WO2018192228A1 - Led灯源、灯条及显示装置 - Google Patents

Led灯源、灯条及显示装置 Download PDF

Info

Publication number
WO2018192228A1
WO2018192228A1 PCT/CN2017/113836 CN2017113836W WO2018192228A1 WO 2018192228 A1 WO2018192228 A1 WO 2018192228A1 CN 2017113836 W CN2017113836 W CN 2017113836W WO 2018192228 A1 WO2018192228 A1 WO 2018192228A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
light
led light
quantum dot
disposed
Prior art date
Application number
PCT/CN2017/113836
Other languages
English (en)
French (fr)
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 WO2018192228A1 publication Critical patent/WO2018192228A1/zh

Links

Classifications

    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F2202/36—Micro- or nanomaterials

Definitions

  • the invention 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.
  • the conventional method is to use a glass tube to encapsulate the quantum dots on the outside of the LED. This method is complicated in application and easy to be broken during the installation process, so that the quantum dots are applied. The cost of LED display is higher.
  • the main object of the present invention is to provide an LED light source, which is intended to be applied to a light bar or a display device, which can provide white light with a wider color gamut for a light bar or a display device, and reduce the cost of the light bar or display device.
  • the present invention provides an LED light source, a light bar and a display device.
  • the light bar includes the LED light source;
  • the display device includes the LED light source;
  • the LED light source includes:
  • bracket having a cavity with an opening facing upward
  • a blue chip disposed at a bottom of the cavity for emitting blue light
  • the wavelength conversion portion is filled in the cavity and encloses the blue chip, and the wavelength conversion portion is provided with a green light quantum dot material, a barrier agent, and a red phosphor.
  • the green light quantum dot material and the red light phosphor are arranged in a staggered manner on the wavelength conversion portion.
  • the wavelength conversion portion has an inner layer disposed adjacent to the blue chip, and an outer layer away from the blue chip, wherein one of the green light quantum dot material and the red light phosphor is disposed therein One layer is disposed on the outer layer.
  • the green light quantum dot material is disposed on the inner layer and encloses the blue chip; the red phosphor is disposed on the outer layer, and the barrier agent is disposed to surround the green light quantum dot material.
  • the red phosphor is disposed on the inner layer and encloses the blue chip; the green light quantum dot material is disposed on the outer layer, and the barrier agent surrounds the green light quantum dot material.
  • the ratio of the thickness of the layer in which the red phosphor is located to the thickness of the layer in which the green quantum dot material is located is in the range of [0.25, 0.33].
  • the green light quantum dots have a diameter of 1 to 10 nm.
  • the side wall of the bracket is arranged to be gradually enlarged from the bottom wall thereof.
  • the LED light source of the present invention is configured to fill the cavity of the holder by the wavelength conversion portion, and the wavelength conversion portion encloses the blue chip to set the blue light when the LED light source is operated
  • the chip emits blue light, and when the blue light passes through the wavelength conversion portion, part of the blue light excites the green light quantum dot to emit green light, and some of the blue light excites the red light phosphor to emit red light, and the remaining part of the blue light and the light
  • the green light and the red light are mixed to obtain white light, and the white light obtained by mixing the blue light, the green light and the red light has a wider color gamut, so that when the white light is diverged to the display screen of the display device, the white light can be obtained. Rich colors.
  • the wavelength conversion portion is disposed outside the LED light source and covers the entire LED light source, and the LED light source of the present invention sets the wavelength conversion portion to In the cavity of the bracket, only the blue chip is covered, so that the LED light source emits white light having a wider color gamut, and since the wavelength conversion portion is protected by the bracket, the LED light can be avoided.
  • the other structure of the source circumferential direction (such as a lens, a diffusion plate or a light guide plate, etc.) is damaged by extrusion, and the amount of use of the green light quantum dot material by the wavelength conversion portion can be reduced, thereby reducing the wavelength conversion portion.
  • the cost of consumables which in turn reduces the cost of the light strips and display devices on which the LED light source is mounted.
  • FIG. 1 is a schematic structural view of a first embodiment of an LED light source of the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of an LED light source of the present invention.
  • FIG. 3 is a schematic structural view of a third embodiment of an LED light source of the present invention.
  • FIG. 4 is a schematic structural view of an embodiment of a direct type backlight module of the present invention.
  • FIG. 5 is a schematic structural view of an embodiment of a side-lit backlight module of the present invention.
  • the directional indication is only used to explain in a certain posture (as shown in the drawing)
  • the relative positional relationship between the components, the motion situation, and the like if the specific posture changes, the directional indication also changes accordingly.
  • the invention provides an LED light source, a light bar and a display device, which can provide white light with a wider color gamut for a light bar or a display device, and reduce the cost of the wave light bar or the display device.
  • the display device may be any one of a liquid crystal display, a mobile phone, a tablet, or a computer display product.
  • the light bar can be applied to the liquid crystal display, as described in detail later.
  • the LED light source 100 of the present invention includes a bracket 110, a blue chip 120, and a wavelength conversion portion 130.
  • the bracket 110 has a cavity with a side wall opening upward, and the blue chip 120 is disposed on the air.
  • the wavelength conversion portion 130 is filled in the cavity and encloses the blue chip 120.
  • the wavelength conversion portion 130 is provided with a green light quantum dot 131, a barrier agent 140, and a red phosphor 132.
  • the bracket 110 has a bottom wall and a side wall extending upward from a peripheral edge of the bottom wall, the bottom wall and the side wall enclosing the cavity; the blue chip 120 is disposed on the bottom wall
