CN117031813A - Backlight module and display device - Google Patents

Abstract

The application discloses a backlight module and a display device, wherein the backlight module comprises: the frame body assembly comprises an outer frame piece and a supporting step piece connected to the inner side edge of the first side edge of the outer frame piece, wherein at least two first limiting blocks are arranged on the supporting step piece at intervals, and the at least two first limiting blocks are spaced from the first side edge of the outer frame piece to form a first clamping part; the backlight source assembly is arranged on the first clamping part. In the mode, the clamping part is formed by the frame body component in the application through the structural style and is used for arranging the backlight source component, so that the backlight source component can be reliably connected with the frame body component even after being heated, the heat dissipation is prevented from being influenced by using the adhesive tape, and the overall thickness of the backlight module is reduced.

Description

Backlight module and display device

Technical Field

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

Background

The LCD (Liquid Crystal Display ) product is an inactive light emitting electronic device, which does not have light emitting characteristics, and therefore, the display performance is obtained by relying on the emission of the light source in the backlight module.

However, the backlight module adopted by the LCD in the market at present is generally realized by bonding the backlight source, that is, the lamp strip, inside the back plate by using an adhesive tape, so that after being heated, the bonding reliability of the backlight source and the lamp strip is poor, and the heat dissipation is also poor.

Disclosure of Invention

The application mainly solves the technical problems of poor bonding reliability and poor heat dissipation of a backlight source in a backlight module in the prior art by providing the backlight module and a display device.

In order to solve the technical problems, the application adopts a technical scheme that: provided is a backlight module, wherein the backlight module comprises: the frame body assembly comprises an outer frame piece and a supporting step piece connected to the inner side edge of the first side edge of the outer frame piece, wherein at least two first limiting blocks are arranged on the supporting step piece at intervals, and the at least two first limiting blocks are spaced from the first side edge of the outer frame piece to form a first clamping part; the backlight source assembly is arranged on the first clamping part.

Wherein, the first side of frame spare is equipped with the louvre.

Wherein, still be equipped with the waterproof film between frame spare's first side and backlight unit.

The height of the first limiting block close to the inner top angle of the outer frame piece is larger than that of the other first limiting blocks.

The backlight module further comprises an optical film, at least two second limiting blocks are further arranged at the second side edge of the supporting step piece, which is close to the outer frame piece, at intervals, and each two adjacent second limiting blocks form a second clamping part; at least two third limiting blocks are further arranged at intervals on the third side edge of the supporting step piece, which is close to the outer frame piece, each two adjacent third limiting blocks form a third clamping part, the first protruding part and the second protruding part are arranged on the opposite two side edges of the optical film in a protruding mode, corresponding to the second clamping parts and the third clamping parts, respectively, the first protruding part is clamped on the second clamping parts, and the second protruding part is clamped on the third clamping parts; the second side edge of the outer frame member is parallel to the third side edge of the outer frame member and is perpendicular to the first side edge of the outer frame member.

The backlight module further comprises a back plate, the back plate comprises a main body part and a step part connected to each outer side edge of the main body part, first buckling pieces are arranged on the step part, second buckling pieces are arranged on the outer side edges of the outer frame piece corresponding to each first buckling piece, and the first buckling pieces are buckled with the second buckling pieces to connect the back plate and the outer frame piece.

The first clamping piece comprises a first connecting portion and a first clamping portion, one end of the first connecting portion is connected to the step portion, the other end of the first connecting portion is connected to one end of the first clamping portion, and the other end of the first clamping portion extends obliquely towards the direction close to the step portion.

The outer side edge of the outer frame piece is provided with a concave part corresponding to each first clamping piece, the second clamping piece comprises a second connecting portion and a second clamping portion, one end of the second connecting portion is connected to the inner side wall of the outer frame piece corresponding to the concave part, the other end of the second connecting portion is connected to one end of the second clamping portion, and the other end of the second clamping portion extends obliquely towards the direction close to the inner side edge of the outer frame piece.

Wherein, a first included angle between one side edge of the first connecting part connected with the step part and the outer side edge of the step part is 30-45 degrees; the second included angle between the second clamping part and the outer side edge of the outer frame piece is 5-10 degrees larger than the first included angle.

In order to solve the technical problems, the application adopts another technical scheme that: the display device comprises a display screen body and a backlight module which are connected; wherein the backlight module is any one of the above backlight modules.

