CN108318950B - Backlight module and diffusion sheet thereof - Google Patents
Backlight module and diffusion sheet thereof Download PDFInfo
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- CN108318950B CN108318950B CN201810173170.8A CN201810173170A CN108318950B CN 108318950 B CN108318950 B CN 108318950B CN 201810173170 A CN201810173170 A CN 201810173170A CN 108318950 B CN108318950 B CN 108318950B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a backlight module and a diffusion sheet thereof. The diffusion sheet comprises a plurality of light diffusion particles distributed in the diffusion sheet, the particle sizes of the light diffusion particles are different, the light diffusion particles are doped with a filter material, and the filter material is used for absorbing light with a preset color. Therefore, the backlight diffusion effect can be improved, and the backlight purity can be improved.
Description
Technical Field
The invention relates to the field of display, in particular to a backlight module and a diffusion sheet thereof.
Background
With the explosion of display technology, high color gamut has become an important development direction. The high color gamut means that the display picture has more colorful colors and stronger color display capability. For a Liquid Crystal Display (LCD), since the Display panel itself does not emit light, the most fundamental method for improving the color gamut needs to start with a backlight, that is, to improve the purity of the backlight, especially the purity of the three primary colors (red, green, and blue).
At present, there are two main ways to improve the backlight purity: firstly, a blue LED is matched with the backlight of red and green fluorescent materials; secondly, a QD (Quantum dot) backlight technique is adopted. However, the greatest disadvantage of the two methods is that the three primary colors of red, green and blue are not purified, so that the three primary colors finally emitted are not pure.
Disclosure of Invention
In view of this, the present invention provides a backlight module and a diffusion sheet thereof, which are beneficial to improving the backlight purity and the diffusion effect of the backlight.
The diffusion sheet of an embodiment of the present invention includes a plurality of light diffusion particles distributed in the diffusion sheet, the light diffusion particles have different particle diameters, and the light diffusion particles are doped with a filter material, and the filter material is used for absorbing light of a predetermined color.
The backlight module of an embodiment of the invention comprises the diffusion sheet.
Has the advantages that: the invention designs that a plurality of light diffusion particles with different particle diameters are added into the diffusion sheet, and the plurality of light diffusion particles can refract, scatter and reflect the backlight in the process that the backlight passes through the diffusion sheet, so that the diffusion effect of the backlight is improved, and meanwhile, the light filtering material doped with the light diffusion particles can absorb light with preset colors, such as light except red light, green light and blue light, so that the purity of the backlight can be favorably improved.
Drawings
FIG. 1 is a schematic structural diagram of a diffusion sheet according to an embodiment of the invention;
FIG. 2 is a schematic structural view of a light diffusing particle according to a first embodiment of the present invention;
FIG. 3 is a schematic structural view of a light diffusing particle according to a second embodiment of the present invention;
FIG. 4 is a schematic structural view of a light diffusing particle according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a backlight module according to an embodiment of the invention.
Detailed Description
The main purposes of the invention are: the diffusion sheet is added with a plurality of light diffusion particles with different particle sizes, and the light diffusion particles are doped with a light filtering material, in the process that the backlight passes through the diffusion sheet, the light diffusion particles can enable the backlight to be refracted, scattered and reflected, so that the diffusion effect of the backlight is improved, meanwhile, the light filtering material can absorb light with preset colors, such as light except red light, green light and blue light, so that the improvement of the backlight purity is facilitated.
The technical solutions of the exemplary embodiments provided by the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention. It should be noted that the features of the following embodiments and examples may be combined with each other without conflict. Furthermore, directional terms such as "upper" and "lower" are used throughout the present disclosure to better describe the technical solutions of the embodiments, and are not used to limit the protection scope of the present disclosure.
Fig. 1 is a schematic structural diagram of a diffusion sheet according to an embodiment of the invention. As shown in fig. 1, the diffusion sheet 10 of the present embodiment includes a first coating layer 11, a second coating layer 12 and a transparent substrate 13, the first coating layer 11 and the second coating layer 12 are respectively disposed on two sides of the transparent substrate 13, the material of the transparent substrate 13 includes but is not limited to any one of PC (Polycarbonate), PET (polyethylene terephthalate), or a combination thereof, and the material of the first coating layer 11 and the second coating layer 12 may be the same, for example, both are acrylic resin, and both are doped with light diffusion particles 14.
In the process that the backlight passes through the second coating layer 12 (the dotted arrow in the figure indicates the transmission line of the backlight), the light diffusion particles 14 can refract, scatter and reflect the backlight, so that the light passing through the diffusion sheet 10 is more dispersed, thereby improving the diffusion effect of the backlight, and at the same time, since the light diffusion particles 14 are doped with the filter material, the filter material absorbs the light of the predetermined color, thereby being beneficial to improving the purity of the backlight.
