CN212433546U

CN212433546U - Backlight module and display device

Info

Publication number: CN212433546U
Application number: CN202020813116.8U
Authority: CN
Inventors: 邓芳光
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-01-29
Anticipated expiration: 2030-05-15

Abstract

The utility model belongs to the liquid crystal display field to specifically disclose a backlight unit and display device. Backlight unit includes the optics diaphragm and sets up in the frame subassembly of optics diaphragm circumference, and the optics diaphragm includes that body and a plurality of protrusion set up the hangers in the circumference of body, has seted up on the hangers and has hung the hole, and the frame subassembly includes the supporting part, and the protrusion is provided with and hangs the post that hangs that the hole was pegged graft on the supporting part, corresponds every hangers on the frame subassembly and all is provided with one and dodges the portion, dodges the portion and has the space that holds when supplying the hangers inflation. The display device comprises the backlight module. The utility model discloses a frame subassembly itself alright hold the inflation volume of hangers to make frame subassembly's width size can be done littleer, and then make whole display device's frame width reduce, accord with the development direction of narrow frame, display area is bigger, and the display effect is better.

Description

Backlight module and display device

Technical Field

The utility model relates to a liquid crystal display field especially relates to a backlight module and display device.

Background

As electronic products become more popular, liquid crystal display devices are applied more widely. In the liquid crystal display device, the optical film functions to further change light in the light source into a uniform surface light source. The optical diaphragm is hung on the back plate through the hanging lug and is pressed on the back plate through the frame component. Because the optical film needs certain expansion space, certain expansion clearance can be reserved between the frame assembly and the hangers of the optical film in design and processing, so that the width of the frame assembly is large, and narrow frame design is difficult to realize.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the width dimension of the frame component is small, and the backlight module accords with the development direction of a narrow frame.

The embodiment of the utility model provides a purpose still lies in: provided is a display device having a narrower overall frame.

To achieve the purpose, the embodiment of the utility model adopts the following technical scheme:

in a first aspect, the backlight module comprises an optical membrane and a frame assembly arranged in the circumferential direction of the optical membrane, wherein the optical membrane comprises a body and a plurality of hanging lugs arranged in the circumferential direction of the body in a protruding mode, hanging holes are formed in the hanging lugs, the frame assembly comprises a supporting portion, hanging columns connected with the hanging holes in an inserting mode are arranged on the supporting portion in a protruding mode, an avoiding portion is arranged on each corresponding hanging lug on the frame assembly, and the avoiding portion is provided with a space for accommodating the hanging lugs when the hanging lugs expand. Dodge the portion and hold the expansion volume that the hangers produced when being heated and expanded because of environmental change, avoid hangers and whole optical film deformation to damage, simultaneously with present need reserve the expansion gap between the hangers of frame subassembly and optical film and compare, the frame subassembly itself of this embodiment alright hold the expansion volume of hangers to make the width size of frame subassembly can do littleer, and then make whole display device's frame width reduce, accord with the development direction of narrow frame, display area is bigger, the display effect is better.

As a preferred scheme of the backlight module, the avoiding part is an avoiding groove formed in the frame component, and a notch of the avoiding groove is formed towards the hanging lug; or the like, or, alternatively,

the avoiding part is an avoiding hole formed in the frame component. The notch of the avoiding groove is arranged towards the hanging lug to accommodate the hanging lug. The avoiding groove can be obtained by directly cutting and processing the frame assembly or by locally pressing and deforming the frame assembly, and a reinforcing rib is formed in the side, away from the optical diaphragm, of the frame assembly corresponding to the avoiding groove, so that the strength of the frame assembly is improved. The avoiding hole penetrates through the frame assembly, the processing is convenient, and the heat dissipation effect can be achieved.

As a preferred scheme of the backlight module, the avoiding part is an avoiding hole formed in the frame assembly, and one side, away from the hanging lug, of the frame assembly is provided with a light shading piece for plugging the avoiding hole. The light shielding piece can avoid light leakage from the avoiding hole, and the display effect is improved.

As a preferable mode of the backlight module, the light shielding member is a black light shielding film. The shading effect is good, and the structure is frivolous simultaneously, avoids increasing the width and the weight of frame subassembly.