The beneficial effects of the application are as follows: compared with the prior art, the backlight module is characterized in that the support step piece of the frame body component is provided with at least two first limiting blocks at intervals, the at least two first limiting blocks are spaced from the first side edge of the outer frame piece to form the first clamping part, and the backlight component is specifically clamped in the first clamping part to be connected with the frame body component, so that the backlight component can be reliably connected with the frame body component even after being heated, heat dissipation is prevented from being influenced by using an adhesive tape, and the overall thickness of the backlight module is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is an exploded view of an embodiment of a backlight module according to the present application;

FIG. 2 is a schematic diagram of a detailed structure of the area A of the backlight module in FIG. 1;

FIG. 3 is a schematic diagram showing a detailed structure of an embodiment of a backlight assembly in the backlight module of FIG. 1;

FIG. 4 is a detailed schematic view of the backlight module B in FIG. 1;

FIG. 5 is a detailed schematic view of a portion of the backlight module C in FIG. 1;

FIG. 6 is a detailed schematic view of the backlight module D in FIG. 1;

FIG. 7 is a detailed schematic view of the backlight module E in FIG. 1;

FIG. 8 is a detailed partially assembled view of the backlight module of FIG. 1;

fig. 9 is a schematic structural diagram of an embodiment of a display device according to the present application.

Wherein, 1/62, the back light module; 10. a frame assembly; 20. a backlight assembly; 11. an outer frame member; 111. a heat radiation hole; 112. a second clamping piece; 1121. a second connecting portion; 1122. a second clamping part; 12. supporting the step member; 121. a first limiting block; 122. a second limiting block; 30. an optical film; 31. a first boss; 32. a second protruding portion; 40. a back plate; 41. a main body portion; 42. a step portion; 421. a first clamping piece; 4211. a first connection portion; 4212. a first clamping part; 60. a display device; 61. and a display screen body.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.

The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

The present application will be described in detail with reference to the drawings and embodiments.

Referring to fig. 1-3, fig. 1 is an exploded view of an embodiment of a backlight module according to the present application, fig. 2 is a detailed structural schematic diagram of a region a of the backlight module in fig. 1, and fig. 3 is a detailed structural schematic diagram of an example of a backlight assembly in the backlight module in fig. 1. In this embodiment, the backlight module 1 includes: a frame assembly 10 and a backlight assembly 20.

The backlight module 1 is specifically used for connecting with a display module in a display device to provide sufficient brightness and uniformly distributed light sources for the display module, so that the display module can normally display images, and the reliability of the backlight module 1 directly influences the quality of the display device.

Specifically, the frame assembly 10 further includes an outer frame member 11 and a supporting step member 12, and the supporting step member 12 is specifically connected to an inner edge of the first side of the outer frame member 11.

At least two first limiting blocks 121 are further disposed on the supporting step member 12 at intervals, and the at least two first limiting blocks 121 are correspondingly spaced from the first side edge of the outer frame member 11 to form a first clamping portion.

The backlight assembly 20 is specifically disposed at a first clamping portion (not shown) formed by the first limiting block 121 on the supporting step member 12 and the outer frame member 11, so as to connect the backlight assembly 20 and the frame member 10.

It should be noted that, the backlight assembly 20 is specifically understood as a light strip provided with LEDs for generating a light source, so that the corresponding display device obtains display performance.

According to the scheme, the backlight source assembly 20 is clamped at the first clamping part to be connected with the frame body assembly 10, so that the backlight source assembly 20 can be reliably connected with the frame body assembly 10 even after being heated, the back plate 40 is prevented from being adopted to provide strength support for the backlight source assembly 20, the flatness of the back plate 40 is guaranteed, good optical parameters of the backlight module 1 are further guaranteed, and the structure of the back plate 40 is simplified; and simultaneously, the influence of heat dissipation caused by using the adhesive tape is avoided, and the overall thickness of the backlight module 1 is reduced.

In an embodiment, the first side of the outer frame member 11 in the frame assembly 10 is provided with a heat dissipation hole 111, so that the backlight assembly 20 dissipates heat through the heat dissipation hole 111, and the overall weight of the outer frame member 11 is effectively reduced.

