CN217238570U - Quantum dot composite membrane, backlight module and display device - Google Patents
Quantum dot composite membrane, backlight module and display device Download PDFInfo
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- CN217238570U CN217238570U CN202221136910.9U CN202221136910U CN217238570U CN 217238570 U CN217238570 U CN 217238570U CN 202221136910 U CN202221136910 U CN 202221136910U CN 217238570 U CN217238570 U CN 217238570U
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Abstract
The application provides a compound diaphragm of quantum dot, backlight unit and display device, the compound diaphragm of quantum dot is applied to straight following formula backlight unit, and it includes: a quantum dot thin film layer; the prism sheet is arranged on one side of the quantum dot thin film layer; the micro lens film is arranged on one side, back to the quantum dot thin film layer, of the prism sheet; the diffusion layer is arranged on one side, back to the prism sheet, of the quantum dot thin film layer; wherein, the diffusion layer, the quantum dot film layer, the prism sheet and the micro-lens film are compounded into a whole. This application is passed through diffusion layer, quantum dot thin layer, prism piece and the compound integrative that forms of microlens membrane for the compound diaphragm of quantum dot can assemble as a whole, and then can simplify backlight unit and display device's equipment process in order to improve production efficiency.
Description
Technical Field
The application relates to the technical field of display, in particular to a direct type quantum dot backlight composite film, a backlight module and a display device.
Background
The film frame of the direct-type quantum dot backlight module in the industry at present is mainly assembled by sequentially stacking optical films such as a diffusion plate, a quantum dot film, a brightness enhancement film and a diffusion sheet. However, the optical films are of various types, so that the assembly process is complicated and the production efficiency is low. Therefore, how to design a direct-type quantum dot backlight film and simplify the assembly process becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a quantum dot composite membrane, backlight module and display device, forms an organic whole through diffusion layer, quantum dot thin layer, prism piece and microlens membrane complex for quantum dot composite membrane can assemble as a whole.
In a first aspect, an embodiment of the present application provides a quantum dot composite film, which is applied to a direct type backlight module, and includes:
a quantum dot thin film layer;
the prism sheet is arranged on one side of the quantum dot thin film layer;
the micro lens film is arranged on one side, back to the quantum dot thin film layer, of the prism sheet; and
the diffusion layer is arranged on one side, back to the prism sheet, of the quantum dot thin film layer;
wherein, the diffusion layer, the quantum dot film layer, the prism sheet and the micro-lens film are compounded into a whole.
In a second aspect, an embodiment of the present application provides a backlight module, which includes:
a back plate;
the reflector plate is arranged on the back plate;
the light sources are arranged on one side of the reflector plate back to the back plate; and
a quantum dot composite membrane;
the quantum dot composite membrane is arranged on one side, back to the backboard, of the light sources, and the diffusion layer of the quantum dot composite membrane is arranged at intervals with the light sources.
In a third aspect, an embodiment of the present application provides a display device, including:
a backlight module; and
a liquid crystal panel;
the micro-lens film of the backlight module is arranged towards the liquid crystal panel.
In the embodiment of the application, the diffusion layer, the quantum dot thin film layer, the prism sheet and the micro lens film are compounded into a whole, so that the quantum dot composite film can be assembled as a whole, and then the assembling process of the backlight module and the display device can be simplified to improve the production efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a quantum dot composite membrane provided in an embodiment of the present application.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Fig. 3 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are intended to be within the scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated is implicit.
Referring to fig. 1 and 2, an embodiment of the present disclosure provides a quantum dot composite film 200 applied to a direct-type backlight module, including a quantum dot film layer 240, a prism sheet 260, a microlens film 280, and a diffusion layer 220.
The prism sheet 260 is disposed on one side of the quantum dot thin film layer 240. The microlens film 280 is disposed on a side of the prism sheet 260 facing away from the quantum dot thin film layer 240. The diffusion layer 220 is disposed on the side of the quantum dot thin film layer 240 facing away from the prism sheet 260. The diffusion layer 220, the quantum dot thin film layer 240, the prism sheet 260, and the microlens film 280 are integrally formed.
