CN106657624A - Cover plate and terminal - Google Patents

Abstract

The present invention provides a cover plate and a terminal, the cover plate includes: a first area and a second area; the lower surface of the first area is provided with a first adhesion layer and a second adhesion layer, and the second adhesion layer is located The lower surface of the first adhesion layer, the second adhesion layer includes a transmission area, and the first adhesion layer covers the transmission area of the second adhesion layer, so that from the appearance surface of the cover plate The transmission area is concealed, and a barrier layer is provided on the lower surface of the second area. The cover plate and terminal of this embodiment, by setting a barrier layer in the area between the receiver and the cover plate, prevents the signal diffracted inside the transmitter from entering the receiver, thereby avoiding the full range of the receiver and improving the accuracy of detection .

Description

Cover and terminal

technical field

The invention relates to the technical field of terminals, in particular to a cover plate and a terminal.

Background technique

Currently, when the terminal detects an obstacle approaching the screen during a call, the screen is turned off. And when it is detected that the blocking object is away from the screen, the screen is turned on. The whole detection process is mainly carried out by a proximity sensor module, which usually includes an infrared transmitter and an infrared receiver. The infrared emitter emits infrared light, which is reflected by the blocking object to form reflected light. After receiving the reflected light, the infrared receiver judges whether the obstacle is approaching or moving away from the terminal according to the received light intensity value.

However, in actual use, since there is a certain distance between the infrared emitter and the infrared receiver, the light emitted by the infrared emitter is diffracted at this part. That is to say, the light actually received by the infrared receiver includes internal diffracted light and external reflected light, which leads to the full range of the infrared receiver and reduces the detection accuracy.

Contents of the invention

Embodiments of the present invention provide a cover plate and a terminal to improve detection accuracy.

An embodiment of the present invention provides a cover plate, which includes: a first area and a second area; the lower surface of the first area is provided with a first adhesion layer and a second adhesion layer, and the second adhesion layer is located on the The lower surface of the first adhesive layer, the second adhesive layer includes a transmissive area, the first adhesive layer covers the transmissive area of the second adhesive layer, so that the cover is hidden from the appearance surface of the cover plate The transmissive region, the lower surface of the second region is provided with a barrier layer.

An embodiment of the present invention also provides a terminal, which includes the above-mentioned cover plate and a sensor module; the sensor module is located under the cover plate, the sensor module includes a transmitter and a receiver, and the transmitter is used for A detection signal is sent out, and the receiver is used for receiving a reflection signal formed after the detection signal is reflected by an obstacle.

An embodiment of the present invention also provides a terminal, which includes a housing, a circuit board, and the above cover, the circuit board is installed inside the housing, and the cover is connected to the housing.

An embodiment of the present invention provides a cover plate, which includes: a first adhesion layer and a second adhesion layer arranged on the lower surface of the cover plate, the first adhesion layer includes a first area and a second area, and the first adhesion layer includes a first area and a second area. A region and a second region are arranged adjacently, and the transmittance of the first region is greater than the transmittance of the second region;

The second adhesion layer includes a third area and a fourth area, the transmittance of the third area is greater than the transmittance of the fourth area; the first adhesion layer covers the second area of the adhesion layer third area.

The cover plate and terminal of this embodiment, by setting a barrier layer in the area between the receiver and the cover plate, prevents the signal diffracted inside the transmitter from entering the receiver, thereby avoiding the full range of the receiver and improving the accuracy of detection .

Description of drawings

Fig. 1 is a schematic structural diagram of a terminal provided by a preferred embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of the cover plate provided by the preferred embodiment of the present invention.

Fig. 3 is another schematic cross-sectional view of the cover plate provided by the preferred embodiment of the present invention.

Fig. 4 is another schematic cross-sectional view of the cover plate provided by the preferred embodiment of the present invention.

Fig. 5 is another schematic cross-sectional view of the cover plate provided by the preferred embodiment of the present invention.

Fig. 6 is yet another schematic cross-sectional view of the cover plate provided by the preferred embodiment of the present invention.

Fig. 7 is a schematic structural diagram of the panel assembly provided by the preferred embodiment of the present invention.

Fig. 8 is another structural schematic diagram of the panel assembly provided by the preferred embodiment of the present invention.