Alternatively, the number of the heat dissipation holes 111 may be at least two, such as 6, 10 or 100, and any reasonable number, and the at least two heat dissipation holes 111 are disposed at a middle position of the first side edge of the outer frame member 11 in the frame assembly 10 at intervals, which is not limited in the present application.

Alternatively, the at least two heat dissipation holes 111 may be specifically arranged in a row-column matrix, or may be arranged at intervals in a random manner, which is not limited in the present application.

Further, in an embodiment, when the backlight module 1 has a waterproof requirement, that is, the heat dissipation hole 111 provided on the outer frame member 11 needs to be waterproof, a waterproof film is further specifically disposed between the first side edge of the outer frame member 11 and the backlight assembly 20, so that the waterproof film is used to prevent moisture from flowing into the backlight module 1 from the heat dissipation hole 111 to contact the backlight assembly 20, thereby affecting the performance thereof.

Optionally, the waterproof film may be any reasonable film layer with waterproof function, such as dupont paper or waterproof oilpaper, which is not limited in the present application.

In an embodiment, among the at least two first limiting blocks 121 disposed on the supporting step member 12 at intervals, in the direction of vertically supporting the step member 12, the height of the first limiting block 121 near the inner top corner of the outer frame member 11 is greater than the height of the other first limiting blocks 121, that is, the height of the first limiting block 121 corresponding to the non-light-emitting position of the edge of the backlight assembly 20 is greater than the height of the other first limiting blocks 121 located at the middle position, so that the backlight assembly 20 can be well limited, and meanwhile, the normal light-emitting requirement of the backlight assembly 20 can be effectively prevented from being influenced by the first limiting block 121 located at the middle position, and a more stable attaching and fixing effect can be provided, so that reliable connection between the backlight assembly 20 and the frame assembly 10 can be realized.

Optionally, the distance between the light emitting chip on the backlight assembly 20 and the supporting step member 12 is greater than the height of the first limiting block 121 located at the middle position, so as to avoid the first limiting block 121 from damaging the light emitting chip and affecting the normal light emission.

With continued reference to fig. 4 and fig. 5, fig. 4 is a detailed partial structure of the area B of the backlight module in fig. 1, and fig. 5 is a detailed partial structure of the area C of the backlight module in fig. 1.

In an embodiment, the backlight module 1 specifically further includes an optical film 30, and at least two second limiting blocks 122 are specifically disposed at a position of the supporting step member 12 of the frame assembly 10 near the second side edge of the outer frame member 11 at intervals, and each two adjacent second limiting blocks 122 are correspondingly formed into a second clamping portion (not shown).

And at least two third limiting blocks (not shown) are further disposed at intervals on the third side edge of the supporting step member 12 in the frame assembly 10, which is close to the outer frame member 11, and each two adjacent third limiting blocks form a third clamping portion (not shown).

Further, the opposite sides of the optical film 30 are respectively protruded with a first protrusion 31 and a second protrusion (not shown) corresponding to the second clamping portion and the third clamping portion, and the first protrusion 31 is specifically clamped in the second clamping portion, and the second protrusion is clamped in the third clamping portion, so as to connect the optical film 30 with the frame assembly 10.

The second side of the outer frame 11 is parallel to the third side thereof, and perpendicular to the first side of the outer frame 11.

In another embodiment, at least two fourth limiting blocks (not shown) are further disposed at intervals on the fourth side edge of the supporting step member 12 near the outer frame member 11 in the frame member 10, and each two adjacent fourth limiting blocks form a fourth clamping portion (not shown); a third protruding portion (not shown) is specifically protruding from the fourth limiting block corresponding to the optical film 30, and the third protruding portion is clamped in the fourth clamping portion, so as to more stably connect the optical film 30 with the frame assembly 10; the fourth side of the outer frame 11 is parallel to the first side thereof, and perpendicular to the second side and the third side of the outer frame 11.

Optionally, the second limiting block 122, the third limiting block and the fourth limiting block are specifically spaced from or connected to the second side, the third side and the fourth side of the outer frame member 11, which is not limited in the present application.

With continued reference to fig. 6-8, fig. 6 is a detailed partial structure diagram of the area D of the backlight module in fig. 1, fig. 7 is a detailed partial structure diagram of the area E of the backlight module in fig. 1, and fig. 8 is a detailed partial assembly diagram of the backlight module in fig. 1.

