CN219203186U - Luminous lamp panel, backlight module and liquid crystal display device - Google Patents
Luminous lamp panel, backlight module and liquid crystal display device Download PDFInfo
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- CN219203186U CN219203186U CN202320016239.2U CN202320016239U CN219203186U CN 219203186 U CN219203186 U CN 219203186U CN 202320016239 U CN202320016239 U CN 202320016239U CN 219203186 U CN219203186 U CN 219203186U
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Abstract
The application relates to the technical field of display, in particular to a light-emitting lamp panel, a backlight module and a liquid crystal display device, wherein the light-emitting lamp panel comprises: a driving substrate; the light-emitting chip is arranged on the driving substrate; the sealing adhesive layer surrounds the light-emitting chip and is arranged on the driving substrate, and a flat surface is formed on one side, far away from the driving substrate, of the sealing adhesive layer and the light-emitting chip; and a diffraction layer disposed over the planar surface. According to the light-emitting device, the sealing adhesive layer and the light-emitting chip are matched to form the flat surface, the diffraction layer is arranged on the flat surface to serve as a diffraction structure, and compared with a three-dimensional diffraction structure in the form of a grating and the like, the thickness of the light-emitting device is greatly reduced, the light mixing distance is reduced, the whole thickness of the light-emitting lamp panel is reduced, and the light-emitting device is favorable for meeting various size requirements of light-emitting products.
Description
Technical Field
The application relates to the technical field of display, in particular to a light-emitting lamp panel, a backlight module and a liquid crystal display device.
Background
In a light-emitting panel, such as a screen of various electronic products, a plurality of tiny light-emitting devices, such as light-emitting diodes, are arranged in an array, when the number of the light-emitting devices is enough, the light emitted by a single-point light source can be combined into a complete picture to form image content, so that in order to prevent the light emitted by each light-emitting device from being too concentrated to cause the brightness difference of the finally formed picture to be obvious, light spots or halos appear, and light mixing needs to be performed in the panel.
In the prior art, a diffraction structure such as a grating for mixing light is usually disposed on the light-emitting side of the light-emitting panel, and such a diffraction structure belongs to a three-dimensional structure, and besides a certain thickness, a certain light-mixing distance is required to be set aside, so that at least the following defects exist in the prior art: the thickness of the diffraction structure and the light mixing distance lead to the fact that the thickness of the light-emitting panel is larger, and the thickness design requirements of some small-size panels and ultrathin panels cannot be met.
Disclosure of Invention
In view of the above drawbacks of the prior art that the thickness of the diffraction structure itself and the light mixing distance result in a larger thickness of the light-emitting panel itself, and the thickness design requirements of some small-sized panels and ultra-thin panels cannot be met, the present application provides a light-emitting lamp panel, a backlight module and a liquid crystal display device, so as to solve the above technical problems.
The application provides a luminous lamp plate, include:
a driving substrate;
the light-emitting chip is arranged on the driving substrate;
the sealing adhesive layer surrounds the light-emitting chip and is arranged on the driving substrate, and a flat surface is formed on one side, far away from the driving substrate, of the sealing adhesive layer and the light-emitting chip;
and a diffraction layer disposed over the planar surface.
Through setting up the sealing compound layer with luminous chip contour in order to form the plane to set up the diffraction layer on the plane, greatly reduced the light mixing distance of luminous lamp plate, be favorable to thinning the whole thickness of luminous lamp plate and combination product.
Optionally, a plurality of diffraction slits are formed on the diffraction layer, the positions of the diffraction slits are arranged corresponding to the light emitting sides of the light emitting chips, and a plurality of diffraction slits are arranged on the light emitting sides of one light emitting chip.
Optionally, the plurality of diffraction slits are in concentric ring structures, and the circle centers of the concentric ring structures correspond to the central positions of the flat surfaces, so that the light mixing effect is improved, and the uniformity of light emission is improved.
Optionally, the height of the sealing glue layer is greater than or equal to the height of the light emitting chip, which is favorable for improving the flatness of the flat surface, ensuring the light emitting uniformity and further improving the light mixing effect.
