CN215416195U - Reflector and direct type backlight structure - Google Patents
Reflector and direct type backlight structure Download PDFInfo
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- CN215416195U CN215416195U CN202121053224.0U CN202121053224U CN215416195U CN 215416195 U CN215416195 U CN 215416195U CN 202121053224 U CN202121053224 U CN 202121053224U CN 215416195 U CN215416195 U CN 215416195U
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Abstract
The utility model discloses a reflector and a direct type backlight structure, wherein the reflector comprises a plurality of reflecting cups, and each reflecting cup comprises a reflecting bottom surface and a reflecting side surface connected with the reflecting bottom surface; the reflecting side face is arranged in a step-shaped structure and/or a sawtooth-shaped structure. The reflecting cover provided by the utility model has the advantages that the reflecting angle of the reflecting side surface to the light source is increased and the brightness uniformity of the light source after reflection is improved by changing the structure of the reflecting side surface and the structure of the reflecting side surface.
Description
Technical Field
The utility model relates to the field of backlight modules, in particular to a reflector and a direct type backlight structure.
Background
BackLight module (BackLight) is a device for providing light source behind a Liquid Crystal Display (LCD), and its light emitting effect directly affects the visual effect of the liquid crystal display module (LCM). The liquid crystal itself does not emit light and it displays graphics or characters as a result of its modulation of the light produced by the backlight module.
The key point of the direct type backlight module is to control the uniformity of light emission and improve the luminous efficiency. In order to achieve better partitioned display effect in the direct-type backlight module, a reflective partitioning mechanism is generally used as an emitting mechanism of the direct-type backlight module, so that the direct-type backlight module is isolated into display partitions. The bowl comprises a plurality of reflection cups, is equipped with a hole or a plurality of holes in the reflection cup to hold one or a plurality of LED light sources, with the straight following formula lamp plate structure that is applicable to between different LED PITCH value size, like TV, on-vehicle, TV etc.. At present, the uniformity of light reflected by the reflector structure is insufficient, which can cause the local brightness of the backlight module to be displayed insufficiently and influence the visual effect of the liquid crystal display module.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a reflector and a direct type backlight structure.
The technical scheme adopted by the utility model for solving the problems is as follows:
a reflective shade comprises a plurality of reflective cups, wherein each reflective cup comprises a reflective bottom surface and a reflective side surface connected with the reflective bottom surface;
the reflecting side face is arranged in a step-shaped structure and/or a sawtooth-shaped structure.
The reflecting cover provided by the utility model increases the reflecting angle of the reflecting side surface to the light source by changing the structure of the reflecting side surface, and improves the brightness uniformity of the light source after being reflected.
Further, the corners on the reflecting side surfaces are set to be right angles and/or arc-shaped corners.
Further, a plurality of the reflecting cup arrays are arranged.
Furthermore, the top end of the connecting surface between two adjacent reflecting cups is of an angle structure.
Furthermore, the top end of the connecting surface between two adjacent reflecting cups is of a surface structure.
Furthermore, a plurality of light emitting holes are arranged on the reflecting bottom surface.
The utility model also provides a direct type backlight structure, which comprises a circuit board, a light-emitting element, a diffusion plate and an optical membrane, and is characterized by also comprising the reflection cover in any one of the technical schemes;
the circuit board, the light-emitting element, the diffusion plate and the optical membrane are sequentially arranged, the reflection cover is arranged between the circuit board and the diffusion plate, and the light-emitting element is arranged in the light outlet hole of the reflection cup.
The direct type backlight structure provided by the utility model has the advantages that the structure of the reflecting side surface is changed, so that the reflecting angle of the reflecting side surface to a light source emitted by the light-emitting element is increased, the brightness uniformity of the backlight module is improved, the lighting effect in the partition display can be adjusted, and the integral light-emitting uniformity can be adjusted.
Further, the optical film comprises a diffusion film, a fluorescent film, a lower brightness enhancement film and an upper brightness enhancement film, wherein the diffusion film, the fluorescent film, the lower brightness enhancement film and the upper brightness enhancement film are sequentially connected, and the diffusion film is connected with the diffusion plate.
In summary, the reflective cover and the direct type backlight structure of the present invention have the following technical effects:
the reflecting cover provided by the utility model increases the reflecting angle of the reflecting side surface to the light source by changing the structure of the reflecting side surface, and improves the brightness uniformity of the light source after being reflected.