  • the light-emitting portion 130 is filled in the cavity and encloses the blue chip 120, so that the wavelength conversion portion 130 is protected from damage by the support 110, and the material is avoided. Loss, wherein the green light quantum dot 131 is used to convert part of the blue light into green light; the red light fluorescent powder 132 is used to convert part of the blue light into red light; and the blocking agent 140 is used to encapsulate the green light quantum dot 131 In the cavity, it will be described in detail later.
  • the green light quantum dot 131 emits a green light having a peak wavelength between 500 and 560 nm
  • the green light quantum dot 131 may be a first compound composed of a group II-VI element, such as GaP, GaAs, InN, InP, and InAs;
  • a second compound composed of a group II-VI element such as CdSe, CdTe, MgS, MgSe, MgTe, CaS, CaSe, CaTe, SrS, SrSe, SrTe, BaS, BaSe, BaTe, ZnS, ZnSe, ZnTe, and CdS, CdS
  • the material of the barrier agent 140 may be SiO2, TiO2, Al2O3, CaCO3, BaSO4, polymethyl methacrylate.
  • PMMA polystyrene PS, acrylonitrile-butadiene-styrene copolymer ABS, polyurethane PU, and silicone polymer are not specifically limited.
  • the LED light source 100 of the present invention fills the cavity of the holder 110 by the wavelength conversion portion 130, and the wavelength conversion portion 130 is wrapped around the blue chip 120 to emit blue light when the LED light source 100 is operated.
  • the blue light passes through the wavelength conversion portion 130, part of the blue light excitation green light quantum dot 131 emits green light, part of the blue light excitation red light fluorescent powder 132 emits red light, and the remaining part of the blue light and the green light and the red light (hereinafter referred to as three-color light) is mixed to obtain white light, and white light obtained by mixing the above-described three-color light has a wide color gamut, so that when the white light is diverged to the display screen of the display device, a rich color can be obtained.
  • the wavelength conversion unit 130 is disposed outside the LED light source 100 and covers the entire LED light source 100.
  • the LED light source 100 of the present invention sets the wavelength conversion portion 130 to the bracket.
  • the other structures (such as a lens, a diffusion plate, or a light guide plate, etc.) are damaged by extrusion, and thus the wavelength conversion portion 130 can reduce the amount of use of the green light quantum dots 131 and the red phosphors 132, thereby reducing the wavelength.
  • the consumable cost of the conversion unit further reduces the cost of the light bar and display device on which the LED light source 100 is mounted.
  • the above principle of mixing by three colors of light to obtain white light is the principle of the three primary colors of color light well known in physics.
  • the half-wave width of the green light quantum dot 131 and the red light fluorescent powder 132 is narrow, and the peak wavelength band can be moved with the change of the size, and the green light and the red light fluorescent light emitted by the green light quantum dot 131 can be obtained by an appropriate ratio.
  • the red light emitted by the powder 132 and the blue light emitted by the blue chip 120 are mixed into white light having a wider color gamut, which are not specifically described in detail. It should be noted that the ratio should be determined according to the brightness, color point and other factors required for actual production.
  • the bracket 110 is disposed in a tapered shape from the bottom wall thereof. Specifically, the side wall of the bracket 110 is disposed to be tapered from the peripheral edge of the bottom wall.
  • the blue light emitted by the blue chip 120 is diverged to the sidewall of the bracket 110, directly reflected or reflected by the sidewall to the wavelength conversion portion 130 for light mixing, and finally concentrated in the cavity. On the opening, it diverge from the opening of the cavity.
  • the green light quantum dots 131 and the red light phosphors 132 are disposed in the wavelength conversion portion 130 in various ways, and may be layered or staggered.
  • the wavelength conversion portion 130 has an inner layer disposed adjacent to the blue chip 120, and an outer layer away from the blue chip 120, the green light quantum dot 131 and the red light.
  • One of the phosphors 132 is provided on the inner layer, and the other is provided on the outer layer.
  • the ratio of the thickness of the layer in which the red phosphor 132 is located to the thickness of the layer in which the green quantum dot 131 is located ranges from [0.25, 0.33], such as 0.25 (ie 1/4), 0.28 (ie 1/3.5), 0.3 or 0.33 (ie 1/3). That is, in the case where the thickness of the wavelength converting portion 130 is constant, by adjusting the thickness of the layer where the green light quantum dot 131 is located and the thickness of the layer where the red fluorescent powder 132 is located, the thickness of the layer where the green light quantum dot 131 is located is greater than or equal to red light.
  • the thickness of the layer where the phosphor 132 is located is such that the mass of the red phosphor 132 and the thickness of the green quantum dot 131 increase in proportion with the mass, which is advantageous for increasing the luminous efficiency of the green quantum dot 131 and increasing the blue light at the green quantum dot 131.
  • the light mixing distance of the layers makes the light mixing more complete.
  • a green light quantum dot 131 is disposed on the inner layer and encases the blue chip 120; a red phosphor 132 is disposed on the outer layer, and the barrier agent 140 wraps the green The photo quantum dot material 131 is disposed.
  • the blue light emitted by the blue chip 120, a portion of the blue light first passes through the inner layer and excites the green light quantum dot material 131 to emit green light, and then the green light and another portion of the blue light enter the outer layer from the inner layer, and Within the layer, the other portion of the blue-excited red phosphor 132 emits red light that mixes with green and blue light to form white light.
  • a barrier agent 140 is coated on the sidewall of the blue chip 120 and the sidewall of the inner layer, and the green quantum dot 131 is filled on the barrier agent 140 to encapsulate the green quantum dot 131;
  • the barrier agent 140 is again applied over the green light quantum dot 131 and the sidewall surface of the outer layer, and the red light phosphor 132 is filled on the barrier agent 140; and finally baked and shaped, thereby completing the fabrication of the LED light source 100.
  • the space sizes of the inner layer and the outer layer are inconsistent, the space size of the inner layer and the outer layer, and the green light quantum dot 131 and the red phosphor 132 are required.
  • the matching ratio accurately controls the filling amount of the red light phosphor 132 and the green light quantum dot 131 successively, otherwise, the purity of the white light emitted by the LED light source 100 is easily reduced.
