WO2021072853A1 - Led白光器件及背光模组 - Google Patents

Led白光器件及背光模组 Download PDF

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WO2021072853A1
WO2021072853A1 PCT/CN2019/117414 CN2019117414W WO2021072853A1 WO 2021072853 A1 WO2021072853 A1 WO 2021072853A1 CN 2019117414 W CN2019117414 W CN 2019117414W WO 2021072853 A1 WO2021072853 A1 WO 2021072853A1
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white light
conjugated structure
light device
led white
conjugated
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PCT/CN2019/117414
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English (en)
French (fr)
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查宝
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Tcl华星光电技术有限公司
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Publication of WO2021072853A1 publication Critical patent/WO2021072853A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
    • H01L33/502—Wavelength conversion materials
    • H01L33/504—Elements with 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

Definitions

  • This application relates to the technical field of display panels, and in particular to an LED white light device and a backlight module.
  • the wide color gamut means that the display device can display more colorful colors and has a stronger color display ability, which can effectively avoid distortion and color blocks during display. Due to the increase in the types of colors, the color switching in the display screen can be more natural, making the level of the screen more distinct, showing more details and closer to the real effect. For LED LCD TVs, because the screen itself does not have self-luminous properties, the improvement of the color gamut is mainly achieved through the three primary color film filters and backlight.
  • the way to improve the purity of the backlight is to use blue LEDs and red and green fluorescent materials, or use quantum dot QD backlight technology; however, although quantum dot QD backlight technology can greatly improve the color gamut, QD contains heavy metal elements, Poor thermal stability and high cost have always been important factors restricting its development; the biggest drawback of using blue LEDs and red and green fluorescent materials is that the final red, green and blue light is not pure; because it is in the process of increasing the color gamut The three primary colors of red, green and blue are not purified, and there are yellow-orange light and/or cyan light, so the three primary colors of red, green and blue are not pure.
  • the embodiments of the present application provide an LED white light device and a backlight module to solve the problem of impure red, green and blue primary colors and narrow color gamut in the existing display backlight.
  • the embodiment of the application provides an LED white light device, which includes a white light source and a purification film arranged on the white light source;
  • a first rhodamine-based dye for converting cyan light into green light and a second rhodamine-based dye for converting yellow-orange light into red light are uniformly distributed in the purification film.
  • the first rhodamine dye includes the rhodamine 6G derivative shown in the following chemical structure (1):
  • X — is selected from F — , Cl — , Br — , CN — , ClO 4 — , CF 3 SO 3 — , CF 2 HSO 3 — or CFH 2 SO 3 — ;
  • R 1 to R 4 are independently selected from -F, -Cl, -Br, -I or -CN, or a non-conjugated structure, or a conjugated structure connected by an alkoxy group or an ester group;
  • R 5 to R 6 are selected from non-conjugated structures, or conjugated structures connected by alkoxy groups or ester groups;
  • R 7 to R 10 are independently selected from -F, -Cl, -Br, -I or -CN, or a non-conjugated structure, or a conjugated structure connected through an alkoxy group or an ester group;
  • R 11 is selected from -F, -Cl, -Br, -I or -CN, or has a non-conjugated structure, or has a conjugated structure connected through an alkoxy group or an ester group, or has the following chemical structure (two );
  • R 18 is selected from a non-conjugated structure, or a conjugated structure connected through an alkoxy group or an ester group.
  • the conjugated structure in the chemical structure (1) has the following chemical structure (3):
  • R 12 is selected from oxygen-containing linking groups
  • R 13 to R 17 are independently selected from a non-conjugated structure, or a conjugated structure connected via an alkoxy group or an ester group.
  • the conjugated structure in the chemical structure (1) is independently selected from a five-membered heterocyclic compound, a six-membered heterocyclic compound or a benzoheterocyclic compound,
  • the five-membered heterocyclic compound is furan, thiophene, pyrrole, thiazole or imidazole
  • the six-membered heterocyclic compound is pyridine, pyrazine, pyrimidine, pyridazine, indole, quinoline, pteridine or acridine.
  • the second rhodamine dye includes the rhodamine 101 derivative represented by the following chemical structure (4):
  • X — is selected from F — , Cl — , Br — , CN — , ClO 4 — , CF 3 SO 3 — , CF 2 HSO 3 — or CFH 2 SO 3 — ;
  • R 19 to R 22 are independently selected from -F, -Cl, -Br, -I, -CN, -NH 2 , -COOH, -OH, -SH, -COCl, -COBr, -CN, -NO 2 ,- NH 2 , benzene or phenol ring, or non-conjugated structure, or conjugated structure connected by alkoxy group or ester group; and
  • R 23 is selected from a non-conjugated structure, or the following chemical structure (5):
  • R 30 is selected from a non-conjugated structure, or a conjugated structure connected through an alkoxy group or an ester group.