The direct type backlight structure provided by the utility model has the advantages that the structure of the reflecting side surface is changed, so that the reflecting angle of the reflecting side surface to a light source emitted by the light-emitting element is increased, the brightness uniformity of the backlight module is improved, the lighting effect in the partition display can be adjusted, and the integral light-emitting uniformity can be adjusted.
Other technical effects of the present invention are pointed out in the specification in combination with the specific structure.
Drawings
FIG. 1 is a schematic structural diagram of a reflective cover according to an embodiment of the utility model;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a portion of a direct-type backlight structure according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second reflective cover according to an embodiment of the present invention;
FIG. 5 is an enlarged view of portion B of FIG. 4;
FIG. 6 is a schematic cross-sectional view of a partial structure of a direct-type backlight structure according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a third reflector according to an embodiment of the present invention;
FIG. 8 is an enlarged view of portion C of FIG. 7;
FIG. 9 is a schematic cross-sectional view of a partial structure of a three-direct-type backlight structure according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a four-reflector according to an embodiment of the present invention;
FIG. 11 is an enlarged view of portion D of FIG. 10;
fig. 12 is a schematic partial sectional view of a direct-type backlight structure according to an embodiment of the utility model.
Description of reference numerals:
1. a reflector; 10. a reflective cup; 11. a reflective bottom surface; 111. a light exit hole; 12. a reflective side surface; 2. a circuit board; 3. a light emitting element; 4. a diffusion plate; 5. an optical film.
Detailed Description
For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
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 invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Example one
As shown in fig. 1 and 2, the present invention provides a reflective cover 1, comprising a plurality of reflective cups 10, wherein the reflective cups 10 comprise a reflective bottom surface 11 and a reflective side surface 12 connected to the reflective bottom surface 11; the reflective side surfaces 12 are arranged in a stepped and/or saw-tooth configuration. By changing the structure of the reflecting side surface 12, the reflecting angle of the reflecting side surface 12 to the light source is increased, and the brightness uniformity of the light source after reflection is improved.
In this embodiment, several of the reflective cups 10 are arranged in an array so that the reflective cover 1 formed by the reflective cups 10 can be matched with the light emitting elements 3 on the circuit board 2 in the backlight structure. The reflecting bottom surface 11 is provided with a plurality of light emitting holes 111, the number of the light emitting holes 111 is equal to the number of the light emitting elements 3 located in the same reflecting cup 10 on the circuit board 2 in the backlight structure, and the light emitting elements 3 are matched with the light emitting holes 111, so that the reflecting area of the reflecting bottom surface 11 can be maximized.
More specifically, in the present embodiment, the corner on the reflective side surface 12 is set to be a right angle, so as to change the reflection angle of the light in the reflective cup 1, so that the brightness uniformity of the light source after being reflected is improved. The top end of the connecting surface between two adjacent reflecting cups 10 is a surface structure, so that when the reflection cover 1 is connected with the diffusion plate 4, the surface structure enables the top end of the connecting surface between two adjacent reflecting cups 10 to form surface connection with the diffusion plate 4, and the surface structure can be used as a supporting plane to provide better support for the diffusion plate 4.
As shown in fig. 3, in this embodiment, the present invention further provides a direct type backlight structure, which includes a circuit board 2, a light emitting device 3, a diffuser plate 4, and an optical film 5, and further includes the reflective cover 1 in the above technical solution; the circuit board 2, the light emitting element 3, the diffusion plate 4 and the optical film 5 are sequentially arranged, the reflection cover 1 is arranged between the circuit board 2 and the diffusion plate 4, and the light emitting element 3 is arranged in the light outlet hole 111 of the reflection cup 10. By changing the structure of the reflecting side surface 12, the reflecting angle of the reflecting side surface 12 to the light source emitted by the light emitting element 3 is increased, the brightness uniformity of the backlight module is improved, the lighting effect during the partition display can be adjusted, and the integral light emitting uniformity can be adjusted.
Specifically, the optical film 5 includes a diffusion film, a fluorescent film, a lower brightness enhancement film and an upper brightness enhancement film, the diffusion film, the fluorescent film, the lower brightness enhancement film and the upper brightness enhancement film are sequentially connected, and the diffusion film is connected with the diffusion plate 4.
Example two
As shown in fig. 4 and fig. 5, the difference between the second embodiment and the first embodiment is that, specifically, the top end of the connecting surface between two adjacent reflection cups 10 in the reflection cover 1 is an angle structure, so that when the reflection cover 1 is connected to the diffusion plate 4, the angle structure makes the top end of the connecting surface between two adjacent reflection cups 10 form a line connection with the diffusion plate 4, which can reduce the area of the reflection cups 10 blocking the light source from entering the diffusion plate 4, avoid the local brightness deficiency of the backlight module, and improve the overall light-emitting uniformity of the backlight module. Fig. 6 is a partial sectional view of a direct type backlight structure having the reflection cover 1 of the present embodiment.