  • the diameter of the green light quantum dot 132 is 1 to 10 nm, for example, 3 nm, 5 nm, 7 nm, or 10 nm, to ensure that the diameter of the green light quantum dot 131 is sufficiently large to facilitate packaging with the barrier agent 140 to avoid the green light quantum dot 131.
  • the package with the barrier agent 140 is not tight enough to cause the green light quantum dot 131 to be oxidized and damaged.
  • a red phosphor 132 is disposed on the inner layer and encloses the blue chip 120; a green light quantum dot 131 is disposed on the outer layer, and the barrier agent 140 wraps the green The photo quantum dots 131 are arranged.
  • the blue light emitted by the blue chip 120 a portion of the blue light firstly emits red light through the inner layer excitation red phosphor 132, and then red light and another portion of the blue light enter the outer layer from the inner layer, and in the outer layer
  • the other portion of the blue-excited green light quantum dot 131 emits green light, and the red light is mixed with green light and blue light to form white light.
  • the process of producing the LED light source 100 can be carried out by referring to the manufacturing process in the first embodiment described above, and details thereof will not be repeated.
  • red phosphor 132 and the green quantum dots 131 may be disposed in a layered arrangement.
  • the green light quantum dots 131 and the red phosphors 132 are provided in a staggered doping pattern in the wavelength conversion portion 130.
  • the green light quantum dot 131 and the red light phosphor 132 are evenly distributed on the wavelength conversion portion 130.
  • the LED light source 100 When the LED light source 100 is operated, the blue light emitted by the blue light chip 120 starts from the inner layer of the wavelength conversion portion 130.
  • the green light quantum dot 131 emits green light, and the excited green red fluorescent powder 132 emits red light.
  • the thickness of the entire wavelength conversion portion 130 is equivalent to the mixed light distance of the three color lights, so that the three color light mixing effect is better and more uniform.
  • the green light quantum dot 131 is first wrapped by the barrier agent 140, so that the outer surface of the green light quantum dot 131 is uniformly wrapped with a barrier agent 140, and the green light quantum dot 131 wrapped with the barrier agent 140 is red.
  • the light phosphors 131 are staggered and doped uniformly; then a mixture of green light quantum dots 131 and red phosphors 132 is filled in the cavity of the stent 110 and encapsulated with the blue chip 120; finally, the cavity is encapsulated by the barrier agent 140.
  • the inside is baked and shaped to complete the production of the LED light source 100.
  • the manufacturing process of the LED light source 100 is simpler and easier to operate; After the green light quantum dot 132 is separately wrapped, it can be uniformly mixed with the red fluorescent powder 131 and the glue according to the set ratio, and the ratio of the green light quantum dot 131 to the red fluorescent powder 132 can be easily controlled.
  • the display device of the present invention includes the LED light source 100.
  • the specific structure of the LED light source 100 is as described above. Since the light bar 200 adopts all the technical solutions of all the above embodiments, it has at least the technical solution of the above embodiment. All the benefits brought about will not be repeated here.
  • the application of the LED light source 100 in a display device will be described by taking a liquid crystal display as an example.
  • the aforementioned products such as a mobile phone, a tablet or a computer display can be referred to, but are not limited to the following embodiments.
  • the light bar 200 of the present invention is applied to a liquid crystal display device.
  • the light bar 200 includes a PCB board (not shown) and a plurality of LED light sources 100 mounted on the PCB board.
  • the liquid crystal display has two types: a direct type liquid crystal display and a side light input type liquid crystal display, wherein:
  • the direct type liquid crystal display includes a direct type backlight module 300, and the direct type backlight module includes a back plate (not shown), and is disposed on the front side of the back plate and arranged in the front-rear direction.
  • the first reflective sheet 310, the diffusing plate 320, and the first optical film set 330, the light bar 200 is pasted or screwed to the back plate by a thermal conductive adhesive, and each LED light source 100 of the light bar 200 is provided with a cover.
  • a lens that emits light (not shown).
  • the white light emitted by the LED light source 100 on the light bar 200 is reflected by the first reflective sheet 310 onto the diffusing plate 320 and diffused by the diffusing plate 320 onto the first optical film set 330.
  • the white light is processed by the first optical film set 330, a richer color is displayed on the display screen of the direct type liquid crystal display.
  • the wavelength conversion unit 130 is disposed in the holder 110 such that the wavelength conversion unit 130 wraps the blue chip 120 and is distributed in a dot shape.
  • the wavelength conversion unit 130 needs to be disposed in a diaphragm shape.
  • the LED lamp source 100 of the present invention the wavelength conversion portion 130 encloses the blue chip 120 and is arranged in a dot shape, and the number thereof is small, so that the use of the wavelength conversion portion 130 can be reduced.
  • the amount of material is used to reduce the consumable cost of the direct type backlight module 300.
  • the side-input optical liquid crystal display includes a side-into-light backlight module 400, and the side-into-light backlight module 400 includes a backplane (not shown) and is located at the front side of the backplane.
  • the second reflection sheet 410, the light guide plate 420 and the second optical film group 430 are disposed in the front-rear direction, and the light bar 200 is disposed on a side of the light guide plate 420 and disposed opposite to the side portion.
  • the side-lit backlight module 400 is in operation, the white light emitted from the LED light source 100 on the light bar 200 enters the light guide plate 420 from the side of the light guide plate 420 and is guided to the optical film set through the light guide plate 420.
  • the second optical film group 430 After the white light is processed by the second optical film group 430, a richer color is displayed on the display screen of the side-into-liquid crystal display.
  • the wavelength conversion portion 130 is disposed in the cavity of the bracket 110.
  • the wavelength conversion portion 130 needs to be disposed in a plurality of segments of the glass tube between the light bar 200 and the side of the light guide plate 420.
  • the wavelength conversion portion 130 is protected by the support 110 and can be prevented from being damaged by the light guide plate 420.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)

