CN107515491B - Quantum dot backlight module and reflector plate thereof - Google Patents
Quantum dot backlight module and reflector plate thereof Download PDFInfo
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- CN107515491B CN107515491B CN201710854378.1A CN201710854378A CN107515491B CN 107515491 B CN107515491 B CN 107515491B CN 201710854378 A CN201710854378 A CN 201710854378A CN 107515491 B CN107515491 B CN 107515491B
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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
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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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a quantum dot backlight module and a reflector plate thereof, wherein the reflector plate comprises a substrate and a fluorescent powder adhesive tape attached to the substrate, at least one part of the substrate is provided with a plurality of through holes, the fluorescent powder adhesive tape comprises a substrate and a fluorescent powder adhesive layer arranged on the substrate, the fluorescent powder adhesive layer is exposed out of the through holes, and the fluorescent powder and light rays emitted by an LED light source are complementarily excited to form light rays with colors required to be compensated in a color cast area of the backlight module. Because the fluorescent powder glue film of the fluorescent powder adhesive tape is exposed from the through hole and excited by the LED light source, light rays with colors required to be compensated in the color cast area of the backlight module are generated, and after the light rays are mixed with other light rays, the color cast of the other light rays is compensated, and the problem of color cast around the display is solved. Meanwhile, ink does not need to be printed on the reflector plate, and only the fluorescent powder adhesive tape needs to be provided, so that the instability of a printing process is avoided, and the consistency of the subjective effect of the product is ensured.
Description
Technical Field
The invention relates to the technical field of display, in particular to a quantum dot backlight module and a reflector plate thereof.
Background
The LED backlight module includes a direct type backlight module and a side type backlight module, and since the liquid crystal panel does not emit light, a backlight is required to provide a light source. Under the secondary optical treatment of the lens, the light emitted by the direct type backlight module LED is reflected by the reflecting sheet, atomized by the diffusion plate, and finally emitted out of a uniform light source after passing through the optical films such as the prism sheet and the brightness enhancement film, and is provided for the liquid crystal panel. Light emitted by the side-in type backlight module LED passes through the light guide plate, passes through the prism sheet, the brightness enhancement film and other optical films, and finally emits a uniform light source to be provided for the liquid crystal panel.
At the present stage, the requirement of users on the image quality of the television is higher and higher, and the color gamut of the television is greatly improved by applying the quantum dot technology, so that the amazing color expressive force is shown. Compared with the traditional television, the quantum dot television is additionally provided with a quantum film with red and green quantum dots at the backlight position, and white light is shown by excitation of a blue light lamp. Specifically, for the lateral backlight module, the reflector plates are respectively attached to the upper side and the left and right side faces of the light guide plate so as to improve the light utilization rate, incident light rays are gathered on the reflector plates due to the diffuse reflection effect of the reflector plates after entering the light guide plate, and then the phenomenon of lightening is generated, and the lightening area is blue due to the fact that the incident light rays are blue light rays. For the direct type backlight module, the LED light sources are arranged in a direct type manner below the diffusion plate, the peripheral LED light sources are usually far away from the periphery of the module, light rays reach the periphery of the module by virtue of reflection of the folded edges of the reflector plate, but the reflection effect is limited and limited by the light emitting angle of the lens, the light rays at the periphery of the module can be weaker than those in other display areas, in a quantum dot product, the phenomenon is shown that the peripheral blue light intensity is weaker than that of other display positions, and after the quantum dot product is excited, the color cast phenomenon of the peripheral yellowing edges is generated. Therefore, in actual production, no matter the side-in product or the direct-type product has the phenomenon of color cast all around, the existing solution is as follows:
1. side-entering quantum dot product: and (3) printing complementary color fluorescent powder on the reflecting sheet at the corresponding position of the color cast area, for example, printing yellow fluorescent powder by adopting a blue LED (light emitting diode), and exciting the complementary color fluorescent powder by a light source to form yellow light, so that the emission quantity of blue light is reduced, and the problem that the periphery of a display picture is blue is solved.
2. Direct type quantum dot product: and (3) printing complementary color fluorescent powder on the reflecting sheet at the corresponding position of the color cast area, for example, printing blue fluorescent powder by adopting a blue LED, and exciting to form blue light so as to increase the intensity of the blue light around, reduce the emission of yellow light and further solve the problem that the periphery of a display picture is yellow.