EXAMPLE III
As shown in fig. 7 and 8, the difference between the first embodiment and the third embodiment is that, specifically, the corners on the reflecting side surfaces 12 in the reflective cover 1 are set to be arc-shaped corners, so as to increase the reflecting angle and make full use of the reflecting side surfaces 12. The corner shape of the reflecting side surface 12 of the stepped structure and/or the saw-toothed structure is changed, so that the reflecting angle of the light source in the reflecting cup 10 is increased, and the brightness uniformity of the light source after reflection is improved. Fig. 9 is a partial sectional view of a direct type backlight structure having the reflection cover 1 of the present embodiment.
Example four
As shown in fig. 10 and fig. 11, the difference between the fourth embodiment and the third embodiment is that, specifically, the top end of the connecting surface between two adjacent reflection cups 10 in the reflection cover 1 is an angle structure, so that when the reflection cover 1 is connected to the diffusion plate 4, the angle structure makes the top end of the connecting surface between two adjacent reflection cups 10 form a line connection with the diffusion plate 4, which can reduce the area of the reflection cups 10 blocking the light source from entering the diffusion plate 4, avoid the local brightness deficiency of the backlight module, and improve the overall light-emitting uniformity of the backlight module. Fig. 12 is a partial sectional view of a direct type backlight structure having the reflection cover 1 of the present embodiment.
The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (8)
1. A bowl, characterized in that it comprises a plurality of reflector cups (10), said reflector cups (10) comprising a reflective bottom surface (11) and a reflective side surface (12) connected to the reflective bottom surface (11), wherein:
the reflecting side surfaces (12) are arranged in a step-like structure and/or a sawtooth-like structure.
2. A reflector according to claim 1, characterized in that the corners on the reflecting side (12) are arranged as right angles and/or as arc-shaped corners.
3. The bowl according to claim 2, characterized in that several of said cups (10) are arranged in an array.
4. A reflector according to claim 3, characterized in that the top of the connecting surface between two adjacent reflector cups (10) is in an angle structure.
5. A reflector according to claim 3, characterized in that the top of the connecting surface between two adjacent reflector cups (10) is in a plane structure.
6. A reflector according to claim 4 or 5, characterized in that the bottom reflecting surface (11) is provided with a plurality of light-emitting holes (111).
7. A direct type backlight structure comprising a circuit board (2), a light emitting element (3), a diffuser plate (4), an optical film (5), characterized by further comprising a reflection cover (1) according to any one of claims 1 to 6;
the light-emitting device is characterized in that the circuit board (2), the light-emitting element (3), the diffusion plate (4) and the optical diaphragm (5) are sequentially arranged, the reflection cover (1) is arranged between the circuit board (2) and the diffusion plate (4), and the light-emitting element (3) is arranged in the light-emitting hole (111) of the reflection cup (10).
8. A direct type backlight structure according to claim 7, characterized in that the optical film (5) comprises a diffusion film, a fluorescent film, a lower brightness enhancement film and an upper brightness enhancement film, the diffusion film, the fluorescent film, the lower brightness enhancement film and the upper brightness enhancement film are sequentially connected in sequence, and the diffusion film is connected with the diffusion plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121053224.0U CN215416195U (en) | 2021-05-17 | 2021-05-17 | Reflector and direct type backlight structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121053224.0U CN215416195U (en) | 2021-05-17 | 2021-05-17 | Reflector and direct type backlight structure |
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| Publication Number | Publication Date |
|---|---|
| CN215416195U true CN215416195U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121053224.0U Active CN215416195U (en) | 2021-05-17 | 2021-05-17 | Reflector and direct type backlight structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246953A1 (en) * | 2022-06-23 | 2023-12-28 | 伟时电子股份有限公司 | Backlight module, and display device with same |
| CN117724268A (en) * | 2024-02-07 | 2024-03-19 | 深圳市华皓伟业光电有限公司 | Direct type backlight module and display device |
-
2021
- 2021-05-17 CN CN202121053224.0U patent/CN215416195U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246953A1 (en) * | 2022-06-23 | 2023-12-28 | 伟时电子股份有限公司 | Backlight module, and display device with same |
| CN117724268A (en) * | 2024-02-07 | 2024-03-19 | 深圳市华皓伟业光电有限公司 | Direct type backlight module and display device |
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