FIG. 9 is a flowchart of a method for adjusting screen brightness provided by a preferred embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

The terms "first", "second" and "third" in the present invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to FIGS. 1 to 6 , the cover 10 of this embodiment is located above the terminal 1000 . In this embodiment, the cover plate 10 is a glass cover plate. The cover plate 10 is disposed on and connected to the casing 200 of the terminal 1000 . The cover plate 10 includes a non-display area 15 and a display area 16 , and the non-display area 15 of the cover plate 10 includes a top non-display area 151 and a bottom non-display area 152 . The non-display area 151 on the top is provided with an opening 300 for the receiver to emit sound. The non-display area 151 is also provided with a front camera hole (not shown in the figure). In some embodiments, the front camera hole can be omitted or removed. Referring to the terminal 1000 shown in FIG. 1 , usually a light-shielding material, such as ink, is sprayed on the lower surface of the non-display area 15 . The ink can not only meet the user's requirements for different colors of the terminal 1000, but also can cover the internal structure of the terminal 1000 to achieve the effect of beautifying the terminal 1000.

A fingerprint identification module 400 is disposed on the bottom non-display area 152 . The display area 16 of the cover 10 can be used for displaying pictures or for the user to perform touch control and the like. The material of the cover plate 10 can be made of materials such as glass, ceramics or sapphire.

2 to 6 are schematic cross-sectional views of the cover plate in the non-display area. As shown in FIG. 2 , the non-display area 151 includes two first areas 11 , 12 and a second area 13 ; the second area 13 is located between the two adjacent first areas 11 and 12 . It can be understood that, in a plan view, the first regions 11 , 12 surround the second region 13 , that is, the second region 12 is surrounded by first regions.

The lower surface of the first region 11 on the left is provided with three layers of first adhesion layers 111 - 113 and a second adhesion layer 114 . The second adhesion layer 114 is located below the three first adhesion layers 111-113. The second adhesion layer 114 corresponding to the first region 11 on the left is provided with a first transmission region 115 and a non-transmission region (the second adhesion layer 114 other than the first transmission region, not shown in the figure). Wherein, the first adhesive layers 111 - 113 cover the first transmissive area 115 of the second adhesive layer 114 , so that the first transmissive area 115 is hidden from view from the appearance of the cover plate 10 . That is, the first adhesion layer 111 - 113 may be a flat or complete first adhesion layer, that is, the entire lower surface of the first region 11 is coated with the material of the first adhesion layer. Wherein, the first transmissive area 115 is defined by the non-transmissive area.

In one embodiment, the first adhesion layers 111-113 are white ink layers, and the second adhesion layer 114 is a black ink layer. It can be understood that the ink colors in this embodiment are not limited to white and black, and may also include other colors, such as gold, blue and other colors. The first adhesion layers 111-113 and the second adhesion layer 114 can be formed by spraying process, such as electrostatic spraying, powder spraying process and so on. In one embodiment, the transmittance of the first adhesion layer 111-113 for the signal is relatively high, and the transmittance of the second adhesion layer 111-113 for the signal is relatively low, which is equivalent to blocking the signal. The signal can be infrared, Laser, ultrasonic and other signals.

In one embodiment, the transmittance of the first adhesion layer 111-113 for infrared rays is relatively high, and the transmittance of the second adhesion layer 114 for infrared rays is relatively low, which means that it can block infrared rays. It can be understood that the transmittance of the first adhesion layers 111-113 can be set according to actual requirements. For example, the transmittance of the first adhesion layer 111-113 for visible light (such as visible light with a wavelength of 550nm) is between 2% and 10%, and the transmittance for infrared rays (such as infrared rays with a wavelength of 850nm) is greater than or equal to 80%.

The lower surface of the right first region 12 is also provided with three layers of first adhesion layers 121-123 and a second adhesion layer 124, and the second adhesion layer 124 is located below the three layers of first adhesion layers 121-123. The second adhesive layer 124 is provided with a second transmissive area 125 and a non-transmissive area (the second adhesive layer 124 other than the second transmissive area 125 is not shown in the figure). The first adhesive layer 121 - 123 covers the second transmissive area 125 of the second adhesive layer 124 such that the second transmissive area 125 is hidden from view from the appearance of the cover plate 10 . Wherein, the second transmissive area 125 is defined by the non-transmissive area.

