CN215117083U

CN215117083U - Liquid crystal display module and terminal

Info

Publication number: CN215117083U
Application number: CN202121041676.7U
Authority: CN
Inventors: 徐金炎; 杜军红; 葛振纲
Original assignee: Shanghai Longcheer Technology Co Ltd
Current assignee: Shanghai Longcheer Technology Co Ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-12-10
Anticipated expiration: 2031-05-14

Abstract

The application aims to provide a liquid crystal display module and a terminal. The backlight source assembly is mainly composed of a light source body, a light guide plate, a sealing element arranged at the bottom of the light source body and the like. The sealing element is used for being matched with the liquid crystal panel main body and the light guide plate so as to enclose the light source body in the sealing space. And the sealing element is provided with a heat dissipation hole in the area opposite to the back of the light source body. The seal is disposed proximate to the bottom of the light source body. Compared with the prior art, the liquid crystal display module and the terminal can improve the heat dissipation performance of the liquid crystal display module and do not influence the normal use of the liquid crystal display module.

Description

Liquid crystal display module and terminal

Technical Field

The utility model relates to the field of communication, especially, relate to a liquid crystal display module assembly and terminal.

Background

A liquid crystal display module, which is a commonly used component in mobile terminals such as mobile phones and tablet computers, generally comprises a liquid crystal display PANEL (PANEL), a backlight source (BLU) for providing a surface light source, a flexible circuit board (FPC) for connecting a main board of the whole device with the liquid crystal display PANEL and the backlight.

However, when the lcd module is used for displaying, the backlight source needs to provide light for a long time, and when the backlight source is used for a long time, a large amount of heat is generated, so that heat is easily accumulated, which affects normal use of other components in the electronic product, and in a serious case, may cause failure of related electronic components.

Therefore, how to promote liquid crystal display module's heat dispersion, and do not influence liquid crystal display module's normal use, be the utility model discloses the technical problem who needs to solve urgently.

SUMMERY OF THE UTILITY MODEL

To above-mentioned prior art's shortcoming or not enough, the to-be-solved technical problem of the utility model is how to provide a liquid crystal display module assembly and terminal, can promote liquid crystal display module assembly's heat dispersion, and does not influence liquid crystal display module assembly's normal use.

In order to solve the technical problem, the utility model provides a liquid crystal display module, include: a liquid crystal panel main body, a backlight source assembly; wherein the backlight assembly includes: a light source body and a light guide plate; the backlight assembly further includes: the sealing element is arranged at the bottom of the light source body and is used for being matched with the liquid crystal panel main body and the light guide plate so as to enclose the light source body in a sealing space;

the sealing element is provided with a heat dissipation hole in a region facing the back of the light source body; and the sealing member is disposed adjacent to the bottom of the light source body.

Further preferably, the method further comprises the following steps: and the dustproof net is used for covering the heat dissipation holes.

Further preferably, the aperture of the mesh of the dust screen is less than or equal to 10 um.

Further preferably, a gap between the sealing member and the bottom of the light source body is 0.1-0.3 mm

Further preferably, the dust screen is arranged in the heat dissipation hole or attached to the bottom of the sealing element; the dust screen includes: the mesh layer is arranged on the mesh layer and is provided with a colloid layer with a hollow area; the hollow-out area is used for covering the heat dissipation holes; the colloidal layer is used to bond the seal.

Further preferably, the seal is a reflective film or a first frame member; when the sealing element is a reflecting film, the liquid crystal display module can also comprise; and the second frame piece is used for matching with the reflecting film to enclose and form the sealed space.

Further preferably, the length of the heat dissipation holes is 0.5-3.2 mm; the width of the heat dissipation holes is larger than or equal to 0.5 mm.

Further preferably, the method further comprises the following steps: a first flexible circuit board electrically connected to the liquid crystal panel main body; wherein the backlight assembly further comprises: the light source bodies and the second flexible circuit boards are electrically connected with the light source bodies and the first flexible circuit boards; wherein the second flexible circuit board includes: the lamp strip part is used for arranging each light source body, and the connecting part is connected with the lamp strip part and is used for connecting the first flexible circuit board; the heat dissipation hole is provided along an axial direction of the lamp band portion.

Further preferably, the light source bodies are arranged equidistantly; the radiating holes are arranged at equal intervals and are arranged in one-to-one correspondence with the light source bodies.

Further preferably, the backlight unit further includes: the liquid crystal panel main body, the shading adhesive tape layer, the first prism sheet layer, the second prism sheet layer, the diffusion film layer and the light guide plate are sequentially arranged from top to bottom; wherein the liquid crystal panel main body includes: the first polarizer layer, the CF layer, the TFT layer and the second polarizer layer are sequentially arranged from top to bottom.

