CN115951516A

CN115951516A - Backlight module and display device

Info

Publication number: CN115951516A
Application number: CN202211570640.7A
Authority: CN
Inventors: 曾赢慧
Original assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; General Interface Solution Ltd
Current assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; General Interface Solution Ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-11

Abstract

The application relates to a backlight module and a display device. Backlight unit includes the optical film piece, glues frame and light-shading spare, and the protruding spacing portion that is equipped with of side of optical film piece, glues the frame and is used for the part to accept the optical film piece, and includes the frame body and protruding limit structure who locates the outside of frame body, is equipped with the spacing groove that is used for acceping spacing portion in the limit structure, and the light-shading spare is equipped with the cavity and the opening that communicates with the cavity, and limit structure is constructed to accept in the cavity through the opening, and with the interior wall connection of light-shading spare. According to the backlight module, the limiting structure is accommodated in the cavity of the light shading part, the light shading of the limiting structure is realized, and the limiting structure penetrates through the opening and is accommodated in the cavity only by abutting the light shading part on the limiting structure with certain pressure during assembly, so that the time and operation for aligning the light shading part and the limiting structure are saved, the light shading part and the limiting structure are easy and convenient to assemble, and the assembly convenience of the backlight module is improved.

Description

Backlight module and display device

Technical Field

The present application relates to the field of display technologies, and in particular, to a backlight module and a display device.

Background

The display device can be used as a display component of electronic equipment, and is widely applied to various electronic products. The display device mainly comprises a backlight module and a display panel, wherein the backlight module comprises an optical diaphragm and a rubber frame, and a limiting structure used for limiting the optical diaphragm is arranged on the rubber frame. In order to avoid light leakage at the position of the limit structure, the display device is provided in the related art, and the light shielding layer is attached to the limit structure of the rubber frame so as to reduce the light leakage at the position of the limit structure.

However, the display device in the related art has a problem that the light shielding layer is not conveniently assembled.

Disclosure of Invention

Therefore, it is necessary to provide a backlight module and a display device with simple assembly aiming at the problem of inconvenient assembly of the light shielding layer and the limiting structure on the plastic frame in the related art.

According to an aspect of the present application, there is provided a backlight module, comprising:

the side edge of the optical diaphragm is convexly provided with a limiting part;

the rubber frame is used for partially accommodating the optical diaphragm and comprises a frame body and a limiting structure convexly arranged on the outer side of the frame body, and a limiting groove used for accommodating the limiting part is formed in the limiting structure; and

the light shading part is provided with a cavity and an opening communicated with the cavity, and the limiting structure is constructed to be capable of being contained in the cavity through the opening and connected with the inner wall of the light shading part.

According to the backlight module, the light shading piece is arranged, so that the limiting structure is accommodated in the cavity of the light shading piece, the light transmission of the limiting structure is shielded by the light shading piece, and the limiting structure is shaded. And because the light shading piece is only required to be abutted against the limiting structure with certain pressure during assembly, the limiting structure can penetrate through the opening and be contained in the cavity through the matching of the opening and the limiting structure, and the assembly is realized. Because the time and the operation of aligning the light shading piece and the limiting structure are saved in the assembling process, the light shading piece and the limiting structure are easy and convenient to assemble, and the assembling convenience of the backlight module is improved.

In one embodiment, the limiting structure is arranged on the frame body in a protruding manner along a first direction;

the shading piece is provided with a first side which is close to the frame body along the first direction;

the opening is including locating the first opening of the first side of light-shading piece, first opening with the cavity intercommunication.

In one embodiment, one end of the limiting structure along the second direction is provided with a first clamping part arranged at an interval with the frame body along the first direction;

the light shielding piece comprises a second clamping part which is positioned in the cavity and positioned at the first opening, and the limiting structure and the light shielding piece are connected with the second clamping part in a clamping mode through the first clamping part;

wherein the first direction and the second direction intersect each other.

In one embodiment, the first direction and the second direction are perpendicular to each other.