It can be understood that, when the quantum dot backlight membrane provided by the embodiment of the application is applied to the direct type backlight module, the quantum dot backlight membrane with the corresponding size is formed by cutting the direct type backlight module to be assembled, and the quantum dot backlight membrane is directly assembled as a whole to complete the assembling process of the quantum dot backlight membrane. Therefore, in the assembly process of the direct type backlight module, compared with a mode that various optical films are sequentially stacked for assembly in the related art, the quantum dot backlight film provided by the embodiment of the application enables the assembly process to be simplified to a great extent.
It can be further understood that the quantum dot backlight film provided by the embodiment of the application can be used for assembling to form a backlight module, and then is assembled with a liquid crystal panel to form a display device. In the embodiment of the present application, the diffusion layer 220, the quantum dot thin film layer 240, the prism sheet 260, and the microlens film 280 are integrated, so that the quantum dot composite film 200 can be assembled as a whole, and the assembling process of the backlight module and the display device can be simplified to improve the production efficiency.
The prism sheet 260 and the microlens film 280 adjust the propagation direction of light, so that light in a large angle direction is reduced, light in a small angle direction is increased, more light is adjusted from the large angle direction to the small angle direction, and the front brightness is increased, that is, the light receiving is realized. The prism sheet 260 has a light-receiving effect stronger than that of the microlens film 280. The prism sheet 260 and the prism sheet 260 are stacked, and rainbow patterns may occur when assembled to form a display device. The prism sheet 260 and the microlens film 280 are stacked, and thus, not only can front brightness be ensured, but also large viewing angle brightness can be ensured not to be sacrificed too much.
In the structure of the display device, the side of the quantum dot backlight film facing away from the diffusion layer 220 is disposed close to the liquid crystal panel. If the prism sheet 260 is used as the outermost layer of the quantum dot backlight film, since the vertex of the light-emitting side of the prism sheet 260 is sharp, the prism sheet 260 may scratch the liquid crystal panel in the assembling process of the display device; if the top of the prism sheet 260 is chamfered to avoid scratching the liquid crystal panel, the process difficulty is increased and the light receiving effect of the prism sheet 260 is greatly reduced. In the quantum dot backlight module, the microlens film 280 is used as the outermost layer, and the microlens film 280 does not scratch the liquid crystal panel in the assembly process of the display device because the surface of the light-emitting side of the microlens film 280 is smooth.
In some embodiments, referring to fig. 1 and 2, the quantum dot composite film 200 further includes a first glue layer 230 and a second glue layer 250.
The first adhesive layer 230 is disposed between the quantum dot thin film layer 240 and the prism sheet 260, and is used for bonding the quantum dot thin film layer 240 and the prism sheet 260.
The second adhesive layer 250 is disposed between the prism sheet 260 and the micro lens film 280 for adhering the prism sheet 260 and the micro lens film 280.
It is understood that the first adhesive layer 230 and the second adhesive layer 250 may be film layers formed of photosensitive adhesives.
In some embodiments, referring to fig. 1 and 2, the diffusion layer 220 is a coating layer formed by adhering diffusion particles to the quantum dot thin film layer 240 through an adhesive.
It can be understood that the diffusion layer 220 is a coating layer formed by coating the quantum dot thin film layer 240 with diffusion particles and an adhesive in a uniform mixing manner.
It will be appreciated that the diffuser layer 220 serves to atomize incident light. The diffusion particles perform optical effects such as refraction, diffuse reflection and scattering on incident light, so that the incident light becomes more uniform, and the atomization point light source is realized.
It will be appreciated that the thickness of the diffusion layer 220 is less than the thickness of the diffusion plate. The thickness of the diffusion layer 220 is on the order of microns. The thickness of the diffuser plate is in the order of millimeters. The total thickness of the quantum dot composite membrane 200 manufactured by using the diffusion layer 220 is a first thickness. The total thickness of the diaphragm framework of the direct type quantum dot backlight module assembled by adopting the diffusion plate is the second thickness. The first thickness is between four molecules one of the second thickness and three molecules one of the second thickness.
Therefore, the display device assembled by the quantum dot composite film 200 fabricated by using the diffusion layer 220 has a smaller thickness than the display device assembled by the film frame of the direct type quantum dot backlight module assembled by using the diffusion plate.
