CN216956604U - Light guide plate positioning structure of liquid crystal film group - Google Patents
Light guide plate positioning structure of liquid crystal film group Download PDFInfo
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- CN216956604U CN216956604U CN202220855410.4U CN202220855410U CN216956604U CN 216956604 U CN216956604 U CN 216956604U CN 202220855410 U CN202220855410 U CN 202220855410U CN 216956604 U CN216956604 U CN 216956604U
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- light guide
- guide plate
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- crystal film
- positioning structure
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Abstract
The application provides a light guide plate positioning structure of a liquid crystal film group, and the plurality of elastic components are arranged between a back plate and a light guide plate, so that the light guide plate can be positioned, the gap between the light guide plate and a light bar at the light incident side is ensured, and the problems of uneven brightness, light leakage, LED lamp shadow and the like caused by the increase of the gap are avoided; but also can use the elastic property of the elastic sheet to reserve enough space for the thermal expansion of PMMA.
Description
Technical Field
The application relates to the technical field of liquid crystal film groups, in particular to a light guide plate positioning structure of a liquid crystal film group.
Background
The light guide plate location structure of the existing liquid crystal film group, in the side light-entering type backlight module, utilize the light guide plate to convert the point light source LED of income light into even area light source, the light guide plate, as the core device that the line light source converts the area light source, its design and positioning are one of the cores of the whole module, because common light guide plate is made by plastic material PMMA/MS, after it is influenced by environmental change, the body size takes place the inflation or shrink easily, so need reserve the expansion space of light guide plate in the module design, in order to ensure that the light guide plate can freely stretch out and draw back after the module is inside to be influenced by temperature change.
Therefore, there is a need for a light guide plate positioning structure of a liquid crystal film set that can position a light guide plate and ensure a gap between the light guide plate and a light incident side light bar.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, the present application provides a light guide plate positioning structure of a liquid crystal film set.
The following technical scheme is adopted in the application: a light guide plate positioning structure of a liquid crystal film group comprises a back plate, a light guide plate arranged on the back plate and an LED light bar arranged on the back plate and positioned on one side of the light guide plate, wherein an elastic part used for assembling and limiting the light guide plate is arranged between the other side of the back plate, far away from the LED light bar, and the light guide plate.
According to the light guide plate positioning structure of the liquid crystal film group, the LED lamp strip is arranged at the lower end of the light guide plate and is positioned on the inner side of the back plate, and the LED lamp strip is arranged opposite to the elastic component.
In the light guide plate positioning structure of the liquid crystal film group, the elastic members are provided in plurality and are arranged on the back plate at intervals.
The light guide plate positioning structure of the liquid crystal film group comprises a mounting plate and an elastic sheet, wherein the mounting plate is used for fixedly mounting the elastic sheet on the back plate, and the elastic sheet is arranged on the mounting plate.
In the light guide plate positioning structure of the liquid crystal film group, one end of the elastic sheet extends outwards to the light guide plate and bends towards the mounting plate.
In the light guide plate positioning structure of the liquid crystal film group, the elastic sheet is of a U-shaped structure.
According to the light guide plate positioning structure of the liquid crystal film group, the elastic pieces are arranged in plurality and are arranged on the mounting plate at intervals.
According to the light guide plate positioning structure of the liquid crystal film group, the supporting part for supporting the bottom of the light guide plate is arranged above the LED light bar on the back plate.
According to the light guide plate positioning structure of the liquid crystal film group, the gap between the light guide plate and the LED lamp strip is 0.3-0.5 mm.
Compared with the prior art, the beneficial effects of this application are as follows:
1. the application provides a light guide plate positioning structure of a liquid crystal film group, and the plurality of elastic components are arranged between a back plate and a light guide plate, so that the light guide plate can be positioned, the gap between the light guide plate and a light bar at the light incident side is ensured, and the problems of uneven brightness, light leakage, LED lamp shadow and the like caused by the increase of the gap are avoided; but also can utilize the elastic property of the elastic sheet to reserve enough space for the thermal expansion of PMMA.
2. The gap between the light guide plate and the LED lamp strip is 0.3-0.5mm, and the elastic piece is arranged on the back plate, so that the gap between the light guide plate and the lamp strip can be controlled to be about 0.4mm, and the problems of light leakage, LED lamp shadow, uneven screen brightness and the like caused by overlarge position size are avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.
Fig. 1 is a cross-sectional view of a light guide plate positioning structure of a liquid crystal film set according to the present application.
Fig. 2 is an exploded view of a light guide plate positioning structure of a liquid crystal film set according to the present application.
Fig. 3 is a schematic perspective view of the elastic member of the light guide plate positioning structure of the liquid crystal film set according to the present application.
Fig. 4 is a schematic view illustrating an assembly of the elastic member and the back plate of the light guide plate positioning structure of the liquid crystal film set according to the present application.
Detailed Description
As shown in fig. 1-3, a light guide plate positioning structure of a liquid crystal film set includes a back plate 1, a light guide plate 2, an LED light bar 3, and an elastic member 4.
The application provides a light guide plate positioning structure of a liquid crystal film group, which comprises a back plate 1, a light guide plate 2 arranged on the back plate 1 and an LED lamp strip 3 arranged on the back plate 1 and positioned on one side of the light guide plate 2, wherein an elastic part 4 for assembling and limiting the light guide plate 2 is arranged between the other side of the back plate 1, which is far away from the LED lamp strip 3, and the light guide plate 2; but also can utilize the elastic property of the elastic sheet to reserve enough space for the thermal expansion of PMMA.