In one embodiment, the number of the first clamping parts and the second clamping parts is two, and the first clamping parts and the second clamping parts correspond to each other one by one;

the two first clamping parts are respectively arranged on two opposite sides of the limiting structure along the second direction;

the two second clamping parts are respectively positioned at two opposite sides of the first opening along the second direction.

In one embodiment, the first clamping portion has a first end and a second end opposite to each other along the first direction, and the first end is located between the frame body and the second end along the first direction;

from the first end to the second end, the size of the first clamping part in the second direction is gradually reduced.

In one embodiment, along the second direction, the limiting structure is arranged in the cavity in an interference manner through the first end of the first clamping portion.

In one embodiment, the size of the first opening along the second direction is L, and the sum of the sizes of the limiting structure and the first clamping portion along the second direction is D;

0.1mm≤D-L≤0.2mm。

in one embodiment, the first side of the light shielding member is provided with a first bonding part;

the backlight module further comprises a first bonding layer arranged on the first bonding portion, and the first bonding portion is connected to the outer side of the frame body through the first bonding layer.

In one embodiment, the backlight module further includes a conductive layer disposed outside the frame body, and a first gap is formed between the conductive layer and the limiting structure along the second direction;

along the second direction, the first bonding part protrudes out of the first gap and partially covers the conductive layer;

wherein the first direction and the second direction intersect each other.

In one embodiment, the first adhesive layer extends along the second direction to between the first adhesive portion and the conductive layer.

In one embodiment, the opening further includes a second opening disposed on a bottom side of the light shielding member, and the second opening communicates with the first opening through the cavity;

the bottom of the limiting structure is not protruded from the second opening.

In one embodiment, the bottom side of the light shielding member is provided with a second bonding portion disposed adjacent to the second opening;

the backlight module further comprises a second bonding layer arranged on the second bonding part.

In one embodiment, the light shielding member is black.

According to another aspect of the present application, there is provided a display device including the backlight module according to any one of the above embodiments.

In one embodiment, the limiting structure is arranged on the frame body in a protruding mode along a first direction;

the opening comprises a first opening arranged on the first side of the light shading piece and a second opening arranged on the bottom side of the light shading piece, and the first opening and the second opening are respectively communicated with the cavity; the bottom of the limiting structure is not protruded out of the second opening;

the display device also comprises a cover plate connected to the bottom of the backlight module, and the cover plate protrudes out of one side of the backlight module, which is provided with the shading piece, along the first direction;

the bottom side of the shading piece is provided with a second bonding part; the backlight module further comprises a second bonding layer arranged on the second bonding portion, and the second bonding portion is connected to the cover plate through the second bonding layer.

Drawings

FIG. 1 is a partial schematic view of a rubber frame in the related art;

FIG. 2 is a schematic view illustrating an assembly of a light-shielding layer and a plastic frame in the related art;

FIG. 3 is a schematic diagram of a display device according to the related art;

FIG. 4 is an exploded view of the frame and the optical film in one embodiment of the present application;

FIG. 5 is a schematic view of a portion of a backlight module according to an embodiment of the present application;

FIG. 6 is a partial schematic view of the rubber frame of the embodiment shown in FIG. 5;

fig. 7 is a schematic view illustrating an assembly of a light shielding member and a rubber frame according to an embodiment of the present application;

FIG. 8 is a schematic structural view of the light blocking member in the embodiment shown in FIG. 7;

FIG. 9 is a cross-sectional view of the light shield of the embodiment of FIG. 8;

FIG. 10 is an exploded view of a plastic frame and a light shield according to another embodiment of the present application;

fig. 11 is a schematic structural view of the light shielding member in the embodiment shown in fig. 10.