The filter material may be used to absorb light other than the three primary colors of red, green, and blue, and in this embodiment, a suitable type of filter material may be selected according to the color of the absorbed light. The absorption of cyan-green light and yellow light will be described as an example.
Fig. 2 is a schematic structural view of a light diffusion particle according to a first embodiment of the present invention. Referring to fig. 2, the light diffusion particles 14 include microspheres 141, and a substrate layer 142 and a filter layer 143 sequentially wrapping the microspheres 141, wherein a filter material (Dye)1431 is doped in the filter layer 143. The surface of the microsphere 141 is positively charged, and the surface of the substrate layer 142 is negatively charged, based on the principle that positive and negative charges attract each other, the substrate layer 142 is stably wrapped outside the microsphere 141, so that the filter layer 143 on the outer surface of the substrate layer 142 is stably wrapped outside the microsphere 141.
Wherein, the particle diameters of the plurality of light diffusion particles 14 doped in the first coating layer 11 are different, and the particle diameters of the plurality of light diffusion particles 14 doped in the second coating layer 12 are the same. Specifically, in the first coating layer 11, the diameters of the microspheres 141 of the plurality of light diffusion particles 14 are different, and therefore, it is only necessary to set the same thickness of the substrate layers 142 coated outside the respective microspheres 141 and the same filter layer 143, that is, the particle diameters of the respective light diffusion particles 14 are different; in the second coating layer 12, the diameter of the microspheres 141 of the light diffusion particles 14 is the same, and therefore, the particle size of each light diffusion particle 14 can be the same only by setting the thickness of the substrate layer 142 coated outside each microsphere 141 to be the same and setting the filter layer 143 to be the same. Further, the light diffusion particles 14 having the same particle size may be uniformly distributed in the second coating layer 12, and the light diffusion particles 14 having different particle sizes may be irregularly distributed in the first coating layer 11.
In this embodiment, the material of the microsphere 141 and the filter layer 143 may be a Polymer (Polymer) meeting requirements, the material includes but is not limited to PET, PC, PS (Polystyrene), Poly Ether Ester (PEET), and PMMA (Polymethyl Methacrylate), the material of the substrate layer 142 may be silicon oxide, such as SiO2(silicon dioxide), tetraethyl orthosilicate (TEOS) is used, TEOS can be hydrolyzed into silicic acid under the catalytic condition of ammonia water, and the silicic acid can form a layer of SiO on the surface of the microsphere 141 through condensation and uniform nucleation2A wrapping layer; the surface of the substrate layer 142 can be negatively charged through amination. Here, the light diffusion particles 14 may be regarded as a kind of composite microspheres.
In this embodiment, the light diffusion particles 14 with different particle sizes may be prepared by a layer-by-layer coating method, and the particle sizes of the light diffusion particles 14 may be distributed between 200nm and 800 nm. The microsphere 141 is PS, and the substrate layer 142 is SiO2The material of the filter layer 143 is PMMA, specifically: firstly, synthesizing polystyrene spheres with positive charges and different particle sizes by adopting an emulsion polymerization process, wherein the particle sizes can be distributed between 100 nm and 400 nm; secondly, covering a silicon dioxide layer with negative charges on the outer part of the polystyrene sphere, wherein the thickness of the silicon dioxide layer is 50-200 nm; and finally, doping the light filtering material 1431 doped with the cyan-green light absorption material into the PMMA layer, and wrapping the PMMA layer outside the silicon dioxide layer, wherein the thickness is 50-400 nm.
Similarly, the light diffusion particles 14 having the same particle size can be obtained by the above-described principle.
Fig. 3 is a schematic structural view of a light diffusion particle according to a second embodiment of the present invention. Referring to fig. 1 and 3, the light diffusion particles 14 include microspheres 241, and a substrate layer 242 and a filter layer 243 sequentially wrapping the microspheres 241, wherein the filter material 2431 is doped in the filter layer 243. The surface of the microsphere 241 is positively charged, while the surface of the substrate layer 242 is negatively charged, and based on the principle that positive and negative charges attract each other, the substrate layer 242 is stably wrapped outside the microsphere 241, so that the filter layer 243 on the outer surface of the substrate layer 242 is stably wrapped outside the microsphere 241.