In an embodiment, the backlight module 1 specifically further includes a back plate 40, the back plate 40 further includes a main body portion 41 and a step portion 42 connected to each outer edge of the main body portion 41, and a first fastening member 421 is further disposed on the step portion 42, and a second fastening member 112 is further disposed on an outer side of the outer frame member 11 corresponding to the first fastening member 421, and the first fastening member 421 can be fastened with the second fastening member 112 correspondingly to connect the back plate 40 to the outer frame member 11.

Alternatively, the number of the first fastening members 421 may be at least two, such as 2, 4 or 6, and any reasonable number, and the at least two first fastening members 421 are disposed on the step portion 42 at intervals, which is not limited in the present application.

Further, the first fastening member 421 specifically further includes a first connecting portion 4211 and a first fastening portion 4212, wherein one end of the first connecting portion 4211 is correspondingly connected to the step portion 42, and the other end of the first connecting portion 4211 is connected to one end of the first fastening portion 4212.

One end of the first locking portion 4212 is connected to the other end of the first connecting portion 4211, and the other end of the first locking portion 4212 extends obliquely in a direction approaching the step portion 42, so as to form a fastening structure, so as to be fastened with the second fastening member 112.

It can be understood that the second fastening member 112 specifically engages with the first fastening portion 4212 from the side of the first fastening portion 4212 facing the main body portion 41. The backlight assembly 20 is specifically disposed between the second fastening member 112 and the main body 41, and abuts against the step portion 42.

It should be noted that the back plate 40 can be directly used as a housing of the whole machine, and the assembly of the housing is not required in the downstream whole machine factory, so that the cost can be saved.

Optionally, an included angle between a side of the first clamping portion 4212 facing away from the step portion 42 and the step portion 42 is specifically a set acute angle, that is, a side of the first clamping portion 4212 facing away from the step portion 42 is specifically an inclined plane, so as to facilitate the first clamping member 421 and the second clamping member 112 formed by the first clamping portion 4212.

Further, the outer side of the outer frame 11 is further provided with a recess (not shown) corresponding to each first fastening member 421, and the second fastening member 112 further includes a second connecting portion 1121 and a second fastening portion 1122, wherein one end of the second connecting portion 1121 is connected to the inner side wall of the outer frame 11 corresponding to the recess, and the other end of the second connecting portion 1121 is connected to one end of the second fastening portion 1122.

The other end of the second engaging portion 1122 extends obliquely in a direction approaching the inner side of the outer frame member 11, so as to be engaged with the first engaging member 421.

Optionally, the first included angle n between a side edge of the first connecting portion 4211 connected with the step portion 42 and an outer edge of the step portion 42 is 30-45 degrees, so as to be capable of being buckled with the second buckling member 112 in a rotating manner, so as to ensure the reliability of connection between the two, simplify the assembly between the back plate 40 and the outer frame member 11, and facilitate the subsequent reworking of the backlight module 1.

Optionally, the second angle n between the second engaging portion 1122 and the outer side edge of the outer frame member 11 is 5-10 degrees larger than the first angle n, so as to facilitate the first engaging member 421 to be rotationally engaged into the second engaging member 112.

Optionally, the material of the back plate 40 may be any reasonable material that is easy to achieve flatness, such as glass or plastic, so as to greatly improve the warp yield and the thinness of the product, which is not limited in the present application.

Alternatively, the height of the main body 41 is smaller than the distance between the light emitting chip (not shown) and the step 42 on the backlight assembly 20, so as to avoid the main body 41 from damaging the light emitting chip and affecting the normal light emission.

Optionally, the first stopper 121 may specifically further perform a stopping function on the optical film 30, so that when the optical film 30 expands due to heat, the first stopper 121 can be contacted first, so as to avoid the optical film 30 from damaging the light emitting chip on the backlight assembly 20.

It can be understood that the backlight module 1 specifically uses the frame assembly 10 as a reference, and other components in the backlight module 1 are installed to make the back plate 40 from light glass or plastic, so that the use of galvanized steel plates for manufacturing is avoided, the planarization of the back plate 40 can be effectively ensured, and good optical parameters of the backlight module 1 can be ensured.