In one embodiment, the materials of all the first adhesion layers in the first region 11 are the same, and the materials of all the second adhesion layers in the first region 11 are also the same. It can be understood that the materials of all the first adhesion layers in the first region 11 may also be different.

Wherein the transmittance of each first adhesion layer in the first region 11, 12 is greater than the transmittance of the second adhesion layer.

The first transmissive area 115 and the second transmissive area 125 can transmit infrared, laser, ultrasonic and other signals. In one embodiment, the first transmissive region 115 and the second transmissive region 125 are through holes. That is, taking the second adhesion layer 114, 124 as a black ink layer as an example, no black ink is coated in the first transmissive area 115 and the second transmissive area 125, while the first transmissive area 115 and the second transmissive area 115 The second adhesion layer outside the transmissive area 125 is coated with black ink.

In one embodiment, a wave-transparent material is coated in the first transmissive region 115 and the second transmissive region 125, and the second adhesion layer outside the first transmissive region 115 and the second transmissive region 125 is coated with Cloth has wave-impermeable material. The transmittance of the wave-transparent material for signals is greater than the transmittance of the wave-impermeable material for signals.

For example, a light-transmitting material is coated in the first transmission region 115 and the second transmission region 125, while the second adhesion layer outside the first transmission region 115 and the second transmission region 125 is coated with an opaque material. Light materials, such as black ink. The light-transmitting material is different from the material and color of the black ink, for example, the light-transmitting material is ink of other colors that can transmit infrared rays. It can be understood that the transmittance of the light-transmitting material for infrared rays is greater than or equal to the transmittance of white ink for infrared rays.

The shapes of the first transmissive area 115 and the second transmissive area 125 can be set according to actual needs. For example, it may be in a shape such as a circle, a rectangle, or a rounded rectangle. The sizes of the first transmissive area 115 and the second transmissive area 125 can also be set according to actual needs. For example, when the shapes of the first transmissive region 115 and the second transmissive region 125 are both circular, the aperture may be between 3mm-6mm, preferably between 2.5mm-5mm. In one embodiment, the aperture of the second transmissive region 125 is larger than the aperture of the first transmissive region 115 .

In one embodiment, the area of the second transmissive region 125 is larger than the area of the first transmissive region 115 .

The first adhesion layer 111 is located on the same layer as the first adhesion layer 121, the first adhesion layer 112 is located on the same layer as the first adhesion layer 122, and the first adhesion layer 113 is located on the same layer as the first adhesion layer 123. . Wherein, the thickness of the first adhesion layer 111 is equal to the thickness of the first adhesion layer 121 , and the rest of the layers are similar. That is, the thickness of each layer is equal, and each layer is flush. The second adhesion layer 114 and the second adhesion layer 124 are also located at the same layer, the thickness of the second adhesion layer 114 is equal to the thickness of the second adhesion layer 124 , and both are flush.

A transmissive film layer 131 and a barrier layer located below the transmissive film layer 131 are disposed on the lower surface of the second region 13 , and the barrier layer includes two barrier sub-layers 132 and 133 . The blocking sub-layers 132 and 133 are used to block signals inside the first adhesion layer between two adjacent first regions 11 from entering the second transmissive region 125 . In one embodiment, the blocking sub-layers 132 and 133 are used to block light inside the first adhesion layer between two adjacent first regions 11 from entering the second transmissive region 125 . The material of the blocking sub-layers 132, 133 may be a wave-impermeable material or a wave-absorbing material. The wave-absorbing material can absorb light waves or ultrasonic waves. The wave-impermeable material, that is, the non-wave-transparent material, can block light waves or ultrasonic waves. In one embodiment, the absorbing material is, for example, a light absorbing material. For example, when the material of the blocking sub-layers 132 and 133 is an opaque material, the blocking sub-layers 132 and 133 are black ink layers. The thickness of the blocking sub-layer 132 is equal to the thickness of the first adhesion layer 112 , and both are flush. The thickness of the blocking sub-layer 133 is equal to the thickness of the first adhesion layer 113 , and both are flush. In one embodiment, an opaque film layer 134 is disposed on the lower surfaces of the barrier layers 132 and 133 . The thickness of the opaque film layer 134 is equal to that of the second adhesion layer 114 , 124 , and the three are flush with each other. The material of the opaque film layer 134 is the same as that of the second adhesion layer 114 , 124 .