As a preferred scheme of the backlight module, the hanging lug is strip-shaped, and the avoiding groove is a kidney-shaped groove or an elliptical groove; or the like, or, alternatively,

the avoiding hole is a waist-shaped hole or an elliptical hole. The optical film has the advantages that certain expansion gaps of the hangers are reserved in the extension flat surface of the optical film and in the direction perpendicular to the groove depth or the hole depth, the contact area between the hangers and the avoiding groove or the avoiding hole is increased, the hangers are prevented from being extruded or abraded, the deformation of the hangers is reduced, meanwhile, the hangers can be inserted into the avoiding groove or the avoiding hole more easily, the assembly is convenient, the positions of the hangers in the avoiding groove or the avoiding hole can be finely adjusted, the processing precision requirement on the avoiding groove or the avoiding hole is lower, the production efficiency is improved, meanwhile, structures with sharp angles such as rectangular grooves or rectangular holes are prevented from being directly arranged on the frame assembly, and the deformation of the frame assembly caused by the concentration of local stress is prevented.

As a preferred scheme of the backlight module, the edge of the notch of the avoidance groove is provided with an arc chamfer; or the like, or, alternatively,

an arc chamfer is arranged at the edge of one end of the avoidance hole close to the hanging lug; or the like, or, alternatively,

and the edges of the two ends of the avoiding hole are provided with arc chamfers. Avoiding the occurrence of sharp edges or edges to scratch hangers or assembly personnel.

As a preferable scheme of the backlight module, the frame assembly includes a first frame, the first frame includes a pressing portion and a stopping portion, the pressing portion presses the body and the hanging lug, the stopping portion is disposed on one side of the hanging lug away from the body, and the avoiding portion is disposed on the first frame. The pressing part presses the optical film to limit the optical film along the thickness direction of the optical film, and the stopping part can avoid lateral light leakage.

As a preferable scheme of the backlight module, a groove is concavely arranged on one side of the pressing part close to the optical diaphragm, and one end of the suspension column far away from the supporting part is inserted into the groove. The installation and positioning between the first frame and the suspension column are facilitated, and the optical diaphragm is prevented from being collided or abraded in the assembling process.

As a preferable scheme of the backlight module, the backlight module further comprises a back plate, the frame assembly is arranged at the edge of the back plate, a first connecting portion is convexly arranged on one side, away from the optical membrane, of the stopping portion, a second connecting portion is convexly arranged on one side, away from the center of the back plate, of the supporting portion, the second connecting portion and the first connecting portion are sequentially stacked on the back plate, and the fastening piece penetrates through the back plate and the second connecting portion and is connected with the first connecting portion. The installation of the first frame and the supporting part on the back plate is realized, and the second connecting part which is convexly arranged on the supporting part is pressed on the back plate by the first connecting part of the first frame.

As a preferable scheme of the backlight module, the optical film is rectangular, and the two opposite side edges of the optical film are convexly provided with the hanging lugs; or the like, or, alternatively,

the three side edges of the optical membrane are convexly provided with the hanging lugs; or the like, or, alternatively,

the four side edges of the optical membrane are provided with the hanging lugs in a protruding mode. The lugs are convexly arranged on two opposite side edges of the optical membrane to ensure the stable installation of the optical membrane on the frame component; the lugs are arranged on the four sides of the optical diaphragm in a protruding mode, so that the whole stress balance of the optical diaphragm is guaranteed, and the whole flatness of the optical diaphragm is improved. The three side bulges of the optical film are provided with the hanging lugs, so that the optical film is mainly suitable for the splicing condition of two display devices, and the frame component on the corresponding splicing side is not provided with a hanging column.

In a second aspect, a display device is provided, which includes the backlight module as described above. The whole frame is narrower, the display range is larger, and the display effect is better.

The utility model discloses beneficial effect does:

offer on the frame subassembly and dodge the portion in order to hold the expansion volume that produces when the hangers is heated and expands because of environmental change, avoid hangers and whole optical film deformation to damage, simultaneously with present reservation expansion gap between the hangers of frame subassembly and optical film compare, the frame subassembly itself of this embodiment alright hold the expansion volume of hangers, thereby make the width size of frame subassembly can be done littleer, and then make the frame width of whole display device also corresponding reduction, accord with the development direction of narrow frame, display area is bigger, the display effect is better.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partially enlarged view of B in fig. 1.