The light-emitting lamp panel is characterized in that the sealing adhesive layer is matched with the light-emitting chip to form a flat surface, and the diffraction layer is arranged on the flat surface to serve as a diffraction structure.
Based on the same inventive concept, the application also provides a backlight module, which comprises the light-emitting lamp panel and the optical film arranged on the light-emitting side of the light-emitting lamp panel.
Because the backlight module adopts the light-emitting lamp panel, in the light-emitting lamp panel, the sealing glue layer with the same height as the light-emitting chip is arranged to form a flat surface, and the diffraction layer is arranged on the flat surface, the light mixing distance of the light-emitting lamp panel is greatly reduced, and the thickness of the light-emitting lamp panel and the backlight module is reduced.
Optionally, the optical film comprises at least one of a diffusion sheet, a reflection sheet and a brightness enhancement film, which is favorable for improving the diffusion effect of the emergent light and further improving the uniformity of the emergent light.
Optionally, the optical film includes the diffusion sheet, the reflection sheet and the brightness enhancement film that are sequentially disposed along the light emitting direction of the light emitting lamp panel, so as to facilitate improving the light emitting intensity.
Optionally, the light emitting chip includes a blue light emitting diode, and the optical film further includes a quantum dot film disposed between the reflective sheet and the light enhancement film, which is beneficial to improving the light intensity.
Optionally, the backlight module further includes a middle frame, the middle frame includes a box-shaped metal middle frame and a plastic middle frame disposed on an inner side wall of the metal middle frame, the driving substrate of the light-emitting lamp panel is connected with an inner bottom wall of the metal middle frame, and the plastic middle frame surrounds and connects the light-emitting lamp panel and the optical film.
According to the backlight module, the adopted light-emitting lamp panel is matched with the light-emitting chip to form the flat surface, and the diffraction layer is arranged on the flat surface to serve as the diffraction structure, so that compared with a three-dimensional diffraction structure in the form of a grating and the like, the thickness of the backlight module is greatly reduced, the light mixing distance is reduced, the whole thickness of the light-emitting lamp panel is reduced, and various size requirements of light-emitting products are met.
Based on the same technical conception, a liquid crystal display device is also provided, and the liquid crystal display device comprises the backlight module and a liquid crystal panel arranged on the light emitting side of the backlight module.
According to the liquid crystal display device, the adopted light-emitting lamp panel is matched with the light-emitting chip to form the flat surface, and the diffraction layer is arranged on the flat surface to serve as the diffraction structure, so that compared with a three-dimensional diffraction structure in the form of a grating and the like, the thickness of the liquid crystal display device is greatly reduced, the light mixing distance is reduced, the whole thickness of the light-emitting lamp panel is reduced, and various size requirements of light-emitting products are met.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:
FIG. 1 is an exploded view of a light emitting lamp panel according to an exemplary embodiment of the present application;
FIG. 2 is an isometric view of a light emitting light panel according to an exemplary embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a partial structure of a light emitting lamp panel according to an exemplary embodiment of the present application;
FIG. 4 is a top view of a diffraction layer of a light-emitting panel according to an exemplary embodiment of the present application;
fig. 5 is a schematic cross-sectional view of a liquid crystal display device including a backlight module shown in the present application.
Reference numerals illustrate: 1-driving a substrate; 2-a light emitting chip; 3-an adhesive sealing layer; 301-a flat face; a 4-diffraction layer; 5-a middle frame; 51-a metal middle frame; 52-a plastic middle frame; 6-an optical film; 61-diffusion sheet; 62-a reflector; 63-a brightness enhancement film; 64-quantum dot film; 7-liquid crystal panel.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It should be noted that, in the existing light-emitting panel including, but not limited to, a liquid crystal backlight panel, the emitted light is provided by light-emitting chips arranged in an array, such as LEDs (light-emitting diodes), and each light-emitting chip is used as an independent light source, and the light-emitting range of each light-emitting chip is concentrated in a smaller angle range, so if the backlight is not processed, the overall light-emitting of the light-emitting panel is not uniform, but is strong at the irradiation position of each light-emitting chip, and weak at the interval of the irradiation position, and finally a light spot or a halo appears on the light-emitting side.