In some embodiments, referring to fig. 1 and 2, the quantum dot film layer 240 includes a quantum dot material layer 242, a first PET layer 244, and a second PET layer 246. The quantum dot material layer 242 is a film layer formed by uniformly distributing the quantum dot material 2422 and the scattering particles 2424 in the colloid 2426. Illustratively, the gel is a photosensitive gel. The first PET layer 244 is disposed on one side of the quantum dot material layer 242. And a second PET layer 246 disposed on the other side of the quantum dot material layer 242. Wherein, the diffusion layer 220 is disposed on a side of the first PET layer 244 facing away from the quantum dot material layer 242; the side of the second PET layer 246 opposite to the quantum dot material layer 242 is provided with the first glue layer 230. It is understood that the first PET layer 244 and the second PET layer 246 serve as a protective layer for preventing the quantum dot material layer 242 from contacting moisture and oxygen from the outside. The first PET layer 244 serves as a support layer for adhering the diffusion layer 220.
It is understood that in a blue backlight, the quantum dot material 2422 is excited by blue light of a specific wavelength band to emit green light and red light. And green light and red light with specific wave bands can be obtained by adjusting the particle size of the quantum dots. When the quantum dot composite membrane 200 is applied to a backlight module, the color gamut range of the liquid crystal display device can be effectively improved.
It is understood that the photosensitive glue may be a methyl methacrylate glue.
In some embodiments, referring to fig. 1 and 2, the quantum dot material 2422 includes green quantum dots 2422b and red quantum dots 2422 a.
It can be understood that, under the blue backlight, the scattering particles 2424 scatter the incident blue backlight, so that the green quantum dots 2422b and the red quantum dots 2422a are more fully excited to excite the green light and the red light of a specific wavelength band excited by the green light and the red light of a specific wavelength band, and the green light and the red light are mixed with the transmitted blue light to form white light. Compared with a white backlight source adopted by a traditional liquid crystal display device, the liquid crystal display device of the quantum dot material layer 242 adopts a blue backlight source, and the color gamut can be greatly improved.
In some embodiments, referring to fig. 1 and 2, the prism sheet 260 includes a third PET layer 262 and a prism layer 264. The third PET layer 262 is disposed on a side of the first glue layer 230 opposite to the quantum dot material layer 242. The prism layer 264 is disposed on a side of the third PET layer 262 facing away from the quantum dot material layer 242; the side of the prism layer 264 facing away from the quantum dot material layer 242 is provided with the second glue layer 250. Wherein the prism layer 264 includes a plurality of prisms; the prism apexes are disposed opposite the third PET layer 262.
It is understood that the prism layer 264 may be formed by pressing a resin paste through a mold.
In some embodiments, a plurality of prisms are disposed in a display arrangement on the third PET layer 262. In other embodiments, a plurality of prisms are disposed on the third PET layer 262 in a random arrangement.
In some embodiments, referring to fig. 1 and 2, the microlens film 280 includes a fourth PET layer 282 and a microlens layer 284. The fourth PET layer 282 is disposed on a side of the second glue layer 250 opposite to the quantum dot material layer 242. The microlens layer 284 is disposed on a side of the fourth PET layer 282 facing away from the quantum dot material layer 242. The microlens layer 284 includes a plurality of lenses; the convex end of the lens is disposed opposite the fourth PET layer 282.
It will be appreciated that the microlens layer 284 may be a resin glue that is pressed through a die.
In some embodiments, a plurality of lenses are disposed in a display arrangement in the fourth PET layer 282. In other embodiments, a plurality of lenses are disposed in a random arrangement on the fourth PET layer 282.
It can be understood that, referring to fig. 1 and fig. 2, an embodiment of the present application further provides a backlight module, which includes a back plate 400, a reflective sheet 600, a plurality of light sources 800, and a quantum dot composite film 200. The reflective sheet 600 is disposed on the rear plate 400. The light sources 800 are disposed on a side of the reflective sheet 600 opposite to the back plate 400. The quantum dot composite film 200 is disposed on a side of the light sources 800 opposite to the back plate 400, and the diffusion layer 220 of the quantum dot composite film 200 is disposed at an interval from the light sources 800.
It can be understood that, referring to fig. 1 and 2, the diffusion layer 220 of the quantum dot composite film 200 is disposed at an interval from the plurality of light sources 800 to form the light mixing region 500.
In some embodiments, referring to fig. 3, the light sources 800 are LED lamps arranged in an array. The LED lamp is used for emitting blue light.
In some embodiments, referring to fig. 4, the present application further provides a display device 2 including a backlight module 20 and a liquid crystal panel 40. The microlens film 280 of the backlight module 20 is disposed toward the liquid crystal panel.