In the figure:

1. a back plate; 2. a frame component; 21. a first frame; 211. a pressing part; 2111. a groove; 212. a stopper portion; 213. a first connection portion; 214. an avoidance part; 22. a second frame; 221. a support portion; 222. a suspension post; 223. a second connecting portion; 3. an optical film; 31. a body; 32. hanging a lug; 321. a hanging hole; 4. a light guide plate; 5. a backlight source.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 and fig. 2, the backlight module provided in this embodiment includes a back plate 1, a frame assembly 2, an optical film 3, a light guide plate 4, and a backlight source 5. The backlight source 5, the light guide plate 4 and the optical film 3 are sequentially arranged on the back plate 1. The frame assembly 2 is located at the circumference of the light guide plate 4 and the optical film 3.

Specifically, the optical film 3 includes a body 31 and a plurality of lugs 32 protruding from the body 31 in the circumferential direction. The bezel assembly 2 includes a support portion 221. The edge of the light guide plate 4, the edge of the body 31 and the hanging lug 32 are all placed on the supporting part 221, and the supporting part 221 is used as a supporting carrier of the light guide plate 4 and the optical film 3. The light guide plate 4 is provided with an insertion hole, the hanging lug 32 is provided with a hanging hole 321, the supporting part 221 is convexly provided with hanging columns 222 which are in one-to-one correspondence with the hanging holes 321, and the hanging columns 222 penetrate through the insertion hole and the hanging holes 321 so as to install and position the light guide plate 4 and the optical diaphragm 3. Each of the frame members 2 is provided with an avoiding portion 214 corresponding to each of the hanging lugs 32, and the avoiding portion 214 has a space for accommodating the hanging lug 32 when the hanging lug is expanded.

In this embodiment, the portion 214 of dodging of frame subassembly 2 holds the inflation volume that produces when hangers 32 are heated the inflation because of the environmental change, avoid hangers 32 and whole optical film 3 to warp and damage, simultaneously with present need reserve the inflation clearance between the hangers of frame subassembly and optical film and compare, frame subassembly 2 of this embodiment itself alright hold the inflation volume of hangers 32, thereby make frame subassembly 2's width size can do littleer, and then make whole display device's frame width corresponding reduction thereupon, accord with the development direction of narrow frame, display area is bigger, the display effect is better.

Preferably, the avoiding portion 214 can be an avoiding hole or an avoiding groove formed on the frame member 2 to accommodate the expansion amount of the hanging lug 32. The avoiding hole penetrates through the frame assembly 2, the processing is convenient, and the heat dissipation effect can be achieved. The notch of the avoiding groove opens towards the hanging lug 32 to accommodate the hanging lug 32. The avoiding groove can be obtained by directly cutting the frame assembly 2 or by locally pressing and deforming the frame assembly 2, and a reinforcing rib is formed on one side of the frame assembly 2, which is far away from the optical film 3, corresponding to the avoiding groove, so that the strength of the frame assembly 2 is improved.

Optionally, when the hanging lug 32 is shrunk by cold or expanded without heat or has a small expansion amount, a part of the hanging lug 32 is located in the avoiding hole or the avoiding groove, that is, a part of the hanging lug 32 is always located in the avoiding hole or the avoiding groove, so that the width of the frame assembly 2 is further reduced, and the optical film 3 can be prevented from moving in the extending surface. Of course, when the hanging lug 32 is shrunk by cooling, expanded without heating or has a small expansion amount, the hanging lug 32 may also be located outside the avoidance hole or the avoidance groove, and the avoidance portion 214 is not limited herein as long as it is ensured that there is enough expansion space for the hanging lug 32.

In this embodiment, the avoiding portion 214 is an avoiding hole formed in the frame assembly 2, and a light shielding member (not shown) for blocking the avoiding hole is disposed on a side of the frame assembly 2 away from the hanging lug 32, so as to avoid light leakage and improve display effect. The shading member is preferably a black shading film, which has a good shading effect and a light and thin structure, and avoids increasing the width and weight of the frame assembly 2. The black shading film can be bonded on the frame component 2, seamless connection is realized, and light leakage is effectively avoided. In other embodiments, the light-shielding member may be made of a light-absorbing material with certain elasticity, or the light-shielding member may be partially blocked in an end of the avoiding hole away from the hanging lug 32.