Preferably, the LED lamp strips 3 are arranged at the lower end of the light guide plate 2 and are positioned at the inner side of the back plate 1 and the elastic part 4 are arranged relatively, the elastic pieces and the LED lamp strips are arranged relatively, when the module works, the elastic pieces can shrink by utilizing elastic characteristics to leave enough space for expansion of the light guide plate, when the module is powered off, the light guide plate shrinks along with temperature reduction, the elastic pieces recover to the original state, the light guide plate is recovered to the original position, and adverse phenomena of light leakage, LED lamp shadow, uneven screen brightness and the like caused by overlarge gap between the light guide plate and the LED lamp strips are avoided.
Preferably, the elastic members 4 are provided in plurality and arranged on the back plate 1 at intervals, so as to ensure that the light guide plate is expanded to leave a sufficient deformation space.
Preferably, the elastic member 4 includes a mounting plate 41 for fixedly mounting the elastic member on the back plate and an elastic sheet 42 disposed on the mounting plate 41, and by disposing the mounting plate on the elastic member, the elastic member can be fixed on the back plate without punching a hole on the light guide plate, so as to ensure the integrity of the light guide plate.
Preferably, one end of the elastic sheet 42 extends outward to the light guide plate 2 and bends toward the mounting plate 41.
Preferably, shell fragment 42 is U type structure, is U type structure through setting up the shell fragment, and when the module during operation, the shell fragment can utilize the elastic characteristic shrink, for the inflation of light guide plate leaves sufficient space, does when the module outage, and the light guide plate shrinks along with the temperature drop, and the shell fragment reconversion is with the light guide plate normal position, avoids appearing light leak, LED lamp shadow, bad phenomena such as screen luminance is inhomogeneous because of the clearance between light guide plate and the LED lamp strip is too big.
Preferably, the elastic sheets 42 are provided in plurality and arranged on the mounting plate 41 at intervals, so as to ensure the elastic potential energy of the elastic member.
Preferably, the back plate 1 is provided with a supporting part 11 above the LED light bar 3 for supporting the bottom of the light guide plate 2, and the supporting part for supporting the bottom of the light guide plate can ensure a gap between the light guide plate and the LED light bar.
Preferably, the gap between the light guide plate 2 and the LED light bar 3 is 0.3-0.5mm, and the elastic piece is arranged on the back plate, so that the gap between the light guide plate and the light bar can be controlled to be about 0.4mm optimally, and the problems of light leakage, LED light shadow, uneven screen brightness and the like caused by large size of the position are avoided
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a light guide plate location structure of liquid crystal film group, includes backplate (1), locates light guide plate (2) on backplate (1) and locating on backplate (1) and be located LED lamp strip (3) of light guide plate (2) one side, its characterized in that: an elastic part (4) used for limiting the assembly of the light guide plate (2) is arranged between the other side, far away from the LED light bar (3), of the back plate (1) and the light guide plate (2).
2. The light guide plate positioning structure of the liquid crystal film set as claimed in claim 1, wherein: the LED lamp strip (3) is arranged at the lower end of the light guide plate (2) and is positioned at the inner side of the back plate (1) and opposite to the elastic piece (4).
3. The light guide plate positioning structure of the liquid crystal film set as claimed in claim 1, wherein: the elastic pieces (4) are arranged in a plurality and are arranged on the back plate (1) at intervals.
4. The light guide plate positioning structure of the liquid crystal film set as claimed in claim 1, wherein: the elastic piece (4) comprises an installation plate (41) used for fixedly installing the elastic piece on the back plate and an elastic piece (42) arranged on the installation plate (41).
5. The light guide plate positioning structure of the liquid crystal film set as claimed in claim 4, wherein: one end of the elastic sheet (42) extends outwards to the light guide plate (2) and bends towards the mounting plate (41).
6. The light guide plate positioning structure of the liquid crystal film set as claimed in claim 5, wherein: the elastic sheet (42) is of a U-shaped structure.
7. The light guide plate positioning structure of the liquid crystal film set as claimed in claim 4, wherein: the elastic pieces (42) are arranged in a plurality and are arranged on the mounting plate (41) at intervals.
8. The light guide plate positioning structure of the liquid crystal film set as claimed in claim 1, wherein: the back plate (1) is arranged above the LED lamp strip (3) and is provided with a supporting part (11) used for supporting the bottom of the light guide plate (2).
9. The light guide plate positioning structure of the liquid crystal film set as claimed in claim 1, wherein: the gap between the light guide plate (2) and the LED lamp strip (3) is 0.3-0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220855410.4U CN216956604U (en) | 2022-04-13 | 2022-04-13 | Light guide plate positioning structure of liquid crystal film group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220855410.4U CN216956604U (en) | 2022-04-13 | 2022-04-13 | Light guide plate positioning structure of liquid crystal film group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216956604U true CN216956604U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220855410.4U Active CN216956604U (en) | 2022-04-13 | 2022-04-13 | Light guide plate positioning structure of liquid crystal film group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216956604U (en) |
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2022
- 2022-04-13 CN CN202220855410.4U patent/CN216956604U/en active Active
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