Based on this, the present application is expected to provide a solution to the above technical problems, including a light-emitting panel, a backlight module and a liquid crystal display device, where the light-emitting panel and the backlight module can be used to form a light-emitting panel, and further to manufacture various electronic products such as screens, the details of which will be described in the following embodiments.
In one embodiment, referring to fig. 1-3, the present application schematically illustrates a light emitting lamp panel, the light emitting lamp panel comprising:
a drive substrate 1, the drive substrate 1 being a base for carrying a light emitting element;
a light emitting chip 2, the light emitting chip 2 being disposed on the driving substrate 1;
a sealing layer 3, wherein the sealing layer 3 surrounds the light-emitting chip 2 and is arranged on the driving substrate 1, and the sealing layer 3 and the light-emitting chip 2 form a flat surface 301 at one side far away from the driving substrate 1;
a diffraction layer 4, the diffraction layer 4 being provided on the flat surface 301.
In this embodiment, the flat surface 301 formed by the sealing adhesive layer 3 and the light emitting chip 2 is used as a structural basis, and the diffraction layer 4 is, for example, a lithographic layer structure printed by photolithography and attached to the flat surface 301, which has a very small thickness, is favorable for reducing the thickness of the light emitting lamp panel, and for convenience of observation and understanding, the size of the diffraction layer 4 is enlarged in the drawings, and the size or the proportion relation of the diffraction layer 4 in practical implementation is not shown.
In this embodiment, the diffraction layer 4 is provided with a plurality of diffraction slits, and the positions of the diffraction slits are set corresponding to the light emitting side of the light emitting chip 2, when the light emitting chip 2 emits light, the light emitted will irradiate the diffraction slits, and during the process of penetrating the diffraction layer 4, diffraction is generated at the diffraction slits, so that the light emitted from the diffraction layer 4 through the diffraction slits is uniformly mixed.
Specifically, in the present embodiment, referring to fig. 1, 2 and 4, the diffraction slits on the diffraction layer 4 are arranged in a concentric ring structure, which is beneficial to improving uniformity of the diffracted light. Further, the center of the concentric ring structure corresponds to the center position of the flat surface 301, and diffuses from the center position to the whole flat surface 301, which is beneficial to improving uniformity of the diffracted light and improving light mixing effect.
It should be noted that, fig. 1 and fig. 2 show the structure of a light-emitting lamp panel at one light-emitting chip 2, fig. 4 shows a central area or a local area of the diffraction layer 4, and a plurality of light-emitting chips 2 may be disposed on one light-emitting lamp panel, that is, a plurality of light-emitting chips 2 may be arrayed in a coverage area of the diffraction layer 4 on the flat surface 301, and light emitted by the light-emitting chips 2 is diffracted by the diffraction layer 4 disposed on the flat surface 301, so as to form a wide range of uniform light emission on the light-emitting side of the diffraction layer 4.
In some embodiments, along the light emitting direction, the height of the sealing glue layer 3 is greater than or equal to the height of the light emitting chip 2, for example, in this embodiment, the sealing glue layer 3 is equal to the height of the light emitting chip 2, and the upper surface of the sealing glue layer 3 and the upper surface of the light emitting chip 2 are flush, so as to form a flat surface 301 together, which is beneficial to further ensuring the uniformity of light emission.
In some embodiments, the driving substrate 1 may be provided with a metal power supply line connected to the light emitting chip 2, in addition to being a mounting base of the light emitting chip 2, and the metal power supply line supplies power to the light emitting chip 2.
In the present embodiment, the material of the driving substrate 1 may include, but is not limited to, common materials such as glass, organic plastic, etc., and can reflect scattered light, which is beneficial to reduce the scattered light loss of the light-emitting lamp panel.
According to the light-emitting lamp panel, the sealing adhesive layer 3 and the light-emitting chip 2 are matched to form the flat surface 301, and the diffraction layer 4 is arranged on the flat surface 301 to serve as a diffraction structure, so that compared with a three-dimensional diffraction structure in a grating and other forms, the thickness of the light-emitting lamp panel is greatly reduced, the light mixing distance is reduced, the whole thickness of the light-emitting lamp panel is reduced, and various size requirements of light-emitting products are met.
