CN220627317U - Backlight structure for preventing backlight film from wrinkling - Google Patents
Backlight structure for preventing backlight film from wrinkling Download PDFInfo
- Publication number
- CN220627317U CN220627317U CN202321792931.0U CN202321792931U CN220627317U CN 220627317 U CN220627317 U CN 220627317U CN 202321792931 U CN202321792931 U CN 202321792931U CN 220627317 U CN220627317 U CN 220627317U
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- Prior art keywords
- backlight
- film
- fixing frame
- brightness enhancement
- light shielding
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- 239000000853 adhesive Substances 0.000 claims abstract description 43
- 230000001070 adhesive effect Effects 0.000 claims abstract description 43
- 239000002390 adhesive tape Substances 0.000 claims abstract description 26
- 230000037303 wrinkles Effects 0.000 claims description 14
- 238000009792 diffusion process Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 5
- 230000008602 contraction Effects 0.000 abstract description 5
- 238000005282 brightening Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Liquid Crystal (AREA)
Abstract
The utility model discloses a backlight structure for preventing backlight film from wrinkling, which comprises a first fixing frame, a backlight film assembly and a shading adhesive tape, wherein a containing cavity is formed in the first fixing frame, and limit protruding parts are arranged on the side walls of the periphery of the containing cavity; the backlight film component comprises an upper brightness enhancement film, and is accommodated in the accommodating cavity; the light shielding adhesive tape is attached to the limiting protruding portion, one side face, facing the upper brightening film, of the light shielding adhesive tape is attached with one-sided adhesive, one side face, facing the upper brightening film, of the light shielding adhesive tape is provided with a non-adhesive face, and one-sided adhesive is used for separating the light shielding adhesive tape and the upper brightening film. According to the utility model, the single-sided adhesive is added on one side surface of the shading adhesive tape facing the upper brightness enhancement film, and one side surface of the single-sided adhesive facing the upper brightness enhancement film is set to be a non-adhesive surface, so that the shading adhesive tape and the upper brightness enhancement film can be separated through the single-sided adhesive, and the problem that the shading adhesive tape and the upper brightness enhancement film are wrinkled due to different expansion and contraction rates at high temperature is avoided.
Description
Technical Field
The present utility model relates to a backlight structure for a display screen, and more particularly, to a backlight structure for preventing a backlight film from being wrinkled.
Background
The backlight structure is a module in the display screen and is used for providing a light source for the display screen, in the reliability experiment of the backlight structure production process, the bad duty ratio of the backlight film fold is highest, the backlight film fold can lead to uneven backlight brightness, poor appearance of a backlight visual area, further uneven display of the display module is caused, the display effect is seriously influenced, and in the existing backlight structure, the backlight film fold is commonly found in the diffusion film fold, the upper and lower brightness enhancement film fold and the like. For example, in the conventional backlight structure, there is an adhesive relationship between the upper brightness enhancement film and the light shielding tape, and at high temperature, the upper brightness enhancement film and the light shielding tape have different shrinkage rates, so that the expansion and contraction degrees of the upper brightness enhancement film and the light shielding tape are not uniform, and the upper brightness enhancement film is liable to wrinkle.
Therefore, how to prevent the backlight film from being wrinkled and avoid uneven display of the display module is a technical problem that needs to be solved by the research and development personnel in the field.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a backlight structure for preventing the backlight film from wrinkling, so that the backlight film is prevented from wrinkling, and the display effect and the display quality of a display module are improved.
The aim of the utility model is realized by the following technical scheme:
a backlight structure for preventing wrinkles of a backlight film, comprising: the backlight module comprises a first fixing frame, a backlight film assembly and a shading adhesive tape, wherein a containing cavity is formed in the first fixing frame, and limiting protruding parts are arranged on the side walls of the periphery of the containing cavity; the backlight film assembly comprises an upper brightness enhancement film, and when the backlight film assembly is accommodated in the accommodating cavity, the upper brightness enhancement film is aligned with the limiting protruding part; the light shielding adhesive tape is attached to the limiting protruding portion, one side surface of the light shielding adhesive tape, facing the upper brightness enhancement film, is attached with a single-sided adhesive, one side surface of the single-sided adhesive, facing the upper brightness enhancement film, is a non-adhesive surface, and the single-sided adhesive is used for separating the light shielding adhesive tape and the upper brightness enhancement film.
In one embodiment, the backlight module further comprises a second fixing frame, the second fixing frame is located on one side of the first fixing frame, one side face of the backlight module abuts against one side face of the second fixing frame, and the second fixing frame is used for limiting the backlight module.
In one embodiment, a limiting cavity is formed in one side, facing the first fixing frame, of the second fixing frame, and the side wall of the limiting cavity abuts against the side wall of the accommodating cavity.
In one embodiment, the first fixing frame is a glue frame.