Abstract

一种LED灯源(100)、灯条(200)及显示装置，LED灯源(100)包括支架(110)、蓝光芯片(120)及波长转换部(130)。其中，支架(110)具有一开口朝上的空腔；蓝光芯片(120)设于空腔的底部，用以发出蓝光；波长转换部(130)填充于空腔并包裹蓝光芯片(120)，波长转换部(130)设有绿光量子点(131)、阻隔剂(140)及红光荧光粉(132)。LED灯源(100)用以发出具有较宽色域的白光，其成本较低。

Description

LED灯源、灯条及显示装置
技术领域
本发明涉及LED显示领域，特别涉及一种LED灯源、灯条及显示装置。
背景技术
目前，市场上的LED灯源以其轻薄、低能耗等优点，被广泛应用于灯条及显示装置中。常规的LED灯源包括蓝光芯片，蓝光芯片工作时发出蓝光，该蓝光需要通过设置在LED灯源外侧的波长转换部转化成白光，并供给灯条或者显示装置。在将宽色域量子点结合LED应用于背光或显示领域时，常规方式是采用玻璃管封装量子点置于LED外部，该种方式应用复杂，且安装过程中容易破碎，如此使得量子点应用于LED显示的成本较高。
发明内容
本发明的主要目的是提出一种LED灯源，旨在应用于灯条或显示装置中，能够为灯条或显示装置提供具有较宽色域的白光，降低灯条或显示装置的成本。
为到达上述之技术目的，本发明提供一种LED灯源、灯条及显示装置。所述灯条包括所述所述LED灯源；所述显示装置包括所述LED灯源；所述LED灯源包括：
支架，所述支架具有一开口朝上的空腔；
蓝光芯片，设于所述空腔的底部，用以发出蓝光；
波长转换部，填充于所述空腔并包裹所述蓝光芯片，所述波长转换部设有绿光量子点材料、阻隔剂及红光荧光粉。
优选地，所述绿光量子点材料与所述红光荧光粉呈交错掺杂状设于所述波长转换部上。
优选地，所述波长转换部具有邻近所述蓝光芯片设置的内层，以及远离所述蓝光芯片的外层，所述绿光量子点材料与所述红光荧光粉其中之一设于所述内层，另一设于所述外层。
优选地，所述绿光量子点材料设于所述内层并包裹所述蓝光芯片；所述红光荧光粉设于所述外层，所述阻隔剂包裹绿光量子点材料设置。
优选地，所述红光荧光粉设于所述内层并包裹所述蓝光芯片；所述绿光量子点材料设于所述外层，所述阻隔剂包裹所述绿光量子点材料设置。
优选地，所述红光荧光粉所在层的厚度与所述绿光量子点材料所在层的厚度的比值范围为[0.25,0.33]。
优选地，所述绿光量子点的直径为1~10nm。
优选地，所述支架侧壁自其底壁往上呈渐扩状设置。
本发明的LED灯源，通过将所述波长转换部填充于所述支架的空腔内，且所述波长转换部包裹所述蓝光芯片设置，以在所述LED灯源工作时，所述蓝光芯片发出蓝光，所述蓝光经过所述波长转换部时，部分所述蓝光激发所述绿光量子点发出绿光，部分所述蓝光激发所述红光荧光粉发出红光，余下部分的蓝光与所述绿光、红光混合而获得白光，通过上述蓝光、绿光及红光混合而得到的白光具有较宽的色域，从而当所述白光发散到显示装置的显示屏上时，能够获得较为丰富的色彩。由此可见，相较于现有技术中，将所述波长转换部设置于所述LED灯源的外侧并覆盖整个LED灯源而言，本发明的LED灯源将所述波长转换部设置于支架的空腔内，只需覆盖所述蓝光芯片，即可使得所述LED灯源发散出具有较宽色域的白光，且由于所述波长转换部受支架的保护，可避免受到位于LED灯源周向的其他结构（如透镜、扩散板或者导光板等）的挤压而损坏，且可减小所述波长转换部耗用绿光量子点材料的使用量，从而降低所述波长转换部的耗材成本，进而降低安装有LED灯源的灯条及显示装置的成本。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明的LED灯源的第一实施例的结构示意图；
图2为本发明的LED灯源的第二实施例的结构示意图；
图3为本发明的LED灯源的第三实施例的结构示意图；
图4为本发明的直下式背光模组的一实施例的结构示意图；
图5为本发明的侧入光式背光模组的一实施例的结构示意图。
本发明附图标号说明：
标号 名称 标号 名称
100 LED灯源 300 直下式背光模组
110 支架 310 第一反射片
120 蓝光芯片 320 扩散板
130 波长转换部 330 第一光学膜片组
131 绿光量子点 400 侧入光式背光模组
132 红光荧光粉 410 第二反射片
140 阻隔剂 420 导光板
200 灯条 430 第二光学膜片组
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提供一种LED灯源、灯条及显示装置，所述LED灯源能够为灯条或显示装置提供具有较宽色域的白光，降低波灯条或显示装置的成本。所述显示装置可以是液晶显示器、手机、平板或者电脑显示器产品中的任意一种。所述灯条可应用于所述液晶显示器中，具体在后文中有详细介绍。
请参阅图1至图3，本发明的LED灯源100包括支架110、蓝光芯片120，以及波长转换部130；支架110具有一侧壁开口朝上的空腔，蓝光芯片120设于所述空腔的底部，波长转换部130填充于所述空腔内并包裹蓝光芯片120，所述波长转换部130设有绿光量子点131、阻隔剂140及红光荧光粉132。