  • the conjugated structure in the chemical structure (4) has the following chemical structure (6):
  • R 24 is selected from an oxygen-containing linking group
  • R 25 to R 29 are independently selected from a non-conjugated structure, or a conjugated structure connected via an alkoxy group or an ester group.
  • the conjugated structure in the chemical structure (4) is independently selected from a five-membered heterocyclic compound, a six-membered heterocyclic compound or a benzoheterocyclic compound,
  • the five-membered heterocyclic compound is furan, thiophene, pyrrole, thiazole or imidazole
  • the six-membered heterocyclic compound is pyridine, pyrazine, pyrimidine, pyridazine, indole, quinoline, pteridine or acridine.
  • the material of the purification film is transparent resin or pressure sensitive adhesive, and the first rhodamine dye and the second rhodamine dye are uniformly distributed on the transparent resin or pressure sensitive adhesive.
  • the glue In the glue.
  • the white light source includes a blue chip and a yellow phosphor covering the blue chip.
  • the thickness of the purification film is 1-100 um.
  • the wavelength range of the cyan light converted by the first rhodamine dye is 480 nm to 510 nm.
  • the wavelength range of the yellow-orange light converted by the second rhodamine dye is 570nm ⁇ 610nm.
  • the first rhodamine dye accounts for 1% to 5% of the mass of the purified film.
  • the second rhodamine dye accounts for 1% to 5% of the mass of the purified film.
  • an embodiment of the present application also provides a backlight module including the aforementioned LED white light device.
  • the present application provides an LED white light device and a backlight module, including a white light source, and a purification film arranged on the white light source; the first part of the purification film is used to convert cyan light into green light.
  • the rhodamine dye and the second rhodamine dye for converting yellow-orange light into red light absorb and purify the cyan light and yellow-orange light in the white light source into red light and yellow light, which can not only improve the backlight
  • the color purity can also improve the utilization rate of the light source, and at the same time achieve the purpose of energy saving.
  • FIG. 1 is a schematic structural diagram of an LED white light device provided by an embodiment of the application.
  • Figure 2 is a schematic diagram of the mechanism of converting the backlight pure color
  • Fig. 3 is a flow chart of a method for manufacturing a white LED device provided by an embodiment of the application.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meanings of the above-mentioned terms in this application can be understood under specific circumstances.
  • an embodiment of the present application provides an LED white light device 1, which includes a white light source 100 and a purification film 200 disposed on the white light source 100;
  • a first rhodamine-based dye 210 for converting cyan light into green light and a second rhodamine-based dye 220 for converting yellow-orange light into red light are uniformly distributed in the purification film 200.
  • the white light source 100 in the present application can be any device currently used to generate white light on a panel.
  • the white light source 100 includes a blue chip 110 and a blue chip covered on it.
  • the yellow phosphor 120 on the 110; specifically, the white light source 100 may also include a base 130, and the blue chip 110 and the yellow phosphor 120 are both disposed in the base 130.
  • the corresponding part of the yellow phosphor 120 can also be replaced by a film layer containing the yellow phosphor 120, which is not limited here.
  • the thickness of the purification film 200 is 1-100um, so The material of the purification film 200 is transparent resin or pressure sensitive adhesive, and the first rhodamine dye 210 and the second rhodamine dye 220 are uniformly distributed in the transparent resin or pressure sensitive adhesive.
  • the purification film 200 has evenly distributed a first rhodamine dye 210 for converting cyan light into green light and a second rhodamine dye 220 for converting yellow orange light into red light, such as
  • the first rhodamine-based dye 210 and the second rhodamine-based dye 220 are structured in the form of particles in FIG. 1, but their specific existence in the purification membrane 200 The form is not limited to this.
  • the first rhodamine dye 210 absorbs the cyan light in the white light emitted by the white light source 100 and then converts it into green light to emit.
  • the white light emitted by the white light source 100 yellow-orange light is absorbed and then converted into red light to be emitted.
  • the wavelength range of the blue-green light absorbed at A may be 480-510nm; and absorbed at B
  • the wavelength range of the yellow-orange light may be 570-610 nm.