In one embodiment, the backlight film assembly further includes a lower brightness enhancement film, a diffusion film, a light guide plate and a reflective film, wherein the upper brightness enhancement film, the lower brightness enhancement film and the diffusion film are stacked in sequence in the direction of the second fixing frame, and one side of the reflective film abuts against one side of the second fixing frame.
In one embodiment, the shading tape is in a ring-shaped structure.
In one embodiment, the single-sided adhesive is in a ring-like structure.
In one embodiment, the single-sided adhesive has a thickness of 0.03-0.10mm.
In one embodiment, the single-sided adhesive has a thickness of 0.03mm.
In one embodiment, a bump is disposed on one side of the light shielding tape.
Compared with the prior art, the utility model has at least the following advantages:
according to the backlight structure for preventing the backlight film from being wrinkled, the first fixing frame, the backlight film component and the light shielding adhesive tape are arranged, the single-sided adhesive is added to the side face, facing the upper brightness enhancement film, of the light shielding adhesive tape, and meanwhile the side face, facing the upper brightness enhancement film, of the light shielding adhesive tape is set to be a non-adhesive face, so that the light shielding adhesive tape and the upper brightness enhancement film can be separated through the single-sided adhesive, the light shielding adhesive tape and the upper brightness enhancement film are prevented from being adhered together, the light shielding effect of the light shielding adhesive tape is ensured, and the problem that the upper brightness enhancement film is wrinkled due to different expansion and contraction rates of the light shielding adhesive tape and the upper brightness enhancement film at high temperature is avoided, and the display effect and the display quality of the display module are improved.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described.
FIG. 1 is a schematic diagram of a backlight structure for preventing wrinkles of a backlight film according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a partial enlarged structure at A in FIG. 1;
FIG. 3 is a schematic view of a partial enlarged structure at B of FIG. 2;
fig. 4 is a schematic view of a light shielding tape and a single-sided adhesive structure of the backlight structure of fig. 1 for preventing wrinkles of the backlight film.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings.
Referring to fig. 1, 2, 3 and 4, a backlight structure 10 for preventing wrinkles of a backlight film includes: the backlight module comprises a first fixing frame 100, a backlight module 200 and a shading adhesive tape 300, wherein a containing cavity is formed in the first fixing frame 100, and limiting protruding portions 110 are arranged on the side walls of the periphery of the containing cavity; the backlight film assembly 200 includes an upper brightness enhancement film 210, and when the backlight film assembly 200 is accommodated in the accommodating cavity, the upper brightness enhancement film 210 is aligned with the limiting boss 110; the light shielding tape 300 is attached to the limiting boss 110, a single-sided adhesive 310 is attached to a side surface of the light shielding tape 300 facing the upper brightness enhancement film 210, a non-adhesive surface 311 is provided on a side surface of the single-sided adhesive 310 facing the upper brightness enhancement film 210, and the single-sided adhesive 310 is used for separating the light shielding tape 300 and the upper brightness enhancement film 210.
In the conventional backlight structure, the peripheral edge of the upper brightness enhancement film is adhered to the light shielding tape, so that the upper brightness enhancement film 210 is wrinkled due to different shrinkage rates and inconsistent expansion and contraction degrees of the upper brightness enhancement film and the light shielding tape under the high temperature condition of the reliability test. Therefore, the utility model increases the single-sided adhesive 310 on the side surface of the shading tape 300 facing the upper intensifying film 210, and simultaneously sets the single-sided adhesive 310 on the side surface facing the upper intensifying film 210 as a non-adhesive surface 311, so that the shading tape 300 and the upper intensifying film 210 can be separated by the single-sided adhesive 310, the shading tape 300 and the upper intensifying film 210 are prevented from being adhered together, and the problem that the upper intensifying film is wrinkled due to the difference of expansion and contraction rates of the shading tape 300 and the upper intensifying film 210 at high temperature is solved;
specifically, the first fixing frame 100 is used for limiting the backlight film assembly 200, in this embodiment, the first fixing frame 100 is a glue frame, and can be integrally formed by an injection mold, and the outer side of the light-shielding adhesive tape 300 is partially attached to the side wall of the limiting protruding portion 110, that is, the single-sided adhesive is only disposed at the contact portion of the light-shielding adhesive tape and the upper brightness enhancement film, and the contact portion of the light-shielding adhesive tape and the glue frame is not added with the single-sided adhesive, so that the light-shielding adhesive and the glue frame can be bonded together; in this embodiment, the light-shielding tape 300 has a ring-shaped structure, and correspondingly, the single-sided adhesive 310 has a ring-shaped structure, the single-sided adhesive 310 is attached to the inner side of the light-shielding tape 300, and the single-sided adhesive 310 separates the light-shielding tape 300 from the upper brightness enhancement film 210, and in this embodiment, the single-sided adhesive 310 and the light-shielding tape 300 both use PET (polyester) as substrate layers; further, since the gap between the upper light enhancement film 210 and the light shielding tape 300 is usually 0.03 to 0.10mm, in this embodiment, the thickness of the single-sided adhesive is 0.03 to 0.10mm, preferably, the thickness of the single-sided adhesive is 0.03mm; further, in the present embodiment, a protrusion 320 is provided on one side of the light shielding tape 300, through which the light shielding tape can be conveniently attached to the limit protrusion 110 of the first fixing frame 100.