具体地，支架110具有一底壁，及自所述底壁的周缘朝上延伸出的侧壁，所述底壁与侧壁围合形成所述空腔；蓝光芯片120设于所述底壁上，用以在LED灯源100工作时发出蓝光；波长转换部130填充于所述空腔内并包裹所述蓝光芯片120，使得波长转换部130受支架110的保护而不易受到损坏，避免材料耗损，其中，绿光量子点131用以将部分所述蓝光转换成绿光；红光荧光粉132用以将部分所述蓝光转换成红光；阻隔剂140用以将所述绿光量子点131封装于所述空腔内，具体在后文中有详细介绍。
值得说明的是，绿光量子点131发出的绿光峰值波长在500~560nm之间，绿光量子点131可以为Ⅱ—Ⅵ族元素组成的第一化合物，例如GaP、GaAs、InN、InP和InAs；或者Ⅱ—Ⅵ族元素组成的第二化合物，例如CdSe、CdTe、MgS、MgSe、MgTe、CaS、CaSe、CaTe、SrS、SrSe、SrTe、BaS、BaSe、BaTe、ZnS、ZnSe、ZnTe和CdS，CdS；再或者第三化合物，如杂化钙钛矿(CH3NH3PbX3, X = Cl，Br，I)材料；亦或者第四化合物，如无机钙钛矿铯铅卤量子点（CsPbX3，X=Cl，Br，I）；又或者上述的第一化合物、第二化合物、第三化合物及第四化合物中的多种包覆形成的核壳结构化合物或者掺杂纳米晶。阻隔剂140的材料可以为SiO2、TiO2、Al2O3、CaCO3、BaSO4、聚甲基丙烯酸甲酯 PMMA、聚苯乙烯PS、烯腈-丁二烯- 苯乙烯共聚物 ABS、聚氨酯PU、有机硅聚合物中的一种或多种，不设具体限定。
本发明的LED灯源100，通过将波长转换部130填充于支架110的空腔内，且波长转换部130包裹蓝光芯片120设置，以在LED灯源100工作时，蓝光芯片120发出蓝光，所述蓝光经过波长转换部130时，部分所述蓝光激发绿光量子点131发出绿光，部分所述蓝光激发红光荧光粉132发出红光，余下部分的蓝光与所述绿光、红光三者（以下简称为三色光）混合而获得白光，通过上述三色光混合而得到的白光具有较宽的色域，从而当所述白光发散到显示装置的显示屏上时，能够获得较为丰富的色彩。由此可见，相较于现有技术中，将波长转换部130设置于LED灯源100的外侧并覆盖整个LED灯源100而言，本发明的LED灯源100将波长转换部130设置于支架110的空腔内，只需覆盖蓝光芯片120，即可使得LED灯源100发散出具有较宽色域的白光，且由于波长转换部130受支架110的保护，可避免受到位于LED灯源周向的其他结构（如透镜、扩散板或者导光板等）的挤压而损坏，如此则且可减小波长转换部130耗用绿光量子点131及红光荧光粉132的使用量，从而降低波长转换部的耗材成本，进而降低安装有LED灯源100的灯条及显示装置的成本。
上述通过三色光混合以获得白光的原理，为物理学中熟知的色光三原色原理。绿光量子点131与红光荧光粉132的半波宽较窄，其峰值波段可随尺寸的变化而移动，通过适量的配比，即可使绿光量子点131所发出的绿光与红光荧光粉132所发出的红光，及蓝光芯片120发出的蓝光混合成具有较宽色域的白光，具体不一一详述。要注意的是，所述配比应依据实际生产时所需的亮度、色点等要素来确定。
进一步地，支架110自其底壁往上呈渐扩状设置。具体地，支架110的侧壁自所述底壁的周缘朝上呈渐扩状设置。当LED灯源100工作时，蓝光芯片120发出的蓝光，发散到支架110的侧壁上，直射或经所述侧壁反射到波长转换部130上进行混光，并最终汇聚于所述空腔的开口上，自所述空腔的开口发散出去。
绿光量子点131与红光荧光粉132在波长转换部130中的设置方式有多种，可以分层设置，或交错掺杂设置。
其中，若绿光量子点131与红光荧光粉132分层设置，则波长转换部130具有邻近蓝光芯片120设置的内层，以及远离蓝光芯片120的外层，绿光量子点131与所述红光荧光粉132其中之一设于所述内层，另一设于所述外层。
优选地，红光荧光粉132所在层的厚度与绿光量子点131所在层的厚度的比值范围为[0.25,0.33]，例如0.25（即1/4）、0.28（即1/3.5）、0.3或者0.33（即1/3）。即是在波长转换部130的厚度不变的情况下，通过调整绿光量子点131所在层的厚度及红光荧光粉132所在层的厚度，使得绿光量子点131所在层的厚度大于或等于红光荧光粉132所在层的厚度，以此使得红光荧光粉132的质量及绿光量子点131厚度随质量成正比增加，有利于提高绿光量子点131的发光效率，并增加蓝光在绿光量子点131所在层的混光距离，使得混光更充分。
请参阅图1，在本发明的第一实施例中，绿光量子点131设于所述内层并包裹所述蓝光芯片120；红光荧光粉132设于所述外层，阻隔剂140包裹绿光量子点材料131设置。蓝光芯片120发出的蓝光，部分蓝光首先通过所述内层并激发绿光量子点材料131发出绿色光，然后该绿色光与另一部分蓝光自所述内层进入所述外层，并在所述外层内，该另一部分蓝光激发红光荧光粉132发出红光，所述红光与绿光及蓝光混合而形成白光。
制作LED灯源100时：首先在蓝光芯片120上方及所述内层的侧壁面涂覆阻隔剂140，并在阻隔剂140上填充绿光量子点131，以此对绿光量子点131进行封装；接着在绿光量子点131的上方及所述外层的侧壁面再次涂覆阻隔剂140，并在该阻隔剂140上填充红光荧光粉132；最后烘烤定型，从而完成LED灯源100的制作。需要注意的是，在分层设置的过程中，由于所述内层与外层的空间大小不一致，需要依据所述内层与外层的空间大小，以及绿光量子点131及红光荧光粉132的配比，精准控制红光荧光粉132及绿光量子点131先后加入的填充量，否则，容易降低LED灯源100发出的白光的纯度。
