fourth light source are turned off; when the touch position is the second region in the fingerprint recognition area on the display screen 1200, the light-emitting component is controlled
  • the third light source and the fourth light source are turned on, and the first light source and the second light source are turned off.
  • part of the light sources in the control light-emitting component are in an on state for emitting an initial light source, and other parts of the light source in the light-emitting assembly are controlled to be in a closed state to reduce power consumption of the terminal device.
  • the embodiment of the present application provides a terminal device, including:
  • the detecting device 1301 for obtaining an image of a texture indicating a side of the object in proximity or contact with the display screen 1300 when an object approaches or contacts the display screen 1300 data;
  • a processor 1302 is coupled to the detecting means 1301 for converting data of the image into the image and identifying whether the image is a set image.
  • the terminal device may be a mobile terminal device, including a mobile terminal device, a mobile terminal device computer, a portable, handheld, computer built-in or vehicle-mounted mobile device, smart wearable Equipment, etc.
  • a mobile terminal device including a mobile terminal device, a mobile terminal device computer, a portable, handheld, computer built-in or vehicle-mounted mobile device, smart wearable Equipment, etc.
  • mobile phones tablet computers (PADs), personal digital assistants (PDAs), point of sales (POS), in-vehicle computers, smart watches, smart helmets, smart glasses, or smart bracelets, etc.
  • PDAs personal digital assistants
  • POS point of sales
  • in-vehicle computers smart watches, smart helmets, smart glasses, or smart bracelets, etc.
  • the processor 1302 after the processor 1302 receives the data of the fingerprint image, the data of the fingerprint image is converted into a fingerprint image, the feature points of the fingerprint image are extracted, and the extracted feature points are matched with the pre-saved feature points. Obtaining the matching degree between the extracted feature points and the pre-saved feature points.
  • the matching degree is greater than the preset value, for example, 90%, the matching is successful, and when the matching degree is less than the preset value, the matching fails, and the matching is performed.
  • the processor 1302 Upon failure, the processor 1302 will output a prompt message, for example, outputting a voice prompt "Please re-enter the fingerprint", or flashing the light to indicate that the fingerprint matching failed.
  • the processor 1302 may be a general-purpose central processing unit or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be field-programmable.
  • ASIC application specific integrated circuit
  • the hardware circuit developed by the Field Programmable Gate Array (FPGA) can be a baseband processor.
  • the display screen can be an Organic Light-Emitted Diode (OLED), a Light-Emitted Diode (LED), or a Flexible OLED (FOLED).
  • OLED is taken as an example for description.
  • the entire structural layer includes: a cover glass 200; a polarizer 201 is disposed on the cover glass 200 through an optical adhesive; and the package glass 202 is disposed under the polarizer 201.
  • a surface a cathode 203 disposed on a lower surface of the package glass 202; a light emitting layer 204 disposed on a lower surface of the cathode 203; an anode 205 disposed on a lower surface of the light emitting layer 204, and a substrate glass 206, wherein the cathode 203 and the anode 205
  • the intersections form pixels, and the electrode pair composed of the cathode 203 and the anode 205 at the corresponding position of each pixel is a pixel electrode, and a gap is formed between adjacent pixel electrodes in the pixel electrode.
  • a detection device is provided in the embodiment of the present application, including:
  • the collimating component 301 is configured to control the initial light emitted by the different illuminating light sources in the illuminating component 300 to illuminate the object through the display screen when the surface of the object is in contact with or close to the upper surface of the transmissive display screen On different areas of the surface, the reflected light formed by the reflection of the initial light through the object forms a feedback light through the display screen;
  • the image sensor 302 is configured to form data for representing an image of a texture of a surface of an object contacting or approaching the upper surface according to the feedback ray.