In an embodiment, the backlight structure 10 for preventing the backlight film from wrinkling further includes a second fixing frame 400, the second fixing frame 400 is located on one side of the first fixing frame 100, one side of the backlight film assembly 200 abuts against one side of the second fixing frame 400, and the second fixing frame 400 is used for limiting the backlight film assembly 200.
It should be noted that, in the present embodiment, the second fixing frame 400 is an iron frame, and the limiting fixation of the backlight film assembly 200 is achieved through the combination of the first fixing frame 100 and the second fixing frame 400; in this embodiment, a limiting cavity is formed on one side of the second fixing frame 400 facing the first fixing frame 100, the side wall of the limiting cavity abuts against the side wall of the accommodating cavity, after the first fixing frame 100 is combined with the second fixing frame 400, the limiting cavity and the accommodating cavity form a combined cavity, and the backlight film assembly 200 is located in the combined cavity, so that limiting and fixing of the backlight film assembly 200 are achieved.
Further, the backlight assembly 200 further includes a lower brightness enhancement film 220, a diffusion film 230, a light guide plate 240 and a reflective film 250, wherein the upper brightness enhancement film 210, the lower brightness enhancement film 220 and the diffusion film 230 are stacked in sequence in the direction of the second fixing frame 400, and the light guide plate 240 and the reflective film 250 are disposed in contact with one side of the second fixing frame 400, wherein the combination of the upper brightness enhancement film 210, the lower brightness enhancement film 220 and the diffusion film 230 can uniformly diffuse light, so as to increase and decrease front brightness.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model, which are within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A backlight structure for preventing wrinkles of a backlight film, comprising:
the first fixing frame is provided with a containing cavity, and limiting protruding parts are arranged on the side walls around the containing cavity;
the backlight film assembly comprises an upper brightness enhancement film, and when the backlight film assembly is accommodated in the accommodating cavity, the upper brightness enhancement film is aligned with the limiting protruding part; and
The light shielding adhesive tape is attached to the limiting protruding portion, one side surface of the light shielding adhesive tape, facing the upper brightness enhancement film, is attached with a single-sided adhesive, one side surface of the single-sided adhesive, facing the upper brightness enhancement film, is a non-adhesive surface, and the single-sided adhesive is used for separating the light shielding adhesive tape from the upper brightness enhancement film.
2. The backlight structure for preventing wrinkles of a backlight film according to claim 1, further comprising a second fixing frame, wherein the second fixing frame is located on one side of the first fixing frame, one side of the backlight film assembly abuts against one side of the second fixing frame, and the second fixing frame is used for limiting the backlight film assembly.
3. The backlight structure for preventing wrinkles of a backlight film according to claim 2, wherein a limiting cavity is formed on one side of the second fixing frame facing the first fixing frame, and a side wall of the limiting cavity abuts against a side wall of the accommodating cavity.
4. A backlight structure for preventing wrinkles of a backlight film according to claim 3, wherein the first fixing frame is a glue frame.
5. The backlight structure according to claim 4, wherein the backlight assembly further comprises a lower light enhancement film, a diffusion film, a light guide plate, and a reflection film, wherein the upper light enhancement film, the lower light enhancement film, and the diffusion film are stacked in order in the direction of the second fixing frame, and the light guide plate and the reflection film are disposed with one side of the reflection film abutting against one side of the second fixing frame.
6. The backlight structure for preventing wrinkles of a backlight film according to claim 1, wherein the light shielding tape has a ring-like structure.
7. The backlight structure for preventing wrinkles of a backlight film according to claim 6, wherein said single-sided adhesive is in a ring-like structure.
8. The backlight structure for preventing wrinkles of a backlight film according to claim 1, wherein the thickness of the single-sided adhesive is 0.03-0.10mm.
9. The backlight structure for preventing wrinkles of a backlight film according to claim 8, wherein the thickness of the single-sided adhesive is 0.03mm.
10. The backlight structure for preventing wrinkles of a backlight film according to claim 1, wherein a bump is provided on one side of the light shielding tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321792931.0U CN220627317U (en) | 2023-07-07 | 2023-07-07 | Backlight structure for preventing backlight film from wrinkling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321792931.0U CN220627317U (en) | 2023-07-07 | 2023-07-07 | Backlight structure for preventing backlight film from wrinkling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220627317U true CN220627317U (en) | 2024-03-19 |
Family
ID=90227312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321792931.0U Active CN220627317U (en) | 2023-07-07 | 2023-07-07 | Backlight structure for preventing backlight film from wrinkling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220627317U (en) |
-
2023
- 2023-07-07 CN CN202321792931.0U patent/CN220627317U/en active Active
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