CN219842606U - Backlight module with integrated reflection cup and diffusion plate and display screen - Google Patents
Backlight module with integrated reflection cup and diffusion plate and display screen Download PDFInfo
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- CN219842606U CN219842606U CN202320737525.8U CN202320737525U CN219842606U CN 219842606 U CN219842606 U CN 219842606U CN 202320737525 U CN202320737525 U CN 202320737525U CN 219842606 U CN219842606 U CN 219842606U
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 69
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- 238000001746 injection moulding Methods 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
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- 230000003287 optical effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
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- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013507 mapping Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 244000144985 peep Species 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses a backlight module and a display screen with integrated reflection cups and diffusion plates, which comprise a module backboard, wherein a substrate is arranged at the upper part of the module backboard, LED light sources are distributed on the surface of the substrate, the upper part of the substrate is provided with the reflection cups, the upper part of the reflection cups is provided with the diffusion plates, and the reflection cups and the diffusion plates are integrally formed parts by double-material injection molding; the display screen comprises a backlight module with the reflecting cup and the diffusion plate integrated. The backlight module and the display screen with the integrated reflection cup and the diffusion plate have the characteristics of simple structure and convenient implementation, can prevent light crosstalk, improve display effect and use experience during practical application, and have stronger market competitiveness.
Description
Technical Field
The utility model relates to the field of display, in particular to a backlight module with a reflection cup and a diffusion plate integrated and a display screen.
Background
Along with the increasing degree of automobile intellectualization in recent years, the intelligent seat cabin is more and more scientific and technological, the operation interface of intelligent AI and the entertainment experience of family shadow courtyard level are realized by configuring the display screen, so that the number of the configurations of the vehicle-mounted display screens on each trolley is increased. Because the light field environment used by the automobile has wide coverage range and high safety level, the display effect requirement on the display screen can be higher than that of common consumer products, and the display effect requirement is particularly reflected in the convenience of brightness and definition.
The display technology of the MiniLED backlight with the partition dimming function becomes an upgrade version of the LCD display technology, so that the advantages of the traditional backlight in terms of service life and reliability are reserved, and the high contrast ratio brought by the partition dimming can be compared with OLED display. At present, a few high-end vehicle types are applied to display screens with MiniLED backlight, and with the increasing technical maturity and the decreasing cost, more vehicle types of the display screens applying MiniLED are increased.
Because the current MiniLED technology cannot achieve pixel-level partition, and crosstalk of light exists between the areas, when a high-contrast picture is displayed, obvious halation phenomenon can be seen, and the quality of the display picture is affected. However, adding the reflective cup brings new problems, and light rays are reflected back through the surface of the diffusion plate and the internal diffusion agent and are emitted to the wall of the connected cup to form a checkered mapping reticulate pattern, so that the picture quality is affected, and the use experience is affected.
Accordingly, the present utility model is directed to a new solution to solve the existing technical drawbacks.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a backlight module with a reflecting cup and a diffusion plate integrated and a display screen, and solves the technical defects that the reflecting cup in the prior art is easy to cause mapping reticulate patterns, affects picture quality, has poor use experience and the like.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a integrative backlight unit of reflection cup and diffuser plate, includes the module backplate, module backplate upper portion is provided with the base plate, base plate surface distribution has the LED light source, and base plate upper portion is provided with the reflection cup, reflection cup upper portion is provided with the diffuser plate, the reflection cup with the diffuser plate is the part of double-material injection moulding integrated into one piece.
As an improvement of the above technical solution, the upper surface of the diffusion plate is level with the upper end of the reflection cup.
As a second improvement of the above technical solution, the upper surface of the diffusion plate is higher than the upper end of the reflection cup.
As a third improvement of the above technical solution, the diffusion plate is provided with concave structures on a lower surface thereof close to the LED light sources, and the number and positions of the concave structures match with those of the LED light sources.
As a further improvement of the above technical solution, the diffusion plate is provided with a convex structure on a lower surface thereof close to the LED light sources, and the number and positions of the convex structures match with those of the LED light sources.
As a further improvement of the technical scheme, the diffusion plate is provided with arc-shaped micro-convex structures which are uniformly distributed on the lower surface, close to the LED light sources, of the diffusion plate, and the distribution positions of the arc-shaped micro-convex structures are matched with the positions of the LED light sources.
As a further improvement of the technical scheme, the reflecting cup comprises a reflecting cup bottom plate and dividing strips which are distributed on the reflecting cup bottom plate and are in transverse and vertical cross distribution, the dividing strips which are in transverse and vertical cross distribution divide the area above the reflecting cup bottom plate into a plurality of reflecting cup inner cavities, through holes are formed in the positions, corresponding to the reflecting cup bottom plate, of each reflecting cup inner cavity, the LED light sources penetrate through the through holes in a one-to-one correspondence manner and enter the corresponding reflecting cup inner cavities, and the reflecting cup inner walls corresponding to the reflecting cup inner cavities are reflecting surfaces of the reflecting cups.