  • the direction of propagation of the initial light is controlled by the collimating component 301, so that the initial light emitted by different light sources in the light-emitting component 300 is irradiated on different regions on the surface of the object, and the regions in different regions are not The overlapping, so that the reflected light formed by the light reflected in different regions is not crosstalked, and then the reflected light formed through the display screen does not crosstalk, so that the image sensor 302 receives the feedback.
  • data for representing a relatively clear image can be formed, thereby achieving more accurate texture detection and improving the accuracy of optical recognition under the display.
  • the light emitting component 300 is a light source disposed outside the display screen.
  • the light-emitting assembly 300 may be an array light source disposed in a region directly under the display screen.
  • the array light source may be composed of an LED light source, or may be composed of a laser light source, or may be composed of an infrared light source.
  • the area where the array light source is disposed is the area for detecting the texture on the detecting device, in which the light sources are arranged at equal intervals to form an array, for example, a 5 ⁇ 4 array, please refer to FIG. 3.
  • the spacing between adjacent light sources in the array light source is greater than a preset value, such as 4 millimeters (mm), 5 mm, or 6 mm.
  • the initial light emitted by each of the array light sources can cover a predetermined area at a position where the first surface object approaches or contacts, and the predetermined area can be an area of 10 mm x 10 mm or an area of 11 mm x 11 mm.
  • each of the light sources in the array source emits initial light in different directions
  • the pixel electrode in the display panel has strong opacity
  • the back of the pixel electrode is the orientation of the pixel electrode.
  • One side of the lower surface of the screen is highly reflective, that is, the light that is incident on the back surface of the pixel electrode is strongly reflected, resulting in a decrease in the incidence of the initial light incident on the display screen.
  • the embodiment of the present application processes the initial light emitted by different light sources by the collimating component 301, and controls the initial light to be irradiated onto different regions of the surface of the object through the gap between adjacent pixel electrodes in the pixel electrode.
  • the collimating component 301 includes:
  • the light-transmitting portion is disposed between the adjacent light-blocking portions, and the light-blocking portion is configured to block the initial light from being irradiated onto the pixel electrode of the display screen to control the initial light from the light-transmitting portion
  • the gap between adjacent pixel electrodes is irradiated onto different areas of the surface of the object.
  • the material of the light blocking portion may be an opaque material, such as a black plastic film, a silicon wafer or a metal foil, and the light transmitting portion may be a light transmissive glass or a light blocking portion. gap.
  • the light blocking portion is configured to block the initial light from being irradiated onto the back surface of the pixel electrode of the display screen, that is, to control the initial light to be emitted through the light transmitting portion, and then incident on the surface of the object from the gap between the adjacent pixel electrodes, That is, the gap between the light transmitting portion and the adjacent pixel electrodes of the display screen is in one-to-one correspondence.
  • This not only limits the incident angle of the initial light, but also prevents the initial light from being directly reflected on the back surface of the pixel electrode, and is reflected back, unable to enter the display screen, and reduces the incidence of the initial light while reducing the optical scattering.
  • the initial light emitted by the array light source is processed by the collimating component 301, it is incident on different regions on the surface of the object through a gap between adjacent pixel electrodes, and adjacent regions in different regions do not overlap, for example, an array.
  • the initial light emitted by the first light source in the light source is processed by the collimating component 301 and then incident on the first region on the surface of the object through the gap between the adjacent pixel electrodes, and the initial light emitted by the second light source in the array light source,
  • the second region is incident on the surface of the object through the gap between the adjacent pixel electrodes, and the first region and the second region do not overlap, and the incident light in the first region is reflected by the object.
  • the cross-talk between the reflected light formed after the reflected light and the reflected light reflected by the object in the second region does not occur.
  • FIG. 16 For the specific optical path diagram, please refer to FIG. 16.
  • the ratio of the depth and the width of the light transmitting portion is set to be greater than a preset value, and the light transmitting portion is exemplified by the light transmitting glass.
  • the ratio of depth width is greater than 3:1, 5:1, or 10:1.
