CN112764263A - Backlight structure capable of improving color gamut - Google Patents
Backlight structure capable of improving color gamut Download PDFInfo
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- CN112764263A CN112764263A CN201911001624.4A CN201911001624A CN112764263A CN 112764263 A CN112764263 A CN 112764263A CN 201911001624 A CN201911001624 A CN 201911001624A CN 112764263 A CN112764263 A CN 112764263A
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- film
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- sheet
- prism
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- 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
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
Abstract
The invention discloses a backlight structure capable of improving color gamut, which comprises a reflecting sheet, a light bar, a diffusion plate and an optical diaphragm group, wherein the reflecting sheet comprises a plane and four inclined planes, the light bar comprises a plurality of LED light sources emitting blue light, the plane is provided with a plurality of light source through holes with the same number of the LED light sources, the LED light sources are convexly arranged in the light source through holes, the diffusion plate is arranged on an opening surrounded by the four inclined planes, and the optical diaphragm group is arranged on the diffusion plate; the optical film group comprises a quantum film, a composite film, a DBEF film and a diffusion sheet, wherein the diffusion sheet, the DBEF film, the composite film and the quantum film are sequentially stacked from top to bottom, and the quantum film is arranged on the diffusion plate. By the mode, the color gamut can be improved, the watching taste is improved, and in addition, the light emitting brightness of the liquid crystal display device can be improved.
Description
Technical Field
The invention relates to the technical field of liquid crystal display equipment, in particular to a backlight structure capable of improving color gamut.
Background
With the vigorous development of liquid crystal 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. The backlight of the existing liquid crystal display device usually adopts a structure of a reflector plate, an LED light source and a diffusion plate, wherein the LED light source adopts a light source emitting white light, the color gamut of NTSC (National Television Standards Committee, usa) which can be achieved by the existing liquid crystal display device is usually about 75%, the color gamut of the existing liquid crystal display device is lower, and the watching taste is influenced; in addition, the conventional liquid crystal display device has low light emission luminance.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a backlight structure capable of improving the color gamut, which can solve the problems of lower color gamut and lower brightness of the existing liquid crystal display device.
(II) technical scheme
In order to solve the technical problems, the invention provides the following technical scheme: a backlight structure capable of improving color gamut, comprising: the LED lamp comprises a reflecting sheet, a lamp strip, a diffusion plate and an optical diaphragm group, wherein the reflecting sheet comprises a plane and four inclined planes, the plane is rectangular, the four inclined planes are respectively formed by extending four edges of the plane upwards in an inclined mode, the lamp strip comprises a plurality of LED light sources emitting blue light, the plane is provided with a plurality of light source through holes with the same number as the LED light sources, the LED light sources are arranged in the light source through holes in a protruding mode, the diffusion plate is arranged on an opening defined by the four inclined planes, and the optical diaphragm group is arranged on the; the optical film group comprises a quantum film, a composite film, a DBEF film and a diffusion sheet, wherein the diffusion sheet, the DBEF film, the composite film and the quantum film are sequentially stacked from top to bottom, and the quantum film is arranged on the diffusion plate.
Preferably, the quantum film comprises an upper base film, a quantum dot layer and a lower base film, wherein the upper base film, the quantum dot layer and the lower base film are sequentially stacked from top to bottom.
Preferably, the upper and lower base films each have a thickness in the range of 124.5-125.5 microns, and the quantum dot layer has a thickness in the range of 74-76 microns.
Preferably, the composite film is a prism sheet, the prism sheet comprises a PET base layer and a prism structure layer arranged on the PET base layer, and a plurality of prism stripes are arranged on the prism structure layer at intervals.
Preferably, the edge angle of two adjacent prism stripes is 90 degrees.
Preferably, the edge angle of two adjacent prism stripes is 93 degrees.
Preferably, the number of lamp strips is a plurality of, and a plurality of lamp strips set up along planar long limit direction parallel.
Preferably, the reflecting sheet is made of PET material, the diffusion plate is made of PS material, and the diffusion sheet is made of PET material.