Notation of elements for simplicity:

100. 1,

backlight module

200, 20, glue frame

300. 21,

frame bodies

400, 22 and limiting structure

500. Display device 600 and light shielding layer

10. Optical diaphragm 11, limiting part

222. First clamping part 2221 and first end

2222. Second end 30, light shield

31. Cavity 32, second clamping part

33. First adhesive part 34, inner wall

35. Opening 351, first opening

352. Second opening 36 and second adhesive part

40. Conductive layer 50, first gap

2. Cover plate x, first direction

y, second direction z, third direction

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only 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 application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

FIG. 1 is a partial schematic view of a rubber frame in the related art; FIG. 2 is a schematic view illustrating an assembly of a light-shielding layer and a plastic frame in the related art; fig. 3 is a schematic structural diagram of a display device in the related art.

As shown in fig. 1, the backlight module 100 in the related art includes an optical film (not shown in the figure) and a rubber frame 200 for partially accommodating the optical film, wherein the rubber frame 200 includes a frame body 300 and a position-limiting structure 400 protruding from the frame body 300, and the position-limiting structure 400 is used for limiting the optical film. Since the light is transmitted to the position of the position-limiting structure 400 and the thickness of the position-limiting structure 400 is thinner, the light leakage at the position of the position-limiting structure 400 is easy. For this reason, as shown in fig. 2 to 3, the display device 500 is provided in the related art, and the light shielding layer 600 is attached to the position limiting structure 400 of the rubber frame 200, so as to reduce light leakage at the position limiting structure 400 in the display device 500.

However, in the display device, in order to reduce light leakage caused by misalignment of the light shielding layer 600, it takes a long time to align the light shielding layer 600 with the position limiting structure 400 when the light shielding layer 600 is attached, and thus the light shielding layer 600 is not easily assembled.

Therefore, it is desirable to provide a backlight module and a display device with simple assembly.

FIG. 4 is an exploded view of a frame and an optical film according to an embodiment of the present disclosure; FIG. 5 is a schematic view of a portion of a backlight module according to an embodiment of the present application; FIG. 6 is a partial schematic view of the rubber frame of the embodiment shown in FIG. 5; fig. 7 is a schematic view illustrating an assembly of a light shielding member and a rubber frame according to an embodiment of the present application; fig. 8 is a schematic structural view of the light shielding member in the embodiment shown in fig. 7.

Referring to fig. 4-5 and fig. 7, a backlight module 1 according to an embodiment of the present disclosure includes an optical film 10, a rubber frame 20, and a light shielding member 30.

The side edge of the optical film 10 is convexly provided with a limiting part 11 (see fig. 4). The rubber frame 20 is used for partially accommodating the optical film 10, and the rubber frame 20 includes a frame body 21 and a limiting structure 22 protruding from the frame body 21, and a limiting groove (not shown) for accommodating the limiting portion 11 is provided in the limiting structure 22. Referring to fig. 7-8, the light shielding member 30 is provided with a cavity 31 and an opening 35 communicating with the cavity 31, and the limiting structure 22 is configured to be accommodated in the cavity 31 through the opening 35 and connected to the inner wall 34 of the light shielding member 30.

In the backlight module 1, the limiting structure 22 is protruded from the outer side of the frame body 21 to limit the limiting portion 11 of the optical film 10 through the limiting groove formed in the limiting structure 22, so that the optical film 10 is fixed relative to the rubber frame 20. Through setting up light-shading piece 30, light-shading piece 30 is equipped with cavity 31 and the opening 35 with the cavity intercommunication to make limit structure 22 can get into cavity 31 through opening 35, and then make light-shading piece 30 cover locate limit structure 22 through limit structure 22 and cavity 31's cooperation, realize locating the sheltering from of light to limit structure 22, avoid limit structure 22 department light leak. Moreover, when the light-shielding member 30 is assembled, the opening 35 of the light-shielding member 30 faces the limiting structure 22, and the light-shielding member 30 moves towards the limiting structure 22, so that the limiting structure 22 can pass through the opening 35 and be accommodated in the cavity 31 through the matching of the opening 35 and the limiting structure 22, the light-shielding of the limiting structure 22 is realized, the operation of aligning the light-shielding member 30 and the limiting structure 22 is simplified, the time of aligning the light-shielding member 30 and the limiting structure 22 is reduced, and a positioning jig is not needed, so that the light-shielding member 30 and the limiting structure 22 are assembled simply and conveniently, and the assembly convenience of the backlight module 1 is improved.

