CN117031813A - Backlight module and display device - Google Patents

Abstract

The present application discloses a backlight module and a display device, wherein the backlight module includes: a frame assembly, including an outer frame member and a support step member connected to an inner edge of the first side of the outer frame member. At least two first limiting blocks are spaced on the support step member, and the at least two first limiting blocks are spaced apart from the first side of the outer frame member to form a first locking portion; the backlight assembly is provided In the first card setting part. In the above manner, the frame assembly in this application forms a locking portion through a structural pattern for setting the backlight assembly, thereby effectively ensuring that the backlight assembly can still be reliably connected to the frame assembly even after being heated, and It also avoids the use of tape that affects heat dissipation and reduces the overall thickness of the backlight module.

Description

Backlight modules and display devices

Technical field

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

Background technique

The LCD (Liquid Crystal Display) product is a non-active light-emitting electronic device and does not have luminous properties itself. Therefore, it relies on the emission of light sources in the backlight module to obtain display performance.

However, the backlight modules currently used in LCDs on the market generally use adhesive tape to bond the backlight source, that is, the light strip, inside the backplane. As a result, after being heated, the reliability of the bonding between the two is poor and the heat dissipation is poor. Sex is also poor.

Contents of the invention

The main technical problem solved by this application is to provide a backlight module and a display device to solve the problems in the prior art that the backlight source in the backlight module has poor bonding reliability and poor heat dissipation.

In order to solve the above technical problems, one technical solution adopted by this application is to provide a backlight module, wherein the backlight module includes: a frame assembly, including an outer frame member and a first side connected to the outer frame member. The support step member at the inner edge is provided with at least two first limiting blocks at intervals on the support step member, and the at least two first limiting blocks are spaced apart from the first side of the outer frame member to form a first The locking part; the backlight component is arranged on the first locking part.

Wherein, the first side of the outer frame member is provided with a heat dissipation hole.

Wherein, a waterproof film is also provided between the first side of the outer frame member and the backlight assembly.

Wherein, the height of the first limiting block close to the inner vertex corner of the outer frame member is greater than the height of the other first limiting blocks.

Wherein, the backlight module further includes an optical film, and at least two second limiting blocks are spaced on the second side of the supporting step member close to the outer frame member, and each two adjacent second limiting blocks form a second limiting block. The locking part; at least two third limiting blocks are spaced apart at the third side of the support step member close to the outer frame member, and every two adjacent third limiting blocks form a third locking part, and the optical film A first protruding portion and a second protruding portion protrude from the opposite sides corresponding to the second engaging portion and the third engaging portion respectively. The first protruding portion is engaged with the second engaging portion, and the second protruding portion is engaged with the second engaging portion. The protruding portion is engaged with the third engaging portion; wherein, the second side of the outer frame member is parallel to its third side and perpendicular to the first side of the outer frame member.

Wherein, the backlight module also includes a backplate, which includes a main body and a step portion connected to each outer edge of the main body. A first buckle is provided on the step portion, and the outer edge of the outer frame corresponds to each The first buckle is provided with a second buckle, and the first buckle and the second buckle are engaged to connect the back panel and the outer frame.

Wherein, the first buckle component includes a first connecting part and a first snapping part, one end of the first connecting part is connected to the step part, the other end of the first connecting part is connected to one end of the first snapping part, and the first snapping part The other end of the portion extends obliquely toward the step portion.

Wherein, the outer edge of the outer frame is provided with a recess corresponding to each first buckle, the second buckle includes a second connecting part and a second snapping part, and one end of the second connecting part is connected to the outer frame. Corresponding to the inner wall of the recessed part, the other end of the second connecting part is connected to one end of the second clamping part, and the other end of the second clamping part extends obliquely in a direction close to the inner side of the outer frame member.

Wherein, the first included angle between the side edge connecting the first connecting part and the step part and the outer edge of the step part is 30-45 degrees; the third angle between the second clamping part and the outer edge of the outer frame member The second included angle is 5-10 degrees larger than the first included angle.

In order to solve the above technical problems, another technical solution adopted by this application is to provide a display device, wherein the display device includes a connected display screen body and a backlight module; wherein the backlight module is any one of the above Backlight module.