进一步地，绿光量子点132的直径为1~10nm，例如3nm、5nm、7nm，亦或者是10nm，以确保绿光量子点131的直径足够大，可便于与阻隔剂140封装，避免绿光量子点131与阻隔剂140封装不严密而导致绿光量子点131被氧化而损坏。
请参阅图2，在本发明的第二实施例中：红光荧光粉132设于所述内层并包裹蓝光芯片120；绿光量子点131设于所述外层，所述阻隔剂140包裹绿光量子点131设置。蓝光芯片120发出的蓝光，部分蓝光首先通过所述内层激发红光荧光粉132发出红光，然后红光与另一部分蓝光自所述内层进入所述外层，并在所述外层内，该另一部分蓝光激发绿光量子点131发出绿光，所述红光与绿光及蓝光混合而形成白光。
制作LED灯源100的工序，可参照上述第一实施例中的制作工序进行，具体不再一一赘述。
另外，红光荧光粉132与绿光量子点131分层设置还可以呈交错掺杂状设置。
请参阅图3，在本发明的第三实施例中，绿光量子点131与红光荧光粉132呈交错掺杂状设于波长转换部130。如此设置，使得绿光量子点131与红光荧光粉132在波长转换部130上均匀分布，当LED灯源100工作时，蓝光芯片120发出的蓝光，自波长转换部130的内层开始，即可同时激发绿光量子点131发出绿光、激发绿红光荧光粉132发出红光，整个波长转换部130的厚度即相当于三色光的混光距离，使得三色光混光效果更好更均匀。
制作LED灯源100时，首先利用阻隔剂140包裹绿光量子点131，使得绿光量子点131的外表面均匀包裹一层阻隔剂140，再将该包裹有阻隔剂140的绿光量子点131，与红光荧光粉131交错掺杂混合均匀；然后将绿光量子点131及红光荧光粉132的混合物填充于支架110的空腔内，并包裹蓝光芯片120；最后通过阻隔剂140封装于所述空腔内，并烘烤定型，从而完成LED灯源100的制作。
对比本发明的第一及第二较佳实施例，显然，在制作工序上，本发明的第三实施例中，LED灯源100的制作工序更为简洁，易于操作；在混合配比控制上，只需将绿光量子点132单独包裹后，与红光荧光粉131及胶水按设定的配比混合均匀即可，易于控制绿光量子点131与红光荧光粉132的配比。
本发明的显示装置，包括LED灯源100，LED灯源100的具体结构参照上述实施例，由于本灯条200采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。以下均以液晶显示器为例，说明LED灯源100在显示装置中的应用，前述的手机、平板或者电脑显示器等产品可参照但并不局限于以下的实施例。
请参阅图4和图5，本发明的灯条200，应用于液晶显示装置上，灯条200包括PCB板（未图示）以及安装于所述PCB板上的多个LED灯源100。
所述液晶显示器有直下式液晶显示器及侧入光式液晶显示器两种，其中：
如图4所示，所述直下式液晶显示器包括直下式背光模组300，所述直下式背光模组包括背板（未图示），以及位于所述背板前侧并呈前后向依次设置的第一反射片310、扩散板320及第一光学膜片组330，灯条200通过导热胶粘贴或螺丝固定于所述背板上，灯条200的各LED灯源100上均罩设有用以发散光线的透镜（未图示）。直下式背光模组300工作时，灯条200上的LED灯源100发出的白光，经第一反射片310反射到扩散板320上，并由扩散板320扩散至第一光学膜片组330上，所述白光经第一光学膜片组330处理后，在所述直下式液晶显示器的显示屏上显示出更为丰富的色彩。
在本实施例中，波长转换部130设置于支架110内，使得波长转换部130包裹蓝光芯片120而呈点状分布，相对于现有技术中，将波长转换部130需要设置成膜片状，以封装在光学膜片组中而言，显然，本发明的LED灯源100，波长转换部130包裹蓝光芯片120而呈点状设置，其数量较少，因而可减少波长转换部130所使用的材料量，以降低直下式背光模组300的耗材成本。
如图5所示，所述侧入光式液晶显示器包括侧入光式背光模组400，所述侧入光式背光模组400包括背板（未图示），以及位于所述背板前侧并呈前后向依次设置的第二反射片410、导光板420及第二光学膜片组430，灯条200设于导光板420的侧部，并与该侧部相对设置。侧入光式背光模组400工作时，灯条200上的LED灯源100发出的白光，自导光板420的侧部进入导光板420，经导光板420引导至光学膜片组上，所述白光经第二光学膜片组430处理后，在所述侧入光式液晶显示器的显示屏上显示出更为丰富的色彩。
在本实施例中，波长转换部130设置于支架110的空腔内，相对现有技术中，波长转换部130需要呈多段玻璃管拼接状设于灯条200与导光板420的侧部之间而言，本发明的LED灯源100，波长转换部130受支架110的保护，可避免受到导光板420的挤压而损坏。
以上仅为本发明的优选实施例，并非因此限制其专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围。