Alternatively, the frame body 21 and the optical film 10 are each configured to be rectangular.

Specifically, at least two opposite side edges of the optical film 10 are convexly provided with the limiting portions 11, the limiting structures 22 are arranged in one-to-one correspondence with the limiting portions 11, and each limiting portion 11 is accommodated in a corresponding limiting groove.

In one embodiment, as shown in fig. 4, two opposite sides of the optical film 10 are respectively protruded with two position-limiting portions 11, so as to improve the position-limiting reliability of the rubber frame 20 on the optical film 10. In other embodiments, the number of the limiting portions 11 may be other arrangements according to the size of the optical film 10, and is not limited herein.

It is understood that the limiting portion 11 is protruded from the side of the optical film 10 so as not to affect the effective area.

In some embodiments, as shown in fig. 4, each position-limiting portion 11 extends lengthwise along the side of the optical film 10 connected thereto, and the lengthwise extending direction of the position-limiting structure 22 is parallel to the lengthwise extending direction of the corresponding position-limiting portion 11. Therefore, the connection reliability of the limiting part 11 and the optical diaphragm 10 and the connection reliability of the limiting part 11 and the limiting structure 22 are improved, the limiting part 11 and the limiting structure 22 are easy to arrange, and interference with other parts is avoided.

In some embodiments, as shown in fig. 5 and 8, the position-limiting structure 22 is disposed on the frame body 21 in a protruding manner along the first direction (i.e., the direction x in fig. 5), the light-shielding member 30 has a first side along the first direction x and close to the frame body 21, the opening 35 includes a first opening 351 disposed on the first side of the light-shielding member 30, and the first opening 351 is communicated with the cavity 31. Thus, the position limiting structure 22 can be accommodated in the cavity 31 through the first opening 351, and the first side of the light shielding member 30 can face the position limiting structure 22 during assembly, and the light shielding member 30 can move towards the position limiting structure 22 along the first direction x, so that the light shielding member 30 is sleeved on the position limiting structure 22.

It should be noted that, in the actual assembly process, the light shielding member 30 can be assembled to the limiting structure 22 manually or by machine. Because the alignment and assembly operations of the light shielding member 30 and the limiting structure 22 are simple, a positioning jig is not required, so that the light shielding member 30 and the limiting structure 22 are easy to assemble, and the cost is low.

In order to firmly connect the light shielding member 30 and the position-limiting structure 22, in some embodiments, as shown in fig. 5-6, one end of the position-limiting structure 22 along the second direction (i.e., the direction y in fig. 5) is provided with a first clamping portion 222 spaced from the frame body 21 along the first direction x. As shown in fig. 8, the light shielding member 30 includes a second clamping portion 32 located in the cavity 31 and located at the first opening 351, and the limiting structure 22 and the light shielding member 30 are clamped and connected with the second clamping portion 32 by means of the first clamping portion 222. Wherein the first direction x and the second direction y intersect each other. So, through set up first joint portion 222 on limit structure 22 to set up second joint portion 32 that light-shielding member 30 includes the opening part that is located cavity 31, make limit structure 22 be connected with light-shielding member 30 joint, thereby improved limit structure 22 and light-shielding member 30's connection reliability, make light-shielding member 30 be difficult for droing from limit structure 22, lead to the light leak. The first clamping portion 222 is spaced from the frame body 21 along the first direction x, so that a space for accommodating the second clamping portion 32 is formed between the first clamping portion 222 and the frame body 21.