However, the method of solving the color cast around the quantum film product at the edge of the ink printed reflector plate has the defect of poor printing stability, for example, for the same batch of products, some products are printed with thicker ink, and other products are printed with thinner ink, so that the subjective effect of the same batch of products fluctuates, and the consistency is poor.
Disclosure of Invention
The invention provides a quantum dot backlight module and a reflector plate thereof, which can solve the problem of uneven color around a display picture and ensure the consistency of subjective effects of products.
In order to solve the above problems, a first aspect of the present invention discloses a reflector plate applied to a quantum dot backlight module, where the reflector plate includes a substrate and a phosphor adhesive tape attached to the substrate, at least a part of the substrate is provided with a plurality of through holes, the phosphor adhesive tape includes a substrate and a phosphor adhesive layer disposed on the substrate, the phosphor adhesive layer is exposed from the through holes, and the phosphor and light emitted by an LED light source are complementarily excited to form light of a color to be compensated in a color cast region of the backlight module.
Optionally, the substrate is made of a light-shielding material.
Optionally, the light-shielding material is black.
Optionally, the phosphor adhesive tape is attached to the whole area of the substrate or the phosphor adhesive tape is attached to the area of the substrate where the through hole is formed.
Optionally, the shape of the through hole is one of rectangular, circular and oval.
The second aspect discloses a preparation method of a reflector plate applied to a quantum dot backlight module, which comprises the following steps.
Forming a plurality of through holes in at least one part of the area of the substrate of the reflector plate;
the area of the substrate corresponding to the through hole is pasted with a fluorescent powder adhesive tape, the fluorescent powder adhesive tape is formed by coating a mixture of fluorescent powder and adhesive on a base material and drying the mixture, and the fluorescent powder and light rays emitted by an LED light source are complementarily excited to form light rays of colors required to be compensated in a color cast area of the backlight module; and exposing the fluorescent powder adhesive layer from the through hole.
The third aspect discloses a direct type quantum dot backlight module, which comprises an LED light source, a quantum dot film and a reflector plate, wherein the LED light source is arranged on the reflector plate, the quantum dot film is arranged above the LED light source,
the reflecting sheet is provided with a plurality of through holes at positions corresponding to the color cast area of the backlight module, one surface of the reflecting sheet, which faces away from the LED light source, is pasted with a fluorescent powder adhesive tape, one surface of the fluorescent powder adhesive tape, which is provided with fluorescent powder, is exposed from the through holes, and the fluorescent powder and light rays emitted by the LED light source are complementarily excited to form light rays with colors required to be compensated by the color cast area of the backlight module.
The fourth aspect discloses a lateral-entering quantum dot backlight module, which comprises an LED light source, a light guide plate, a quantum dot film and a reflector plate, wherein the light guide plate comprises a light-in surface, a reflecting surface and a light-out surface, the LED light source is positioned on the light-in surface of the light guide plate, the reflector plate is positioned on the reflecting surface of the light guide plate, the quantum dot film is positioned on the light-out surface of the light guide plate,
the reflecting sheet is provided with a plurality of through holes at positions corresponding to the color cast area of the backlight module, one surface of the reflecting sheet, which faces away from the reflecting surface of the light guide plate, is pasted with a fluorescent powder adhesive tape, one surface of the fluorescent powder adhesive tape, which is provided with fluorescent powder, is exposed from the through holes, and the fluorescent powder and light rays emitted by the LED light source are complementarily excited to form light rays with colors required to be compensated by the color cast area of the backlight module.
The fifth aspect discloses a liquid crystal television, which comprises the direct type quantum dot backlight module or the side type quantum dot backlight module.
