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WO2018192208A1 - Source de lumière à del, barre de lumière et dispositif d'affichage - Google Patents

Source de lumière à del, barre de lumière et dispositif d'affichage Download PDF

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Publication number
WO2018192208A1
WO2018192208A1 PCT/CN2017/109345 CN2017109345W WO2018192208A1 WO 2018192208 A1 WO2018192208 A1 WO 2018192208A1 CN 2017109345 W CN2017109345 W CN 2017109345W WO 2018192208 A1 WO2018192208 A1 WO 2018192208A1
Authority
WO
WIPO (PCT)
Prior art keywords
barrier
quantum dot
layer formed
light
layer
Prior art date
Application number
PCT/CN2017/109345
Other languages
English (en)
Chinese (zh)
Inventor
李泽龙
潘俊
强科文
Original Assignee
深圳Tcl新技术有限公司
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
Application filed by 深圳Tcl新技术有限公司 filed Critical 深圳Tcl新技术有限公司
Publication of WO2018192208A1 publication Critical patent/WO2018192208A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials
    • H10H20/8513—Wavelength conversion materials having two or more wavelength conversion materials
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/10—Materials and properties semiconductor
    • G02F2202/108—Materials and properties semiconductor quantum wells
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/01—Manufacture or treatment
    • H10H20/036—Manufacture or treatment of packages
    • H10H20/0361—Manufacture or treatment of packages of wavelength conversion means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials

Definitions

  • the utility model relates to the field of LED display, in particular to an LED light source, a light bar and a display device.
  • a conventional LED light source includes a blue light chip that emits blue light when it operates.
  • the blue light needs to be converted into white light by a wavelength conversion portion disposed outside the LED light source, and supplied to a light bar or a display device. Since the conventional wavelength conversion portion is disposed outside the LED light source, it is necessary to cover the entire LED light source to convert most of the blue light into white light.
  • quantum dots Since the quantum dots are excited, a laser having a wide color gamut can be generated, in order to make the backlight of the display device have a wider color gamut.
  • Existing backlight modules mostly use quantum tubes or quantum films to encapsulate quantum dots, which are placed in the external light path of the LED light source to obtain white light with a wide color gamut.
  • quantum film method when a quantum film method is employed, a large number of quantum dots are required.
  • the quantum tube method When the quantum tube method is adopted, the quantum tube needs to be fixed by an additional device, and the quantum tube is more susceptible to damage due to impact or vibration, resulting in an increase in cost. In summary, the production cost of a quantum dot applied to a display device is high.
  • the main object of the present invention is to provide an LED light source, a light bar and a display device, which aim to reduce the production cost of the display device.
  • the present invention provides an LED light source, a light bar and a display device, wherein the LED light source comprises a bracket, a blue chip and a wavelength conversion portion, and the bracket has a cavity with an opening facing upward;
  • the blue light chip is disposed at a bottom of the cavity;
  • the wavelength conversion portion covers the blue light chip; and
  • the wavelength conversion portion includes a red light quantum dot, a barrier agent, and a green phosphor.
  • the red light quantum dots have a diameter of 1 to 10 nanometers.
  • the wavelength converting portion is formed by staggered doping and mixing of the barrier agent, the red light quantum dot, and the green phosphor.
  • the wavelength converting portion is a multi-layer structure; the wavelength converting portion includes: a first fluorescent layer formed by a green phosphor disposed at a bottom of the cavity, and is coated on the first fluorescent a first barrier layer formed by the barrier agent on the layer, and a first quantum dot layer formed by the red light quantum dots disposed on the first barrier layer, and coated on the first a second barrier layer formed by the barrier agent on the quantum dot layer.
  • the wavelength converting portion further includes a third barrier layer formed by a barrier agent applied between the first quantum dot layer and a sidewall of the bracket.
  • the wavelength conversion portion is a multi-layer structure; the wavelength conversion portion includes: a fourth barrier layer formed by a barrier agent applied to the bottom of the cavity, and is laid on the fourth barrier layer a second quantum dot layer formed by the red light quantum dots, and a fifth barrier layer formed by the barrier agent coated on the second quantum dot layer, and green layered on the fifth barrier layer A second fluorescent layer formed by the photo-phosphor.
  • the wavelength converting portion further comprises a sixth blocking layer formed by a barrier agent applied between the second quantum dot layer and a sidewall of the bracket.
  • the bracket is tapered from the bottom wall thereof.
  • the present invention also provides a light bar, the light bar includes an LED light source, the LED light source includes: a bracket, a blue chip and a wavelength conversion portion, the bracket has a cavity with an opening facing upward; the blue light A chip is disposed at a bottom of the cavity; the wavelength converting portion covers the blue chip; and the wavelength converting portion includes a red light quantum dot, a barrier agent, and a green phosphor.
  • the present invention also provides a display device, the display device includes an LED light source, the LED light source includes: a bracket, a blue chip and a wavelength conversion portion, the bracket has a cavity with an opening upward; the blue light A chip is disposed at a bottom of the cavity; the wavelength converting portion covers the blue chip; and the wavelength converting portion includes a red light quantum dot, a barrier agent, and a green phosphor.
  • the display device is a television, a mobile phone or a computer display.
  • the LED light source of the utility model is used for installing a blue light chip, a gold wire and a conductor of an LED light source, and the gold wire connecting conductor and the blue light chip are turned on, so that the blue light chip is electrically conductive.
  • the electrical conductor may be a copper piece to mount the stent patch on the circuit board; the electrical conductor may also be a conductive pin to allow the bracket to be inserted into the circuit board.
  • the bracket has a cavity with an opening facing upward, and the cavity is used for accommodating the blue chip, the gold wire and the conversion part, so that the light emitted by the blue chip is gathered in the cavity, and the light is emitted upward toward the opening; for protecting the blue chip
  • the blue chip and the gold wire are placed in the cavity and the bracket is integrally packaged in the lamp bead of the LED, and the path of the light in the lamp bead forms an internal optical path.
  • the chip is a blue chip for emitting blue light, wherein the blue light has a peak wavelength of 430 nm to 470 nm.
  • the blue chip is disposed at the bottom of the cavity, and the light emitting surface of the blue chip is disposed upward, so that the blue light is emitted upward.
  • the other side of the blue chip is in contact with the bottom of the cavity, and is electrically connected to the copper piece at the bottom of the bracket through the gold wire to facilitate the installation of the LED light source patch.
  • the wavelength conversion portion covers the blue chip, and the blue light is incident on the wavelength conversion portion.
  • the wavelength conversion portion includes a red light quantum dot for generating laser light, a green light phosphor, and a barrier agent for blocking red light quantum dots, and the barrier agent blocks the erosion of red light quantum dots by water and oxygen.
  • the blue light excites the red light quantum dots and the green light phosphor in the wavelength conversion portion together, so that the red light quantum dots are excited by blue light to generate red light, and the green light phosphor is excited by blue light to generate green light.
  • the red light, the green light and the remaining blue light are mixed in the internal light path to form white light having a wide color gamut, so that white light in the display device does not need to be formed in the external light path of the LED light source.
  • This arrangement can reduce the amount of red light quantum dots and green phosphors, and also reduce the packaging structure such as quantum film or quantum tube, thereby reducing the production cost of the display device.
  • FIG. 1 is a schematic view showing the internal structure of a first embodiment of an LED light source of the present invention