In the actual assembling process, the first side of the light shielding member 30 faces the limiting structure 22, and then the light shielding member 30 moves towards the direction close to the limiting structure 22 along the first direction x, and applies a certain pressure to the light shielding member 30, so that the light shielding member 30 is connected with the limiting structure 22 in a clamping manner. During assembly, the light shielding member 30 can be manually pressed, so that the second clamping portion 32 of the light shielding member 30 is clamped between the first clamping portion 222 and the frame body 21, and the light shielding member 30 can be assembled on the limiting structure 22 through a machine. Because the structure of the shading piece 30 is simple, and the alignment and assembly operation of the shading piece 30 and the limiting structure 22 are simple, when the machine is adopted for assembly, a positioning jig for aligning the shading piece 30 and the limiting structure 22 is not required to be additionally arranged, so that the cost is reduced.

It can be understood that the limiting structure 22 and the light shielding member 30 are connected by means of the first clamping portion 222 and the second clamping portion 32 in a clamping manner, that is, along the first direction x, the second clamping portion 32 is located between the frame body 21 and the first clamping portion 222, and the second clamping portion 32 can abut against one side of the first clamping portion 222 close to the frame body 21 along the first direction x, so as to prevent the light shielding member 30 from being separated from the limiting structure 22 along the first direction x and towards one side far away from the frame body 21.

Optionally, as shown in fig. 5, the first direction x and the second direction y are perpendicular to each other, so that the protruding direction of the first engaging portion 222 is perpendicular to the direction of the movement tendency of the light shielding member 30 separating from the limiting structure 22, thereby improving the engaging reliability between the light shielding member 30 and the limiting structure 22, and further preventing the light shielding member 30 from falling off from the limiting structure 22.

Specifically, as shown in fig. 4 to 5, the second direction y is parallel to the plane of the optical film 10, so as to avoid the interference between the limiting portion 11 and the limiting structure 22 and other parts.

Optionally, the dimension of the first engaging portion 222 along the second direction y is X, where X is greater than 0 and less than or equal to 2mm, so as to avoid interference between the first engaging portion 222 and other parts. In other embodiments, the first clamping portion 222 may also have other dimensions according to the use requirement, so as to adapt to the internal space limitation of different products, which is not limited herein.

In some embodiments, as shown in fig. 5 to 6, the first clamping portion 222 has a first end 2221 and a second end 2222 opposite to each other along the first direction x, the first end 2221 is located between the frame body 21 and the second end 2222 along the first direction x, and the size of the first clamping portion 222 in the second direction y gradually decreases from the first end 2221 to the second end 2222. It should be noted that, in the assembly process, the light shielding member 30 is installed in the limiting structure 22 along the first direction x, the second locking portion 32 moves from the second end 2222 of the first locking portion 222 to the first end 2221, after the second locking portion 32 passes through the first end 2221 of the first locking portion 222, the second locking portion 32 is locked between the frame body 21 and the first locking portion 222, and the second locking portion 32 can abut against one side of the first end 2221 of the first locking portion 222 close to the frame body 21 along the first direction x. Therefore, by providing the first ends 2221 to the second ends 2222, the size of the first clamping portions 222 in the second direction y is gradually reduced, so that the light shielding member 30 is easily moved from the second ends 2222 to the first ends 2221 of the first clamping portions 222, thereby improving the ease of assembly of the light shielding member 30.

Specifically, the limiting structure 22 is connected to the inner wall 34 of the cavity 31 along the second direction y through the first end 2221 of the first clamping portion 222, so as to prevent the light shielding member 30 from shaking relative to the limiting structure 22 along the second direction y.

Further, as shown in fig. 5 and 8, along the second direction y, the limiting structure 22 is disposed in the cavity 31 through the interference of the first end 2221 of the first clamping portion 222, so that the limiting structure 22 is firmly connected with the light shielding member 30, and the light shielding member 30 is not easily shaken on the limiting structure 22, thereby further avoiding light leakage at the position of the limiting structure 22. And because limit structure 22 is the noneffective region, limit structure 22 interference is located in cavity 31, can not cause the deformation of effective region.