In the first coating layer 11, the diameters of the microspheres 241 of the plurality of light diffusion particles 14 are different, and therefore, it is only necessary to set the same thickness of the substrate layer 242 coated outside each microsphere 241 and the same filter layer 243, so that the particle diameters of the light diffusion particles 14 can be different. In the second coating layer 12, the diameter of the microspheres 241 of the light diffusion particles 14 is the same, so that the particle size of each light diffusion particle 14 can be the same by only providing the same thickness of the substrate layer 242 coated outside each microsphere 241 and the same filter layer 243.
In this embodiment, the material of the microspheres 241 and the filter layer 243 may be Polymer meeting the requirement, the material includes but is not limited to PET, PC, PS, PEET, and PMMA, and the material of the substrate layer 242 may be silicon oxide, such as SiO2. The preparation methods of the microspheres 241, the substrate layer 242, and the filter layer 243 can be referred to above, and are not described herein again.
Unlike the embodiment shown in fig. 2, in the present embodiment, the light diffusion particles 14 doped in the first coating layer 11 are used to absorb yellow light, that is, the light filter 2431 included in the light diffusion particles 14 is used to absorb yellow light, so as to improve the backlight purity. Wherein the particle size of the light diffusion particles 14 can be distributed between 200nm and 800 nm.
Fig. 4 is a schematic structural view of a light diffusing particle according to a third embodiment of the present invention. Referring to fig. 1 and 4, the light diffusion particles 14 include a microsphere 341, and a substrate layer 342 and a filter layer 343 sequentially wrapping the microsphere 341, wherein the filter material 3431 is doped in the filter layer 343. The surface of the microsphere 341 is positively charged, while the surface of the substrate layer 342 is negatively charged, and based on the principle that positive and negative charges attract each other, the substrate layer 342 is stably wrapped outside the microsphere 341, so that the filter layer 343 on the outer surface of the substrate layer 342 is stably wrapped outside the microsphere 341.
In the first coating layer 11, the diameters of the microspheres 341 of the plurality of light diffusion particles 14 are different, and therefore, it is only necessary to set the same thickness of the substrate layer 342 coated outside each microsphere 341 and the same filter layer 343, so that the particle diameters of the light diffusion particles 14 can be different. In the second coating layer 12, the diameter of the microspheres 341 of the light diffusion particles 14 is the same, so that the particle size of each light diffusion particle 14 can be the same only by setting the thickness of the substrate layer 342 coated outside each microsphere 341 to be the same and setting the filter layer 343 to be the same.
In this embodiment, the material of the microspheres 341 and the filter layer 343 may be Polymer meeting the requirement, the material includes but is not limited to PET, PC, PS, PEET, and PMMA, and the material of the substrate layer 342 may be silicon oxide, such as SiO2. The preparation methods of the microsphere 341, the substrate layer 342, and the filter layer 343 may refer to the above description, and are not described herein again.
Unlike the embodiment shown in fig. 2 and 3, in the present embodiment, the light diffusion particles 14 doped in the first coating layer 11 are used to absorb yellow light and cyan light, that is, the light diffusion particles 14 include a first filter material 3431 and a second filter material 3432, the first filter material 3431 is used to absorb cyan light, and the second filter material 3432 is used to absorb yellow light, so that the backlight purity can be improved.
As shown in fig. 5, the backlight module 50 of the present embodiment includes a reflection plate 51, a light source 52, a diffusion plate 53, a diffusion sheet 54 and a brightness enhancement film 55, wherein the reflection plate 51 can be fixed on an outer frame 56, the light source 52 is disposed on one side of an effective reflection surface of the reflection plate 51 and can be an LED, the diffusion plate 53, the diffusion sheet 54 and the brightness enhancement film 55 are sequentially disposed in a light emitting direction of the light source 52, and a display panel 60 can be disposed on one side of the brightness enhancement film 55 opposite to the diffusion sheet 54. The assembly and operation principle of these structural elements can refer to the prior art, and are not described herein again, but different from the prior art, the diffusion sheet 54 of this embodiment has the same structural design as the diffusion sheet 10 shown in fig. 1, so the backlight module 50 also has the beneficial effects that the diffusion sheet 10 can produce.
It should be understood that the diffusion sheet 10 of the present invention is not only suitable for the direct type backlight module 50 shown in fig. 5, but also suitable for the side type backlight module.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by using the contents of the specification and the drawings, such as the mutual combination of technical features between various embodiments, or the direct or indirect application to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The diffusion sheet is characterized by comprising a plurality of light diffusion particles distributed in the diffusion sheet, wherein the particle diameters of the light diffusion particles are different, and the light diffusion particles are doped with a light filtering material, and the light filtering material is used for absorbing light with a preset color; the light diffusion particles comprise microspheres and a filter layer wrapped outside the microspheres, and the filter material is doped in the filter layer.