In another embodiment, the present application also exemplarily shows a backlight module, where the backlight module includes the light-emitting lamp panel as described above and the optical film 6 disposed on the light-emitting side of the light-emitting lamp panel, where the light-emitting lamp panel in the backlight module adopts the light-emitting lamp panel described in the foregoing embodiment, and fig. 1 to fig. 4 may be referred to, and the structure and the features thereof correspond to those described in the foregoing embodiment one by one, and by adopting the light-emitting lamp panel in the foregoing embodiment, the thickness of the backlight module may be effectively reduced, and in some application scenarios, the backlight module may be used to combine or produce products such as a light-emitting panel, a screen, and the manner of disposing the optical film 6 may be referred to fig. 5.
In some embodiments, the optical film 6 includes at least one of a diffusion sheet 61, a reflection sheet 62, and a light enhancement film 63, wherein the diffusion sheet 61 is capable of diffusing light, which is advantageous for further improving uniformity of light extraction, and the reflection sheet 62 and the light enhancement film 63 are advantageous for improving light extraction intensity.
Specifically, in the present embodiment, the optical film 6 includes a diffusion sheet 61, a reflection sheet 62, and a light enhancement film 63 that are disposed in this order in the light-emitting direction.
In this embodiment, the light emitting chip 2 includes a blue light emitting diode, the optical film 6 further includes a Quantum Dot film 64, the Quantum Dot film 64 is disposed between the reflective sheet 62 and the light enhancement film 63, the Quantum Dot film 64 includes, but is not limited to, a light conversion film made of a QD (Quantum Dot) material, the QD material has an stimulated luminescence property, and generates light of other colors when irradiated by a specific light, for example, in this embodiment, blue light emitted by the blue light emitting diode passes through the Quantum Dot film 64, and excites the QD material to generate red and green light, and the blue light emitted by the blue light emitting diode forms a white backlight or other color light in cooperation with the light loss of the blue light emitting diode.
In this embodiment, the backlight module further includes a middle frame 5, the middle frame 5 specifically includes a box-shaped metal middle frame 515 and a plastic middle frame 525 disposed on an inner side wall of the metal middle frame 515, the driving substrate 1 of the light-emitting lamp panel is connected with an inner bottom wall of the metal middle frame 515, the plastic middle frame 525 surrounds and connects the light-emitting lamp panel and the optical film 6 to perform positioning and protecting functions, specifically, the metal middle frame 515 is beneficial to improving structural strength of the backlight module, the plastic middle frame 525 can be obtained by injection molding a common plastic injection molding material such as PC (Polycarbonate) plastic or ABS (Acrylonitrile Butadiene Styrene, acrylonitrile-butadiene-styrene copolymer) material, etc., and can be attached to the light-emitting lamp panel, the optical film 6 and the liquid crystal panel 7 to perform protecting and anti-impact functions.
In the backlight module, the structure of the light-emitting lamp panel is described in detail in the above embodiments, and the effect generated by the backlight module is in one-to-one correspondence with the structure and effect of the light-emitting lamp panel in the above embodiments, the sealing layer 3 and the light-emitting chip 2 are matched to form the flat surface 301, and the diffraction layer 4 is arranged on the flat surface 301 as a diffraction structure, so that compared with the three-dimensional diffraction structure in the form of a grating, the thickness of the backlight module is greatly reduced, the light mixing distance is reduced, the overall thickness of the light-emitting lamp panel is reduced, and the requirements of various sizes of light-emitting products are met.
In still another embodiment, the present application further provides a liquid crystal display device, where the liquid crystal display device includes a backlight module in the foregoing embodiment and a liquid crystal panel 7 disposed on a light emitting side of the backlight module, and the backlight module and the light emitting lamp panel in the liquid crystal display device are the backlight module and the light emitting lamp panel described in the foregoing embodiment, and may refer to fig. 1 to fig. 4, and their structures and features correspond to those described in the foregoing embodiment one by one, and in this embodiment, the liquid crystal display device is based on the backlight module in the foregoing embodiment, and may refer to fig. 5, where a middle frame 5 of the backlight module surrounds and is connected with the liquid crystal panel 7, so as to position and protect the liquid crystal panel 7.