It can be understood that although the barrier layer in the second region 13 in FIG. 2 includes two barrier sub-layers, this does not constitute a limitation to the present invention. In one embodiment, as shown in FIG. 3 , the barrier layer on the lower surface of the second region 13 includes three barrier sublayers, that is, the uppermost transmissive film layer 131 of the second region 13 in FIG. 2 is replaced with a barrier layer. Sublayer 135. The material of the blocking sub-layer 135 may also be a wave-impermeable material or a wave-absorbing material. It can be understood that when the material of the blocking sub-layer 135 is a wave-impermeable material, a wave-absorbing material may also be mixed in the light-impermeable material. Wherein, a wave-absorbing material may also be mixed in the non-transmissive film layer 134 .

In one embodiment, as shown in FIG. 4 , a single-layer barrier layer 132 is disposed on the lower surface of the second region 13 , and a transmissive film layer 136 is also disposed below the barrier layer 132 . That is, a transmissive thin film layer 136 is disposed between the non-transmissive thin film layer 134 and the barrier layer 132 .

The material of the transmissive film layers 131 and 136 may be a wave-transparent material. In one embodiment, the material of the transmissive film layer 131 , 136 can be a transparent material, such as white ink, preferably the same material as that of the first adhesion layer 121 , 111 . Of course, the two can also be made of different materials. The manufacturing process of the transmissive film layers 131 and 136 is the same as that of the first adhesion layer 121 . In a specific manufacturing process, the uppermost first adhesion layer 111 , 121 of the first region 11 and the uppermost transmissive film layer 131 of the second region 13 can be manufactured in the same manufacturing process. The lowermost first adhesion layer 113 , 123 of the first region 11 and the lowermost transmissive film layer 136 of the second region 13 can be manufactured in the same manufacturing process. In one embodiment, the materials of the transmissive film layers 131 and 136 only include wave-transparent materials.

In one embodiment, in order to better shield light, the materials of the transmissive film layers 131 and 136 may be mixed with absorbing materials.

In one embodiment, any material of the above-mentioned opaque film layer 134 may also be replaced with a wave-absorbing material.

In one embodiment, in order to better reduce internal diffracted light, the area of the second region 13 is within a preset range. It can be understood that the areas of the above two first regions 11 and 12 may be the same or different.

It can be understood that, as shown in FIG. 5 , only one barrier layer 137 may be provided on the lower surface of the second region 13 , and the barrier layer 137 is flush with the lowermost second adhesion layers 114 , 124 of the first region 11 . . That is, the thickness of the barrier layer 137 is equal to the sum of the thicknesses of the three first adhesion layers 111 - 113 and the second adhesion layer 114 .

It can be understood that although the first region 11 in FIGS. 2 to 5 includes 3 first adhesion layers, it does not limit the present invention. The first region 11 may also include 1, 2 or more than 3 first adhesion layers. For example, as shown in FIG. 6 , the first region 11 includes a first adhesion layer. Although the number of layers of the second adhesion layer in the three regions 11-13 in FIGS. 2 to 6 is one layer, it does not limit the present invention. Preferably, the number of layers of the second adhesion layer in the three regions can also be 2 layers or more than 2 layers. At this time, a transmissive region is set in each layer of the second adhesion layer in the first region 11, and each The position of the transmissive area of the second adhesion layer corresponds to that of the layer.

It can be understood that although the non-display area 151 of the cover plate 10 in FIGS. 2 to 6 only includes two first areas and one second area, this does not limit the present invention. It can be understood that the non-display area 151 may also include more than two first areas and second areas, and the number of the second areas may also be two.

In the cover plate of this embodiment, by setting a barrier layer in the area between the receiver and the cover plate, the signal diffracted inside the transmitter is prevented from entering the receiver, thereby avoiding the full range of the receiver and improving the detection accuracy.