  • the first rhodamine dye 210 includes a rhodamine 6G derivative represented by the following chemical structure (1):
  • X — is selected from F — , Cl — , Br — , CN — , ClO 4 — , CF 3 SO 3 — , CF 2 HSO 3 — or CFH 2 SO 3 — ;
  • R 1 to R 4 are independently selected from -F, -Cl, -Br, -I or -CN, or a non-conjugated structure, or a conjugated structure connected by an alkoxy group or an ester group;
  • R 5 to R 6 are selected from non-conjugated structures, or conjugated structures connected by alkoxy groups or ester groups;
  • R 7 to R 10 are independently selected from -F, -Cl, -Br, -I or -CN, or a non-conjugated structure, or a conjugated structure connected through an alkoxy group or an ester group;
  • R 11 is selected from -F, -Cl, -Br, -I or -CN, or has a non-conjugated structure, or has a conjugated structure connected through an alkoxy group or an ester group, or has the following chemical structure (two );
  • R 18 is selected from a non-conjugated structure, or a conjugated structure connected through an alkoxy group or an ester group;
  • the conjugated structure may be a compound containing a heterocyclic ring, and the compound containing a heterocyclic ring may be a five-membered heterocyclic compound, a six-membered heterocyclic compound or a benzoheterocyclic compound, wherein the five-membered heterocyclic compound may be Furan, thiophene, pyrrole, thiazole or imidazole, the six-membered heterocyclic compound may be pyridine, pyrazine, pyrimidine, pyridazine, indole, quinoline, pteridine or acridine.
  • the non-conjugated structure can be linear alkanes, branched alkanes, linear or branched alkanes containing alkoxy groups, chains containing ester groups, fluorine-substituted alkane derivatives, in which carbon The chain length contains 1-25 carbon atoms.
  • the conjugated structure in the chemical structure (1) has the following chemical structure (3):
  • R 12 is selected from an oxygen-containing linking group
  • the oxygen-containing linking group may be an alkoxy group or an ester group, wherein the carbon chain length contains 1-25 carbon atoms
  • R 13 ⁇ R 17 are independently selected Self-non-conjugated structure, or conjugated structure connected by alkoxy or ester group.
  • the non-conjugated structure can be linear alkanes, branched alkanes, linear or branched alkanes containing alkoxy groups, chains containing ester groups, fluorine-substituted alkane derivatives, in which carbon The chain length contains 1-25 carbon atoms.
  • R 13 to R 17 may also contain a benzene ring or an unsaturated cyclic substance, or have a chain structure of different lengths connected thereto.
  • the second rhodamine dye 220 includes the rhodamine 101 derivative represented by the following chemical structure (4):
  • X — is selected from F — , Cl — , Br — , CN — , ClO 4 — , CF 3 SO 3 — , CF 2 HSO 3 — or CFH 2 SO 3 — ;
  • R19 ⁇ R 22 are independently selected from -F, -Cl , -Br, -I, -CN, -NH 2 , -COOH, -OH, -SH, -COCl, -COBr, -CN, -NO 2 , -NH 2 , benzene or phenol ring, or non-conjugated Structure, or a conjugated structure connected by an alkoxy group or an ester group; and
  • R 23 is selected from a non-conjugated structure, or the following chemical structure (5):
  • R 30 is selected from a non-conjugated structure, or a conjugated structure connected through an alkoxy group or an ester group.
  • the conjugated structure may be a compound containing a heterocyclic ring, and the compound containing a heterocyclic ring may be a five-membered heterocyclic compound, a six-membered heterocyclic compound or a benzoheterocyclic compound, wherein the five-membered heterocyclic compound may be Furan, thiophene, pyrrole, thiazole or imidazole, the six-membered heterocyclic compound may be pyridine, pyrazine, pyrimidine, pyridazine, indole, quinoline, pteridine or acridine.
  • the non-conjugated structure can be linear alkanes, branched alkanes, linear or branched alkanes containing alkoxy groups, chains containing ester groups, fluorine-substituted alkane derivatives, in which carbon The chain length contains 1-30 carbon atoms.
  • the conjugated structure in the chemical structure (4) has the following chemical structure (6):
  • R 24 is selected from an oxygen-containing linking group, and the oxygen-containing linking group may be an alkoxy group or an ester group;
  • R 25 to R 29 are independently selected from non-conjugated structures, or through alkoxy or Conjugated structure in which ester groups are connected.