The structure of the backlight module and the light-emitting lamp panel included in the liquid crystal display device has been described in detail in the above embodiments, and the effects generated by the liquid crystal display device are in one-to-one correspondence with the structures and effects of the light-emitting lamp panel and the backlight module in the above embodiments, the flat surface 301 is formed by matching the sealing layer 3 and the light-emitting chip 2, and the diffraction layer 4 is disposed on the flat surface 301 as a diffraction structure, so that compared with the three-dimensional diffraction structure in the form of a grating, the thickness of the liquid crystal display device is greatly reduced, the light mixing distance is reduced, the whole thickness of the light-emitting lamp panel is reduced, and various size requirements of light-emitting products are satisfied.
The above embodiments are merely illustrative of the principles of the present application and its effectiveness and are not intended to limit the present application. Modifications and variations may be made to the above-described embodiments by those of ordinary skill in the art without departing from the spirit and scope of the present application. It is therefore contemplated that the appended claims will cover all such equivalent modifications and changes as fall within the true spirit and scope of the disclosure.
Claims (10)
1. A luminescent light panel, comprising:
a driving substrate;
the light-emitting chip is arranged on the driving substrate;
the sealing adhesive layer surrounds the light-emitting chip and is arranged on the driving substrate, and a flat surface is formed on one side, far away from the driving substrate, of the sealing adhesive layer and the light-emitting chip;
and a diffraction layer disposed over the planar surface.
2. A luminescent light panel as defined in claim 1, wherein: the diffraction layer is provided with a plurality of diffraction slits, the positions of the diffraction slits are arranged corresponding to the light-emitting sides of the light-emitting chips, and a plurality of diffraction slits are arranged on the light-emitting sides of one light-emitting chip.
3. A luminescent light panel as defined in claim 2, wherein: the diffraction slits are in a concentric ring structure, and the circle center of the concentric ring structure corresponds to the center position of the flat surface.
4. A luminescent light panel as defined in claim 1, wherein: the height of the sealing adhesive layer is larger than or equal to the height of the light-emitting chip.
5. A backlight module is characterized in that: comprising a light-emitting lamp panel according to any one of claims 1-4 and an optical film arranged on the light-emitting side of the light-emitting lamp panel.
6. A backlight module according to claim 5, wherein: the optical film includes at least one of a diffusion sheet, a reflection sheet, and a brightness enhancement film.
7. A backlight module according to claim 6, wherein: the optical film comprises the diffusion sheet, the reflection sheet and the light enhancement film which are sequentially arranged along the light emitting direction of the light emitting lamp panel.
8. A backlight module according to claim 7, wherein: the light-emitting chip comprises a blue light-emitting diode, and the optical film further comprises a quantum dot film arranged between the reflecting sheet and the light-increasing film.
9. A backlight module according to claim 5, wherein: the backlight module further comprises a middle frame, wherein the middle frame comprises a box-shaped metal middle frame and a plastic middle frame arranged on the inner side wall of the metal middle frame, the driving substrate of the light-emitting lamp panel is connected with the inner bottom wall of the metal middle frame, and the plastic middle frame surrounds and is connected with the light-emitting lamp panel and the optical film.
10. A liquid crystal display device characterized in that: a backlight module comprising the backlight module according to any one of claims 5-9, and a liquid crystal panel arranged at the light exit side of the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320016239.2U CN219203186U (en) | 2023-01-04 | 2023-01-04 | Luminous lamp panel, backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320016239.2U CN219203186U (en) | 2023-01-04 | 2023-01-04 | Luminous lamp panel, backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219203186U true CN219203186U (en) | 2023-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320016239.2U Active CN219203186U (en) | 2023-01-04 | 2023-01-04 | Luminous lamp panel, backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219203186U (en) |
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2023
- 2023-01-04 CN CN202320016239.2U patent/CN219203186U/en active Active
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Address after: 402760 No.69, Wushan Road, Biquan street, Bishan District, Chongqing Patentee after: Chongqing Kangjia Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 402760 No.69, Wushan Road, Biquan street, Bishan District, Chongqing Patentee before: Chongqing Kangjia Photoelectric Technology Research Institute Co.,Ltd. Country or region before: China |
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