  • the implementation manner of the light transmitting portion and the light blocking portion included in the collimating assembly 301 includes but is not limited to the following three, which are respectively described below.
  • the mode A and the light blocking portion are light blocking blocks, and the gap between the adjacent light blocking blocks constitutes a light transmitting portion.
  • the initial rays are incident on different regions of the surface of the object through the gap between the adjacent pixel electrodes through the gap between the adjacent light blocking blocks through the gap between the adjacent pixel electrodes corresponding to the gap between the adjacent light blocking blocks.
  • the initial light emitted by the different light sources in the array light source is processed by the collimating component 301, different regions on the surface of the object are irradiated to the first region on the surface of the object and For example, in the second region, the reflected light formed by the incident light of the left region of the first region reflected by the second surface and the reflected light formed by the second surface of the second region may still be reflected. Crosstalk has occurred.
  • the longitudinal section of the control light blocking block and the lower surface of the display screen are at a preset angle.
  • the preset angle may be an acute angle between the longitudinal section and the lower surface of the display screen, or an obtuse angle when the longitudinal section is at an angle to the lower surface of the display screen, see FIGS. 17 and 18.
  • incident light rays having a predetermined angle are formed. Since the angle between the longitudinal section of each light blocking block in the light blocking block and the lower surface of the display screen is a preset angle, the incident light rays emerging from the gap between each adjacent light blocking block have The preset angle, that is, the incident light rays ejected from the adjacent light blocking blocks are oriented in the same direction, so that the reflected rays formed by the different incident regions on the surface of the object are reflected in the same direction, Crosstalk between reflected light is avoided, which further improves the accuracy of optical recognition of the display.
  • the light blocking portion may also be a light blocking sheet, and a gap between adjacent light blocking sheets constitutes a light transmitting portion.
  • an opaque layer is disposed on the lower surface of the display screen, and a through hole array is formed on the opaque layer.
  • the through-hole array constitutes a light-transmitting portion, and the area other than the via-hole array on the opaque layer constitutes a light-blocking portion, that is, in the mode B, the collimating assembly 301 includes the opaque layer and the opaque layer.
  • a through hole array opened on the top. The initial rays pass through the through holes in the via array, and are incident on different regions on the surface of the object through a gap between adjacent pixel electrodes corresponding to the via holes.
  • the opaque layer is a opaque film deposited on the lower surface of the display screen by an evaporation process, for example, a metal film, a black polyester film (Polyseter Film, PET) or black. Adhesive layer.
  • the via array can be formed by laser, mechanical imprinting, or micromachining.
  • the aperture of the through hole is set to be smaller than or equal to the gap width between adjacent pixel electrodes, wherein the through hole array has the first through hole and the second through hole, and the adjacent pixel electrode
  • the gap between the first gap and the second gap is exemplified, that is, the aperture of the first through hole is smaller than or equal to the first gap width, and the aperture of the second through hole is smaller than or equal to the second gap width.
  • a mask may be further disposed on a lower surface of the display screen, wherein the mask plate is provided with at least two sub-regions, and at least two of the at least two sub-regions have a gap between the adjacent sub-regions, at least two The opaque layer is evaporated on the sub-areas.
  • the mask is then removed to obtain a collimating assembly 301 comprising an array of vias and an opaque layer.
  • an N-layer opaque layer is stacked in a vertical direction of the lower surface of the display screen, and each of the opaque layers of the N-layer opaque layer is provided with a through-hole array, and each layer is provided with an opaque layer.
  • the positions of the via arrays are completely coincident, and the via array constitutes a light transmitting portion, and other regions of the N-layer light control layer excluding the via array constitute a light blocking portion.
  • the initial light rays are incident on the different regions on the surface of the object from the gap between the adjacent pixel electrodes corresponding to the through holes through the through holes.
  • the via array formed on the opaque layer is referred to as a first via array
  • the via array opened on the N opaque layer is referred to as a second via array.