Referring to FIGS. 7 and 8 , the panel assembly 100 of this embodiment includes a cover plate 10 and a sensor module 20 ; as shown in FIG. 7 , the sensor module 20 of this embodiment is disposed on a circuit board 30 . And the sensor module 20 is located under the cover plate 10 . The sensor module 20 includes a transmitter 21 and a first receiver 22 , and may also include an ambient light sensor 23 . In one embodiment, the transmitter 21 is used to send out detection signals, and the first receiver 22 is used to receive reflection signals formed after the detection signals emitted by the transmitter 21 are reflected by obstacles.

In one embodiment, the emitter 21 is used to emit infrared rays. The emitter 21 can also be used to emit laser light. In one embodiment, the transmitter 21 can also be used to emit ultrasonic waves. For example, the emitter 21 may be a light emitter, such as an infrared emitter, such as an IR LED (infrared light emitting diode). The first receiver 22 is a light receiver. The emitter 21 is located below the first transmissive region 115 , that is, the position of the emitter 21 corresponds to the position of the first transmissive region 115 .

Both the first receiver 22 and the ambient light sensor 23 are located below the second transmissive area 125 , ie corresponding to the position of the second transmissive area 125 . The detection signal sent by the transmitter 21 is reflected by the barrier 40 to form a reflected signal, and the first receiver 22 is used for receiving the reflected signal. In one embodiment, the detection light emitted by the transmitter 21 is reflected by the barrier 40 to form an optical signal, and the first receiver 22 is used to receive the optical signal.

It can be understood that, in order to ensure the accuracy of the signal of the receiver, in an embodiment, the aperture of the second transmission region 125 is larger than the aperture of the first transmission region 115 . In one embodiment, the area of the second transmissive region 115 is larger than the area of the first transmissive region 125 .

Specifically, taking the emitter 21 as an example of an optical emitter, the emitter 21 generates an optical signal, and the optical signal passes through the first transmission region 115 and the first adhesion layer 111-113 to be transmitted to the outside world. 40 and then reflected to the cover 10, and then reflected by the cover 10 to the barrier 40, so that after being reflected by the barrier 40 and the cover 10, the optical signal passes through the first adhesion layers 121-123 and The second transmissive area 125 is received by the first receiver 22 .

For the ambient light sensor 23: the ambient light passes through the first adhesion layers 121-123 and the second transmissive area 125, at this time, the ambient light sensor 23 will sense the ambient light.

The first receiver 22 and the ambient light sensor 23 can be integrated into the same module. For example, taking the transmitter 21 as an optical transmitter as an example, the receiving end of the integrated module can not only receive the invisible light emitted by the transmitter 21, but also sense the visible light from the external environment. For example, the integrated module can receive light signals such as infrared signals emitted by the transmitter 21, and can also sense ambient light signals.

The sensor module 20 can judge whether the terminal 1000 is close to the face by monitoring the signal emitted by the transmitter 21 when the terminal 1000 is talking, and can turn off the backlight of the screen when it is judged that the terminal 1000 is close to the face, so as to save power and function to prevent malfunction.

In one embodiment, the sensor module 20 can judge whether the terminal 1000 is close to the face by monitoring the infrared light emitted by the transmitter 21 (such as IR LED) when the terminal 1000 is talking. The backlight of the screen can be turned off to save power and prevent malfunctions.

In an embodiment, the terminal 1000 may obtain the light intensity value of the first receiver 22, and then compare the light intensity value with a preset proximity threshold and a preset distance threshold respectively. If the light intensity value is greater than the preset proximity threshold, the terminal 1000 turns off the screen. If the light intensity value is less than the preset distance threshold, the terminal 1000 turns on the screen. If the light intensity value is between the preset approach threshold and the preset far threshold, the terminal 1000 may not operate. Wherein the preset distance threshold is greater than the preset approach threshold.

In one embodiment, the distance between the transmitter 21 and the first receiver 22 is between 6 mm and 14 mm. Preferably, the distance between the transmitter 21 and the first receiver 22 is between 10 mm and 12 mm. The distance between the transmitter 21 and the first receiver 22 is the distance between the geometric center of the transmitter 21 and the geometric center of the first receiver 22 .