In one embodiment, the hanging lug 32 is a strip shape, and correspondingly, the avoiding groove is a kidney-shaped groove or an elliptical groove, or the avoidance hole is a waist-shaped hole or an elliptical hole, so that a certain expansion gap of the hanging lug 32 is reserved in the extension plane of the optical diaphragm 3 and in the direction vertical to the groove depth or the hole depth, the contact area of the hanging lug 32 and the avoidance groove or the avoidance hole is increased, the hanging lug 32 is prevented from being extruded or abraded, and the hanging lug 32 is prevented from being deformed, meanwhile, the hanging lug 32 is easier to insert into the avoiding groove or the avoiding hole, the assembly is convenient, the position of the hanging lug 32 in the avoiding groove or the avoiding hole can be finely adjusted, the mounting precision of the optical diaphragm 3 is improved, the requirement on the processing precision of the avoiding groove or the avoiding hole is lower, the production efficiency is improved, meanwhile, structures with sharp corners, such as rectangular grooves or rectangular holes, are prevented from being directly formed in the frame assembly 2, and deformation of the frame assembly 2 caused by local stress concentration is prevented. Of course, the hanging lug 32 may also be in other shapes such as a semi-circle shape or a semi-ellipse shape, and the avoiding hole may be correspondingly in other shapes such as a waist-shaped hole or an elliptical hole, so as to ensure that the hanging lug 32 has a sufficient expansion space.

Further, an arc chamfer can be arranged on the edge of one end or two ends of the avoidance hole close to the hanging lug 32, or an arc chamfer is arranged on the edge of the notch of the avoidance groove, so that the hanging lug 32 or assembly personnel can be prevented from being scratched by sharp edges or edges.

In addition, two sides of one end of the suspension column 222, which is far away from the supporting part 221, can be rounded, so that the hanging lug 32 is prevented from being scratched or an assembling worker is prevented from doing the assembling process.

Preferably, the cross-section of the supporting portion 221 is frame-shaped or rectangular, and ensures that the upper surface thereof is effectively contacted with the body 31 and the hanging lug 32 of the optical film 3, so as to stably support the optical film 3,

in this embodiment, the frame assembly 2 includes a first frame 21 and a second frame 22. The first frame 21 includes a pressing portion 211 and a stopping portion 212 arranged at an included angle. The second frame 22 includes the supporting portion 221 and the hanging post 222. The supporting portion 221 is connected to the back plate 1 and supports the optical film 3. The pressing portion 211 is disposed on a side of the optical film 3 away from the supporting portion 221, and the pressing portion 211 presses against the edge of the body 31 and the hanging lug 32 to limit the optical film 3 along the thickness direction thereof. The stopping portion 212 is disposed on one side of the hanging lug 32 away from the body 31 to prevent lateral light leakage.

Preferably, the pressing portion 211 and the stopping portion 212 are vertically arranged, the first frame 21 is L-shaped, the pressing portion 211 and the stopping portion 212 form a clamping groove, and the first frame 21 is clamped with the optical film 3 and the supporting portion 221 of the second frame 22 through the clamping groove, so that the installation and the positioning are convenient. When assembling the backlight module, the first screw may be used to lock the supporting portion 221 of the second frame 22 on the back plate 1, and then the second screw may be used to lock the stopping portion 212 of the first frame 21 on the supporting portion 221 of the second frame 22.

The escape portion 214 is opened in the first frame 21. Specifically, the escape portion 214 should be opened at least on the stopper portion 212. Exemplarily, the avoiding part 214 is completely arranged on the stopping part 212, and the avoiding part 214 is not arranged on the pressing part 211, so that the processing is convenient; or the avoiding part 214 comprises a first avoiding part and a second avoiding part which are communicated, the first avoiding part is arranged on the stopping part 212, the second avoiding part is arranged on the pressing part 211, the hanging lug 32 can completely extend into the avoiding part 214, and the expansion deformation of the hanging lug 32 in the extending plane and the thickness direction can be accommodated. For the situation that the avoiding hole is completely opened on the stopping portion 212, an edge of one end of the avoiding hole close to the pressing portion 211 may be overlapped with a connection portion of the stopping portion 212 and the pressing portion 211, so that the hanging lug 32 completely extends into the avoiding hole. Of course, the arrangement of the escape portion 214 can be selected according to the circumstances.

Preferably, foam is arranged between the pressing portion 211 and the body 31 and the hanging lug 32, the foam has certain elasticity and rigidity, the pressing portion 211 is prevented from being directly in rigid contact with the body 31 and the hanging lug 32 to damage the body 31 and the hanging lug 32, and the foam also has a buffering effect and allows the body 31 and the hanging lug 32 to deform slightly in the thickness direction due to environmental changes.