  • the implementation manner of each layer of the light control layer includes, but is not limited to, the following two types.
  • the two implementation manners are respectively introduced below.
  • each opaque layer in the N-layer opaque layer includes a first sub-layer and a second sub-layer evaporated on a lower surface of the first sub-layer, wherein the material of the first sub-layer is a light transmissive material, such as a light transmissive glass or plastic, etc., the second sublayer material is an opaque material, such as an opaque film, which may be a metal film, a black polyester film (Polyseter Film, PET) or Black rubber layer.
  • the material of the first sub-layer is a light transmissive material, such as a light transmissive glass or plastic, etc.
  • the second sublayer material is an opaque material, such as an opaque film, which may be a metal film, a black polyester film (Polyseter Film, PET) or Black rubber layer.
  • the formation of the second via array on each of the opaque layers includes, but is not limited to, the following two modes:
  • the second sub-layer is vapor-deposited on the lower surface of the first sub-layer of each layer by an evaporation process, and the second via-hole array is opened on the second sub-layer.
  • a mask may be first disposed on a lower surface of each of the first sub-layers, wherein at least two sub-regions are disposed on the mask, and a gap is formed between adjacent sub-regions of the at least two sub-regions, The second sub-layer is evaporated on at least two sub-regions. Then, the mask is removed to obtain an opaque layer provided with the second via array, and then the opaque layers provided with the second via array are stacked and stacked in the vertical direction.
  • each layer of opaque layer such as a silicon substrate.
  • a second via array is formed on each of the opaque layers, and the second via array can be formed by laser, mechanical embossing, or micromachining.
  • the reflected light formed by the object reflection forms a feedback light through the display screen, and the feedback light is received by the lens array to concentrate the feedback light to form the transmitted light of the incident image sensor 302.
  • the volume of the detecting device is limited. If the thickness of the detecting device is to be within a certain range, the thickness of the lens is also within a certain range.
  • the thickness of the lens is constant, the shorter the focal length of the lens and the smaller the diameter of the lens, the smaller the angle of the lens, the smaller the angle of the lens to receive the emitted light, so that the lens can be received from the display.
  • a beam array is required to emit light at any angle and to converge the outgoing light.
  • the gap between adjacent lenses in the lens array is the same, and the diameter of each lens in the lens array is the same, and the focal length of each lens is also the same.
  • the diameter of each lens included in the lens array is within a preset diameter range, for example, the preset diameter ranges from [5 micrometers (um), 600 um], wherein the processing precision and image of the lens are taken into consideration. Resolution, the diameter of the lens can be specifically 50um.
  • the focal length of each lens included in the lens array is within a preset focal length range, for example, the preset focal length range is [20 um, 800 um], wherein the focal length of the lens is specific in consideration of the processing precision of the lens and the resolution of the image. Can be 50um.
  • the material of the lens included in the lens array may be resin, plastic, or glass.
  • the setting manner of the image sensor 302 includes, but is not limited to, the following two implementation manners, which are respectively introduced below.
  • the image sensor 302 is uniformly disposed in each of the spaced regions between adjacent light sources. For example, in the case where the number of image sensors 302 is 4 and the number of light sources is 5, the image sensor 302 is disposed between the light source and the light source.
  • the duty cycle of image sensor 302 and the light source is greater than a threshold, for example, 10:1 or 11:1.
  • Image sensor 302 is set in two ways
  • the image sensor 302 is disposed in a region directly under the light emitting assembly 300.
  • the glass block may or may not be disposed in the space between the adjacent light sources, which is not limited in the embodiment of the present application.
  • the transmitted light is incident on the image sensor 302 to form data for representing an image of the texture, wherein the texture of the object may be a fingerprint, or a texture of other parts of the object, such as a palm print or the like.
  • the operation mode of the image sensor 302 will be described by taking a fingerprint as a fingerprint and forming a texture image as a fingerprint image.