In another embodiment, as shown in FIG. 8 , the cover plate 10 includes two second regions 14 , 15 and three first regions 11 , 16 , 12 ; the first region 16 has a third transmission region 165 . The sensor module 20 also includes a second receiver 24, the detection signal sent by the transmitter 21 is reflected by the barrier 40 to form a short-distance signal and a long-distance signal, and the first receiver 22 is used to receive the long-distance signal, The second receiver 24 is used for receiving the short-distance signal.

In one embodiment, the first receiver 22 and the second receiver 24 are used for receiving infrared rays. In one embodiment, the first receiver 22 and the second receiver 24 can also be used to receive laser light. In one embodiment, the first receiver 22 and the second receiver 24 can also be used to receive ultrasonic waves.

In one embodiment, the detection light emitted by the transmitter 21 is reflected by the barrier 40 to form a low beam signal and a high beam signal, the first receiver 22 is used to receive the high beam signal, and the second receiver 24 is used to to receive the low beam signal. The second receiver 24 corresponds to the position of the third transmissive area 165 . Specifically, the second receiver 24 is used to receive the low beam signal through the third transmission area 165 .

When the first receiver 22 is a light receiving chip, the range corresponding to the light receiving chip is determined by the number of bits of the light receiving chip. For example, the ranges corresponding to 8-bit (ie 8bit), 10-bit (ie 10bit), and 12-bit (ie 12bit) light receiving chips are 256, 1024, and 4096 respectively. Since this embodiment uses the blocking layer to block the light diffracted inside the transmitter, it can prevent too much invalid light from entering the receiver, so there is no need for a light receiving chip with a larger range, that is, a light receiving chip with a lower number of digits can be selected .

The first receiver 22 in this embodiment is a receiving chip with a bit number less than or equal to 12 bits, for example, a 10-bit receiving chip can be selected. In one embodiment, the first receiver 22 in this embodiment is a light receiving chip whose number of digits is less than or equal to 12 bits. For example, a 10-bit light receiving chip can be selected. At this time, the corresponding range of the light receiving chip is 1024. It can be understood that the range of the second receiver 24 may be smaller than or equal to the range of the first receiver 22 .

In practical application, in one embodiment, the terminal 1000 can obtain the first detection value of the first receiver 22 and the second detection value of the second receiver 24, and then calculate the first detection value and the second detection value The average value is compared with the preset proximity threshold and the preset distance threshold respectively. If the average value is greater than the preset proximity threshold, the terminal turns off the screen. If the average value is less than the preset distance threshold, the terminal lights up the screen.

In one embodiment, the terminal 1000 can obtain the first light intensity value of the first receiver 22 and the second light intensity value of the second receiver 24, and then calculate the first light intensity value and the second light intensity value The average value is compared with the preset proximity threshold and the preset distance threshold respectively. If the average value is greater than the preset proximity threshold, the terminal turns off the screen. If the average value is less than the preset distance threshold, the terminal lights up the screen.

It can be understood that when the number of the transmission area is more than 1, the total number of the transmission area is the same as the total number of the transmitter and the receiver. It can be understood that the cover plate 10 in the panel assembly can be any one of the above-mentioned cover plates, and the sensor module 20 in the panel assembly can be any one of the above-mentioned sensor modules. Wherein, the panel assembly 100 may be a touch panel assembly, a panel assembly, a touch panel assembly or a terminal panel assembly with other functions, and the like.

Since the diffraction signal inside the transmitter will be blocked from entering the receiver through the barrier layer, the receiver is prevented from receiving invalid signals, that is, the receiver only receives the reflected signal of the barrier, thereby avoiding the internal diffraction signal from affecting the transmitter. The signal is causing interference. In addition, there is no need for a receiver with a larger range, that is, the receiver can use a receiving chip with a lower number of digits, which not only improves the detection accuracy, but also reduces the production cost.

In one embodiment, since the diffracted light inside the emitter is prevented from entering the receiver through the barrier layer, the receiver is prevented from receiving invalid light, that is, the receiver only receives the reflected light from the barrier, thereby avoiding Interfere with emitted light. In addition, there is no need for a receiver with a larger range, that is, the receiver can use a light receiving chip with a lower number of digits, which not only improves the detection accuracy, but also reduces the production cost.

It can be understood that the above three first regions 11 , 12 , 16 may have the same or different areas.

It can be understood that the above non-display area 151 of the cover plate 10 may also include more than three first areas and more than two second areas. Preferably, the areas of the second regions are all within a preset range.