  • the non-conjugated structure can be linear alkanes, branched alkanes, linear or branched alkanes containing alkoxy groups, chains containing ester groups, fluorine-substituted alkane derivatives, in which carbon The chain length contains 1-25 carbon atoms.
  • R 25 to R 29 may also contain a benzene ring or an unsaturated cyclic substance, or have a chain structure of different lengths connected thereto.
  • This application also provides a manufacturing method of the LED white light device 1, as shown in FIG. 3, including the following steps:
  • Step S1 providing a white light source 100
  • Step S2 forming a purification film 200 on the white light source 100; in the purification film 200, a first rhodamine dye 210 for converting cyan light into green light and a first rhodamine dye 210 for converting yellow-orange light into The second rhodamine dye 220 of red light.
  • forming the purification film 200 on the white light source 100 includes;
  • Step S21 dissolving the first rhodamine dye 210 and the second rhodamine dye 220 in a solvent
  • the solvent may be a solvent such as methanol, ethanol, ethyl acetate, n-hexane
  • the first rhodamine dye 210 includes the rhodamine 6G derivative shown in the aforementioned chemical structure (1)
  • the second rhodamine dye 220 includes the rhodamine 101 derivative shown in the aforementioned chemical structure (4); and, the rhodamine 6G derivative and the rhodamine 101 derivative are in the purification membrane 200
  • the mass fraction is 1% to 5%.
  • Step S22 uniformly mixing the material obtained in step S21 with acrylic resin or pressure-sensitive adhesive
  • step S23 the uniformly mixed materials in step S22 are coated on the white light source 100 by knife coating or spin coating, and then dried to obtain the purified film 200.
  • the embodiment of the present application also provides a backlight module, including the LED white light device 1 as described above.
  • the backlight module can be used in any display panel that needs backlight components to pass through the backlight module.
  • the first rhodamine-based dye 210 for converting cyan light into green light and the second rhodamine-based dye 220 for converting yellow-orange light into red light are used to convert the cyan light and yellow-orange light in the white light source 100 Absorb and purify into red and yellow light to achieve the goals of wide color gamut, high purity, and high light source utilization; in addition, the backlight module in this application also includes other conventional structures such as optical films, light guide plates, etc., here ,No longer.