In some embodiments, as shown in fig. 8, the dimension of the first opening 351 along the second direction y is L, and as shown in fig. 6, the sum of the dimensions of the position-limiting structure 22 and the first clamping portion 222 along the second direction y is D, and D-L is greater than or equal to 0.1mm and less than or equal to 0.2mm. So, avoid along second direction y, the difference undersize of the size sum of limit structure 22 and first joint portion 222 and the size of first opening 351 department, cause light-shielding member 30 to rock on limit structure 22 and lead to the light leak, and avoid along second direction y, the size sum of limit structure 22 and first joint portion 222 and the difference of the size of first opening 351 department are too big, cause limit structure 22 or light-shielding member 30 damage and equipment difficulty.

Fig. 9 is a cross-sectional view of the light shield in the embodiment of fig. 8.

In some embodiments, as shown in fig. 5-6 and 9, the number of the first clamping portions 222 and the second clamping portions 32 is two, and the first clamping portions and the second clamping portions correspond to each other. The two first clamping portions 222 are respectively disposed on two opposite sides of the limiting structure 22 along the second direction y, and the two second clamping portions 32 are respectively disposed on two opposite sides of the first opening 351 along the first direction x. Therefore, the number of clamping joints of the light shielding piece 30 and the limiting structure 22 is increased, and the reliability of connection of the light shielding piece 30 and the limiting structure 22 is further improved.

FIG. 10 is an exploded view of a plastic frame and a light shield according to another embodiment of the present application; fig. 11 is a schematic structural view of the light shielding member in the embodiment shown in fig. 10.

In order to firmly connect the position limiting structure 22 and the light shielding member 30, in other embodiments, as shown in fig. 10 to 11, the first side of the light shielding member 30 is provided with a first bonding portion 33. The backlight module 1 further includes a first adhesive layer (not shown) disposed on the first adhesive portion 33, and the first adhesive portion 33 is connected to the outer side of the frame body 21 (see fig. 5) through the first adhesive layer. In this way, the first adhesive portion 33 and the first adhesive layer are provided to fix the light shielding member 30 with respect to the frame body 21, so as to prevent the light shielding member 30 from falling off from the stopper structure 22. In addition, the light-shielding member 30 is also positioned relative to the frame body 21 by means of the first adhesive portion 33 and the first adhesive layer, thereby preventing light leakage caused by shifting or shaking of the light-shielding member 30.

In other embodiments, as shown in fig. 7-9, one end of the position-limiting structure 22 along the second direction (i.e. the direction y in fig. 5) is provided with a first engaging portion 222 spaced from the frame body 21 along the first direction x. As shown in fig. 8, the light shielding member 30 includes a second clipping portion 32 located in the cavity 31 and located at the first opening 351, and the limiting structure 22 and the light shielding member 30 are clipped and connected with the second clipping portion 32 by means of the first clipping portion 222. The first side of the light blocking member 30 is provided with a first adhesive portion 33. The backlight module 1 further includes a first adhesive layer disposed on the first adhesive portion 33, and the first adhesive portion 33 is connected to the outer side of the frame body 21 (see fig. 5) through the first adhesive layer. Therefore, the light shielding piece 30 is connected with the limiting structure 22 in a clamping mode and is connected with the limiting structure 22 in an adhering mode through the first adhesive layer, the connection reliability of the light shielding piece 30 and the limiting structure 22 is further improved, and the light shielding piece 30 is further prevented from shaking or deviating.

Alternatively, the first adhesive layer may employ a double-sided tape. In the actual use process, one side of the double-sided adhesive tape is adhered to the first adhering part 33, the release film on the other side of the double-sided adhesive tape is removed, and then a certain pressure is applied to the light shielding member 30, so that the light shielding member 30 is connected with the limiting structure 22 in a clamping manner, and the light shielding member 30 is connected with the frame body 21 through the first adhesive layer.

In other embodiments, the first adhesive layer may be made of other kinds of adhesives, and the first adhesive portion 33 may be adhered to the frame body 21 by the first adhesive layer, which is not limited herein.