  • FIG. 2 is a schematic view showing the internal structure of a second embodiment of the LED light source of the present invention.
  • FIG. 3 is a schematic view showing the internal structure of a third embodiment of the LED light source of the present invention.
  • FIG. 4 is a schematic view showing the internal structure of a first embodiment of the display device of the present invention.
  • FIG. 5 is a schematic view showing the internal structure of a second embodiment of the display device of the present invention.
  • Label name Label name 1 Light 13 Wavelength conversion unit 3 Diffuser 131 Red light quantum dot 4 First optical film set 1311 First quantum dot layer 5 Second backplane 1312 Second quantum dot layer 6 Middle frame 132 Green phosphor 7 Light guide 1321 First phosphor layer 8 A reflective sheet 1322 Second phosphor layer 9 Second optical film set 133 Barrier 10 LED light source 1331 First barrier layer 11 support 1332 Second barrier layer 110 Opening 1333 Third barrier layer 111 Cavity 1334 Fourth barrier layer 112 Bottom wall 1335 Fifth barrier layer 113 Side wall 1336 Sixth barrier layer 12 Blu-ray chip
  • the directional indication is only used to explain in a certain posture (such as the drawing)
  • a certain posture such as the drawing
  • first”, “second”, etc. in the embodiments of the present invention, the description of “first”, “second”, etc. is used for the purpose of description only, and is not to be understood as an indication or Implied its relative importance or implicitly indicates the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the utility model provides an LED light source, a light bar comprising a plurality of LED light sources, and a display device provided with the light bar.
  • the display device is a television, a mobile phone or a computer display.
  • the solid line with an arrow in the figure indicates a plane or a space such as a face, a cavity, a hole, or the like.
  • the LED light source 10 includes a holder 11, a blue chip 12, and a wavelength conversion portion 13.
  • the bracket 11 is used for mounting the blue chip 12, the gold wire (not shown), the electric conductor (not shown), and the like of the LED light source 10.
  • the electric conductor is connected to the bottom or the outer portion of the bracket 11 and the blue chip 12 and The gold wire is turned on to make the blue chip 12 conductively.
  • the electrical conductor may be a copper sheet, and the bracket 11 is mounted on the circuit board; the electrical conductor may also be a conductive pin, so that the bracket 11 is inserted into the circuit board.
  • the bracket 11 has a cavity 111 with an opening 110 facing upward, and the cavity 111 is for accommodating the blue chip 12 and the gold wire, so that the light emitted by the blue chip 12 is gathered in the cavity 111, and the light is emitted upward toward the opening 110;
  • the blue chip 12 and the gold wire are placed in the cavity 111 and the bracket 11 is integrally enclosed in the lamp bead, and the path of the light in the lamp bead forms an internal optical path.
  • the blue chip 12 is used to emit blue light, wherein the blue light has a peak wavelength between 430 nm and 470 nm.
  • the blue chip 12 is disposed at the bottom of the cavity 111, and the light emitting surface of the blue chip 12 is disposed upward so that the blue light is emitted upward.
  • the other side of the blue chip 12 is in contact with the bottom of the cavity 111 to turn on the blue chip 12 and the copper piece connected outside the bracket 11 to facilitate the mounting of the LED light source 10.
  • the wavelength converting portion 13 covers the blue chip 12, and the blue light is incident on the wavelength converting portion 13.
  • the wavelength converting portion 13 includes a red light quantum dot 131 for generating laser light, a green fluorescent powder 132, and a barrier 133 for blocking the red light quantum dot 131, and the barrier 133 is wrapped around the periphery of the red light quantum dot 131, and the barrier 133
  • One or more red light quantum dots 131 may be wrapped, and the barrier agent 133 blocks the erosion of the red light quantum dots 131 by water and oxygen.
  • the blue light collectively excites the red light quantum dot material 131 and the green fluorescent powder 132 in the wavelength converting portion 13 to cause the red light quantum dot 131 to be excited by blue light to generate red light, so that the green fluorescent powder 132 is excited by blue light to generate green light.
  • the red light, the green light, and the remaining blue light are mixed in the internal light path to form white light having a wide color gamut, so that white light in the display device does not need to be formed in the external light path of the LED light source 10.
  • This arrangement reduces the amount of red light quantum dots 131 and green phosphors 132, and also reduces the packaging structure such as quantum films or quantum tubes, thereby reducing the production cost of the display device.
  • the utility model also provides a light bar.
  • the light bar 1 can be applied to a display device comprising a circuit board 20 and an LED light source 10 mounted on the circuit board 20.
  • a display device comprising a circuit board 20 and an LED light source 10 mounted on the circuit board 20.
  • the display of the LED light source 10 in the display device will be described by taking a display with the LED light source 10 as an example.
  • Products such as a mobile phone, a tablet or a computer display can be referred to, but are not limited to the following embodiments.
  • a display device proposed by the utility model proposes
  • the display device includes a backlight module and a display screen disposed in the front-rear direction, and the backlight module includes the foregoing light bar 1.
  • the backlight module may be a direct-lit backlight module or a side-in-light backlight module, wherein:
  • the backlight module is a direct-lit backlight module
  • the direct-lit backlight module includes a light bar having an LED light source 10, a diffusion plate 3, and a first optical film group 4.
  • the LED light source 10 is fixed on the first backboard (not shown) by a thermal adhesive paste or a screw or a snap.
  • the LED lamp source 10 is provided with a lens for diverging light, which is not shown in the lens diagram.
  • the white light emitted from the LED lamp source 10 is incident on the diffusion plate 3 and diffused by the diffusion plate 3 onto the first optical film group 4.
  • the wavelength conversion portion 13 is disposed in the cavity 111 of the holder 11, so that the wavelength conversion portion 13 encloses the blue chip 12 in a dot-like manner.
  • the structure of the wavelength conversion portion 13 is relative to the prior art. The use of less material reduces the cost of using quantum dots for direct-lit backlight modules.
  • the backlight module is a side-input backlight module
  • the side-in-light backlight module includes a second back plate 5 , a middle frame 6 , a light guide plate 7 , and a reflective sheet.
  • the second optical film group 9 and the foregoing light bar 1 the light guide plate 7 is fixed on the second back plate 5 through the middle frame 6, and the light emitting surface of the light guide plate 7 is disposed opposite to the side of the second back plate 5, The light bar 1 is fixed to the side of the light guide plate 7 through the middle frame 6.
  • the reflection sheet 8 is disposed away from the light-emitting surface side of the light guide plate 7, and the aforementioned LED light source 10 is supplied with incident light to the light guide plate 7, and the incident light is guided to the second optical film group 9 via the light guide plate 7.