The application also provides a terminal which comprises the liquid crystal display module.

Compared with the prior art, the liquid crystal display module and the terminal can improve the heat dissipation performance of the liquid crystal display module and do not influence the normal use of the liquid crystal display module.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1: the utility model discloses a section structure sketch map of liquid crystal display module in the first embodiment;

FIG. 2: the structure of the sealing member of the liquid crystal display module in the first embodiment of the present invention is schematically illustrated when the sealing member is disposed at the bottom of the backlight assembly;

FIG. 3: the structure diagram of the liquid crystal display module in the first embodiment of the present invention when the dust screen is attached to the sealing member;

FIG. 4: the structure schematic diagram of the dust screen in the first embodiment of the utility model;

FIG. 5: the cross-sectional structure of the plane B-B in FIG. 4 is schematically shown;

FIG. 6: the structure diagram of the second flexible circuit board in the first embodiment of the present invention;

FIG. 7: the partial structure shown in A in FIG. 2 is enlarged;

FIG. 8: the utility model discloses the section structure schematic diagram of liquid crystal display module assembly in the second embodiment.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Example one

As shown in fig. 1 to 7, a first embodiment of the present invention provides a liquid crystal display module, which mainly comprises a liquid crystal panel main body 1, a backlight module, and the like.

The backlight unit mainly includes a light source body 31, a light guide plate 2, and a sealing member 5 disposed at the bottom of the light source body 31. And, the sealing member 5 is adapted to cooperate with the liquid crystal panel main body 1 and the light guide plate 2 to enclose the light source body 31 within the sealing space 9. The sealing member 5 has a heat radiation hole 51 formed in a region facing the back of the light source body 31. The sealing member 5 is disposed adjacent to the bottom of the light source body 31.

The above results show that: through the cooperation of the sealing member 5, the liquid crystal panel body 1 and the light guide plate 2, the light source body 31 capable of emitting light to the liquid crystal panel body 1 is enclosed in the sealing space 9, and therefore the heat dissipation holes 51 are formed in the region of the sealing member 5, which is just opposite to the back of the light source body 31, so that the circulation of gas can be effectively increased, and the heat dissipation performance can be improved. In addition, since the heat dissipation hole 51 is opened in the area of the sealing member 5 facing the back of the light source body 31 and not in the linear irradiation range of light, the light leakage phenomenon is not easy to occur, especially after the liquid crystal display module is installed in the terminal, the sealing member 5 can be shielded by the housing in the terminal to avoid the light leakage phenomenon, so that the normal use of the liquid crystal display module is not affected.

Therefore, the liquid crystal display module and the terminal provided by the embodiment have the advantages that the structure is simple, the heat dissipation performance of the liquid crystal display module can be improved, and meanwhile, the normal use of the liquid crystal display module is not influenced.

Specifically, as shown in fig. 3 and 4, the liquid crystal display module further includes: and a dust screen 8 for covering the heat dissipation holes 51. Through the dustproof net, the liquid crystal display module can be prevented from entering the sealed space 9 by dust such as dust in a production workshop when being manufactured or used, so that the normal use of the liquid crystal display module is prevented from being influenced by the dust entering the sealed space 9.

In general, the aperture of the mesh of the dust screen 8 in the present embodiment is preferably 10um or less. Through the specification parameters, the requirement for improving the heat dissipation performance can be met, and meanwhile, the situation that dust with small particles enters the liquid crystal display module is avoided to the greatest extent.

Further preferably, in order to meet the design and processing requirements in practical applications, the dust screen is disposed in the heat dissipation hole 51 or attached to the bottom of the sealing member 5.

As shown in fig. 4 and 5, the dust screen 8 in the present embodiment may preferably be composed of a mesh layer 81, a colloid layer 83 disposed on the mesh layer 81 and having a hollow area 82. The hollow-out areas 82 are used for covering the corresponding heat dissipation holes 51, and the colloid layer 83 is used for bonding the sealing member 5. Also, the hollow-out areas 82 preferably correspond one-to-one to the number and positions of the heat dissipation holes 51. Realize carrying out radiating when to louvre 51 through the mesh on the mesh layer 81, bond sealing member 5 with the help of colloid layer 83, prevent that dust screen 8 from breaking away from sealing member 5, wherein, colloid layer 83 preferably is double-sided adhesive layer to paste the mode of the colloid layer 83 of seting up fretwork area 82 through the mode of pasting, avoid colloid layer 83 to cover louvre 51 and the defect that can't in time dispel the heat. Obviously, it should be mentioned that the colloid layer 83 in this embodiment may also be disposed on the mesh layer 81 by a coating method, and an uncoated region forms a hollow-out region, so how the colloid layer 83 is disposed on the mesh layer 81 in this embodiment is not specifically defined and described in detail.