  • the present application provides an LED white light device 1 and a backlight module, including a white light source 100, and a purification film 200 disposed on the white light source 100; the purification film 200 is used to convert cyan light into green light.

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Abstract

一种LED白光器件及背光模组，所述LED白光器件包括白光光源、及设置于白光光源上的纯化膜，所述纯化膜内均匀分布有用于将青绿光转换为绿光的第一罗丹明类染料、及用于将黄橙光转换为红光的第二罗丹明类染料。

Description

LED白光器件及背光模组 技术领域
本申请涉及显示面板技术领域，尤其涉及一种LED白光器件及背光模组。
背景技术
随着显示技术的发展，广色域已经成为一个重要的发展方向。广色域意味着显示装置能够显示出更加丰富多彩的色彩，具有更强的色彩展现能力，这样可以有效的避免在显示时候出现失真和色块的情况。由于色彩的种类增加，使得显示画面中的色彩切换可以更加自然，使得画面的层次更加的分明，能够展现更多的细节和更加接近真实的效果。对于LED液晶电视，因为屏幕本身并不具备自发光属性，因此，提升色域主要通过三原色彩膜滤光片和背光来实现。
技术问题
目前，提升背光纯度的方式为采用蓝色LED和红绿荧光材料的背光，或采用量子点QD背光技术；然而量子点QD背光技术虽然可以对色域有大幅的提升，但是QD含重金属元素、热稳定性差和成本高一直是制约着其发展的重要因素；而采用蓝色LED和红绿荧光材料最大的弊端在于最终发出的红绿蓝三原色光并不纯净；因为其在提升色域的过程当中并未对红绿蓝三原色光进行提纯，存在黄橙光和/或青绿光，所以发出的红绿蓝三原色光并不纯净。
技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供一种LED白光器件及背光模组，以解决现有显示的背光中红绿蓝三原色光不纯净、色域较窄的问题。
本申请实施例提供了一种LED白光器件，包括白光光源、及设置于白光光源上的纯化膜；
所述纯化膜内均匀分布有用于将青绿光转换为绿光的第一罗丹明类染料、及用于将黄橙光转换为红光的第二罗丹明类染料。
在本申请实施例的LED白光器件中，所述第一罗丹明类染料包括以下化学结构(一)所示的罗丹明6G衍生物：
Figure PCTCN2019117414-appb-000001
其中，
X —选自F —、Cl —、Br —、CN —、ClO 4 —、CF 3SO 3 —、CF 2HSO 3 —或CFH 2SO 3 —；
R 1～R 4独立选自-F、-Cl、-Br、-I或-CN，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；
R 5～R 6选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；
R 7～R 10独立选自-F、-Cl、-Br、-I或-CN，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；以及
R 11选自-F、-Cl、-Br、-I或-CN，或具有非共轭的结构，或具有通过烷氧基或酯基相连接的共轭结构、或具有以下化学结构(二)；
Figure PCTCN2019117414-appb-000002
R 18选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
在本申请实施例的LED白光器件中，所述化学结构(一)中所述共轭结构具有以下化学结构(三)：
Figure PCTCN2019117414-appb-000003
其中，
R 12选自含氧的连接基团；以及
R 13～R 17独立选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
在本申请实施例的LED白光器件中，所述化学结构(一)中所述共轭结构独立选自五元杂环化合物、六元杂环化合物或苯并杂环化合物，
其中，所述五元杂环化合物是呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物是吡啶、吡嗪、嘧啶、哒嗪、吲哚、喹啉、蝶啶或吖啶。
在本申请实施例的LED白光器件中，所述第二罗丹明类染料包括以下化学结构(四)所示的罗丹明101衍生物：
Figure PCTCN2019117414-appb-000004
其中，
X —选自F —、Cl —、Br —、CN —、ClO 4 —、CF 3SO 3 —、CF 2HSO 3 —或CFH 2SO 3 —；
R 19～R 22独立选自-F、-Cl、-Br、-I、-CN、-NH 2、-COOH、-OH、-SH、-COCl、-COBr、-CN、-NO 2、-NH 2、苯或酚环，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；以及
R 23选自非共轭的结构，或以下化学结构(五)：
Figure PCTCN2019117414-appb-000005
R 30选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
在本申请实施例的LED白光器件中，所述化学结构(四)中所述共轭结构具有以下化学结构(六)：