  • the LED light source 10 can directly emit a white light incident light guide plate 7 of a wider color gamut.
  • the wavelength conversion portion 13 is disposed in the cavity 111 of the bracket 11. Obviously, compared with the prior art, the wavelength conversion portion of the LED lamp source 10 of the present invention 13 Protected by the support 11, the quantum dot can be prevented from being damaged by the light guide plate 7 when being packaged in the glass tube, thereby reducing the consumable cost of the direct type backlight module.
  • the red light quantum dot 131 excites a red light having a peak wavelength between 600 nm and 680 nm
  • the material may be a first compound composed of a group II-VI element including: aN, GaP.
  • the green phosphor 132 includes a silicate material and an aluminate material to obtain green light corresponding to the green color gamut.
  • the barrier material may be: SiO2, TiO2, Al2O3, CaCO3, BaSO4, polymethyl methacrylate PMMA, polystyrene PS, acrylonitrile-butadiene-styrene copolymer ABS, polyurethane PU, silicone polymer One or more of them to effectively block water oxygen at higher temperatures.
  • the diameter of the red light quantum dot 131 is 1 to 10 nanometers, for example, 3 nanometers, 5 nanometers or 7 nanometers, or 10 nanometers, so that the diameter of the red light quantum dots 131 is sufficiently large. It is convenient to be encapsulated by the barrier agent 133, so as to prevent the red light quantum dot 131 and the barrier agent 133 from being tightly packaged, and the red light quantum dot 131 is oxidized. At the same time, the red light quantum dot 131 can also be more easily wrapped by the barrier 133, wherein when the red light quantum dot 131 is mixed with the barrier 133, the exposed surface of the single or multiple red light quantum dots 131 can be sealed in the barrier 133. In order to better block water oxygen.
  • the red light quantum dots 131 and the green phosphors 132 are disposed in the wavelength conversion portion 13 in various manners, such as a layered arrangement or a staggered doping setting.
  • the wavelength converting portion 13 is formed by staggered doping and mixing of the barrier 133, the red quantum dot 131, and the green phosphor 132, and the red light quantum dot 131 and the blocking agent 133 are first used.
  • the substrate material is formed by mixing in a ratio such that the barrier agent 133 can encapsulate the single or multiple red light quantum dots 131.
  • the mixed base material and the green phosphor 132 are doped, and the particles of the red quantum dot 131 and the green phosphor 132 are uniformly dispersed to obtain a uniform laser light.
  • the structural material of the wavelength converting portion 13 is formed, and the structural material is applied to the cavity 111 by dispensing to form a wavelength converting portion 13 covering the blue chip 12, and then with the blue chip 12 Co-packaged in the lamp bead.
  • the blue light emitted by the blue chip 12 excites the wavelength conversion portion 13 to generate red and green light-receiving laser light, which is mixed with the remaining blue light to form white light, and is incident on the lamp bead upward through the opening 110 of the bracket 11 so that the white light is on the light.
  • the internal light path of the LED light source 10 is formed in the bead, and it is not necessary to form white light outside the LED light source 10.
  • the red light quantum dots 131 and the green phosphors 132 are layered in the wavelength conversion portion 13, and the wavelength conversion portion 13 has a multilayer structure.
  • the wavelength conversion portion 13 includes a first fluorescent layer 1321 formed by the green phosphor 132 laid at the bottom of the cavity 111 for generating green light after being excited. And a first barrier layer 1331 formed by the barrier 133 coated on the first fluorescent layer 1321 for blocking water oxygen from the first fluorescent layer 1321. And a first quantum dot layer 1311 formed by the red light quantum dots 131 laid on the first barrier layer 1331 for generating red light after being excited.
  • the wavelength converting portion 13 and the blue chip 12 are co-packaged in the lamp bead.
  • the blue light emitted by the blue chip 12 excites the first fluorescent layer 1321 and the first quantum dot layer 1311, respectively, and the remaining blue light is first mixed with the green light generated by the first fluorescent layer 1321.
  • Forming mixed light the mixed light is mixed with the red light of the wider color gamut generated by the first quantum dot layer 1311 to form white light, and the light bulb is emitted upward through the opening 110 of the bracket 11 so that the white light forms an LED light source in the lamp bead.
  • the wavelength conversion portion 13 further includes a third barrier layer 1333 formed by the barrier agent 132 coated between the first quantum dot layer 1311 and the sidewall of the bracket 11 for further blocking the inner side of the sidewall. Water oxygen entering the wavelength conversion portion 13.
  • the red light quantum dots 131 and the green phosphors 132 are layered in the wavelength conversion portion 13, so that the wavelength conversion portion 13 has a multilayer structure.
  • the wavelength conversion portion 13 includes a fourth barrier layer 1334 formed by a barrier agent 133 disposed at the bottom of the cavity 111 for blocking water oxygen from the bottom of the cavity 111. And a second quantum dot layer 1312 formed by the red light quantum dots 131 laid on the fourth barrier layer 1334 for generating red light after being excited. And a fifth barrier layer 1335 formed by the barrier agent 133 coated on the second quantum dot layer 1312 for blocking water oxygen from the upper portion of the cavity 111.
  • the second fluorescent layer 1322 formed by the green phosphor 132 laid on the fifth barrier layer 1335 is used to generate green light after being excited.
  • the wavelength converting portion 13 and the blue chip 12 are co-packaged in the lamp bead.
  • the blue light emitted by the blue chip 12 excites the second quantum dot layer 1312 and the second fluorescent layer 1322, respectively, and the remaining blue light is first and the second quantum dot layer 1312 is wider.
  • the red light of the color gamut is mixed to form mixed light, and the mixed light is mixed with the green light generated by the second fluorescent layer 1322 to form white light, and the light bulb is incident upward through the opening 110 of the bracket 11 so that the white light forms an LED light source in the lamp bead.
  • the wavelength converting portion 13 further includes a sixth blocking layer 1336 formed by the barrier 133 applied between the second quantum dot layer 1312 and the sidewall of the bracket 11 for further blocking the inner side along the sidewall Water oxygen entering the wavelength conversion portion 13.
  • the bracket 11 is disposed in a divergent shape from the bottom wall 112 thereof. Specifically, the side wall 113 of the bracket 11 is disposed to be tapered from the peripheral edge of the bottom wall 112 upward.
  • the LED light source 10 When the LED light source 10 is in operation, the blue light emitted by the blue light chip 12 is diverged to the side wall 113 of the bracket 11, reflected by the side wall 113 to the wavelength conversion portion 13 for light mixing, and finally concentrated in the opening 110 of the cavity 111. Above, it diverge from the opening 110.