The beneficial effects of this application are: different from the situation in the prior art, the support step of the frame assembly in the backlight module provided by this application is provided with at least two first limiting blocks at intervals, and at least two first limiting blocks are provided at intervals. The limiting block is spaced apart from the first side of the outer frame member to form a first locking portion, and the backlight component is specifically locked in the first locking portion to achieve connection with the frame component, thereby effectively ensuring This ensures that the backlight component can still be reliably connected to the frame component even after being heated, and at the same time avoids the use of tape that affects heat dissipation, and reduces the overall thickness of the backlight module.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts. in:

Figure 1 is an exploded view of an embodiment of the backlight module of the present application;

Figure 2 is a detailed structural diagram of area A of the backlight module in Figure 1;

Figure 3 is a detailed structural diagram of an embodiment of the backlight source assembly in the backlight module in Figure 1;

Figure 4 is a detailed partial structural diagram of area B of the backlight module in Figure 1;

Figure 5 is a detailed partial structural diagram of area C of the backlight module in Figure 1;

Figure 6 is a detailed partial structural diagram of area D of the backlight module in Figure 1;

Figure 7 is a detailed partial structural diagram of area E of the backlight module in Figure 1;

Figure 8 is a detailed partial assembly diagram of the backlight module in Figure 1;

FIG. 9 is a schematic structural diagram of an embodiment of the display device of the present application.

Among them, 1/62, backlight module; 10, frame component; 20, backlight component; 11, outer frame; 111, heat dissipation hole; 112, second buckle; 1121, second connection part; 1122, Second clamping part; 12. Supporting step piece; 121. First limiting block; 122. Second limiting block; 30. Optical film; 31. First protruding part; 32. Second protruding part; 40 , back plate; 41. main body part; 42. step part; 421. first buckle part; 4211. first connection part; 4212. first buckle part; 60. display device; 61. display body.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms “first”, “second” and “third” in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include at least one of these features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship between the components in a specific posture (as shown in the drawings) , sports conditions, etc., if the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

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 present application. The appearances of this phrase 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 understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

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

Please refer to Figures 1 to 3. Figure 1 is an exploded view of an embodiment of the backlight module of the present application. Figure 2 is a detailed structural schematic diagram of area A of the backlight module in Figure 1. Figure 3 is a diagram of the backlight module in Figure 1. Detailed structural diagram of an embodiment of the backlight assembly in the group. In this embodiment, the backlight module 1 includes: a frame component 10 and a backlight source component 20 .

Among them, the backlight module 1 is specifically used to connect a display module in a display device to provide sufficient brightness and a uniformly distributed light source for the display module, so that the display module can display images normally, and the backlight module 1 The reliability will directly affect the quality of the display device.

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

At least two first limiting blocks 121 are spaced on the support step member 12 , and the at least two first limiting blocks 121 are correspondingly spaced from the first side of the outer frame member 11 to form a first Card setting department.

The backlight assembly 20 is specifically disposed on a first locking portion (not shown) formed correspondingly by the first limiting block 121 on the support step member 12 and the outer frame member 11, so as to connect the backlight assembly 20 with the outer frame member 11. The frame assembly 10 realizes the connection.

It is worth noting that the backlight assembly 20 can be specifically understood as a light strip provided with LEDs for generating light sources so that the corresponding display device can obtain display performance.

In the above solution, the backlight assembly 20 is clamped in the first clamping portion to achieve connection with the frame assembly 10 , thereby effectively ensuring that the backlight assembly 20 can still reliably communicate with the frame assembly 10 even after being heated. connection, and avoids using the backplane 40 to provide strong support for the backlight assembly 20, thereby ensuring the flatness of the backplane 40, thereby ensuring the realization of good optical parameters of the backlight module 1, and simplifying the structure of the backplane 40; At the same time, the use of tape is avoided, which affects heat dissipation, and the overall thickness of the backlight module 1 is reduced.

In one embodiment, the first side of the outer frame member 11 in the frame assembly 10 is provided with a heat dissipation hole 111 to facilitate the backlight assembly 20 to dissipate heat through the heat dissipation hole 111, and at the same time, the outer frame member is effectively reduced. Overall weight of 11.

Optionally, the number of the heat dissipation holes 111 can be at least two, such as 6, 10, or 100, and any reasonable number, and the at least two heat dissipation holes 111 are spaced apart from each other on the outside of the frame assembly 10 . The middle position of the first side of the frame 11 is not limited in this application.

Optionally, the at least two heat dissipation holes 111 may be arranged in a matrix of rows and columns, or may be arranged at intervals from each other in a random manner, which is not limited in this application.