It will be appreciated that the first, second, third and fourth PET layers 244, 246, 262 and 282 are all made of PET substrate material. The english language for PET is all: polyethylene terephthalate, corresponding Chinese is: polyethylene terephthalate.
The quantum dot composite membrane, the backlight module and the display device provided by the embodiment of the application are introduced in detail, a specific example is applied in the description to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, 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 application.
Claims (10)
1. The utility model provides a compound diaphragm of quantum dot, is applied to straight following formula backlight unit, its characterized in that, it includes:
a quantum dot thin film layer;
the prism sheet is arranged on one side of the quantum dot film layer;
the micro lens film is arranged on one side, back to the quantum dot thin film layer, of the prism sheet; and
the diffusion layer is arranged on one side, back to the prism sheet, of the quantum dot thin film layer;
the diffusion layer, the quantum dot thin film layer, the prism sheet and the micro lens film are compounded into a whole.
2. The quantum dot composite membrane of claim 1, further comprising:
the first adhesive layer is arranged between the quantum dot thin film layer and the prism sheet and used for bonding the quantum dot thin film layer and the prism sheet; and
and the second adhesive layer is arranged between the prism sheet and the micro lens film and is used for bonding the prism sheet and the micro lens film.
3. The quantum dot composite film sheet according to claim 2, wherein the diffusion layer is a coating layer formed by adhering diffusion particles to the quantum dot thin film layer by an adhesive.
4. The quantum dot composite membrane of claim 3, wherein the quantum dot thin film layer comprises:
a layer of quantum dot material; the quantum dot material layer is a film layer formed by uniformly distributing quantum dot materials and scattering particles in colloid;
the first PET layer is arranged on one side of the quantum dot material layer; and
the second PET layer is arranged on the other side of the quantum dot material layer;
wherein the diffusion layer is arranged on one side of the first PET layer, which faces away from the quantum dot material layer; the first glue layer is arranged on one side, back to the quantum dot material layer, of the second PET layer.
5. The quantum dot composite membrane of claim 4, wherein the quantum dot material comprises green quantum dots and red quantum dots.
6. The quantum dot composite membrane of claim 4, wherein the prism sheet comprises:
the third PET layer is arranged on one side, back to the quantum dot material layer, of the first adhesive layer; and
a prism layer; the third PET layer is arranged on one side, back to the quantum dot material layer, of the third PET layer; the second adhesive layer is arranged on one side, back to the quantum dot material layer, of the prism layer;
wherein the prism layer comprises a plurality of prisms; the apex of the prism is disposed opposite the third PET layer.
7. The quantum dot composite membrane of any one of claims 4 to 6, wherein the microlens film comprises:
the fourth PET layer is arranged on one side, back to the quantum dot material layer, of the second adhesive layer; and
a microlens layer; the fourth PET layer is arranged on one side, back to the quantum dot material layer, of the fourth PET layer;
wherein the microlens layer comprises a plurality of lenses; the convex end of the lens is disposed opposite the fourth PET layer.
8. A backlight module, comprising:
a back plate;
the reflector plate is arranged on the back plate;
the light sources are arranged on one side, back to the back plate, of the reflector plate; and
a quantum dot composite membrane of any one of claims 1 to 7;
the quantum dot composite membrane is arranged on one side, back to the backboard, of the light sources, and the diffusion layer of the quantum dot composite membrane is arranged at intervals with the light sources.
9. The backlight module as claimed in claim 8, wherein the plurality of light sources are a plurality of LED lamps arranged in an array; the LED lamp is used for emitting blue light.
10. A display device, comprising:
a backlight module as claimed in any one of claims 8 to 9; and
a liquid crystal panel;
wherein the microlens film of the backlight module is disposed toward the liquid crystal panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221136910.9U CN217238570U (en) | 2022-05-11 | 2022-05-11 | Quantum dot composite membrane, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221136910.9U CN217238570U (en) | 2022-05-11 | 2022-05-11 | Quantum dot composite membrane, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217238570U true CN217238570U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221136910.9U Active CN217238570U (en) | 2022-05-11 | 2022-05-11 | Quantum dot composite membrane, backlight module and display device |
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| CN (1) | CN217238570U (en) |
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- 2022-05-11 CN CN202221136910.9U patent/CN217238570U/en active Active
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