(III) advantageous effects
Compared with the prior art, the invention provides a backlight structure capable of improving the color gamut, which has the following beneficial effects: (1) by arranging the quantum film, the color gamut can be correspondingly improved, and the watching taste of the liquid crystal display device is improved; (2) through setting up complex film and DBEF membrane, can carry out the secondary brightening to the light source, promote liquid crystal display device's luminance promptly.
Drawings
FIG. 1 is a schematic cross-sectional view of a backlight structure capable of improving color gamut according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a quantum film in an embodiment of a backlight structure capable of improving color gamut according to the present invention.
In the figure: 1 reflector plate, 11 planes, 12 inclined planes, 2 lamp strips, 21LED light sources, 3 diffuser plates, 4 optical film groups, 41 quantum films, 411 upper base films, 412 quantum dot layers, 413 lower base films, 42 composite films, 43DBEF films and 44 diffuser plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the backlight structure capable of increasing the color gamut according to the present invention includes: reflector plate 1, lamp strip 2, diffuser plate 3 and optical film group 4. The reflector plate 1 comprises a plane 11 and four inclined planes 12, wherein the plane 11 is rectangular, the four inclined planes 12 are respectively formed by extending four edges of the plane 11 obliquely upwards, and included angles between the four inclined planes 12 and the plane 11 are larger than 0 degree and smaller than 90 degrees; specifically, the material of the reflection sheet 1 is a resin material such as PET. The light bar 2 comprises a plurality of blue light emitting LED light sources 21, the plane 11 is provided with a plurality of light source through holes (not shown) with the same number of the LED light sources 21, and the LED light sources 21 are convexly arranged in the light source through holes; in addition, the number of the light bars 2 can be multiple, and the light bars 2 are arranged in parallel along the long side direction of the plane 11, so that the total number of the light source through holes of the plane 11 of the reflector plate 1 is matched with the number of the LED light sources 21 of the light bars 2. The diffuser plate 3 is disposed on the opening defined by the four inclined planes 12 of the reflector plate 1, that is, the diffuser plate 3 is located above the light bar 2, and the diffuser plate 3 may be made of PS (polystyrene) material.
The optical film set 4 is disposed on the diffusion plate 3, that is, the optical film set 4 is disposed on a side of the diffusion plate 3 opposite to the light bar 2. The optical film group 4 includes a quantum film 41, a composite film 42, a DBEF film 43, and a diffusion sheet 44, wherein the diffusion sheet 44, the DBEF film 43, the composite film 42, and the quantum film 41 are sequentially stacked from top to bottom, and the quantum film 41 is disposed on the diffusion plate 3.
Specifically, the Quantum film 41 includes an upper base film 411, a Quantum Dot (QD) layer 412 and a lower base film 413, wherein the upper base film 411, the Quantum dot layer 412 and the lower base film 413 are sequentially stacked from top to bottom, the upper base film 411 and the lower base film 413 are also called barrier (barrier) layers, the Quantum dot layer 412 includes a plurality of Quantum dots, the Quantum dots are inorganic efficient phosphorescent crystal particles with a diameter of 1-10nm, the Quantum dots with a diameter of about 5nm can emit green light after being excited by blue light, the Quantum dots with a diameter of about 7nm can emit red light after being excited by blue light, and the generated red light or green light and the blue light directly passing through the Quantum film 41 are mixed to form white light with a very high color gamut. The NTSC color gamut of the backlight structure of the present invention is about 102% as measured by a luminance meter. Preferably, the thickness of the upper base film 411 and the lower base film 413 is 124.5-125.5 microns, and the thickness of the quantum dot layer 412 is 74-76 microns, i.e. the overall thickness of the quantum film 41 is 323-327 microns.
Specifically, the composite film 42 is a prism sheet for brightness enhancement, and the prism sheet includes a PET base layer (not shown) and a prism structure layer (not shown) disposed on the PET base layer, and the prism structure layer is made of acrylic resin, and it can be understood that the PET base layer is disposed on the upper base film 411 of the quantum film 41, wherein the prism structure layer is disposed at intervals with a plurality of prism stripes (not shown). The angle of the prism sheet may be set according to the angle of the adjacent stripe structure on the polarizer disposed at the rear side of the liquid crystal display panel, for example, the angle of the two adjacent prism stripes of the prism sheet is set to 90 degrees or 93 degrees, or may be set to other angles such as 0 degree or 45 degrees, which is not limited herein.