It can be understood that although only one transmitter is provided in Figs. 7 and 8, this does not limit the present invention. The panel assembly 100 of this embodiment may include two or more emitters. The number of the receivers may be two or more.

In the panel assembly of this embodiment, a blocking layer is provided in the area between the receiver and the cover plate to prevent the signal diffracted inside the transmitter from entering the receiver, thereby avoiding the full range of the receiver and improving the detection accuracy.

1 to 8, this embodiment also provides a terminal 1000 including: a housing 200, a circuit board 30 and any one of the above-mentioned cover plates 10, the circuit board 30 is installed inside the housing 200, and the cover plate 10 and The housing 200 is connected.

1 to 8, this embodiment also provides a terminal 1000 including: a housing 200, a circuit board 30, and any one of the above-mentioned panel assemblies 100, the panel assembly 100 is connected to the housing 200, and the panel assembly 100 The sensor module 20 is electrically connected to the circuit board 30 .

In the terminal of this embodiment, by setting a barrier layer in the area between the receiver and the cover plate, the signal diffracted inside the transmitter is prevented from entering the receiver, thereby avoiding the full range of the receiver and improving the accuracy of detection.

This embodiment also provides a method for adjusting screen brightness, as shown in FIG. 9, the method includes:

S101. Acquire a first detection value of a first receiver and a second detection value of a second receiver.

For example, in an implementation manner, the detection value may be a light intensity value, and the terminal may acquire the first light intensity value of the first receiver 22 and the second light intensity value of the second receiver 24 .

It can be understood that the structures of the first receiver and the second receiver may be the same as those in the foregoing embodiments, or may be existing structures.

S102. Calculate an average value of the first detection value and the second detection value.

For example, the terminal calculates the average value of the first light intensity value and the second light intensity value.

S103. Compare the average value with a preset threshold to obtain a comparison result.

For example, the terminal compares the average value with a preset threshold to determine whether the obstacle is approaching or moving away from the terminal. The preset threshold may include a preset proximity threshold and a preset distance threshold, and the preset proximity threshold is greater than the preset distance threshold. Wherein step S103 may include:

S1031. Determine whether the average value is greater than a preset proximity threshold.

For example, the terminal judges whether there is an obstacle approaching the screen of the terminal. Since the light emitted by the emitter is reflected back into the cover when an obstacle approaches, the light intensity value received by the receiver is greater than the preset proximity threshold. That is, the average value of the light intensity values received by the first receiver or the second receiver is greater than the preset proximity threshold. If the terminal determines that the average value is greater than the preset proximity threshold, the terminal executes S1032. If the terminal determines that the average value is less than or equal to the preset proximity threshold, the terminal may execute step S1033.

S1032. If it is determined that the average value is greater than the preset proximity threshold, determine that the obstacle is close to the screen of the terminal.

S1033. If it is determined that the average value is less than or equal to the preset proximity threshold, determine whether the average value is less than the preset distance threshold.

For example, when the terminal determines that there is no obstacle approaching the terminal, the terminal continues to determine whether the obstacle is away from the screen. Since the light emitted by the transmitter is not blocked by the obstacle when the obstacle is far away, the reflected light is reduced, so the receiver can only receive a small amount of light, that is, the light intensity value is less than the preset distance away threshold. If the terminal determines that the average value is less than the preset distance threshold, the terminal executes S1034, and if the terminal determines that the average value is greater than or equal to the preset distance threshold, the terminal may return to step S1033.

S1034. If it is determined that the average value is smaller than the preset distance threshold, determine that the obstacle is far away from the screen of the terminal.

S104. Control the screen brightness of the terminal according to the comparison result.

For example, the terminal controls the brightness of the screen according to the comparison result in step S103. This control is, for example, a light-off or light-on operation. Specifically, this step S104 may include:

S1041. When the terminal determines that there is an obstacle approaching the screen of the terminal, the terminal turns off the screen.

For example, when the terminal determines that there is an obstacle approaching the terminal, the terminal turns off the screen, that is, the brightness value of the screen is the minimum at this time.

S1042. When the terminal determines that the obstacle is far away from the screen of the terminal, turn on the screen.

For example, when the terminal determines that there is an obstacle away from the screen, the terminal lights up the screen, that is, the terminal adjusts the brightness value of the screen from a minimum to a preset display brightness.

Since the existing detection method for detecting whether there is an obstacle approaching the screen is mainly judged by the data of a single receiver, it is prone to misjudgment.

Although the above method takes an optical signal as an example, it does not limit the present invention. The method in this embodiment is also applicable to other types of signals.

The method for adjusting the brightness of the screen in this embodiment obtains the first detection value of the first receiver and the second detection value of the second receiver; calculates the average value of the first detection value and the second detection value; The average value is compared with a preset threshold to obtain a comparison result; and the screen brightness of the terminal is controlled according to the comparison result. Since the average value of the light intensity values passing through the two receivers is compared with the preset close threshold and the preset far threshold respectively, the judgment accuracy is improved.

In the description of this specification, descriptions referring to the terms "one embodiment", "certain embodiments", "exemplary embodiments", "example", "specific examples", or "some examples" are meant to be combined with Specific features, structures, materials, or characteristics described in the preceding embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention, and those of ordinary skill in the art can make various modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined in the claims.

Claims (19)

1. A cover plate, characterized in that it comprises: a first area and a second area; the lower surface of the first area is provided with a first adhesion layer and a second adhesion layer, and the second adhesion layer is located on the The lower surface of the first adhesive layer, the second adhesive layer includes a transmissive area, the first adhesive layer covers the transmissive area of the second adhesive layer, so that the cover is hidden from the appearance surface of the cover plate The transmissive region, the lower surface of the second region is provided with a barrier layer. 2. The cover plate of claim 1, wherein the first region surrounds the second region. 3 . The cover plate according to claim 1 , wherein there are at least two first regions, and the second region is located between two adjacent first regions. 4 . 4. The cover plate according to claim 1, characterized in that, the material of the barrier layer is a wave-absorbing material. 5. The cover plate of claim 1, wherein the barrier layer comprises at least two barrier sub-layers. 6. The cover plate according to claim 5, characterized in that, the material of the barrier sub-layer is a wave-absorbing material. 7 . The cover plate according to claim 1 , wherein a transmissive film layer is further disposed between the lower surface of the second region and the barrier layer. 8 . The cover plate according to claim 7 , wherein a wave-absorbing material is mixed in the material of the transmissive film layer. 9. The cover plate according to claim 1, wherein the material of the barrier layer is a non-wave-transparent material. 10. The cover plate according to claim 1, wherein the lower surface of the barrier layer is provided with an opaque film layer. 11. The cover plate according to claim 1, wherein the area of the second region is within a preset range. 12 . The cover plate according to claim 1 , wherein the first adhesion layer is a white ink layer, and the second adhesion layer is a black ink layer. 13 . 13. The cover plate according to any one of claims 1 to 12, wherein the transmission area is a through hole. 14. A terminal, characterized in that it comprises: a cover plate and a sensor module; the sensor module is located under the cover plate, the sensor module includes a transmitter and a receiver; the transmitter is used to send The detection signal, the receiver is used to receive a reflection signal formed after the detection signal is reflected by an obstacle, and the cover plate is the cover plate according to any one of claims 1-13. 15. The terminal according to claim 14, wherein the receiver is a receiving chip with a bit number less than or equal to 12 bits. 16. The terminal according to claim 14, wherein the sensor module further comprises: an ambient light sensor. 17. The terminal according to claim 14, wherein the cover plate comprises at least two transmissive areas, and the sum of the number of the transmitters and the number of the receivers is equal to the number of the transmissive areas. 18. A terminal, characterized by comprising: a housing, a circuit board, and a cover according to any one of claims 1-13, the circuit board is installed inside the housing, and the cover and The housing is connected. 19. A cover plate, characterized by comprising: a first adhesion layer and a second adhesion layer arranged on the lower surface of the cover plate, the first adhesion layer includes a first area and a second area, and the first adhesion layer A region and a second region are arranged adjacently, and the transmittance of the first region is greater than the transmittance of the second region; The second adhesion layer includes a third area and a fourth area, the transmittance of the third area is greater than the transmittance of the fourth area; the first adhesion layer covers the second area of the adhesion layer third area.