It should be noted that the mesh arrangement of the dust screen 8 in this embodiment is simply described as an example.

Further preferably, as shown in fig. 1, the sealing member 5 in this embodiment is a reflective film to form the sealed space 9 in a surrounding manner for the convenience of practical operation. Moreover, when the sealing member 5 is a reflective film, the liquid crystal display module may further include; a second frame member 6 for enclosing a sealed space 9 in cooperation with the reflective film. Obviously, in this embodiment, the sealed space 9 can be realized by directly extending the reflective film instead of the second frame member 6 without the second frame member 6, and will not be specifically limited and explained herein.

In addition, preferably, in order to improve the heat dissipation effect and not affect the structural strength of the sealing member 5, the length of the heat dissipation hole in the embodiment is 0.5-3.2 mm; the width of the heat dissipation hole 51 is 0.5mm or more.

In addition, in order to prevent the light emitted from the light source body 31 from being reflected by the liquid crystal panel body 1 and/or the light guide plate 2 and then emitted from the heat dissipation hole 51 to the maximum, the gap between the sealing member 5 and the bottom of the light source body 31 is 0.1 to 0.3 mm.

Further preferably, as shown in fig. 1 to 7, in order to maximize the heat dissipation performance of the area where the backlight assembly is located, the liquid crystal display module further includes: a first flexible circuit board 71 electrically connected to the liquid crystal panel main body 1 and the backlight unit, and the like. Wherein, backlight unit still includes: a plurality of light source bodies 31, a second flexible circuit board 32 electrically connected with each light source body 31 and the first flexible circuit board 71, wherein the second flexible circuit board 32 includes: a lamp strip portion 321 for disposing each light source body 31, and a connection portion 322 connected to the lamp strip portion 321 and for connecting the first flexible circuit board 71. Preferably, the heat radiation hole 51 is provided along the axial direction of the lamp strip 321.

Further preferably, in order to meet design and assembly requirements in practical application, the light source bodies are arranged at equal intervals.

In order to further improve the heat dissipation effect and increase the gas convection, the heat dissipation holes are preferably arranged at equal intervals and are arranged in one-to-one correspondence with the light source bodies.

In addition, it should be noted that the heat dissipation hole 51 in the present embodiment may also be formed by a plurality of through holes arranged in a rectangular array, which are not labeled in the drawings, so as to replace the heat dissipation hole 51 formed by the above-mentioned single hole, so as to meet different design and processing requirements. Further, it is further preferable that the through holes are arranged in a layout similar to the mesh in the above-described mesh region 81, so that the dust-proof mesh is not necessary and the purpose of dust-proof can be achieved.

Further preferably, as shown in fig. 1, in order to meet design and assembly requirements in practical applications, the backlight unit further includes: a light-shielding adhesive tape layer 15, a first prism sheet layer 16, a second prism sheet layer 17, and a diffusion film layer 18. The liquid crystal panel body 1, the light-shielding adhesive tape layer 15, the first prism sheet layer 16, the second prism sheet layer 17, the diffusion film layer 18 and the light guide plate 2 are sequentially arranged from top to bottom. The liquid crystal panel body 1 may be configured by arranging a first polarizer layer 11, a Color Filter (CF) layer 12, a Thin Film Transistor (TFT) layer 13, a second polarizer layer 14, and the like in this order from top to bottom.

Example two

A first embodiment of the present invention provides a liquid crystal display module, which is substantially the same as the above embodiments, and is different in that, as shown in fig. 8, a sealing member 5 is a first frame member; the first frame body piece enables the liquid crystal display module to be free of a reflecting film, and the radiating effect can be achieved.

In addition, it should be mentioned that the first frame member in this embodiment may also adopt an iron frame in the housing of the existing terminal as the first frame member, so as to meet the assembly requirements of terminals of different types.

In addition, as shown in fig. 8, the light source body 31 and the second flexible circuit board 32 in the backlight assembly in the present embodiment are preferably mounted in a manner opposite to the above-mentioned manner, so that the second flexible circuit board 32 blocks the heat dissipation hole 51, and thus the dust screen 8 is not required.

EXAMPLE III

The present embodiment further provides a terminal, including: the liquid crystal display module in any of the above embodiments.

