CN114141163B - Lamp panel structure and display device - Google Patents
Lamp panel structure and display device Download PDFInfo
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- CN114141163B CN114141163B CN202111491281.1A CN202111491281A CN114141163B CN 114141163 B CN114141163 B CN 114141163B CN 202111491281 A CN202111491281 A CN 202111491281A CN 114141163 B CN114141163 B CN 114141163B
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- 239000000758 substrate Substances 0.000 claims abstract description 21
- 238000009792 diffusion process Methods 0.000 claims description 60
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- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000002310 reflectometry Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 9
- 239000003292 glue Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
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- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 206010047571 Visual impairment Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention belongs to the technical field of intelligent manufacturing, and discloses a lamp panel structure and a display device. The lamp panel structure comprises a substrate, a backlight assembly and a scattering assembly, wherein a lamp groove is formed in the substrate; the backlight assembly comprises a light source part and a reflecting part, wherein the light source part is arranged in the lamp groove, the reflecting part comprises a first reflecting sheet and a second reflecting sheet, the first reflecting sheet is arranged at the bottom of the light source part and connected with the lamp groove, and the second reflecting sheet is arranged on the side wall of the lamp groove in a surrounding mode; the scattering component is arranged at the top of the lamp groove and can scatter the light emitted by the light source component and the light reflected by the reflecting component to the outside. The lamp panel structure provided by the invention improves the installation stability of the light source part; by arranging the first reflecting sheet and the second reflecting sheet, the reflectivity of the light emitted by the light source component is improved; by arranging the scattering component on the top of the lamp groove, the scattering rate of light emitted by the light source part is improved, and the brightness uniformity is improved.
Description
Technical Field
The invention relates to the technical field of intelligent manufacturing, in particular to a lamp panel structure and a display device.
Background
Mini LEDs have self-luminous display characteristics, and have the advantages of full solid state, long service life, high brightness, low power consumption, small volume, ultrahigh resolution and applicability to extreme environments such as high temperature or radiation. Compared with the OLED technology of self-luminous display, the Mini LED has the advantages of higher efficiency, longer service life, relatively stable materials which are not easy to be influenced by environment, and capability of avoiding the occurrence of the afterimage phenomenon and the like.
Mini LED display products are already applied to commercial fields such as monitoring command, high-definition performance, high-end cinema, medical diagnosis, advertisement display, conference exhibition, office display, virtual reality and the like, however, in the process of lighting of a direct type backlight module, the central brightness of the Mini LED is higher, the peripheral brightness is lower, and the phenomenon of uneven brightness can occur.
Disclosure of Invention
The invention aims to provide a lamp panel structure and a display device, which are used for improving the brightness uniformity of a lamp.
To achieve the purpose, the invention adopts the following technical scheme:
a lamp panel structure comprising:
the lamp socket is arranged on the base plate;
the backlight assembly comprises a light source piece and a reflecting piece, wherein the light source piece is arranged in the lamp groove, the reflecting piece comprises a first reflecting sheet and a second reflecting sheet, the first reflecting sheet is arranged at the bottom of the light source piece and is connected with the lamp groove, and the second reflecting sheet is arranged on the side wall of the lamp groove in a surrounding mode;
the scattering component is arranged at the top of the lamp groove and can scatter light emitted by the light source component and light reflected by the reflecting component to the outside.
Optionally, the scattering component comprises:
the first scattering piece is arranged on the groove top of the lamp groove and used for scattering light in the lamp groove;
the diffusion sheet is arranged on one side, away from the substrate, of the first scattering piece and is used for diffusing light passing through the first scattering piece;
the second scattering piece is arranged on one side, far away from the first scattering piece, of the diffusion piece and is used for scattering light passing through the diffusion piece.
Optionally, the scattering component further comprises a quantum film, and the quantum film is arranged between the diffusion sheet and the second scattering piece.
Optionally, the first scattering member includes an expansion sheet, and the expansion sheet is disposed opposite to the light source member.
Optionally, the first scattering element further includes a plurality of prism sheets, the prism sheets are disposed on the peripheral sides of the expansion sheets, and the expansion sheets and the prism sheets are integrally disposed.