  • the image sensor 302 includes an image sensing layer and an image chip, and the image sensing layer and the image chip can be connected by a flexible circuit board.
  • the image sensing layer converts the formed fingerprint image into an electrical signal, and sends the electrical signal to the image chip through the flexible circuit board, and the image chip amplifies and converts the received electrical signal, and outputs the digital fingerprint image.
  • the image chip and the processor end communicate using a Serial Peripheral Interface (SPI) or an Inter-Integrated Circuit (I2C) interface.
  • SPI Serial Peripheral Interface
  • I2C Inter-Integrated Circuit
  • the image sensing layer may be a Charge-coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) image sensor 302.
  • CCD Charge-coupled Device
  • CMOS Complementary Metal Oxide Semiconductor
  • the fingerprint image sensing layer may adopt a large-area image sensor 302, for example, a large-area image sensor 302 using an organic material as a photosensitive medium, and specifically, organic printing photoelectric A detector (Organic Printed Photodetecor, OPD) is deposited on the back sheet of a plastic thin film transistor (TFT) to realize large-area image sensing; or a large-area image sensor 302 using an amorphous silicon glass substrate.
  • OPD Organic Printed Photodetecor
  • TFT plastic thin film transistor
  • photodiodes and thin film transistors are used as optical sensing units, and glass or plastic is used as a substrate.
  • the direction of propagation of the initial light is controlled by the collimating component 301, so that the initial light emitted by different light sources in the light-emitting component 300 is irradiated on different regions on the surface of the object, and the regions in different regions do not overlap.
  • the crosstalk of the reflected light formed by the light reflected by the object in different regions does not occur, and then the crosstalk between the feedback rays formed by the reflected light from the display screen does not occur, so that the image sensor 302 can form after receiving the feedback light. It is used to represent the data of the image with clearer texture, thus achieving more accurate texture detection and improving the accuracy of optical recognition under the display.
  • an embodiment of the present application provides a detecting apparatus, including:
  • the light-transmitting display screen 1001 includes a cover glass and a substrate glass disposed in parallel; and is used for controlling the initial emission of different light-emitting sources in the light-emitting assembly 1000 when the surface of the object is in contact with or close to the upper surface of the display screen 1001.
  • the light is irradiated onto different areas of the surface of the object through the cover glass, and the reflected light formed by the reflection of the initial light passing through the object forms a feedback light through the substrate glass;
  • the image sensor 1002 is configured to form data for representing an image of a texture of a surface of an object contacting or approaching the upper surface by receiving the feedback light.
  • the direction of propagation of the initial light is controlled by the display screen 1001, so that the initial light emitted by different light sources in the light-emitting component 1000 is irradiated on different regions on the surface of the object, and the regions in different regions do not overlap.
  • crosstalk is not generated between the reflected rays formed by the light reflected in different regions by the object, and then the reflected light formed by the reflected light passing through the display screen 1001 does not crosstalk, so that the image sensor 1002 receives the feedback.
  • data for representing a relatively clear image can be formed, thereby achieving more accurate texture detection and improving the accuracy of optical recognition under the display 1001.
  • the substrate glass includes:
  • the light-transmitting portion is disposed between the adjacent light-blocking portions, wherein the light-blocking portion is configured to block the initial light from being incident on the pixel electrode of the display screen 1001 to control the initial light
  • the light portion is irradiated from a gap between adjacent pixel electrodes onto different regions of the surface of the object.
  • the material of the light blocking portion may be an opaque material, such as a black plastic film, a silicon wafer or a metal foil, and the light transmitting portion may be a light transmissive glass or a light blocking portion. gap.
  • the light blocking portion is for blocking the initial light from being irradiated onto the back surface of the pixel electrode of the display screen 1001, that is, controlling the initial light to be emitted through the light transmitting portion, and then incident on the surface of the object from the gap between the adjacent pixel electrodes. That is, the light-transmitting portion has a one-to-one correspondence with the gap between the adjacent pixel electrodes of the display screen 1001.