2. The diffusion sheet according to claim 1, wherein the filter material comprises at least one of a first filter material for absorbing cyan light and a second filter material for absorbing yellow light.
3. The diffusion sheet according to claim 1, wherein the microspheres of the plurality of light diffusing particles have different diameters.
4. The diffuser sheet of claim 1 wherein the surface of the microspheres are positively charged, the light diffusing particles further comprise a negatively charged substrate layer, the substrate layer surrounding the exterior of the microspheres, and the filter layer surrounding the exterior of the substrate layer.
5. The diffusion sheet according to claim 1, wherein the diffusion sheet comprises a light-transmitting substrate and a first coating layer disposed on one side of the light-transmitting substrate, wherein the light diffusion particles are distributed in the first coating layer.
6. The diffusion sheet according to claim 5, further comprising a second coating layer disposed on the other side of the light-transmitting substrate, wherein light-diffusing particles having the same particle size are distributed in the second coating layer.
7. The diffusion sheet according to claim 6, wherein the first coating layer and the second coating layer are made of the same material.
8. The diffusion sheet as claimed in claim 7, wherein the first and second coating layers are made of a material including acryl resin.
9. A backlight module, characterized in that the backlight module comprises the diffuser of any one of the claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810173170.8A CN108318950B (en) | 2018-03-01 | 2018-03-01 | Backlight module and diffusion sheet thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810173170.8A CN108318950B (en) | 2018-03-01 | 2018-03-01 | Backlight module and diffusion sheet thereof |
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| CN108318950A CN108318950A (en) | 2018-07-24 |
| CN108318950B true CN108318950B (en) | 2020-09-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116625A (en) * | 2018-09-03 | 2019-01-01 | 深圳市华星光电技术有限公司 | Backlight module and its optical diaphragm |
| CN109164628B (en) * | 2018-09-27 | 2020-04-28 | 深圳市华星光电技术有限公司 | Display panel and display device |
| CN113325494A (en) * | 2021-01-25 | 2021-08-31 | 深圳市隆利科技股份有限公司 | Reflection-enhanced optical film and direct type backlight module applying same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003032027A1 (en) * | 2001-10-12 | 2003-04-17 | Aleksandr Yuryevich Romanenko | Device for the colour zonal filtering of visible light |
| KR20060128095A (en) * | 2005-06-08 | 2006-12-14 | 엘지.필립스 엘시디 주식회사 | Backlight assembly and liquid crystal display havingthe the same |
| CN105589117A (en) * | 2015-12-21 | 2016-05-18 | 佛山佛塑科技集团股份有限公司 | Optical diffusion barrier with covering power and light transmittance compatibility and preparation method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462743C (en) * | 2007-07-27 | 2009-02-18 | 宁波高新区激智科技有限公司 | Optical pervasion thin film and LCD device using same |
| CN101408628A (en) * | 2007-10-10 | 2009-04-15 | 群康科技(深圳)有限公司 | Diffusion chip and manufacturing process thereof and backlight module unit and LCD device |
| DE102009025266B4 (en) * | 2009-06-17 | 2015-08-20 | Osram Opto Semiconductors Gmbh | Optoelectronic semiconductor device |
| CN101764149B (en) * | 2010-01-13 | 2012-04-18 | 友达光电股份有限公司 | Organic light-emitting diode display device |
| US20120020608A1 (en) * | 2010-02-11 | 2012-01-26 | Gary Gibson | Plasmonic Element With Waveguide Trapping |
| CN102231021B (en) * | 2011-06-21 | 2013-02-13 | 华映光电股份有限公司 | Display |
| CN102540289B (en) * | 2011-12-31 | 2013-11-06 | 宁波长阳科技有限公司 | Optical diffusion film preparation method, a backlight module and a LCD |
| JP6866577B2 (en) * | 2016-05-31 | 2021-04-28 | 大日本印刷株式会社 | Light wavelength conversion composition, light wavelength conversion particles, light wavelength conversion member, light wavelength conversion sheet, backlight device, and image display device |
-
2018
- 2018-03-01 CN CN201810173170.8A patent/CN108318950B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003032027A1 (en) * | 2001-10-12 | 2003-04-17 | Aleksandr Yuryevich Romanenko | Device for the colour zonal filtering of visible light |
| KR20060128095A (en) * | 2005-06-08 | 2006-12-14 | 엘지.필립스 엘시디 주식회사 | Backlight assembly and liquid crystal display havingthe the same |
| CN105589117A (en) * | 2015-12-21 | 2016-05-18 | 佛山佛塑科技集团股份有限公司 | Optical diffusion barrier with covering power and light transmittance compatibility and preparation method thereof |
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Address after: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |