CN215730574U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN215730574U CN215730574U CN202121419720.3U CN202121419720U CN215730574U CN 215730574 U CN215730574 U CN 215730574U CN 202121419720 U CN202121419720 U CN 202121419720U CN 215730574 U CN215730574 U CN 215730574U
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- led lamp
- backlight module
- light guide
- guide plate
- frame
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Abstract
The utility model discloses a backlight module and a display device, wherein the backlight module comprises a rubber frame, an LED lamp, a light guide plate, a reflector plate and an optical diaphragm group, the rubber frame is enclosed to form an accommodating cavity, the LED lamp, the light guide plate and the optical diaphragm group are accommodated in the accommodating cavity, and the LED lamp is positioned at one end, facing the rubber frame, of the light guide plate; in the thickness direction of the light guide plate, the optical membrane group is arranged on one side of the light guide plate in a stacked mode, the reflector layer is arranged on the other side of the light guide plate in a stacked mode, the LED lamp and the reflector plate are arranged in the thickness direction at intervals, and the projection of the LED lamp and the projection of the reflector plate in the thickness direction are not overlapped or partially overlapped, so that a radiating gap used for radiating is formed between the edge of the reflector plate and the rubber frame.
Description
Technical Field
The utility model relates to the technical field of backlight modules, in particular to a backlight module and a display device.
Background
Along with market demand upgrading, the user also becomes higher and higher to the requirement of cell-phone heat dispersion, current be applied to the backlight unit of cell-phone, the reflector plate lid is located on the LED lamp, when the cell-phone charges or cell-phone live time is longer, the LED lamp generates heat and can't dispel the heat, like the attached graphite flake that is used for the heat dissipation in the position that corresponds the LED lamp on the reflector plate, because of the reflector plate is thinner, can observe the attached position of graphite flake and be the shadow form from one side that the LED lamp kept away from the reflector plate, the event can not adopt the radiating mode of attached graphite flake on the reflector plate, current backlight unit LED lamp dispels the heat badly, backlight unit heat dispersion leads to the cell-phone to appear generating heat and scald the phenomenon, user experience feels poor.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a backlight module and a display device, and aims to solve the problem that the backlight module is poor in heat dissipation performance.
In order to achieve the above object, the present invention provides a backlight module, which includes a rubber frame, an LED lamp, a light guide plate, a reflector plate, and an optical film set, wherein the rubber frame is surrounded to form an accommodating cavity, the LED lamp, the light guide plate, and the optical film set are accommodated in the accommodating cavity, and the LED lamp is located at one end of the light guide plate facing the rubber frame; in the thickness direction of the light guide plate, the optical film group is arranged on one side of the light guide plate in a stacked mode, the reflector plate is arranged on the other side of the light guide plate in a stacked mode, the LED lamp and the reflector plate are arranged in the thickness direction at intervals, and the projection of the LED lamp and the projection of the reflector plate in the thickness direction are not overlapped or partially overlapped, so that a heat dissipation gap used for heat dissipation is formed between the edge of the reflector plate and the rubber frame.
Preferably, the projection of the LED lamp and the reflector plate in the thickness direction are partially overlapped, the projection area of the LED lamp is C1, and the projection area of a partially overlapped region is C2, 1/3 is not more than C2/C1 is not more than 1/2.
Preferably, glue and be close to on the frame the position of LED lamp is provided with the piece that bonds, bond with the reflector plate interval sets up, just the piece that bonds avoids heat dissipation clearance, backlight unit still includes the protecting film, the one end of protecting film with the piece that bonds, the other end subsides of protecting film are located on the reflector plate.
Preferably, the backlight module further includes a flexible circuit board, the flexible circuit board is connected to the rubber frame, the flexible circuit board is located on one side of the LED lamp away from the reflector plate, the LED lamp is electrically connected to the flexible circuit board, and two ends of the LED lamp are respectively connected to the light guide plate and the rubber frame.
Preferably, one side of the light guide plate, which is away from the reflector plate, is provided with a slope, the slope is provided with an inclined surface, the inclined surface is arranged along the thickness direction in a back-to-back manner, the LED lamp is bonded with the inclined surface and the rubber frame through a rubber strip, and the flexible circuit board is bonded on the rubber strip.
Preferably, the optical film group comprises a diffusion film, and the diffusion film is stacked on one side of the light guide plate, which is far away from the reflection sheet.
Preferably, the optical film group further comprises a first brightness enhancement film and a second brightness enhancement film, the first brightness enhancement film is arranged on one side of the diffusion film, which is far away from the light guide plate, in a laminated manner, and the second brightness enhancement film is arranged on one side of the first brightness enhancement film, which is far away from the diffusion film, in a laminated manner.
Preferably, one side of the rubber frame, which is away from the reflector plate, is provided with a light shielding frame, and the light shielding frame is matched with the rubber frame in shape.
Preferably, one side of the light shielding frame, which is far away from the rubber frame, is provided with a protective sheet in a stacked manner.
The utility model also provides a display device which comprises the backlight module.
In the backlight module, the rubber frame is enclosed to form the accommodating cavity for accommodating the LED lamp, the light guide plate and the optical film group, the LED lamp is arranged between the inner side wall of the rubber frame and the light guide plate, the optical film group, the light guide plate and the reflector plate are sequentially stacked in the thickness direction, the LED lamp and the reflector plate are arranged at intervals in the thickness direction, the projection of the LED lamp and the projection of the reflector plate in the thickness direction are not overlapped or partially overlapped, a heat dissipation gap is formed between the edge of the reflector plate and the inner side wall of the rubber frame, when a mobile phone is charged or the mobile phone is used for a long time, the LED lamp generates heat, the heat dissipation gap is used for heat dissipation of the LED lamp, the heat dissipation condition of the LED lamp is good, the heat dissipation performance of the backlight module is improved, the phenomenon that the mobile phone generates heat and scalds due to poor heat dissipation of the LED lamp is prevented, and the user experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a backlight module according to an embodiment of the utility model;
FIG. 2 is an enlarged view of area A of FIG. 1;
FIG. 3 is a schematic view of a partial structure of a backlight module according to an embodiment of the present invention;
fig. 4 is an enlarged schematic view of the region B in fig. 3.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
40 | |
| 10 | |
50 | |
| 11 | Containing |
51 | |
| 12 | Adhesive member | 52 | A first |
| 13 | |
53 | Second |
| 20 | |
60 | |
| 21 | |
70 | |
| 30 | |
80 | |
| 31 | |
81 | Protective sheet |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The description of the orientations of "up", "down", "left", "right", etc. in the present invention, with reference to the orientation shown in fig. 3, is merely used to explain the relative positional relationship between the components in the attitude shown in fig. 3, and if the particular attitude is changed, the directional indication is changed accordingly.
The utility model provides a backlight module.
In the backlight module 100 of this embodiment, the backlight module 100 includes a rubber frame 10, an LED lamp 20, a light guide plate 30, a reflector 40, and an optical film group 50, the rubber frame 10 is surrounded to form an accommodating cavity 11, the LED lamp 20, the light guide plate 30, and the optical film group 50 are accommodated in the accommodating cavity 11, and the LED lamp 20 is located at one end of the light guide plate 30 facing the rubber frame 10; in the thickness direction of the light guide plate 30, the optical film group 50 is stacked on one side of the light guide plate 30, the reflective sheet 40 is stacked on the other side of the light guide plate 30, the LED lamp 20 and the reflective sheet 40 are arranged at intervals in the thickness direction, and the projection of the LED lamp 20 and the reflective sheet 40 in the thickness direction is not overlapped or partially overlapped, so that a heat dissipation gap 60 for dissipating heat is formed between the edge of the reflective sheet 40 and the rubber frame 10. It should be noted that the backlight module 100 of the present invention can be applied to a mobile phone, a television, a computer or other display devices, and in this embodiment, the application of the backlight module 100 to a mobile phone is only taken as an example for description.
As shown in fig. 1 to 4, the plastic frame 10 encloses an accommodating cavity 11 for accommodating the LED lamp 20, the light guide plate 30 and the optical film set 50, the LED lamp 20 is disposed between the inner side wall of the plastic frame 10 and the left end of the light guide plate 30, the thickness direction of the light guide plate 30 is the vertical direction, the optical film set 50, the light guide plate 30 and the reflective sheet 40 are sequentially stacked in the thickness direction, that is, the optical film set 50, the light guide plate 30 and the reflective sheet 40 are sequentially stacked from top to bottom, and the LED lamp 20 and the reflective sheet 40 are disposed at an interval in the thickness direction.
In an embodiment, the projections of the LED lamp 20 and the reflector 40 in the thickness direction are not overlapped, that is, the left end of the reflector 40 is located at the right end of the LED lamp 20, a heat dissipation gap 60 is formed between the edge of the reflector 40 and the inner side wall of the rubber frame 10, when the mobile phone is charged or the mobile phone is used for a long time, the LED lamp 20 generates heat, the heat dissipation gap 60 is used for dissipating heat of the LED lamp 20, the heat dissipation condition of the LED lamp 20 is good, the heat dissipation performance of the backlight module 100 is improved, the phenomenon that the mobile phone generates heat and is scalded due to poor heat dissipation of the LED lamp 20 is prevented, and the user experience is improved.
In another embodiment, the projections of the LED lamp 20 and the reflector 40 in the thickness direction are partially overlapped, that is, the left end of the reflector 40 extends out of the light guide plate 30, the reflector 40 is partially located below the LED lamp 20, and the area of the reflector 40 located below the LED lamp 20 is not completely overlapped with the LED lamp 20, so that a heat dissipation gap 60 is formed between the edge of the reflector 40 and the inner side wall of the rubber frame 10, which not only improves the heat dissipation performance of the backlight module 100, but also improves the light reflection effect because the reflector 40 is partially located below the LED lamp 20.
In the embodiment, as shown in fig. 3 and 4, the projection of the LED lamp 20 and the reflector 40 in the thickness direction partially overlaps, the projection area of the LED lamp 20 is C1, and the projection area of the partially overlapping region is C2, 1/3 ≦ C2/C1 ≦ 1/2. The left end of the reflector 40 extends out of the light guide plate 30, the reflector 40 is partially positioned below the LED lamp 20, the region of the reflector 40 positioned below the LED lamp 20 is a partially overlapped region, the projection area of the partially overlapped region in the thickness direction is C2, the projection area of the LED lamp 20 in the thickness direction is C1, C2/C1 is not less than 1/3 and not more than 1/2, a heat dissipation gap 60 for dissipating heat of the LED lamp 20 is formed between the edge of the reflector 40 and the rubber frame 10, the heat dissipation performance of the backlight module 100 is improved, the reflector 40 is partially positioned below the LED lamp 20, and the light reflection effect is improved.
In a preferred embodiment, C2/C1 is 1/3, that is, the area ratio between the projected area C2 of the local overlapping region and the projected area C1 of the LED lamp 20 is 1:3, so that the LED lamp 20 has an optimal light reflection effect while ensuring good heat dissipation.
In this embodiment, the adhesive member 12 is disposed on the adhesive frame 10 near the LED lamp 20, the adhesive member 12 and the reflective sheet 40 are spaced apart from each other, the adhesive member 12 avoids the heat dissipation gap 60, the backlight module 100 further includes a protective film 13, one end of the protective film 13 is adhered to the adhesive member 12, and the other end of the protective film 13 is attached to the reflective sheet 40. As shown in fig. 1 to 4, the adhesive member 12 is adhered to the lower side of the adhesive frame 10, and the adhesive member 12 is located at one end of the adhesive frame 10 close to the LED lamp 20, the adhesive member 12 is disposed to avoid the heat dissipation gap 60, so as to ensure the smoothness of the heat dissipation gap 60, the protective film 13 is adhered to the lower side of the adhesive member 12, the protective film 13 extends toward the reflector 40, the right end of the protective film 13 is adhered to the lower side of the reflector 40, the protective film 13 plays roles of protecting the LED lamp 20 and preventing dust, and effectively prevents dust from entering the accommodating cavity 11 through the heat dissipation gap 60, and understandably, the protective film 13 is torn off when the backlight module 100 is put into use.
The backlight module 100 of this embodiment further includes a flexible circuit board 70, the flexible circuit board 70 is connected to the rubber frame 10, the flexible circuit board 70 is located on a side of the LED lamp 20 away from the reflector 40, the LED lamp 20 is electrically connected to the flexible circuit board 70, and two ends of the LED lamp 20 are respectively connected to the light guide plate 30 and the rubber frame 10; one side that light guide plate 30 deviates from reflector plate 40 is provided with slope 31, and slope 31 has an inclined plane, and the inclined plane sets up along the slope of thickness direction dorsad reflector plate 40, and LED lamp 20 passes through adhesive tape 21 and bonds with inclined plane and gluey frame 10, and flexible circuit board 70 bonds on adhesive tape 21.
As shown in fig. 3 and 4, a slope 31 is disposed on the upper side of the light guide plate 30, the slope 31 has an inclined surface which is inclined from bottom to top in a direction close to the LED lamp 20, the LED lamp 20 is adhered to the inclined surface and the rubber frame 10 through a rubber strip 21, the flexible circuit board 70 is disposed above the LED lamp 20 and electrically connected to the LED lamp 20, the lower side of the rubber strip 21 is adhered to the inclined surface, and the flexible circuit board 70 is adhered to the upper side of the rubber strip 21. The adhesive tape 21 is used for connecting the LED lamp 20 and the flexible circuit board 70 with the light guide plate 30, and is stable in structure and convenient and quick to install.
In this embodiment, the optical film set 50 includes a diffusion film 51, and the diffusion film 51 is stacked on one side of the light guide plate 30 away from the reflective sheet 40; the optical film set 50 further includes a first brightness enhancement film 52 and a second brightness enhancement film 53, wherein the first brightness enhancement film 52 is stacked on one side of the diffusion film 51 away from the light guide plate 30, and the second brightness enhancement film 53 is stacked on one side of the first brightness enhancement film 52 away from the diffusion film 51.
As shown in fig. 3, the optical film set 50 includes a second brightness enhancement film 53, a first brightness enhancement film 52 and a diffusion film 51 stacked from top to bottom in sequence, wherein the diffusion film 51 is stacked on the upper side of the light guide plate 30, the diffusion film 51 plays a role of correcting the light diffusion angle, the diffusion film 51 can correct the light to form a uniform surface light source to achieve the effect of optical diffusion, and the light source emitted by the LED lamp 20 has the advantages of large area, good uniformity and stable chromaticity after being diffused by the diffusion film 51; the surfaces of the first brightness enhancement film 52 and the second brightness enhancement film 53 are both provided with a plurality of rhombic grooves for improving the light brightness, so that prism patterns are formed on the surfaces of the first brightness enhancement film 52 and the second brightness enhancement film 53, the prism patterns on the first brightness enhancement film 52 and the prism patterns on the second brightness enhancement film 53 are orthogonal to each other, and the brightness of the backlight module 100 is further improved.
In this embodiment, a light shielding frame 80 is disposed on a side of the rubber frame 10 away from the reflector 40, and the light shielding frame 80 is matched with the rubber frame 10 in shape; the side of the light shielding frame 80 away from the rubber frame 10 is stacked with a protective sheet 81. As shown in fig. 3 and 4, the light-shielding frame 80 is disposed on the upper side of the plastic frame 10, and the light-shielding frame 80 is matched with the plastic frame 10 in shape, in a preferred embodiment, the light-shielding frame 80 and the plastic frame 10 are both rectangular frames, the light-shielding frame 80 plays a role of shielding light, so as to effectively prevent the light from escaping from the side, further improve the brightness of the backlight module 100, and the upper side of the light-shielding frame 80 is further provided with a protection sheet 81, the protection sheet 81 plays a role of protecting the flexible circuit board 70, and the structure is stable and reliable.