Compared with the prior art, the invention has the following advantages: through opening the through hole in the reflector plate and the position that the color cast region of backlight unit corresponds to paste on the reflector plate and establish the phosphor powder sticky tape, make the phosphor powder glue film of phosphor powder sticky tape expose from the through hole, the light complementary excitation that this phosphor powder and LED light source sent forms the light with the required compensation's of color cast region colour. Because the fluorescent powder glue film of the fluorescent powder adhesive tape is exposed from the through hole and excited by the LED light source, light rays with colors required to be compensated in the color cast area of the backlight module are generated, and after the light rays are mixed with other light rays, the color cast of the other light rays is compensated, and the problem of color cast around the display is solved. Meanwhile, ink does not need to be printed on the reflector plate, and only the fluorescent powder adhesive tape needs to be provided, so that the instability of a printing process is avoided, and the consistency of the subjective effect of the product is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a reflector according to an embodiment of the invention;
FIG. 2 is a flow chart of a method for making a reflector plate according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a direct type quantum dot backlight module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a lateral quantum dot backlight module according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, which is a schematic structural diagram of a reflector according to an embodiment of the present invention, the reflector is applied to a quantum dot backlight module, the backlight module may be a direct type backlight module or an edge type backlight module, and the positions corresponding to the reflectors may be set according to the positions generating color cast.
The reflector plate comprises a substrate 11 and a fluorescent powder adhesive tape 12 attached to the substrate, wherein the substrate can be made of a PET film added with oxygen compounds such as titanium dioxide and the like, which is commonly used in the prior art, the fluorescent powder adhesive tape comprises a base material 13 and an adhesive layer coated on the base material, fluorescent powder particles are mixed in the adhesive layer, and the adhesive layer mixed with the fluorescent powder particles is called a fluorescent powder adhesive layer 14. The fluorescent powder adopts light rays which are complementary to light emitted by the LED light source and excite to form a color required to be compensated in a color cast area of the backlight module, for example, if the color required to be compensated in the color cast area is yellow, and the LED is a blue light LED chip, the yellow fluorescent powder is adopted, so that the blue light excites the yellow fluorescent powder to generate yellow light. If the color to be compensated in the color cast region is blue and the LED is a blue LED chip, the blue fluorescent powder is adopted to enable the blue fluorescent powder to excite the blue fluorescent powder to generate blue light.
According to the position of the backlight module for generating color cast, a plurality of through holes 15 are formed in the positions, corresponding to the substrate, of the reflecting sheet, and after the fluorescent powder adhesive tape is attached to the substrate, the fluorescent powder adhesive layer is exposed from the through holes, so that light rays emitted by the LED can irradiate the fluorescent powder to generate exciting light.
The shape of the through hole is one of rectangle, circle and ellipse. The size and distribution of the through holes can be designed according to the strength of color cast and the actual result of optical simulation.
In one embodiment of the present invention, the base material of the phosphor tape is selected from materials having a light shielding effect, such as black mylar, to ensure the excitation effect of the phosphor particles.
Fig. 2 is a flowchart of a method for manufacturing a reflective sheet according to an embodiment of the invention, which includes the following steps.
And S21, forming a plurality of through holes in at least one part of the area of the substrate of the reflector plate.
And S22, pasting a fluorescent powder adhesive tape in the area of the substrate corresponding to the through hole, wherein the fluorescent powder adhesive tape is formed by coating a mixture of fluorescent powder and adhesive on the substrate and drying the mixture, and the fluorescent powder adhesive layer is exposed from the through hole.
Specifically, the phosphor adhesive tape may be attached to the entire substrate, or may be attached only to a region of the substrate where the through hole is formed, as long as the phosphor adhesive tape can be exposed from the through hole.
The phosphor adhesive tape may be prepared in advance in substantially the same manner as a commonly used adhesive tape except that phosphor particles of a desired color are mixed in the adhesive layer.
Example 1:
fig. 3 is a schematic structural diagram of a direct-type quantum dot backlight module according to an embodiment of the invention. The backlight module comprises an LED light source 31, a quantum dot film 32 and a reflector plate 33, wherein the LED light source is arranged on the reflector plate, and the quantum dot film is arranged above the LED light source.
The reflecting sheet is provided with a plurality of through holes at positions corresponding to the color cast area of the backlight module, one surface of the reflecting sheet, which faces away from the LED light source, is pasted with a fluorescent powder adhesive tape, one surface of the fluorescent powder adhesive tape, which is provided with fluorescent powder, is exposed from the through holes, and the fluorescent powder and light rays emitted by the LED light source are complementarily excited to form light rays of colors required to be compensated by the color cast area of the backlight module. Specifically, because the direct type quantum dot backlight module has a yellow phenomenon around the display, the complementary color of yellow, that is, blue light, needs to be compensated, and therefore if a blue LED is used, the blue phosphor is selected as the phosphor to excite the blue LED to form blue light.