In some embodiments, as shown in fig. 5 and fig. 7, the backlight module 1 further includes a conductive layer 40 disposed on the outer side of the rubber frame 20, and a first gap 50 is formed between the conductive layer 40 and the position-limiting structure 22 along the second direction y. Along the second direction y, the first bonding portion 33 protrudes out of the first gap 50 and partially covers the conductive layer 40. It should be noted that, since the light is transmitted to the frame body 21 and the thickness of the frame body 21 is thinner, the light leakage is easy to occur at the frame body 21. Therefore, by disposing the first bonding portion 33 to protrude out of the first gap 50 and partially cover the conductive layer 40, the first bonding portion 33 blocks the light leakage of the inner frame body 21 in the first gap 50, thereby further improving the light shielding effect.

Specifically, the conductive layer 40 is a light-shielding conductive layer.

In one embodiment, the conductive layer 40 may be an ITO (Indium Tin Oxides) tape.

Optionally, as shown in fig. 5 and 7, the first bonding portions 33 respectively protrude from two sides of the frame body 21 along a third direction (i.e., a direction z in fig. 5), where the third direction z is perpendicular to the first direction x and the second direction y. Thus, light is prevented from leaking from the gap at the joint between the frame body 21 and the first bonding portion 33.

Specifically, the third direction z is perpendicular to the plane of the optical film 10.

In some embodiments, the first adhesive layer extends along the second direction y to between the first adhesive portion 33 and the conductive layer 40, so that the first adhesive portion 33 is connected to the frame body 21 and the conductive layer 40 through the first adhesive layer, thereby increasing the adhesive area of the first adhesive layer and further improving the connection reliability of the first adhesive portion 33 and the frame body 21.

In other embodiments, as shown in fig. 9-10, the opening 35 further includes a second opening 352 disposed on the bottom side of the shade 30, the second opening 352 is communicated with the first opening 351 via the cavity 31, and the bottom of the limiting structure 22 does not protrude from the second opening 352. Thus, when the light shielding member 30 is assembled, the bottom side of the light shielding member 30 is aligned with the position-limiting structure 22, and the light shielding member 30 moves toward the position-limiting structure 22 in a direction close to the position-limiting structure 22, so that the position-limiting structure 22 is received in the cavity 31 through the second opening 352.

It should be noted that, when the backlight module 1 is applied to a display device, the display device further includes other structures connected to the bottom side of the backlight module 1, such as the cover plate 2 shown in fig. 5. In some embodiments, the bottom side of the light shielding member 30 is connected to the cover plate 2 to prevent light leakage from the bottom of the limiting structure 22.

In order to firmly connect the light shielding member 30 and the position-limiting structure 22, in some embodiments, as shown in fig. 10, the bottom side of the light shielding member 30 is provided with a second bonding portion 36 disposed adjacent to the second opening 352, and the backlight module 1 further includes a second adhesive layer (not shown) disposed on the second bonding portion 36. In this way, the light shielding member 30 can be adhesively connected to other structures in the display device by the second adhesive layer, thereby preventing the light shielding member 30 from falling off the stopper structure 22. For example, the light shielding member 30 may be attached to the cover plate 2 (see fig. 7) of the display device through a second adhesive layer. In the actual assembling process, the backlight module 1 and the cover plate 2 may be assembled first, and then the light shielding member 30 is installed on the position-limiting structure 22 along the third direction, and the bottom side of the light shielding member 30 is bonded to the cover plate 2.

In some embodiments, the light shielding member 30 is black to improve the light shielding effect of the light shielding member 30.

Alternatively, the light shielding member 30 may be made of plastic.

In one embodiment, the light shielding member 30 can be formed by plastic injection molding, so as to reduce the production cost of the light shielding member 30. The light shielding member 30 may be formed by other molding processes without considering the cost of the light shielding member 30, and is not limited herein.

Therefore, the backlight module 1 provided by the application is provided with the light shading piece 30, so that the limiting structure 22 of the rubber frame 20 is shaded, the light shading piece 30 is simple in structure and convenient to assemble, a positioning jig is not required to be adopted, and machine assembly can be adopted. The light shielding member 30 can be positioned relative to the rubber frame 20 and is not easy to fall off or shift. And because the position of the limiting structure 22 is a non-effective area, the application of the light-shielding member 30 provided by the present application is not limited to a lateral direction, a straight direction or other light-emitting modes, and the application range is wide.