  • This not only limits the incident angle of the initial light, but also prevents the initial light from being directly reflected on the back surface of the pixel electrode and is reflected back, and cannot enter the display screen 1001, thereby reducing the optical scattering and increasing the incident rate of the initial light.
  • the description of the light blocking portion is the same as the light blocking portion in the fifth aspect, and details are not described herein again.
  • a seventh aspect please refer to FIG. 25.
  • the embodiment of the present application provides a terminal device, including:
  • the detecting device 1201 for obtaining data of an image of a texture indicating a surface of the object in proximity or contact with the display screen 1200 when an object approaches or contacts the display screen 1200;
  • the processor 1202 is coupled to the detecting means 1201 for converting data of the image into the image and identifying whether the image is a set image.
  • the terminal device may be a stand-alone device or a module disposed in another device, and the other devices may include, but are not limited to, a mobile phone (or “cellular” phone), and have a mobile terminal device computer.
  • a mobile phone or “cellular” phone
  • mobile phones tablet computers (PADs), personal digital assistants (PDAs), point of sales (POS), in-vehicle computers, smart watches, smart helmets, smart glasses, or smart bracelets, etc.
  • PDAs personal digital assistants
  • POS point of sales
  • the processor 1202 receives the data for representing the fingerprint image
  • the data of the fingerprint image is converted into a fingerprint image
  • the feature points of the fingerprint image are extracted
  • the extracted feature points and the pre-saved feature points are extracted.
  • Perform matching to obtain the matching degree between the extracted feature points and the pre-saved feature points.
  • the matching degree is greater than the preset value, for example, 90%
  • the matching is successful
  • the matching degree is less than the preset value
  • the matching fails.
  • the processor 1202 outputs a prompt message, for example, outputting a voice prompt “Please re-enter the fingerprint”, or prompting the fingerprint matching failure by flashing the light.
  • the processor 1202 may be a general-purpose central processing unit or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be field-programmable.
  • ASIC application specific integrated circuit
  • the hardware circuit developed by the Field Programmable Gate Array (FPGA) can be a baseband processor.
  • the terminal device further includes:
  • the sensor 1203 is configured to detect a touch operation for activating the detecting function of the detecting device 1201.
  • the touch operation may be a pressing operation or a sliding operation.
  • the detection function of the detecting device 1201 is activated.
  • the processor 1202 is further configured to:
  • the light source at the position corresponding to the touch position included in the light-emitting component of the control detecting device 1201 is in a lighting state, and the other light sources in the light-emitting component are in a closed state.
  • the senor 1203 may be a pressure sensor or a gravity sensor.
  • the light emitting component includes a first light source, a second light source, a third light source, and a fourth light source.
  • the touch position is the first in the fingerprint identification area on the display screen 1200 In a region, the first light source and the second light source in the control light-emitting component are turned on, and the third light source and the fourth light source are turned off; when the touch position is the second region in the fingerprint recognition area on the display screen 1200, the light-emitting component is controlled
  • the third light source and the fourth light source are turned on, and the first light source and the second light source are turned off.
  • part of the light sources in the control light-emitting component are in an on state for emitting an initial light source, and other parts of the light source in the light-emitting assembly are controlled to be in a closed state to reduce power consumption of the terminal device.
  • an embodiment of the present application provides a terminal device, including:
  • the detecting device 1300 for obtaining data of an image of a texture indicating a surface of the object in proximity or contact with the detecting device 1300 when an object approaches or contacts the detecting device 1300;
  • the processor 1301 is coupled to the detecting device 1300 for converting data of the image into an image and identifying whether the image is a set image.
  • the terminal device may be a stand-alone device or a module disposed in another device, and the other devices may include, but are not limited to, a mobile phone (or “cellular” phone), and have a mobile terminal device computer.