Figure PCTCN2019117414-appb-000006
其中，
R 24选自含氧的连接基团；以及
R 25～R 29独立选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
在本申请实施例的LED白光器件中，所述化学结构(四)中所述共轭结构独立选自五元杂环化合物、六元杂环化合物或苯并杂环化合物，
其中，所述五元杂环化合物是呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物是吡啶、吡嗪、嘧啶、哒嗪、吲哚、喹啉、蝶啶或吖啶。
在本申请实施例的LED白光器件中，所述纯化膜的材料为透明树脂或压敏胶，所述第一罗丹明类染料和第二罗丹明类染料均匀分布于所述透明树脂或压敏胶中。
在本申请实施例的LED白光器件中，所述白光光源包括蓝光芯片和覆盖于蓝光芯片上的黄色荧光粉。
在本申请实施例的LED白光器件中，所述纯化膜的厚度为1～100um。
在本申请实施例的LED白光器件中，所述第一罗丹明类染料所转换青绿光的波长范围为480nm～510nm。
在本申请实施例的LED白光器件中，所述第二罗丹明类染料所转换黄橙光的波长范围为570nm～610nm。
在本申请实施例的LED白光器件中，所述第一罗丹明类染料占所述纯化膜的质量份数为1％～5％。
在本申请实施例的LED白光器件中，所述第二罗丹明类染料占所述纯化膜的质量份数为1％～5％。
根据本申请的上述目的，本申请实施例还提供了一种背光模组，包括如前所述的LED白光器件。
有益效果
本申请的有益效果为：本申请提供一种LED白光器件和背光模组，包括白光光源、及设置于白光光源上的纯化膜；通过纯化膜内用于将青绿光转换为绿光的第一罗丹明类染料和用于将黄橙光转换为红光的第二罗丹明类染料，将所述白光光源中青绿光和黄橙光进行吸收并提纯为红光和黄光，不仅可以提升背光的色彩纯度，也可以提升光源的利用率，同时也达到了节能的目的。
附图说明
为了更清楚地说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介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，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获得其他的附图。
图1为本申请实施例提供的一种LED白光器件的结构示意图；
图2为将背光纯色转化机理的示意图；
图3为本申请实施例提供的一种LED白光器件的制作方法的流程框图。
本发明的实施方式
这里所公开的具体结构和功能细节仅仅是代表性的，并且是用来描述本申请的示例性实施例的目的。但是本申请可以通过许多替换形式来具体实现，并且不应当被解释成仅仅受限于这里所阐述的实施例。
在本申请的描述中，需要理解的是，术语“中心”、“横向”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用来描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。另外，术语“包括”及其任何变形，意图在于覆盖不排他的包含。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
这里所使用的术语仅仅是为了描述具体实施例而不意图限制示例性实施例。除非上下文明确地另有所指，否则这里所使用的单数形式“一个”、“一项”还意图包括复数。还应当理解的是，这里所使用的术语“包括”和/或“包含”规定所陈述的特征、整数、步骤、操作、单元和/或组件的存在，而不排除存在或添加一个或更多其他特征、整数、步骤、操作、单元、组件和/或其组合。
下面结合附图和实施例对本申请作进一步说明。
如图1至图2所示，本申请实施例提供了一种LED白光器件1，包括白光光源100、及设置于白光光源100上的纯化膜200；
所述纯化膜200内均匀分布有用于将青绿光转换为绿光的第一罗丹明类染料210、及用于将黄橙光转换为红光的第二罗丹明类染料220。
可以理解的是，本申请中的白光光源100可以是任一现有运用于面板上产生 白光的器件，具体的，如图1所示，所述白光光源100包括蓝光芯片110和覆盖于蓝光芯片110上的黄色荧光粉120；具体的，所述白光光源100还可以包括基座130，所述蓝光芯片110和黄色荧光粉120均设置于所述基座130中，当然，在具体结构中，所述黄色荧光粉120所对应部分，也可以是用含有黄色荧光粉120的膜层进行替代，在此不做限制，此外，在一实施例中，纯化膜200的厚度为1～100um，所述纯化膜200的材料为透明树脂或压敏胶，所述第一罗丹明类染料210和第二罗丹明类染料220均匀分布于所述透明树脂或压敏胶中。
承上，所述纯化膜200内均匀分布有用于将青绿光转换为绿光的第一罗丹明类染料210、及用于将黄橙光转换为红光的第二罗丹明类染料220，如图1所示，示意的，将所述第一罗丹明类染料210和第二罗丹明类染料220通过颗粒的形式在图1中进行结构示意，但其具体在所述纯化膜200中的存在形式并不以此为限，所述第一罗丹明类染料210将所述白光光源100所发出的白光中的青绿光吸收然后转换为绿光出射，所述第二罗丹明类染料220将所述白光光源100所发出的白光中黄橙光吸收然后转换为红光出射，具体的，如图2所示，在A处吸收所述青绿光的波长范围可以是480～510nm；在B处吸收所述黄橙光的波长范围可以是570～610nm。
在一实施例中，所述第一罗丹明类染料210包括以下化学结构(一)所示的罗丹明6G衍生物：
Figure PCTCN2019117414-appb-000007
其中，
X —选自F —、Cl —、Br —、CN —、ClO 4 —、CF 3SO 3 —、CF 2HSO 3 —或CFH 2SO 3 —；
R 1～R 4独立选自-F、-Cl、-Br、-I或-CN，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；