According to another aspect of the present application, a display device is provided, which includes the backlight module 1 according to any one of the above embodiments.

In some embodiments, as shown in fig. 9 to 10, the position-limiting structure 22 is protruded from the frame body 21 along the first direction x, the light-shielding member 30 has a first side close to the frame body 21 along the first direction x, the opening 35 includes a first opening 351 disposed on the first side of the light-shielding member 30, and a second opening 352 disposed on a bottom side of the light-shielding member 30, and the first opening 351 and the second opening 352 are respectively communicated with the cavity 31, and a bottom of the position-limiting structure 22 is not protruded from the second opening 352. The display device further comprises a cover plate 2 (see fig. 7) connected to the bottom of the backlight module 1, wherein the cover plate 2 protrudes out of the side of the backlight module 1 provided with the light shielding member 30 along the first direction x. The bottom side of the light shielding member 30 is provided with a second bonding portion 36, the backlight module 1 further includes a second bonding layer disposed on the second bonding portion 36, and the second bonding portion 36 is connected to the cover plate 2 through the second bonding layer. Therefore, the light shielding piece 30 is fixedly connected with the cover plate 2, so that the light shielding piece 30 is fixed relative to the limiting structure 22, and the light leakage caused by the shaking or the deviation of the light shielding piece 30 is prevented.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims

1. A backlight module, comprising:

the side edge of the optical film is convexly provided with a limiting part;

2. The backlight module according to claim 1, wherein the position-limiting structure protrudes from the frame body along a first direction;

3. The backlight module as claimed in claim 2, wherein one end of the position-limiting structure along the second direction is provided with a first engaging portion spaced from the frame body along the first direction;

the light shading piece comprises a second clamping part which is positioned in the cavity and positioned at the first opening, and the limiting structure and the light shading piece are connected with the second clamping part in a clamping mode by means of the first clamping part;

wherein the first direction and the second direction intersect each other.

4. The backlight module according to claim 3, wherein the first direction and the second direction are perpendicular to each other.

5. The backlight module as claimed in claim 3, wherein the number of the first clamping portions and the second clamping portions is two, and the first clamping portions and the second clamping portions are in one-to-one correspondence;

6. The backlight module according to claim 3, wherein the first engaging portion has a first end and a second end opposite to each other along the first direction, and the first end is located between the frame body and the second end along the first direction;

7. The backlight module according to claim 6, wherein along the second direction, the position-limiting structure is disposed in the cavity by interference with the first end of the first engaging portion.

8. The backlight module according to claim 6, wherein the dimension of the first opening along the second direction is L, and the sum of the dimensions of the limiting structure and the first engaging portion along the second direction is D;

0.1mm≤D-L≤0.2mm。

9. the backlight module as claimed in claim 2, wherein the first side of the light shielding member is provided with a first bonding portion;

10. The backlight module according to claim 9, further comprising a conductive layer disposed outside the frame body, wherein a first gap is formed between the conductive layer and the position-limiting structure along the second direction;

along the second direction, the first bonding part protrudes out of the first gap and partially covers the conducting layer;

wherein the first direction and the second direction intersect each other.

11. A backlight module according to claim 10, wherein the first adhesive layer extends along the second direction to between the first adhesive portion and the conductive layer.

12. The backlight module according to claim 2, wherein the opening further comprises a second opening disposed at a bottom side of the light shielding member, the second opening communicating with the first opening through the cavity;

the bottom of the limiting structure is not protruded from the second opening.

13. The backlight module as claimed in claim 12, wherein the bottom side of the light shielding member is provided with a second bonding portion disposed adjacent to the second opening;

14. The backlight module as claimed in claim 1, wherein the light-shielding member is black.

15. A display device comprising the backlight module according to any one of claims 1 to 14.

16. The display device according to claim 15, wherein the position limiting structure is provided to the frame body in a protruding manner along a first direction;