The direct type backlight module generally generates color cast at the peripheral edge, and because the back plate of the direct type backlight module comprises a bottom plate 34 which is a horizontal plane and a side plate 35 which is inclined to the bottom plate, the reflector plate is laid on the bottom plate and the side plate, wherein the reflector plate positioned on the side plate corresponds to the peripheral edge of the backlight module, the position of the reflector plate corresponding to the color cast area of the backlight module in the embodiment refers to the reflector plate laid on the side plate, and the color cast area can be specifically set according to the actual display effect.
Example 2:
fig. 4 is a schematic structural diagram of a lateral quantum dot backlight module according to an embodiment of the invention. The backlight module comprises an LED light source 41, a light guide plate 42, a quantum dot film 43 and a reflection sheet 44, wherein the light guide plate comprises a light incident surface 45, a reflection surface 46 and a light emergent surface 47, the LED light source is positioned on the light incident surface of the light guide plate, the reflection sheet is positioned on the reflection surface of the light guide plate, and the quantum dot film is positioned on the light emergent surface of the light guide plate.
The reflection sheet of this embodiment is substantially the same as embodiment 1, a plurality of through holes are opened at positions corresponding to the color cast regions of the backlight module, a phosphor adhesive tape is attached to a surface of the reflection sheet facing away from the reflection surface of the light guide plate, and a surface of the phosphor adhesive tape having phosphor is exposed from the through holes.
Specifically, since the lateral quantum dot backlight module exhibits a bluish phenomenon around the display, it is necessary to compensate the complementary color of blue, i.e., yellow light, so that if a blue LED is used, the phosphor is selected from yellow phosphors to excite the blue LED to form yellow light.
The lateral-entering quantum dot backlight module generally generates color cast at the peripheral edge, so that the positions of the reflector plate and the color cast region of the backlight module in the embodiment refer to the peripheral edge of the reflector plate, and the lateral-entering quantum dot backlight module can be specifically set according to the actual display effect.
Through arranging the through hole at the position of the reflector plate corresponding to the color cast area of the backlight module and pasting the fluorescent powder adhesive tape on the reflector plate, the fluorescent powder adhesive layer of the fluorescent powder adhesive tape is exposed out of the through hole, and the fluorescent powder and the light emitted by the LED light source are complementarily excited to form light of a color required to be compensated by the color cast area of the backlight module, so that the problem of color cast all around is solved. Meanwhile, ink does not need to be printed on the reflector plate, and only the fluorescent powder adhesive tape needs to be provided, so that the instability of a printing process is avoided, and the consistency of the subjective effect of the product is ensured.
The invention also provides a liquid crystal television which comprises a direct type quantum dot backlight module or a side type quantum dot backlight module provided with the reflector plate.
The present invention has been described in detail, and the principle and embodiments of the present invention are explained herein by using specific examples, which are only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A direct type quantum dot backlight module comprises:
the LED light source is arranged on the reflector plate, the quantum dot film is arranged above the LED light source,
the method is characterized in that: the reflecting sheet is provided with a plurality of through holes at positions corresponding to the color cast area of the backlight module, one surface of the reflecting sheet, which faces away from the LED light source, is pasted with a fluorescent powder adhesive tape, one surface of the fluorescent powder adhesive tape, which is provided with fluorescent powder, is exposed from the through holes, and the fluorescent powder and light rays emitted by the LED light source are complementarily excited to form light rays with colors required to be compensated by the color cast area of the backlight module;
the reflector plate comprises a substrate and a fluorescent powder adhesive tape attached to the substrate, the fluorescent powder adhesive tape comprises a base material and a fluorescent powder adhesive layer arranged on the base material, and the fluorescent powder adhesive layer is exposed out of the through hole.