R 5～R 6选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；
R 7～R 10独立选自-F、-Cl、-Br、-I或-CN，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；以及
R 11选自-F、-Cl、-Br、-I或-CN，或具有非共轭的结构，或具有通过烷氧基或酯基相连接的共轭结构、或具有以下化学结构(二)；
Figure PCTCN2019117414-appb-000008
R 18选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；
所述共轭结构可以是含有杂环的化合物，所述含有杂环的化合物是五元杂环化合物、六元杂环化合物或苯并杂环化合物，其中，所述五元杂环化合物可以是呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物可以是吡啶、吡嗪、嘧啶、哒嗪、吲哚、喹啉、蝶啶或吖啶。所述非共轭的结构可以是直链烷烃、有支链的烷烃、含有烷氧基的直链或有支链的烷烃、含有酯基的链状物、氟取代的烷烃衍生物，其中碳链长度为含有1～25个碳原子。
例如，所述化学结构(一)中所述共轭结构具有以下化学结构(三)：
Figure PCTCN2019117414-appb-000009
其中，R 12选自含氧的连接基团，所述含氧的连接基团可以是烷氧基或酯基，其中碳链长度为含有1～25个碳原子；R 13～R 17独立选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。所述非共轭的结构可以是直链烷烃、有支链的烷烃、含有烷氧基的直链或有支链的烷烃、含有酯基的链状物、氟取代的烷烃衍生物，其中碳链长度为含有1～25个碳原子。R 13～R 17也可以含有苯环或不饱和环状物质，或者具有与其连接的不同长度的链状结构。
在一实施例中，所述第二罗丹明类染料220包括以下化学结构(四)所示的罗丹明101衍生物：
Figure PCTCN2019117414-appb-000010
其中，
X —选自F —、Cl —、Br —、CN —、ClO 4 —、CF 3SO 3 —、CF 2HSO 3 —或CFH 2SO 3 —；R19～R 22独立选自-F、-Cl、-Br、-I、-CN、-NH 2、-COOH、-OH、-SH、-COCl、-COBr、-CN、-NO 2、-NH 2、苯或酚环，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；以及
R 23选自非共轭的结构，或以下化学结构(五)：
Figure PCTCN2019117414-appb-000011
R 30选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
所述共轭结构可以是含有杂环的化合物，所述含有杂环的化合物是五元杂环化合物、六元杂环化合物或苯并杂环化合物，其中，所述五元杂环化合物可以是呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物可以是吡啶、吡嗪、嘧啶、哒嗪、吲哚、喹啉、蝶啶或吖啶。所述非共轭的结构可以是直链烷烃、有支链的烷烃、含有烷氧基的直链或有支链的烷烃、含有酯基的链状物、氟取代的烷烃衍生物，其中碳链长度为含有1～30个碳原子。
例如，所述化学结构(四)中所述共轭结构具有以下化学结构(六)：
Figure PCTCN2019117414-appb-000012
其中，R 24选自含氧的连接基团，所述含氧的连接基团可以是烷氧基或酯基；R 25～R 29独立选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。所述 非共轭的结构可以是直链烷烃、有支链的烷烃、含有烷氧基的直链或有支链的烷烃、含有酯基的链状物、氟取代的烷烃衍生物，其中碳链长度为含有1～25个碳原子。R 25～R 29也可以含有苯环或不饱和环状物质，或者具有与其连接的不同长度的链状结构。
本申请还提供一种LED白光器件1的制作方法，如图3所示，包括如下步骤：
步骤S1，提供一白光光源100；
步骤S2，在所述白光光源100上形成纯化膜200；所述纯化膜200内均匀分布有用于将青绿光转换为绿光的第一罗丹明类染料210、及用于将黄橙光转换为红光的第二罗丹明类染料220。
其中，所述在所述白光光源100上形成纯化膜200包括；
步骤S21，将所述第一罗丹明类染料210和所述第二罗丹明类染料220溶解在溶剂中；
其中，所述溶剂可以是甲醇、乙醇、乙酸乙酯、正己烷等溶剂，具体的，所述第一罗丹明类染料210包括如前述化学结构(一)所示的罗丹明6G衍生物，所述第二罗丹明类染料220包括如前述化学结构(四)所示的罗丹明101衍生物；并且，所述罗丹明6G衍生物和所述罗丹明101衍生物在所述纯化膜200中的质量分数均为1％～5％。
步骤S22，将步骤S21中所得到的材料与丙烯酸树脂或压敏胶均匀混合；
步骤S23，将步骤S22中均匀混合后的材料通过刮涂或旋涂的方式涂布于所述白光光源100上，然后烘干，以得到所述纯化膜200。
本申请实施例还提供了一种背光模组，包括如前所述的LED白光器件1，显然，所述背光模组可以运用在任何需要有背光部件的显示面板当中，以通过背光模组中用于将青绿光转换为绿光的第一罗丹明类染料210和用于将黄橙光转换为红光的第二罗丹明类染料220，将所述白光光源100中青绿光和黄橙光进行吸收并提纯为红光和黄光，达到广色域、高纯度、光源利用率高的目的；此外，本申请中的背光模组还包括其它光学膜片、导光板等常规结构，在此，不再赘述。