Claims (20)

  1. 一种LED灯源，其特征在于，包括：
    支架，所述支架具有一开口朝上的空腔；
    蓝光芯片，设于所述空腔的底部，用以发出蓝光；
    波长转换部，填充于所述空腔并包裹所述蓝光芯片，所述波长转换部设有绿光量子点、阻隔剂及红光荧光粉。
  2. 如权利要求1所述的LED灯源，其特征在于，所述绿光量子点与所述红光荧光粉呈交错掺杂状设于所述波长转换部上。
  3. 如权利要求2所述的LED灯源，其特征在于，所述绿光量子点与红光荧光粉在所述波长转换部上均匀分布。
  4. 如权利要求1所述的LED灯源，其特征在于，所述波长转换部具有邻近所述蓝光芯片设置的内层，以及远离所述蓝光芯片的外层，所述绿光量子点与所述红光荧光粉其中之一设于所述内层，另一设于所述外层。
  5. 如权利要求4所述的LED灯源，其特征在于，所述绿光量子点设于所述外层并包裹所述蓝光芯片；所述红光荧光粉设于所述内层，所述阻隔剂包裹绿光量子点设置。
  6. 如权利要求4所述的LED灯源，其特征在于，所述红光荧光粉设于所述内层并包裹所述蓝光芯片；所述绿光量子点设于所述外层，所述阻隔剂包裹所述绿光量子点设置。
  7. 如权利要求4所述的LED灯源，所述红光荧光粉所在层的厚度与所述绿光量子点所在层的厚度的比值范围为[0.25,0.33]。
  8. 如权利要求5所述的LED灯源，其特征在于，所述红光荧光粉所在层的厚度与所述绿光量子点所在层的厚度的比值范围为[0.25,0.33]
  9. 如权利要求6所述的LED灯源，其特征在于，所述红光荧光粉所在层的厚度与所述绿光量子点所在层的厚度的比值范围为[0.25,0.33]。
  10. 如权利要求1所述的LED灯源，其特征在于，所述绿光量子点的直径为1~10nm。
  11. 如权利要求1所述的LED灯源，其特征在于，所述支架侧壁自其底壁往上呈渐扩状设置。
  12. 如权利要求1所述的LED灯源，其特征在于，所述支架具有一底壁，及自所述底壁的周缘朝上延伸出的侧壁，所述底壁与侧壁围合形成所述空腔，所述蓝光芯片设于所述底壁上。
  13. 如权利要求1所述的LED灯源，其特征在于，所述绿光量子点为Ⅱ—Ⅵ族元素组成的第一化合物，或者由Ⅱ—Ⅵ族元素组成的第二化合物。
  14. 一种灯条，其特征在于，包括LED灯源，所述LED灯源包括：
    支架，所述支架具有一开口朝上的空腔；
    蓝光芯片，设于所述空腔的底部，用以发出蓝光；
    波长转换部，填充于所述空腔并包裹所述蓝光芯片，所述波长转换部设有绿光量子点、阻隔剂及红光荧光粉。
  15. 一种显示装置，其特征在于，包括LED灯源，所述LED灯源包括：
    支架，所述支架具有一开口朝上的空腔；
    蓝光芯片，设于所述空腔的底部，用以发出蓝光；
    波长转换部，填充于所述空腔并包裹所述蓝光芯片，所述波长转换部设有绿光量子点、阻隔剂及红光荧光粉。
  16. 如权利要求15所述的显示装置，其特征在于，所述显示装置包括灯条，所述包括灯条PCB板，多个所述LED灯源安装于所述PCB板上。
  17. 如权利要求16所述的显示装置，其特征在于，所述显示装置为直下式液晶显示器。
  18. 如权利要求17所述的显示装置，其特征在于，所述直下式液晶显示器包括直下式背光模组，所述直下式背光模组包括背板、灯条，以及位于所述背板前侧并呈前后向依次设置的第一反射片、扩散板及第一光学膜片组，所述灯条固定于所述背板上。
  19. 如权利要求16所述的显示装置，其特征在于，所述显示装置为侧入光式液晶显示器。
  20. 如权利要求19所述的显示装置，其特征在于，所述侧入光式液晶显示器包括侧入光式背光模组，所述侧入光式背光模组包括背板、灯条，以及位于所述背板前侧并呈前后向依次设置的第二反射片、导光板及第二光学膜片组，所述灯条设于导光板的侧部，并与该侧部相对设置。
PCT/CN2017/113836 2017-04-19 2017-11-30 Led灯源、灯条及显示装置 WO2018192228A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720423807.5 2017-04-19
CN201720423807.5U CN206741158U (zh) 2017-04-19 2017-04-19 Led灯源、灯条及显示装置