The DBEF (dual Brightness Enhancement film) film 43 is a reflective polarization Brightness Enhancement film, and the DBEF film 43 is an optical film formed by compounding multiple layers of polymer materials and having a function of generating high-efficiency polarized light, so that the utilization rate of light can be improved, and the axial Brightness of the backlight system can be increased. The diffuser 44 may uniformly diffuse the light source and protect the DBEF film 43, and the diffuser 44 may be a PET material.
The working principle of the backlight structure of the invention is as follows: the LED light source 21 emitting blue light reflects light to the diffusion plate 3 above through the reflection sheet 1; the diffusion plate 3 uniformly diffuses and atomizes the light emitted by the light bar 2, the uniformity is improved, the light is concentrated to the front from small-angle emergent light, the front luminance is improved, and meanwhile, the diffusion plate 3 structurally plays a role in supporting a cavity; then, the light passes through the quantum film 41 of the optical film group 4, and the quantum film 41 converts the blue light into white light to be emitted; white light emitted from the quantum film 41 is first brightened by the composite film 42, then the light source is second brightened by the DBEF film 43 to further improve brightness, and finally the light source is uniformly diffused by the diffusion sheet 44.
It can be understood that the backlight structure capable of improving the color gamut of the invention has the following beneficial effects: (1) by arranging the quantum film 41, the color gamut can be correspondingly improved, and the watching taste of the liquid crystal display device is improved; (2) by arranging the composite film 42 and the DBEF film 43, the light source can be brightened for the second time, that is, the brightness of the liquid crystal display device can be improved.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A backlight structure capable of improving color gamut, comprising: the LED backlight module comprises a reflecting sheet, a light bar, a diffusion plate and an optical diaphragm group, wherein the reflecting sheet comprises a plane and four inclined planes, the plane is rectangular, the four inclined planes are formed by obliquely and upwardly extending four edges of the plane respectively, the light bar comprises a plurality of LED light sources emitting blue light, the plane is provided with a plurality of light source through holes with the same number of the LED light sources, the LED light sources are convexly arranged in the light source through holes, the diffusion plate is arranged on an opening defined by the four inclined planes, and the optical diaphragm group is arranged on the diffusion plate;
the optical film group comprises a quantum film, a composite film, a DBEF film and a diffusion sheet, wherein the diffusion sheet, the DBEF film, the composite film and the quantum film are sequentially stacked from top to bottom, and the quantum film is arranged on the diffusion plate.
2. The backlight structures defined in claim 1 wherein: the quantum film comprises an upper base film, a quantum dot layer and a lower base film, wherein the upper base film, the quantum dot layer and the lower base film are sequentially stacked from top to bottom.
3. The backlight structures defined in claim 2 wherein: the thickness of the upper basement membrane and the lower basement membrane is in the range of 124.5-125.5 microns, and the thickness of the quantum dot layer is in the range of 74-76 microns.
4. The backlight structures defined in claim 1 wherein: the composite film is a prism sheet, the prism sheet comprises a PET base layer and a prism structure layer arranged on the PET base layer, and a plurality of prism stripes are arranged on the prism structure layer at intervals.
5. The backlight structures defined in claim 4 wherein: the edge angle of two adjacent prism stripes is 90 degrees.
6. The backlight structures defined in claim 4 wherein: the edge angle of two adjacent prism stripes is 93 degrees.
7. The backlight structures defined in claim 1 wherein: the quantity of lamp strip is a plurality of, and is a plurality of the lamp strip is followed planar long limit direction parallel arrangement.