As a further improvement of the technical scheme, a diffusion film is arranged above the diffusion plate, a brightness enhancement film is arranged above the diffusion film, and a DBEF/peep prevention film is arranged above the brightness enhancement film.
As a further improvement of the technical scheme, double faced adhesive tapes are adopted for mutual fixation and adhesion between the substrate and the reflecting cup, between the diffusion plate and the diffusion film, between the diffusion film and the brightness enhancement film and before the brightness enhancement film and the DBEF/peep-proof film.
As a further improvement of the technical scheme, the side part of the module backboard is fixedly provided with a middle iron frame, the upper part of the middle iron frame is provided with an inward folded part which is pressed at the peripheral position of the upper surface of the DBEF/peep-proof film.
As a further improvement of the technical scheme, the upper surface of the inner folded part is provided with a foam layer.
As a further improvement of the technical scheme, the heat conducting glue is arranged between the base plate and the module backboard, and is used for bonding the base plate inside the module backboard and conducting heat generated by the base plate during working to the module backboard.
As a further improvement of the technical scheme, the module backboard comprises a backboard base plate and backboard wrapping edges arranged on the side part of the backboard base plate, and side reflection strips are arranged on the inner sides of the backboard wrapping edges.
As a further improvement of the technical scheme, the module backboard is one of a plastic board, a stainless steel board and a magnesium aluminum alloy board.
The utility model also provides:
a display screen comprises a backlight module with a reflecting cup and a diffusion plate integrated.
The beneficial effects of the utility model are as follows: the utility model provides a backlight module and a display screen with a reflection cup and a diffusion plate integrated, wherein the backlight module and the display screen with the reflection cup and the diffusion plate integrated are formed by injection molding of double materials of the reflection cup and the diffusion plate, and the reflection cup can shield or prevent light rays overflowing from the diffusion plate, so that the phenomenon of light net is avoided, and the display effect and the use experience are improved.
In sum, the backlight module and the display screen with the integrated reflection cup and the diffusion plate solve the technical defects that the reflection cup in the prior art is easy to cause mapping reticulate patterns, affects the picture quality, has poor use experience and the like.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic assembly diagram of a backlight module with a reflector cup and a diffuser plate according to an embodiment 1 of the present utility model;
FIG. 2 is a schematic diagram illustrating an assembly of a backlight module with a diffusion plate and a reflection cup according to an embodiment 2 of the utility model
FIG. 3 is a schematic view of a first embodiment of a diffuser plate according to the present utility model;
FIG. 4 is a schematic view of a second embodiment of a diffuser plate according to the present utility model;
FIG. 5 is a schematic view of a third embodiment of a diffuser plate according to the present utility model.
Detailed Description
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of not contradicting and conflicting, and refer to figures 1-5.
Referring to fig. 1 and fig. 2, a backlight module with a reflection cup and a diffusion plate integrated together includes a module back plate 1, wherein in this embodiment, the module back plate 1 is one of a plastic plate, a stainless steel plate, and a magnesium aluminum alloy plate. In other embodiments, an operator may select other materials meeting the requirements as the module backboard, a substrate 2 is disposed on the upper portion of the module backboard 1, LED light sources 21 are distributed on the surface of the substrate 2, a reflective cup 3 is disposed on the upper portion of the substrate 2, a diffusion plate 4 is disposed on the upper portion of the reflective cup 3, the reflective cup 3 and the diffusion plate 4 are integrally formed by two-material injection molding, a diffusion film 5 is disposed above the diffusion plate 4, a brightness enhancement film 6 is disposed above the diffusion film 5, and a DBEF/peep prevention film 7 is disposed above the brightness enhancement film 6.
The side part of the module backboard 1 is fixedly provided with a middle iron frame 8, the upper part of the middle iron frame 8 is provided with an inward folded part 81 which is folded inwards, the inward folded part 81 is pressed at the peripheral position of the upper surface of the DBEF/peep-proof film 7, and the upper surface of the inward folded part 81 is provided with a foam layer 82.
A heat-conducting glue 9 is arranged between the substrate 2 and the module backboard 1, and the heat-conducting glue 9 is used for bonding the substrate 2 inside the module backboard 1 and conducting heat generated when the substrate 2 works to the module backboard 1; in addition, the substrate 2 and the reflection cup 3, the diffusion plate 4 and the diffusion film 5, the diffusion film 5 and the brightness enhancement film 6, and the brightness enhancement film 6 and the DBEF/peep prevention film 7 are all fixedly bonded with each other by double sided tape.