Optionally, a plurality of backlight assemblies and scattering assemblies are arranged on the substrate, and the backlight assemblies and the scattering assemblies are arranged in a one-to-one correspondence.
Optionally, the longitudinal section of the second reflecting sheet is circular arc.
Optionally, the edge of the first reflecting plate is provided with a protrusion, and the top surface of the protrusion faces the light source component.
Optionally, the lamp panel structure further includes a heat dissipation plate, and the heat dissipation plate is disposed between the first reflection sheet and the substrate.
A display device comprising a lamp panel structure as claimed in any one of the preceding claims.
The invention has the beneficial effects that: according to the lamp panel structure provided by the invention, the lamp groove is formed in the substrate, and the light source part is arranged in the lamp groove, so that the installation stability of the light source part and the reflecting part is improved; the first reflecting sheet is arranged at the bottom of the light source piece and is connected with the lamp groove, the first reflecting sheet can fully reflect light at the bottom of the light source piece, the second reflecting sheet is arranged on the side wall of the lamp groove in a surrounding mode, the second reflecting sheet can reflect light at the periphery of the light source piece, and the combination of the first reflecting sheet and the second reflecting sheet improves the reflectivity of the light emitted by the light source piece; through set up scattering component at the groove top of light trough, scattering component scatters the light that light source spare sent and the light that the reflector reflected, improves the diffusivity, improves luminance homogeneity.
The display device provided by the invention comprises the lamp panel structure, and can improve the uniformity of display brightness.
Drawings
FIG. 1 is a schematic view of a lamp panel structure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a lamp panel structure provided by an embodiment of the present invention;
fig. 3 is a schematic structural view of a substrate and a backlight assembly provided in an embodiment of the present invention;
fig. 4 is a schematic view of a portion of the structure of a backlight assembly provided in an embodiment of the present invention.
In the figure:
1. a substrate; 11. a through hole; 2. a backlight assembly; 21. a light source member; 22. a reflecting member; 221. a first reflection sheet; 222. a second reflection sheet; 31. a first scattering member; 311. an expansion sheet; 312. a diamond lens; 3121. a first prism sheet; 3122. a second prism sheet; 3123. a third diamond lens; 32. a diffusion sheet; 33. a second scattering member; 34. a quantum film; 4. a heat dissipation plate; 5. a light scattering adhesive; 6. fluorescent film glue.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The embodiment provides a lamp panel structure, as shown in fig. 1-4, the lamp panel structure comprises a substrate 1, a backlight assembly 2 and a scattering assembly, wherein a lamp groove is arranged on the substrate 1; the backlight assembly 2 comprises a light source piece 21 and a reflecting piece 22, wherein the light source piece 21 is arranged in the lamp groove, the reflecting piece 22 comprises a first reflecting sheet 221 and a second reflecting sheet 222, the first reflecting sheet 221 is arranged at the bottom of the light source piece 21 and is connected with the lamp groove, and the second reflecting sheet 222 is arranged on the side wall of the lamp groove in a surrounding mode; the scattering component is arranged at the top of the lamp groove, and can scatter the light emitted by the light source component 21 and the light reflected by the reflecting component 22 to the outside.
According to the lamp panel structure provided by the invention, the lamp groove is formed in the substrate 1, and the light source piece 21 is arranged in the lamp groove, so that the installation stability of the light source piece 21 and the reflecting piece 22 is improved; by arranging the first reflecting sheet 221 and the second reflecting sheet 222, the first reflecting sheet 221 is arranged at the bottom of the light source piece 21 and is connected with the lamp groove, the first reflecting sheet 221 can fully reflect light at the bottom of the light source piece 21, the second reflecting sheet 222 is arranged on the side wall of the lamp groove in a surrounding mode, the second reflecting sheet 222 can reflect light at the periphery side of the light source piece 21, and the combination of the first reflecting sheet 221 and the second reflecting sheet 222 improves the reflectivity of the light emitted by the light source piece 21; by arranging the scattering component on the top of the lamp groove, the scattering component scatters the light emitted by the light source component 21 and the light reflected by the reflecting component 22, so that the scattering rate is improved, and the display brightness uniformity is further improved.