The above results show that: through the cooperation of the sealing member 5, the liquid crystal panel body 1 and the light guide plate 2, the backlight assembly which can emit light to the liquid crystal panel body 1 is enclosed in the sealing space 9, and therefore the heat dissipation holes 51 are formed in the region of the sealing member 5, which is over against the back of the backlight assembly, so that the circulation of air can be effectively increased, and the heat dissipation performance can be improved. In addition, the heat dissipation hole 51 is disposed in the area of the sealing member 5 facing the back of the backlight module, and is not in the linear irradiation range of light, so that the light leakage phenomenon is not easy to occur, especially after the liquid crystal display module is mounted in the terminal, the sealing member 5 can be shielded by the housing in the terminal, thereby avoiding the light leakage phenomenon, and thus the normal use of the liquid crystal display module is not affected.

Specifically, the terminal in this embodiment may preferably be a mobile phone, a tablet computer, or the like.

The above embodiments are merely provided to illustrate the technical solution of the present invention, but not to limit the present invention, and the present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that various modifications and equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the scope of the claims of the present invention should be covered thereby.

Claims

1. A liquid crystal display module includes: a liquid crystal panel main body (1), a backlight unit; wherein the backlight assembly includes: a light source body (31) and a light guide plate (2); characterized in that, the backlight unit further comprises:

the sealing piece (5) is arranged at the bottom of the light source body (31) and is used for being matched with the liquid crystal panel main body (1) and the light guide plate (2) so as to enclose the light source body (31) in a sealing space (9);

wherein, a heat dissipation hole (51) is arranged in the area of the sealing element (5) facing the back of the light source body (31); and the sealing member (5) is disposed in close proximity to the bottom of the light source body (31).

2. The liquid crystal display module of claim 1, further comprising: a dust screen (8) for covering the heat dissipation hole (51).

3. The liquid crystal display module according to claim 2, wherein the aperture of the mesh of the dust screen (8) is less than or equal to 10 um; the gap between the sealing piece (5) and the bottom of the light source body (31) is 0.1-0.3 mm.

4. The LCD module as claimed in claim 2, wherein the dust screen (8) is disposed in the heat dissipation hole (51) or attached to the bottom of the sealing member (5); the dust screen (8) comprises: the glue layer comprises a mesh layer (81) and a glue layer (83) which is arranged on the mesh layer (81) and provided with a hollow area (82); wherein the hollowed-out area (82) is used for covering the heat dissipation hole (51); the colloid layer (83) is used for bonding the sealing element (5).

5. A liquid crystal display module according to claim 1, characterized in that the seal (5) is a reflective film or a first frame member; when the sealing element is a reflecting film, the liquid crystal display module can also comprise; and a second frame member (6) for cooperating with the reflective film to enclose the sealed space.

6. The liquid crystal display module of claim 1, wherein the length of the heat dissipation holes is 0.5-3.2 mm; the width of the heat dissipation hole (51) is more than or equal to 0.5 mm.

7. The liquid crystal display module according to any one of claims 1 to 6, further comprising: a first flexible circuit board (71) electrically connected to the liquid crystal panel main body (1); wherein the backlight assembly further comprises: a plurality of light source bodies (31), and a second flexible circuit board (32) electrically connected to each light source body (31) and the first flexible circuit board (71); wherein the second flexible circuit board (32) comprises: a lamp strip portion (321) for arranging each light source body (31), and a connecting portion (322) connected with the lamp strip portion (321) and used for connecting the first flexible circuit board (71); the heat radiation hole (51) is provided along the axial direction of the lamp band portion (321).

8. The liquid crystal display module of claim 7, wherein the light sources are disposed equidistantly; the heat dissipation holes are arranged at equal intervals and are arranged in one-to-one correspondence with the light source body; the heat dissipation holes are formed by a plurality of through holes which are arranged in a rectangular array.

9. The liquid crystal display module of claim 8, wherein the backlight assembly further comprises: the liquid crystal display panel comprises a liquid crystal panel main body (1), a shading adhesive tape layer (15), a first prism sheet layer (16), a second prism sheet layer (17), a diffusion film layer (18) and a light guide plate (2), wherein the liquid crystal panel main body, the shading adhesive tape layer (15), the first prism sheet layer, the second prism sheet layer and the diffusion film layer are sequentially arranged from top to bottom; wherein the liquid crystal panel main body (1) comprises: the first polarizer layer (11), the CF layer (12), the TFT layer (13) and the second polarizer layer (14) are sequentially arranged from top to bottom.

10. A terminal, comprising: a liquid crystal display module according to any one of claims 1 to 9.