Further, the module backboard 1 includes a backboard base plate 101 and a backboard edge 102 disposed at a side portion of the backboard base plate 101, a side reflection strip 103 is disposed at an inner side of the backboard edge 102, and the reflection strip 103 can reflect light at an edge position outwards, so that light leakage is avoided, and a display effect is improved.
In the above-mentioned structure, module backplate 1 mainly plays bearing structure and radiating effect, and module backplate 1 is the supporting part of whole backlight unit, and other parts all support through module backplate 1, and simultaneously, the during operation of backlight unit, the heat that the light source produced also can transmit for module backplate 1 and by module backplate 1 to outside air heat conduction, plays the heat dissipation function.
The heat conducting glue 9 mainly plays a role in bonding the substrate 2 with the module backboard 1 and guiding out heat of the substrate 2 to the module backboard 1;
the LED light source 21 is a light source device of the whole backlight film group, and generates backlight light during operation;
the substrate 2 is a circuit board connected with the LED light source 21 and other elements, and the material of the substrate 2 can be FR-4, BT, FPC, glass, aluminum plate, ceramic and the like;
the double-sided adhesive tape plays a role in fixing the reflecting cup 3, the diffusion plate 4 and various diaphragms;
the reflecting cup 3 plays roles in blocking light crosstalk, optimizing optical effects and improving brightness;
the diffusion plate 4 plays a role in homogenizing optical effects and simultaneously plays a role in supporting the membrane;
the diffusion film 5 plays roles in atomizing optical effect, hiding, and preventing the brightness enhancement film from being scratched;
the light enhancement film 6 plays a role in shrinking the light emitting angle of the light emitting surface and improving the light intensity in a certain angle;
the DBEF/peep-proof film 7 plays a role in providing optical utilization rate, and the peep-proof film plays a role in blocking light rays with a large visual angle;
the middle iron frame 8 plays a role in fixing various diaphragms and is simultaneously connected with the supporting function of the external frame;
the foam 82 serves as a buffer.
Because the reflection cup 3 and the diffusion plate 4 are integrally formed by injection molding, the structure of the diffusion plate 4 is moved downwards, the OD value is reduced (the distance between the diffusion plate 4 and the substrate 2 is reduced), the light mixing distance is reduced, the difficulty of eliminating the lamp eyes is increased, and according to the optical design requirement, diffusion structures such as a concave-convex or convex structure, a surface microstructure, an atomization structure and the like are required to be made on the upper surface and the lower surface of the diffusion plate 4, so that the optical performance is improved through similar structures.
Referring to fig. 3, in the first embodiment of the diffusion plate 4, the diffusion plate 4 is provided with concave structures 31 near the lower surface of the LED light sources, and the number and positions of the concave structures 31 match the number and positions of the LED light sources 21.
Referring to fig. 4, in a second embodiment of the diffusion plate 4, the diffusion plate 4 is provided with convex structures 32 near the lower surface of the LED light sources, and the number and positions of the convex structures 32 match the number and positions of the LED light sources 21.
Referring to fig. 5, in a third embodiment of the diffusion plate 4, the diffusion plate 4 is provided with uniformly distributed arc-shaped micro-convex structures 33 near the lower surface of the LED light sources, and the distribution positions of the arc-shaped micro-convex structures 33 match the positions of the LED light sources 21.
In other embodiments, the diffuser plate 4 may also be provided with an atomized surface configuration to cover the display capability.
Referring to fig. 1, in the first positional relationship between the reflecting cup 3 and the diffusing plate 4, the upper surface of the diffusing plate 4 is flush with the upper end of the reflecting cup 3, and in this structure, the light of the adjacent LED light sources 21 is completely blocked by the diffusing plate, and no light crosstalk occurs.
Referring to fig. 2, in the second positional relationship between the reflecting cup 3 and the diffusing plate 4, the upper surface of the diffusing plate 4 is higher than the upper end of the reflecting cup 3, and when the substrate is implemented, the height difference between the upper surface of the diffusing plate 4 and the upper end of the reflecting cup 3 cannot be too large, and in this structure, the adjacent LED light sources 21 generate less light crosstalk phenomenon.
For the above-mentioned reflection cup 3, the reflection cup 3 includes a reflection cup bottom plate and a separation strip distributed on the reflection cup bottom plate and in a horizontal-vertical cross distribution, the separation strip in a horizontal-vertical cross distribution separates the area above the reflection cup bottom plate into a plurality of reflection cup inner cavities 30, each reflection cup inner cavity 30 has a through hole at the position corresponding to the reflection cup bottom plate, the LED light sources 21 pass through the through holes one by one and enter the corresponding reflection cup inner cavities 30, the reflection cup inner wall corresponding to the reflection cup inner cavity 30 is the reflection surface of the reflection cup 3, and when in implementation, a reflection layer, such as a plating layer or a reflection coating, can be arranged on the reflection surface of the reflection cup 3, and can be specifically selected according to needs.