With continued reference to fig. 1, the diffusion assembly includes a first diffusion member 31, a diffusion sheet 32, and a second diffusion member 33, the first diffusion member 31 is disposed at a top of the light trough, and the first diffusion member 31 is configured to diffuse light in the light trough; the diffusion sheet 32 is arranged on one side of the first diffusion member 31 away from the substrate 1, and the diffusion sheet 32 is used for diffusing the light passing through the first diffusion member 31; the second diffusion member 33 is disposed at a side of the diffusion sheet 32 remote from the first diffusion member 31, and the second diffusion member 33 is configured to diffuse light passing through the diffusion sheet 32. By providing the first scattering member 31, the scattering rate of light emitted from the light source member 21 in the lamp groove can be effectively improved; by providing the diffusion sheet 32 and the second diffusion member 33, the diffusion sheet 32 diffuses the light of the first diffusion member 31, and the second diffusion member 33 diffuses the light passing through the diffusion sheet 32, the light scattering rate is further improved.
Further, the scattering assembly further comprises a quantum film 34, the quantum film 34 being arranged between the diffusion sheet 32 and the second scattering member 33. By arranging the quantum film 34, the quantum film 34 can make the light scattered by the diffusion sheet 32 clearer, the reflectivity of the quantum film 34 to visible light is lower, and the luminous efficiency can be effectively improved. Preferably, quantum diaphragm 34 is made of a metal film that facilitates manufacturing and that has good plasticity, toughness, and strength.
Referring to fig. 2, the first diffusion member 31, the diffusion sheet 32, the quantum film 34 and the second diffusion member 33 are provided with the diffusion adhesive 5 therebetween, and the diffusion adhesive 5 can enhance the light scattering effect. Optionally, the material of the light scattering adhesive 5 is true spherical organic silicon micro powder, so that the cost is low and the manufacturing is facilitated.
As shown in fig. 3, the first diffusion member 31 includes an expansion piece 311, and the expansion piece 311 is disposed opposite to the light source member 21. By providing the extension sheet 311, the extension sheet 311 is disposed opposite to the light source member 21 so as to extend out the light emitted from the light source member 21. Preferably, the expansion sheet 311 is arc-shaped, and the concave surface of the expansion sheet 311 faces the light source member 21 to increase the expansion ratio of the light emitted from the light source member 21.
Optionally, the first scattering member 31 further includes a plurality of prism sheets 312, the prism sheets 312 are disposed on the peripheral side of the extension sheet 311, and the extension sheet 311 and the prism sheets 312 are integrally disposed. By disposing the prism sheet 312 on the peripheral side of the extension sheet 311, the prism sheet 312 can further reflect the light reflected by the extension sheet 311 to the edge of the first diffusion member 31 so that the light enters the diffusion sheet 32. In the process of manufacturing the expansion sheet 311 and the prism sheet 312, the expansion sheet 311 and the prism sheet 312 may be simultaneously embedded into the first scattering member 31 to improve the molding efficiency.
The prism sheet 312 preferably includes a first prism sheet 3121, a second prism sheet 3122 and a third prism sheet 3123, wherein the first prism sheet 3121, the second prism sheet 3122 and the third prism sheet 3123 are all inclined, and the light reflected by the expansion sheet 311 is reflected to the first prism sheet 3121 through the second prism sheet 3122 and then is reflected to the third prism sheet 3123 through the first prism sheet 3121, and finally the third prism sheet 3123 reflects the light to the edge of the first diffusion member 31, so that the light enters the diffusion sheet 32, and the diffusion range of the light is enlarged, so as to improve the reflection uniformity of the light.
Optionally, the first scattering member 31 is provided with a fluorescent film glue 6, and the expansion sheet 311 and the prism sheet 312 are embedded in the fluorescent film glue 6. By arranging the fluorescent film glue 6, different fluorescent colors are arranged in the first scattering piece 31, so that electric quantity is saved, and service life is prolonged. Preferably, the fluorescent film glue 6 is made of a retroreflective material, and the process is simple and low in cost.
With continued reference to fig. 3, the longitudinal section of the second reflective sheet 222 is circular arc-shaped. This arrangement can enhance the reflectance of the light emitted from the light source member 21 by the second reflection sheet 222, and can concentrate the light reflected by the second reflection sheet 222 at the center facing the light source member 21, thereby making it possible to irradiate the spread sheet 311 more favorably. In this embodiment, the light source 21 is a mini LED lamp, and the mini LED lamp beads are small, so that local light control can be better realized.