8. The backlight structures defined in claim 1 wherein: the reflector plate is made of PET (polyethylene terephthalate), the diffuser plate is made of PS (polystyrene), and the diffuser plate is made of PET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911001624.4A CN112764263A (en) | 2019-10-21 | 2019-10-21 | Backlight structure capable of improving color gamut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911001624.4A CN112764263A (en) | 2019-10-21 | 2019-10-21 | Backlight structure capable of improving color gamut |
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| Publication Number | Publication Date |
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| CN112764263A true CN112764263A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911001624.4A Pending CN112764263A (en) | 2019-10-21 | 2019-10-21 | Backlight structure capable of improving color gamut |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985655A (en) * | 2021-10-22 | 2022-01-28 | 珠海市科弥光电有限公司 | Backlight module for television based on optical composite film |
| CN115167031A (en) * | 2022-06-15 | 2022-10-11 | 湖南鸿阳光电科技有限公司 | Liquid crystal television MINI quantum dot backlight module |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162325A (en) * | 2007-11-26 | 2008-04-16 | 上海广电光电子有限公司 | Directly-down back light module unit |
| CN102818193A (en) * | 2012-08-20 | 2012-12-12 | 创维液晶器件(深圳)有限公司 | Direct type LED (light emitting diode) backlight module and display device of direct type LED backlight module |
| CN202813036U (en) * | 2012-07-10 | 2013-03-20 | Tcl光电科技(惠州)有限公司 | Direct down type backlight module and liquid crystal display device |
| CN101236265B (en) * | 2006-12-12 | 2013-10-02 | 三星显示有限公司 | Optical sheet and method for fabricating the same |
| CN105242453A (en) * | 2015-10-15 | 2016-01-13 | 广州创维平面显示科技有限公司 | Direct illumination-type backlight module and liquid crystal display device |
| CN106299054A (en) * | 2015-05-18 | 2017-01-04 | 青岛海信电器股份有限公司 | A kind of quantum dot light emitting element, backlight module and display device |
| CN206479658U (en) * | 2016-09-05 | 2017-09-08 | 宁波激智科技股份有限公司 | A kind of MULTILAYER COMPOSITE blooming piece |
| CN108303822A (en) * | 2018-01-23 | 2018-07-20 | 青岛海信电器股份有限公司 | A kind of backlight module, display device and LCD TV |
-
2019
- 2019-10-21 CN CN201911001624.4A patent/CN112764263A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236265B (en) * | 2006-12-12 | 2013-10-02 | 三星显示有限公司 | Optical sheet and method for fabricating the same |
| CN101162325A (en) * | 2007-11-26 | 2008-04-16 | 上海广电光电子有限公司 | Directly-down back light module unit |
| CN202813036U (en) * | 2012-07-10 | 2013-03-20 | Tcl光电科技(惠州)有限公司 | Direct down type backlight module and liquid crystal display device |
| CN102818193A (en) * | 2012-08-20 | 2012-12-12 | 创维液晶器件(深圳)有限公司 | Direct type LED (light emitting diode) backlight module and display device of direct type LED backlight module |
| CN106299054A (en) * | 2015-05-18 | 2017-01-04 | 青岛海信电器股份有限公司 | A kind of quantum dot light emitting element, backlight module and display device |
| CN105242453A (en) * | 2015-10-15 | 2016-01-13 | 广州创维平面显示科技有限公司 | Direct illumination-type backlight module and liquid crystal display device |
| CN206479658U (en) * | 2016-09-05 | 2017-09-08 | 宁波激智科技股份有限公司 | A kind of MULTILAYER COMPOSITE blooming piece |
| CN108303822A (en) * | 2018-01-23 | 2018-07-20 | 青岛海信电器股份有限公司 | A kind of backlight module, display device and LCD TV |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985655A (en) * | 2021-10-22 | 2022-01-28 | 珠海市科弥光电有限公司 | Backlight module for television based on optical composite film |
| CN113985655B (en) * | 2021-10-22 | 2023-04-07 | 珠海市科弥光电有限公司 | Backlight module for television based on optical composite film |
| CN115167031A (en) * | 2022-06-15 | 2022-10-11 | 湖南鸿阳光电科技有限公司 | Liquid crystal television MINI quantum dot backlight module |
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