Furthermore, in one embodiment, when the backlight module 1 needs to be waterproof, that is, when the heat dissipation holes 111 provided on the outer frame member 11 need to be waterproofed, the first side of the outer frame member 11 is connected to the backlight assembly. A waterproof film is specifically provided between 20 to prevent moisture from flowing into the backlight module 1 from the heat dissipation holes 111 and contacting the backlight assembly 20 and affecting its performance.

Optionally, the waterproof membrane can be any reasonable membrane layer with waterproof function, such as DuPont paper or waterproof oil paper, which is not limited in this application.

In one embodiment, among the at least two first limiting blocks 121 spaced apart on the supporting step member 12 , and in the direction perpendicular to the supporting step member 12 , the first limiting blocks 121 are located close to the inner vertex corner of the outer frame member 11 . The height of the position block 121 is greater than the height of the other first limit blocks 121 , that is, the height of the first limit block 121 corresponding to the non-luminous position at the edge of the backlight assembly 20 is greater than the height of the other first limit blocks 121 located in the middle position. height, so as to achieve a better limiting effect on the backlight assembly 20, and at the same time, it can also effectively avoid the first limiting block 121 located in the middle position from affecting the normal lighting needs of the backlight assembly 20, and can provide a more stable The fitting and fixing effect is used to achieve a reliable connection between the backlight component 20 and the frame component 10 .

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 in the middle position to prevent the first limiting block 121 from damaging the light-emitting chip and affecting the light-emitting chip. Normal light output.

Please continue to refer to FIGS. 4 and 5 in conjunction. FIG. 4 is a detailed partial structural diagram of area B of the backlight module in FIG. 1 , and FIG. 5 is a detailed partial structural diagram of area C of the backlight module in FIG. 1 .

In one embodiment, the backlight module 1 further includes an optical film 30 , and at least two second sides of the support step 12 in the frame assembly 10 close to the outer frame 11 are spaced apart. There are two limiting blocks 122 , and every two adjacent second limiting blocks 122 are correspondingly formed as second locking parts (not marked in the figure).

In addition, at least two third limiting blocks (not shown in the figure) are spaced apart at the third side of the support step member 12 in the frame assembly 10 close to the outer frame member 11, and each two adjacent ones thereof The third limiting block forms a third locking portion (not shown in the figure).

Further, a first protruding portion 31 and a second protruding portion (not shown in the figure) are protrudingly provided on opposite sides of the optical film 30 respectively corresponding to the second locking portion and the third locking portion. The first protruding part 31 is specifically engaged with the second engaging part, and the second protruding part is engaged with the third engaging part 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 and perpendicular to the first side of the outer frame 11 .

In another embodiment, at least two fourth limiting blocks (not shown) are spaced at the fourth side of the support step member 12 in the frame assembly 10 close to the outer frame member 11, and where Every two adjacent fourth limiting blocks form a fourth locking portion (not shown in the figure); and the optical film 30 is specifically provided with a third protruding portion corresponding to the fourth limiting block (Fig. (not shown), the third protruding portion is locked in the fourth locking portion to more stably connect the optical film 30 to the frame assembly 10; wherein, the fourth side of the outer frame member 11 is specifically The first side is parallel and perpendicular to the second side and the third side of the outer frame member 11 .

Optionally, the second limiting block 122 , the third limiting block and the fourth limiting block are respectively spaced apart from or spaced apart from the second side, the third side and the fourth side of the outer frame 11 . connection, this application does not limit this.

Please continue to refer to Figures 6 to 8 in conjunction. Figure 6 is a detailed partial structural diagram of the D area of the backlight module in Figure 1. Figure 7 is a detailed partial structural diagram of the E area of the backlight module in Figure 1. Figure 8 This is a detailed partial assembly diagram of the backlight module in Figure 1.

In one embodiment, the backlight module 1 further includes a back plate 40 . The back plate 40 further includes a main body 41 and a step 42 connected to each outer edge of the main part 41 , and further on the step 42 . A first buckle 421 is provided, and a second buckle 112 is provided on the outer edge of the outer frame 11 corresponding to the first buckle 421. The first buckle 421 can correspond to the second buckle. The fasteners 112 are engaged to connect the back panel 40 to the outer frame member 11 .

Optionally, the number of the first buckling parts 421 can be at least two, such as 2, 4 or 6, and any reasonable number, and the at least two first buckling parts 421 are arranged spaced apart from each other. On the step portion 42, this application does not limit this.