It should be noted that, the assembling sequence of the backlight module 1 specifically includes: the backlight assembly 20, the optical film 30 and the back plate 40 are sequentially mounted on the frame assembly 10, so that the back plate 40 is not required to provide strength support for other components, and the back plate 40 can be ensured to be flattened, so that the backlight module 1 can realize good optical parameters.

The application also provides a display module, refer to fig. 9, fig. 9 is a schematic structural diagram of an embodiment of the display device of the application. The display device 60 specifically includes a display screen body 61 and a backlight module 62 connected to each other.

The backlight module 62 in this embodiment is the backlight module 1 in any of the above embodiments, and is specifically referred to fig. 1-8 and related text descriptions, and will not be repeated here.

Compared with the prior art, the backlight module is characterized in that the support step piece of the frame body component is provided with at least two first limiting blocks at intervals, the at least two first limiting blocks are spaced from the first side edge of the outer frame piece to form the first clamping part, and the backlight component is specifically clamped in the first clamping part to be connected with the frame body component, so that the backlight component can be reliably connected with the frame body component even after being heated, heat dissipation is prevented from being influenced by using an adhesive tape, and the overall thickness of the backlight module is reduced.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims (10)

1. The utility model provides a backlight unit which characterized in that, backlight unit includes:

the frame body assembly comprises an outer frame piece and a supporting step piece connected to the inner side edge of the first side edge of the outer frame piece, wherein at least two first limiting blocks are arranged on the supporting step piece at intervals, and the at least two first limiting blocks are spaced from the first side edge of the outer frame piece to form a first clamping part;

and the backlight source component is arranged on the first clamping part.

2. A backlight module according to claim 1, wherein,

the first side of the outer frame piece is provided with a heat dissipation hole.

3. A backlight module according to claim 2, wherein,

a waterproof film is arranged between the first side edge of the outer frame piece and the backlight source component.

4. A backlight module according to claim 1, wherein,

the height of the first limiting block close to the inner top angle of the outer frame piece is larger than the heights of other first limiting blocks.

5. A backlight module according to claim 1, wherein,

the backlight module further comprises an optical film, at least two second limiting blocks are further arranged at the position, close to the second side edge of the outer frame, of the supporting step piece at intervals, and each two adjacent second limiting blocks form a second clamping part;

at least two third limiting blocks are further arranged at intervals on the third side edge, close to the outer frame, of the supporting step piece, each two adjacent third limiting blocks form a third clamping part, a first protruding part and a second protruding part are arranged on two opposite side edges of the optical film in a protruding mode, corresponding to the second clamping parts and the third clamping parts, of the optical film, the first protruding part is clamped on the second clamping parts, and the second protruding part is clamped on the third clamping parts;

the second side edge of the outer frame member is parallel to the third side edge of the outer frame member and is perpendicular to the first side edge of the outer frame member.

6. A backlight module according to claim 1, wherein,

the backlight module further comprises a back plate, the back plate comprises a main body part and a step part connected to the outer side edge of the main body part, first buckling pieces are arranged on the step part, a second buckling piece is arranged on the outer side edge of the outer frame piece corresponding to each first buckling piece, and the first buckling pieces are buckled with the second buckling pieces to connect the back plate with the outer frame piece.

7. A backlight module according to claim 6, wherein,

the first buckle piece comprises a first connecting portion and a first clamping portion, one end of the first connecting portion is connected to the step portion, the other end of the first connecting portion is connected with one end of the first clamping portion, and the other end of the first clamping portion obliquely extends towards the direction close to the step portion.

8. A backlight module according to claim 7, wherein,

the outer side of the outer frame piece corresponds each first buckle piece and is provided with a concave part, the second buckle piece comprises a second connecting part and a second clamping part, one end of the second connecting part is connected with the inner side wall of the outer frame piece corresponding to the concave part, the other end of the second connecting part is connected with one end of the second clamping part, and the other end of the second clamping part obliquely extends towards the direction close to the inner side of the outer frame piece.

9. The backlight module according to claim 8, wherein,

a first included angle between one side edge of the first connecting part connected with the step part and the outer side edge of the step part is 30-45 degrees;

the second included angle between the second clamping part and the outer side edge of the outer frame piece is 5-10 degrees larger than the first included angle.

10. The display device is characterized by comprising a display screen body and a backlight module which are connected;

wherein the backlight module is a backlight module according to any one of claims 1-9.