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Abstract

La présente invention concerne une source de lumière à DEL (10), une barre de lumière (1) et un dispositif d'affichage. La source de lumière à DEL (10) comprend un support (11), une puce de lumière bleue (12), et une partie de conversion de longueur d'onde (13) ; le support (11) a une cavité de réception (111) ayant une ouverture tournée vers le haut ; la puce de lumière bleue (12) est disposée au fond de la cavité de réception (111) ; la partie de conversion de longueur d'onde (13) recouvre la puce de lumière bleue (12) ; et la partie de conversion de longueur d'onde (13) comprend un point quantique rouge (131), un agent de blocage (133), et une poudre fluorescente verte (132). Au moyen de la présente invention, les quantités du point quantique rouge (131) et de la poudre fluorescente verte (132) sont réduites, et le coût de production du dispositif d'affichage est réduit.
PCT/CN2017/109345 2017-04-19 2017-11-03 Source de lumière à del, barre de lumière et dispositif d'affichage WO2018192208A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720417456.7 2017-04-19
CN201720417456.7U CN206741157U (zh) 2017-04-19 2017-04-19 Led灯源、灯条及显示装置

Publications (1)

Publication Number Publication Date
WO2018192208A1 true WO2018192208A1 (fr) 2018-10-25

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WO (1) WO2018192208A1 (fr)

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CN108153056A (zh) * 2018-01-12 2018-06-12 安徽芯瑞达科技股份有限公司 一种高色域直下式背光模组及其制作方法
CN108365077B (zh) * 2018-02-09 2019-08-02 深圳市鹏信捷通科技有限公司 一种高色域背光模组
US11428988B2 (en) * 2018-08-31 2022-08-30 Nanosys, Inc. Increasing color gamut performance and efficiency in quantum dot color conversion layers
CN109143682A (zh) * 2018-09-26 2019-01-04 上海中航光电子有限公司 背光模组和显示装置

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