  • a mobile phone or “cellular” phone
  • mobile phones tablet computers (PADs), personal digital assistants (PDAs), point of sales (POS), in-vehicle computers, smart watches, smart helmets, smart glasses, or smart bracelets, etc.
  • PDAs personal digital assistants
  • POS point of sales
  • the processor 1301 receives the data for representing the fingerprint image
  • the data of the fingerprint image is converted into a fingerprint image
  • the feature points of the fingerprint image are extracted
  • the extracted feature points and the pre-saved feature points are extracted.
  • Perform matching to obtain the matching degree between the extracted feature points and the pre-saved feature points.
  • the matching degree is greater than the preset value, for example, 90%
  • the matching is successful
  • the matching degree is less than the preset value
  • the matching fails.
  • the processor 1301 outputs a prompt message, for example, outputting a voice prompt "Please re-enter the fingerprint", or prompting the fingerprint matching failure by flashing the light.
  • the processor 1301 may be a general-purpose central processing unit or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be field-programmable.
  • ASIC application specific integrated circuit
  • the hardware circuit developed by Field Array (English: Field Programmable Gate Array, referred to as FPGA) can be a baseband processor.
  • the terminal device further includes:
  • the sensor 1302 is configured to detect a touch operation for activating the detecting function of the detecting device 1300.
  • the touch operation may be a pressing operation or a sliding operation.
  • the processor 1301 is further configured to:
  • the light source at the position corresponding to the touch position included in the light-emitting component of the control detecting device 1300 is in a lighting state, and the other light sources in the light-emitting component are in a closed state.
  • the senor 1302 may be a pressure sensor or a gravity sensor.
  • the light emitting component includes a first light source, a second light source, a third light source, and a fourth light source
  • the touch position is the first in the fingerprint identification area on the display screen.
  • the first light source and the second light source in the control light-emitting component are turned on, and the third light source and the fourth light source are turned off; when the touch position is the second area in the fingerprint recognition area on the detecting device 1300, the light-emitting component is controlled
  • the third light source and the fourth light source are turned on, and the first light source and the second light source are turned off.
  • part of the light sources in the control light-emitting component are in an on state for emitting an initial light source, and other parts of the light source in the light-emitting assembly are controlled to be in a closed state to reduce power consumption of the terminal device.

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Abstract

La présente invention concerne un appareil de détection et un dispositif terminal, destinés à être utilisés pour améliorer la précision de la reconnaissance optique sous un écran d'affichage. Le dispositif de détection comprend : un composant électroluminescent utilisé pour émettre une lumière initiale ; un composant de commande utilisé pour commander une direction de propagation de la lumière de rétroaction émergeant d'un écran d'affichage transmettant la lumière de façon à former une lumière d'imagerie, la lumière de rétroaction étant la lumière réfléchie, sous l'effet de l'émission de la lumière initiale lorsqu'un objet s'approche ou est en contact avec l'écran d'affichage, par des lignes sur le côté de l'objet proche de l'écran d'affichage ou en contact avec l'écran d'affichage ; et un capteur d'image utilisé pour former, par réception de la lumière d'imagerie, des données d'une image pour représenter les lignes sur le côté de l'objet proche de l'écran d'affichage ou en contact avec l'écran d'affichage.
PCT/CN2018/083219 2017-04-14 2018-04-16 Appareil de détection et dispositif terminal WO2018188670A1 (fr)

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CN201710245989 2017-04-14
CN201710245989.6 2017-04-14
CN201710643113.7A CN108734073B (zh) 2017-04-14 2017-07-31 一种检测装置及终端设备
CN201710643113.7 2017-07-31
CN201720946650.4 2017-07-31
CN201720946851.4U CN207586941U (zh) 2017-04-14 2017-07-31 一种检测装置及终端设备
CN201720946851.4 2017-07-31
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