The present invention further provides a display device, which includes the backlight module 100 as described above, and the specific structure of the backlight module 100 refers to the above embodiments, and since the display device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not repeated herein.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A backlight module is characterized by comprising a rubber frame, an LED lamp, a light guide plate, a reflector plate and an optical diaphragm group, wherein the rubber frame is enclosed to form an accommodating cavity; in the thickness direction of the light guide plate, the optical film group is arranged on one side of the light guide plate in a stacked mode, the reflector plate is arranged on the other side of the light guide plate in a stacked mode, the LED lamp and the reflector plate are arranged in the thickness direction at intervals, and the projection of the LED lamp and the projection of the reflector plate in the thickness direction are not overlapped or partially overlapped, so that a heat dissipation gap used for heat dissipation is formed between the edge of the reflector plate and the rubber frame.
2. The backlight module as claimed in claim 1, wherein the LED lamp partially overlaps the reflector sheet in the thickness direction, the LED lamp has a projected area of C1, and the partially overlapped region has a projected area of C2, 1/3 ≦ C2/C1 ≦ 1/2.
3. The backlight module as claimed in claim 1, wherein an adhesive member is disposed on the adhesive frame at a position close to the LED lamp, the adhesive member is spaced from the reflective sheet, and the adhesive member avoids the heat dissipation gap, the backlight module further comprises a protective film, one end of the protective film is adhered to the adhesive member, and the other end of the protective film is attached to the reflective sheet.
4. The backlight module as claimed in claim 1, wherein the backlight module further comprises a flexible circuit board, the flexible circuit board is connected to the plastic frame and located on a side of the LED lamp away from the reflective sheet, the LED lamp is electrically connected to the flexible circuit board, and two ends of the LED lamp are respectively connected to the light guide plate and the plastic frame.
5. The backlight module as claimed in claim 4, wherein a slope is disposed on a side of the light guide plate facing away from the reflective sheet, the slope has an inclined surface, the inclined surface is inclined away from the reflective sheet along the thickness direction, the LED lamp is bonded to the inclined surface and the adhesive frame through an adhesive tape, and the flexible printed circuit board is bonded to the adhesive tape.
6. The backlight module according to any one of claims 1-5, wherein the optical film group comprises a diffusion film, and the diffusion film is stacked on a side of the light guide plate facing away from the reflective sheet.
7. The backlight module as claimed in claim 6, wherein the optical film assembly further comprises a first brightness enhancement film and a second brightness enhancement film, the first brightness enhancement film is stacked on a side of the diffusion film facing away from the light guide plate, and the second brightness enhancement film is stacked on a side of the first brightness enhancement film facing away from the diffusion film.
8. The backlight module according to any one of claims 1-5, wherein a light shielding frame is disposed on a side of the plastic frame facing away from the reflector, and the light shielding frame is matched with the plastic frame in shape.
9. The backlight module as claimed in claim 8, wherein a protection sheet is stacked on a side of the light shielding frame facing away from the adhesive frame.
10. A display device, characterized in that the display device comprises a backlight module according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121419720.3U CN215730574U (en) | 2021-06-24 | 2021-06-24 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121419720.3U CN215730574U (en) | 2021-06-24 | 2021-06-24 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215730574U true CN215730574U (en) | 2022-02-01 |
Family
ID=80044872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121419720.3U Active CN215730574U (en) | 2021-06-24 | 2021-06-24 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215730574U (en) |
-
2021
- 2021-06-24 CN CN202121419720.3U patent/CN215730574U/en active Active
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