Alternatively, the edge of the first reflection sheet 221 has a protrusion, and the top surface of the protrusion faces the light source member 21. By this arrangement, the light reflected by the first reflection sheet 221 can be concentrated at the center opposite to the light source member 21, and can be better irradiated to the extension sheet 311, thereby improving the center brightness and the reflection effect.
Alternatively, the substrate 1 is provided with a plurality of backlight assemblies 2 and a plurality of first scattering members 31, the backlight assemblies 2 and the first scattering members 31 are arranged in a one-to-one correspondence, the plurality of backlight assemblies 2 can improve the luminous efficiency of the backlight assemblies 2, and the plurality of first scattering members 31 can improve the diffusion and the reflectivity of light.
Preferably, both the backlight assembly 2 and the first diffusion member 31 are disposed in an array. The arrangement can simplify the structure and improve the processing and manufacturing efficiency. Further, the plurality of first scattering members 31 may be integrally formed to improve the processing efficiency. In this embodiment, the second scattering member 33 is also provided with the expansion sheet 311 and the prism sheet 312, so as to improve the scattering effect on light, improve the scattering uniformity of light, and further improve the uniformity of display brightness.
As shown in fig. 3 and 4, the lamp panel structure further includes a heat dissipation plate 4, the heat dissipation plate 4 is disposed between the first reflective sheet 221 and the substrate 1, and the heat dissipation plate 4 is used for dissipating heat from the backlight assembly 2. Illustratively, the heat dissipation plate 4 may be an aluminum plate, which can effectively reduce the temperature of the light source member 21 and improve the heat dissipation efficiency.
Optionally, a plurality of through holes 11 are provided in the side of the substrate 1 facing away from the scattering component. The provision of the through holes 11 can improve the heat dissipation efficiency. The through holes 11 are preferably arranged in an array, so that the processing difficulty is reduced, and the processing efficiency is improved.
In this embodiment, the substrate 1 is a circuit board, the light source 21 is electrically connected with the substrate 1, the substrate 1 is electrically connected with an external singlechip, and the singlechip is electrically connected with a power supply, so that the circuit board can be controlled by the singlechip.
The working principle of the lamp panel structure provided by the invention is as follows: the power is turned on, the light source member 21 emits light, and the first and second reflection sheets 221 and 222 reflect the light emitted from the light source member 21 to the expansion sheet 311; the extension sheet 311 extends a part of the light to the diffusion sheet 32, and the other part of the light reflected by the extension sheet 311 is reflected to the diffusion sheet 32 via the prism sheet 312; the diffusion sheet 32 diffuses light passing through the first diffusion member 31 to the quantum film 34, and the quantum film 34 makes the light diffused by the diffusion sheet 32 clearer and further diffuses the light to the second diffusion member 33 (the diffusion route of the light is shown in fig. 3).
The embodiment also provides a display device, which comprises the lamp panel structure and can improve display brightness. The display device provided in this embodiment may be any product or component with a display function, such as a liquid crystal display panel, electronic paper, mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator, etc.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (7)
1. A lamp panel structure, comprising:
a base plate (1), wherein a lamp groove is arranged on the base plate (1);
the backlight assembly (2) comprises a light source piece (21) and a reflecting piece (22), wherein the light source piece (21) is arranged in the lamp groove, the reflecting piece (22) comprises a first reflecting sheet (221) and a second reflecting sheet (222), the first reflecting sheet (221) is arranged at the bottom of the light source piece (21) and is connected with the lamp groove, and the second reflecting sheet (222) is arranged on the side wall of the lamp groove in a surrounding mode;
the scattering component is arranged at the top of the lamp groove and can scatter light emitted by the light source component (21) and light reflected by the reflecting component (22) to the outside;
the scattering assembly comprises:
the first scattering piece (31), the first scattering piece (31) is arranged at the groove top of the lamp groove, and the first scattering piece (31) is used for scattering the light in the lamp groove;
a diffusion sheet (32), wherein the diffusion sheet (32) is arranged on one side of the first diffusion member (31) away from the substrate (1), and the diffusion sheet (32) is used for diffusing the light passing through the first diffusion member (31);
a second diffusion member (33), wherein the second diffusion member (33) is arranged on one side of the diffusion sheet (32) away from the first diffusion member (31), and the second diffusion member (33) is used for diffusing the light passing through the diffusion sheet (32);
the first scattering piece (31) comprises an expansion piece (311), and the expansion piece (311) is arranged opposite to the light source piece (21);
the first scattering piece (31) further comprises a plurality of prism lenses (312), the prism lenses (312) are arranged on the periphery side of the expansion piece (311), and the expansion piece (311) and the prism lenses (312) are integrally arranged.