综上，本申请提供一种LED白光器件1和背光模组，包括白光光源100、及设置于白光光源100上的纯化膜200；通过纯化膜200内用于将青绿光转换为绿光的第一罗丹明类染料210和用于将黄橙光转换为红光的第二罗丹明类染料220，将所述白光光源100中青绿光和黄橙光进行吸收并提纯为红光和黄光，不仅可以提升背光的色彩纯度，也可以提升光源的利用率，同时也达到了节能的目的。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (15)

  1. 一种LED白光器件，包括白光光源、及设置于白光光源上的纯化膜；
    所述纯化膜内均匀分布有用于将青绿光转换为绿光的第一罗丹明类染料、及用于将黄橙光转换为红光的第二罗丹明类染料。
  2. 根据权利要求1所述的LED白光器件，其中，所述第一罗丹明类染料包括以下化学结构(一)所示的罗丹明6G衍生物：
    Figure PCTCN2019117414-appb-100001
    其中，
    X —选自F —、Cl —、Br —、CN —、ClO 4 —、CF 3SO 3 —、CF 2HSO 3 —或CFH 2SO 3 —；
    R 1～R 4独立选自-F、-Cl、-Br、-I或-CN，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；
    R 5～R 6选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；
    R 7～R 10独立选自-F、-Cl、-Br、-I或-CN，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；以及
    R 11选自-F、-Cl、-Br、-I或-CN，或具有非共轭的结构，或具有通过烷氧基或酯基相连接的共轭结构、或具有以下化学结构(二)；
    Figure PCTCN2019117414-appb-100002
    R 18选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
  3. 根据权利要求2所述的LED白光器件，其中，所述化学结构(一)中所述共轭结构具有以下化学结构(三)：
    Figure PCTCN2019117414-appb-100003
    其中，
    R 12选自含氧的连接基团；以及
    R 13～R 17独立选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
  4. 根据权利要求2所述的LED白光器件，其中，所述化学结构(一)中所述共轭结构独立选自五元杂环化合物、六元杂环化合物或苯并杂环化合物，
    其中，所述五元杂环化合物是呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物是吡啶、吡嗪、嘧啶、哒嗪、吲哚、喹啉、蝶啶或吖啶。
  5. 根据权利要求1所述的LED白光器件，其中，所述第二罗丹明类染料包括以下化学结构(四)所示的罗丹明101衍生物：
    Figure PCTCN2019117414-appb-100004
    其中，
    X —选自F —、Cl —、Br —、CN —、ClO 4 —、CF 3SO 3 —、CF 2HSO 3 —或CFH 2SO 3 —；
    R 19～R 22独立选自-F、-Cl、-Br、-I、-CN、-NH2、-COOH、-OH、-SH、-COCl、-COBr、-CN、-NO 2、-NH 2、苯或酚环，或非共轭的结构，或通过烷氧基或酯基相连接的共轭结构；以及
    R 23选自非共轭的结构，或以下化学结构(五)：
    Figure PCTCN2019117414-appb-100005
    R 30选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
  6. 根据权利要求5所述的LED白光器件，其中，所述化学结构(四)中所 述共轭结构具有以下化学结构(六)：
    Figure PCTCN2019117414-appb-100006
    其中，
    R 24选自含氧的连接基团；以及
    R 25～R 29独立选自非共轭的结构，或通过烷氧基或酯基相连接的共轭结构。
  7. 根据权利要求5所述的LED白光器件，其中，所述化学结构(四)中所述共轭结构独立选自五元杂环化合物、六元杂环化合物或苯并杂环化合物，
    其中，所述五元杂环化合物是呋喃、噻吩、吡咯、噻唑或咪唑，所述六元杂环化合物是吡啶、吡嗪、嘧啶、哒嗪、吲哚、喹啉、蝶啶或吖啶。
  8. 根据权利要求1所述的LED白光器件，其中，所述纯化膜的材料为透明树脂或压敏胶，所述第一罗丹明类染料和第二罗丹明类染料均匀分布于所述透明树脂或压敏胶中。
  9. 根据权利要求1所述的LED白光器件，其中，所述白光光源包括蓝光芯片和覆盖于蓝光芯片上的黄色荧光粉。
  10. 根据权利要求1所述的LED白光器件，其中，所述纯化膜的厚度为1～100um。
  11. 根据权利要求1所述的LED白光器件，其中，所述第一罗丹明类染料所转换青绿光的波长范围为480nm～510nm。
  12. 根据权利要求1所述的LED白光器件，其中，所述第二罗丹明类染料所转换黄橙光的波长范围为570nm～610nm。
  13. 根据权利要求1所述的LED白光器件，其中，所述第一罗丹明类染料占所述纯化膜的质量份数为1％～5％。
  14. 根据权利要求1所述的LED白光器件，其中，所述第二罗丹明类染料占所述纯化膜的质量份数为1％～5％。
  15. 一种背光模组，包括如权利要求1所述的LED白光器件。
PCT/CN2019/117414 2019-10-14 2019-11-12 Led白光器件及背光模组 WO2021072853A1 (zh)

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