Furthermore, the first buckle 421 further includes a first connection part 4211 and a first buckle part 4212, and one end of the first connection part 4211 is correspondingly connected to the step part 42, and the first connection part 4211 The other end is connected to one end of the first clamping part 4212.

One end of the first clamping portion 4212 is connected to the other end of the first connecting portion 4211, and the other end of the first clamping portion 4212 extends obliquely toward the step portion 42 to form a snapping structure. It is convenient to engage with the second buckle 112 .

It can be understood that the second buckle 112 is specifically engaged with the first buckle 4212 from the side facing the main body 41 from the first buckle 4212 . The backlight assembly 20 is specifically disposed between the second buckle 112 and the main body portion 41 , and is in contact with the step portion 42 .

It is worth noting that the back plate 40 can be directly used as the casing of the complete machine, without the need for downstream complete machine factories to assemble the casing, thereby saving costs.

Optionally, the angle between a side of the first engaging portion 4212 away from the step portion 42 and the step portion 42 is an acute angle, that is, relative to the step portion 42 , the first engaging portion The side of 4212 away from the step portion 42 is specifically provided in an inclined plane to facilitate the buckling of the first buckle 421 and the second buckle 112 formed correspondingly to the first buckle portion 4212 .

Furthermore, the outer edge of the outer frame 11 is provided with a recessed portion (not shown) corresponding to each first buckle 421, and the second buckle 112 further includes a second connecting portion. 1121 and the second clamping portion 1122. One end of the second connecting portion 1121 is connected to the inner wall of the corresponding recessed portion of the outer frame member 11, and the other end of the second connecting portion 1121 is connected to one end of the second clamping portion 1122.

The other end of the second locking portion 1122 extends obliquely toward the inner side of the outer frame 11 to facilitate engagement with the first buckle 421 .

Optionally, the first included angle n between the side edge connecting the first connecting portion 4211 and the step portion 42 and the outer edge of the step portion 42 is 30-45 degrees, so that it can be rotated with the second locking portion. The fasteners 112 are fastened together to ensure the reliability of the connection between the two, simplify the assembly between the back plate 40 and the outer frame member 11 , and facilitate subsequent rework of the backlight module 1 .

Optionally, the second included angle n between the second buckling portion 1122 and the outer edge of the outer frame member 11 is 5-10 degrees larger than the first included angle n, so as to facilitate the rotation of the first buckling member 421 It is locked into the second buckle 112 .

Optionally, the back plate 40 can be made of any reasonable material that is easy to achieve flatness, such as glass or plastic, so as to greatly improve the warpage yield and thinness of the product. This application does not cover this issue. Make limitations.

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

Optionally, the first limiting block 121 can specifically limit the optical film 30 so that when the optical film 30 expands due to heat, it can first contact the first limiting block 121 to prevent the optical film 30 from damaging the backlight. The light emitting chip on the source component 20.

It can be understood that the backlight module 1 is specifically based on the frame assembly 10 and other components in the backlight module 1 are installed, so that the backplane 40 can be made of lightweight glass or plastic to avoid using Manufacturing the galvanized steel plate can effectively ensure the flatness of the back plate 40 and ensure that the backlight module 1 can achieve better optical parameters.

It is worth noting that the specific assembly sequence of the backlight module 1 is: sequentially install the backlight assembly 20, the optical film 30, and the back plate 40 to the frame assembly 10, so that the back plate 40 does not need to provide strength support for other components. Thereby, the backplane 40 can be ensured to be flat, so as to ensure that the backlight module 1 can achieve better optical parameters.

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

Among them, the backlight module 62 described in this embodiment is the backlight module 1 described in any one of the above embodiments. For details, please refer to Figures 1 to 8 and related text descriptions, which will not be described again here.

Different from the situation in the prior art, the support step of the frame assembly in the backlight module provided by this application is provided with at least two first limiting blocks at intervals, and the at least two first limiting blocks are in contact with the outer frame member. The first sides are spaced apart to form a first locking part, and the backlight component is specifically stuck in the first locking part to connect with the frame component, thereby effectively ensuring that the backlight component is protected even when heated. It can still be reliably connected to the frame component, and at the same time, it avoids the use of tape that affects heat dissipation, and reduces the overall thickness of the backlight module.

The above descriptions are only embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the present application, or directly or indirectly applied to other related technologies fields are equally included in the scope of patent protection of this 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.