2. The lamp panel structure according to claim 1, wherein the scattering assembly further comprises a quantum film (34), the quantum film (34) being arranged between the diffusion sheet (32) and the second scattering member (33).
3. A lamp panel structure according to any one of claims 1-2, characterized in that the substrate (1) is provided with a plurality of backlight assemblies (2) and scattering assemblies, the backlight assemblies (2) and scattering assemblies being arranged in a one-to-one correspondence.
4. The lamp panel structure according to any one of claims 1-2, wherein the longitudinal section of the second reflector sheet (222) is circular arc-shaped.
5. A lamp panel structure according to any one of claims 1-2, characterized in that the edge of the first reflector sheet (221) is provided with a protrusion, the top surface of which is directed towards the light source member (21).
6. A lamp panel structure according to any one of claims 1-2, characterized in that the lamp panel structure further comprises a heat dissipating plate (4), the heat dissipating plate (4) being arranged between the first reflector sheet (221) and the substrate (1).
7. A display device comprising a lamp panel structure as claimed in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111491281.1A CN114141163B (en) | 2021-12-08 | 2021-12-08 | Lamp panel structure and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111491281.1A CN114141163B (en) | 2021-12-08 | 2021-12-08 | Lamp panel structure and display device |
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| Publication Number | Publication Date |
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| CN114141163A CN114141163A (en) | 2022-03-04 |
| CN114141163B true CN114141163B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111491281.1A Active CN114141163B (en) | 2021-12-08 | 2021-12-08 | Lamp panel structure and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114677917B (en) * | 2022-03-11 | 2024-03-19 | 绵阳惠科光电科技有限公司 | Backlight module and display device |
Citations (6)
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|---|---|---|---|---|
| CN1547065A (en) * | 2003-11-28 | 2004-11-17 | 友达光电股份有限公司 | Directly-down backlight assembly |
| JP2009037946A (en) * | 2007-08-03 | 2009-02-19 | Citizen Electronics Co Ltd | Backlight unit and display device |
| CN104267538A (en) * | 2014-09-28 | 2015-01-07 | 中航华东光电有限公司 | Efficient cooling LED backlight device |
| CN212658916U (en) * | 2020-06-03 | 2021-03-05 | 北京易美新创科技有限公司 | Direct type backlight module |
| CN212694721U (en) * | 2020-08-13 | 2021-03-12 | 苏州维旺科技有限公司 | Backlight module |
| CN212808854U (en) * | 2020-06-05 | 2021-03-26 | 深圳市隆利科技股份有限公司 | Direct-down MINI-LED backlight source |
-
2021
- 2021-12-08 CN CN202111491281.1A patent/CN114141163B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547065A (en) * | 2003-11-28 | 2004-11-17 | 友达光电股份有限公司 | Directly-down backlight assembly |
| JP2009037946A (en) * | 2007-08-03 | 2009-02-19 | Citizen Electronics Co Ltd | Backlight unit and display device |
| CN104267538A (en) * | 2014-09-28 | 2015-01-07 | 中航华东光电有限公司 | Efficient cooling LED backlight device |
| CN212658916U (en) * | 2020-06-03 | 2021-03-05 | 北京易美新创科技有限公司 | Direct type backlight module |
| CN212808854U (en) * | 2020-06-05 | 2021-03-26 | 深圳市隆利科技股份有限公司 | Direct-down MINI-LED backlight source |
| CN212694721U (en) * | 2020-08-13 | 2021-03-12 | 苏州维旺科技有限公司 | Backlight module |
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| CN114141163A (en) | 2022-03-04 |
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