2. A lateral-type quantum dot backlight module comprises:
the LED light source is positioned on the light incoming surface of the light guide plate, the reflector plate is positioned on the reflection surface of the light guide plate, the quantum dot film is positioned on the light outgoing surface of the light guide plate, and the reflection surface is opposite to the light outgoing surface;
the method is characterized in that:
the reflecting sheet is provided with a plurality of through holes at positions corresponding to the color cast area of the backlight module, one surface of the reflecting sheet, which faces away from the reflecting surface of the light guide plate, is pasted with a fluorescent powder adhesive tape, one surface of the fluorescent powder adhesive tape, which is provided with fluorescent powder, is exposed from the through holes, and the fluorescent powder and light rays emitted by the LED light source are complementarily excited to form light rays with colors required to be compensated by the color cast area of the backlight module;
the reflector plate comprises a substrate and a fluorescent powder adhesive tape attached to the substrate, the fluorescent powder adhesive tape comprises a base material and a fluorescent powder adhesive layer arranged on the base material, and the fluorescent powder adhesive layer is exposed out of the through hole.
3. A backlight module according to claim 1 or 2, characterized in that: the base material is made of a light-shielding material.
4. A backlight module according to claim 3, wherein: the light-shielding material is black.
5. A backlight module according to claim 1 or 2, characterized in that: the fluorescent powder adhesive tape is attached to the whole area of the substrate or the area of the substrate provided with the through hole.
6. A backlight module according to claim 1 or 2, characterized in that: the shape of the through hole is one of rectangle, circle and ellipse.
7. A preparation method of a reflector plate applied to a quantum dot backlight module is characterized by comprising the following steps: forming a plurality of through holes in at least one part of the area of the substrate of the reflector plate; the area of the substrate corresponding to the through hole is pasted with a fluorescent powder adhesive tape, the fluorescent powder adhesive tape is formed by coating a mixture of fluorescent powder and adhesive on a base material and drying the mixture, and the fluorescent powder and light rays emitted by an LED light source are complementarily excited to form light rays of colors required to be compensated in a color cast area of the backlight module; and exposing the fluorescent powder adhesive layer from the through hole.
8. A liquid crystal television, characterized in that: comprising a backlight module as claimed in any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710854378.1A CN107515491B (en) | 2017-09-20 | 2017-09-20 | Quantum dot backlight module and reflector plate thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710854378.1A CN107515491B (en) | 2017-09-20 | 2017-09-20 | Quantum dot backlight module and reflector plate thereof |
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| CN107515491A CN107515491A (en) | 2017-12-26 |
| CN107515491B true CN107515491B (en) | 2020-08-14 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389472A (en) * | 2018-04-19 | 2019-10-29 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and display device |
| CN108873483A (en) * | 2018-08-16 | 2018-11-23 | 京东方科技集团股份有限公司 | A kind of production method of backlight module, display device and backlight module |
| CN108983499A (en) * | 2018-09-19 | 2018-12-11 | 武汉华星光电技术有限公司 | Backlight module |
| CN110673395A (en) * | 2019-10-11 | 2020-01-10 | 深圳创维－Rgb电子有限公司 | Reflector plate manufacturing method, reflector plate and backlight module |
| CN111948853A (en) * | 2020-08-20 | 2020-11-17 | 安徽芯瑞达科技股份有限公司 | Side-in high color gamut LED module for backlight field |
| CN113759610A (en) * | 2021-10-19 | 2021-12-07 | 福建华佳彩有限公司 | High-color gamut display framework |
| CN115826291A (en) * | 2022-11-22 | 2023-03-21 | 合肥鑫晟光电科技有限公司 | Backlight module, display module and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09152607A (en) * | 1995-03-01 | 1997-06-10 | Toshiba Lighting & Technol Corp | Illumination device and display device |
| CN104061496A (en) * | 2014-05-29 | 2014-09-24 | 瑞仪光电股份有限公司 | Backlight module |
-
2017
- 2017-09-20 CN CN201710854378.1A patent/CN107515491B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09152607A (en) * | 1995-03-01 | 1997-06-10 | Toshiba Lighting & Technol Corp | Illumination device and display device |
| CN104061496A (en) * | 2014-05-29 | 2014-09-24 | 瑞仪光电股份有限公司 | Backlight module |
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| Publication number | Publication date |
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| CN107515491A (en) | 2017-12-26 |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant after: Hisense Video Technology Co., Ltd Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant before: HISENSE ELECTRIC Co.,Ltd. |
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