Based on the backlight module with the integrated reflection cup and diffusion plate, the utility model also provides:
a display screen comprises a backlight module with a reflecting cup and a diffusion plate integrated.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. A backlight module integrating a reflection cup and a diffusion plate is characterized in that: including module backplate (1), module backplate (1) upper portion is provided with base plate (2), base plate (2) surface distribution has LED light source (21), and base plate (2) upper portion is provided with reflection cup (3), reflection cup (3) upper portion is provided with diffuser plate (4), reflection cup (3) with diffuser plate (4) are the part of double-material injection moulding integrated into one piece.
2. The backlight module with integrated reflector cup and diffuser plate of claim 1, wherein: the upper surface of the diffusion plate (4) is level with the upper end part of the reflection cup (3) or the upper surface of the diffusion plate (4) is higher than the upper end part of the reflection cup (3).
3. The backlight module with integrated reflector cup and diffuser plate of claim 1, wherein: the diffusion plate (4) is provided with concave structures (31) on the lower surface, close to the LED light sources, of the diffusion plate, and the number and the positions of the concave structures (31) are matched with those of the LED light sources (21);
or, the diffusion plate (4) is provided with convex structures (32) on the lower surface close to the LED light sources, and the number and the positions of the convex structures (32) are matched with those of the LED light sources (21);
alternatively, the diffusion plate (4) is provided with uniformly distributed arc-shaped micro-convex structures (33) on the lower surface close to the LED light sources, and the distributed positions of the arc-shaped micro-convex structures (33) are matched with the positions of the LED light sources (21).
4. The backlight module with integrated reflector cup and diffuser plate of claim 1, wherein: the reflection cup (3) comprises a reflection cup bottom plate and separation strips which are distributed on the reflection cup bottom plate and are in transverse and vertical cross distribution, the area above the reflection cup bottom plate is divided into a plurality of reflection cup inner cavities (30) by the separation strips which are in transverse and vertical cross distribution, through holes are formed in the positions, corresponding to the reflection cup bottom plate, of each reflection cup inner cavity (30), the LED light sources (21) penetrate through the through holes in a one-to-one correspondence mode and enter the corresponding reflection cup inner cavities (30), and the reflection cup inner walls corresponding to the reflection cup inner cavities (30) are reflection surfaces of the reflection cup (3).
5. The backlight module with integrated reflector cup and diffuser plate of claim 1, wherein: the diffusion plate (4) top is provided with diffusion membrane (5), diffusion membrane (5) top is provided with bright enhancement film (6), bright enhancement film (6) top is provided with DBEF/peep-proof membrane (7).
6. The backlight module with integrated reflector cup and diffuser of claim 5, wherein: the substrate (2) and the reflecting cup (3), the diffusion plate (4) and the diffusion film (5), the diffusion film (5) and the intensifying film (6) and the DBEF/peep-proof film (7) are fixedly adhered to each other by double faced adhesive tape.
7. The backlight module with integrated reflector cup and diffuser of claim 5, wherein: the side part of the module backboard (1) is fixedly provided with a middle iron frame (8), the upper part of the middle iron frame (8) is provided with an inward folded part (81) which is folded inwards, and the inward folded part (81) is pressed at the peripheral position of the upper surface of the DBEF/peep-proof film (7);
the upper surface of the inner folded part (81) is provided with a foam layer (82).
8. The backlight module with integrated reflector cup and diffuser plate of claim 1, wherein: the heat conducting glue (9) is arranged between the base plate (2) and the module backboard (1), and the heat conducting glue (9) is used for bonding the base plate (2) inside the module backboard (1) and conducting heat generated during operation of the base plate (2) to the module backboard (1).
9. The backlight module with integrated reflector cup and diffuser plate of claim 1, wherein: the module backboard (1) comprises a backboard base plate (101) and backboard wrapping edges (102) arranged on the side parts of the backboard base plate (101), wherein side reflection strips (103) are arranged on the inner sides of the backboard wrapping edges (102);
the module backboard (1) is one of a plastic plate, a stainless steel plate and a magnesium aluminum alloy plate.
10. A display screen, characterized in that: the display screen comprises the backlight module with the reflection cup and the diffusion plate integrated as one body according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320737525.8U CN219842606U (en) | 2023-04-06 | 2023-04-06 | Backlight module with integrated reflection cup and diffusion plate and display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320737525.8U CN219842606U (en) | 2023-04-06 | 2023-04-06 | Backlight module with integrated reflection cup and diffusion plate and display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219842606U true CN219842606U (en) | 2023-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320737525.8U Active CN219842606U (en) | 2023-04-06 | 2023-04-06 | Backlight module with integrated reflection cup and diffusion plate and display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219842606U (en) |
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2023
- 2023-04-06 CN CN202320737525.8U patent/CN219842606U/en active Active
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