Publications (1)

Publication Number Publication Date
WO2018192228A1 true WO2018192228A1 (zh) 2018-10-25

Family

ID=60561732

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/113836 WO2018192228A1 (zh) 2017-04-19 2017-11-30 Led灯源、灯条及显示装置

Country Status (2)

Country Link
CN (1) CN206741158U (zh)
WO (1) WO2018192228A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220252932A1 (en) * 2021-02-08 2022-08-11 Lg Electronics Inc. Display device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108549175A (zh) * 2018-04-13 2018-09-18 青岛海信电器股份有限公司 一种量子点发光装置、量子点背光模组、液晶显示装置
CN109270728B (zh) * 2018-11-30 2024-02-02 娄底市金鑫电子科技有限公司 基于量子彩光技术的北斗卫星导航高精密智能触摸一体机
CN109919103A (zh) * 2019-03-11 2019-06-21 深圳阜时科技有限公司 生物特征检测模组和背光模组及电子装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050218780A1 (en) * 2002-09-09 2005-10-06 Hsing Chen Method for manufacturing a triple wavelengths white LED
CN101492602A (zh) * 2009-02-16 2009-07-29 江苏苏博特新材料股份有限公司 用于白光发光装置中的混合荧光粉及采用该混合荧光粉的白光发光装置
CN203404682U (zh) * 2013-08-27 2014-01-22 深圳Tcl新技术有限公司 背光模组和液晶显示装置
CN103811628A (zh) * 2012-11-05 2014-05-21 江苏稳润光电有限公司 一种高显指白光led及其制作方法
CN104241507A (zh) * 2014-09-18 2014-12-24 晶科电子（广州）有限公司 广色域led发光器件及其背光组件
CN204102939U (zh) * 2014-09-18 2015-01-14 晶科电子（广州）有限公司 一种广色域led发光器件及其背光组件
CN104633551A (zh) * 2015-03-03 2015-05-20 深圳市华星光电技术有限公司 白光led、背光模块及液晶显示装置
CN106067509A (zh) * 2015-04-21 2016-11-02 夏普株式会社 发光装置和图像显示装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050218780A1 (en) * 2002-09-09 2005-10-06 Hsing Chen Method for manufacturing a triple wavelengths white LED
CN101492602A (zh) * 2009-02-16 2009-07-29 江苏苏博特新材料股份有限公司 用于白光发光装置中的混合荧光粉及采用该混合荧光粉的白光发光装置
CN103811628A (zh) * 2012-11-05 2014-05-21 江苏稳润光电有限公司 一种高显指白光led及其制作方法
CN203404682U (zh) * 2013-08-27 2014-01-22 深圳Tcl新技术有限公司 背光模组和液晶显示装置
CN104241507A (zh) * 2014-09-18 2014-12-24 晶科电子（广州）有限公司 广色域led发光器件及其背光组件
CN204102939U (zh) * 2014-09-18 2015-01-14 晶科电子（广州）有限公司 一种广色域led发光器件及其背光组件
CN104633551A (zh) * 2015-03-03 2015-05-20 深圳市华星光电技术有限公司 白光led、背光模块及液晶显示装置
CN106067509A (zh) * 2015-04-21 2016-11-02 夏普株式会社 发光装置和图像显示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220252932A1 (en) * 2021-02-08 2022-08-11 Lg Electronics Inc. Display device
US11693276B2 (en) * 2021-02-08 2023-07-04 Lg Electronics Inc. Display device

Also Published As

Publication number Publication date
CN206741158U (zh) 2017-12-12

Similar Documents

Publication Publication Date Title
WO2018192228A1 (zh) Led灯源、灯条及显示装置
US7834953B2 (en) Light unit, liquid crystal display having the same, and method of manufacturing the same
KR101460155B1 (ko) 백라이트 유닛 및 이를 구비한 액정 디스플레이 장치
US8564737B2 (en) LED backlight system for LCD displays
WO2018233199A1 (zh) Led、背光模组以及液晶显示装置
WO2012008692A2 (en) Display device
WO2012005489A2 (en) Display device
WO2016052856A1 (ko) 색변환용 기판, 그 제조방법 및 이를 포함하는 디스플레이 장치
WO2014117400A1 (zh) 背光模组及液晶显示装置
US20070103939A1 (en) Sectional light emitting diode backlight unit
WO2016054838A1 (zh) 直下式背光模组及其制造方法
TW201625479A (zh) 光學片、顯示裝置及具有其之發光裝置
WO2018188151A1 (zh) Led灯源及其制造方法、背光模组
WO2018233186A1 (zh) 背光模组及显示装置
US20170067604A1 (en) Quantum dot light-emitting device and display device
TW201312216A (zh) 光學構件、顯示裝置及具有其之發光裝置
WO2019071985A1 (zh) 背光模组及显示装置
KR20090021912A (ko) 백라이트 유닛 및 이를 구비한 액정표시장치
WO2018192208A1 (zh) Led灯源、灯条及显示装置
WO2020025054A1 (zh) 一种发光装置及其制备方法
CN101169556A (zh) 一种使用led光源的侧光式背光模组
WO2017206366A1 (zh) 背光模组和显示设备
WO2022001048A1 (zh) 灯珠、背光模组及显示装置
WO2019062237A1 (zh) 背光模组及显示装置
CN104360539B (zh) 一种背光模组及液晶显示器件

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17906146

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17906146

Country of ref document: EP

Kind code of ref document: A1