In order to facilitate the installation and positioning between the first frame 21 and the second frame 22 and avoid the optical film 3 from being collided or worn in the assembling process, a groove 2111 is concavely formed on one side of the pressing portion 211 of the first frame 21 close to the optical film 3, and one end of the suspension column 222 far away from the supporting portion 221 passes through the suspension hole 321 and is inserted into the groove 2111. Of course, a through hole corresponding to the hanging post 222 may be formed in the pressing portion 211, and the hanging post 222 may be inserted into the through hole.

In one embodiment, the first frame 21 of the frame assembly 2 is not limited to the L-shape, but may have other shapes, such as a zigzag shape of the first frame 21. Specifically, referring to fig. 3, the first frame 21 further includes a first connection portion 213, and the first connection portion 213 is convexly disposed on a side of the stopping portion 212 away from the optical film 3. Correspondingly, the second frame 22 further includes a second connecting portion 223, and the second connecting portion 223 is convexly disposed on one side of the supporting portion 221 away from the center of the back plate 1. When assembling the backlight module, the first frame 21 presses the second connecting portion 223 of the second frame 22 against the back plate 1 through the first connecting portion 213, and then the first frame and the second frame are locked on the back plate 1 by using a fastener. The fasteners are preferably screws or bolts.

The optical film 3 is preferably rectangular, and the frame assembly 2 includes an upper frame, a lower frame, a left frame and a right frame disposed around the optical film 3, and the four frames each include a first frame 21 and a second frame 22. The structures of the four frames may be identical, that is, the first frames 21 of the four frames are all L-shaped or all zigzag, the L-shaped first frames 21 are used in cooperation with the second frames 22 without the second connecting portions 223, and the zigzag-shaped first frames 21 are used in cooperation with the second frames 22 with the second connecting portions 223. Or, at least one of the four frames has a different structure from the other frames, for example, the first frame 21 of the left frame is L-shaped, and the first frame 21 of the right frame is Z-shaped.

Further, the hanging lug 32 can be protruded from two opposite sides of the optical film 3, and the hanging columns 222 are arranged on the corresponding upper frame and the corresponding lower frame, or the hanging lug 32 is protruded from two opposite sides of the optical film 3, and the hanging columns 222 are arranged on the corresponding left frame and the corresponding right frame, so that the stable installation of the optical film 3 on the frame assembly 2 is ensured. Of course, the hanging lugs 32 can be protruded from four sides of the optical film 3, and the suspension columns 222 are disposed on the corresponding upper frame, lower frame, left frame and right frame, so as to ensure the overall stress balance of the optical film 3 and improve the overall flatness of the optical film 3. Of course, the hanging lugs 32 may be protruded from three sides of the optical film 3, which is not limited herein, and this is mainly applicable to the case of splicing two display devices, and the hanging columns 222 are not disposed on the frame assembly 2 corresponding to the spliced side.

It should be noted that the frame assembly 2 of the present embodiment is a split structure, and includes a first frame 21 and a second frame 22. In other embodiments, the first frame 21 and the second frame 22 may also be an integral structure, which is convenient to process and has high strength, and the frame assembly 2 may be integrally extruded without connecting members.

It should be noted that the supporting portion 221 of the present embodiment is an elongated strip extending along the corresponding side of the optical film 3, so as to ensure the contact area with the optical film 3, and to stably support the optical film 3. In other embodiments, the supporting portion 221 may also be a plurality of partial supporting structures spaced around the circumference of the optical film 3, and each partial supporting structure is provided with a suspension column 222. Alternatively, the supporting portions 221 disposed at intervals may be of a separate structure, or of an integral structure with the first frame 21, or of an integral structure with the back plate 1.

The embodiment further provides a display device, which comprises the backlight module, the whole frame is narrower, the display range is larger, and the display effect is better.

In the description herein, it is to be understood that the terms "upper" and the like are used in a descriptive sense and based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, configuration and operation in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description herein, references to the description of "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that may be understood by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a backlight module, includes the optics diaphragm and set up in the frame subassembly of optics diaphragm circumference, the optics diaphragm includes that body and a plurality of protrusion set up the hangers of the circumference of body, seted up on the hangers and hung the hole, the frame subassembly includes the supporting part, the protrusion is provided with on the supporting part with hang the post that hangs that the hole was pegged graft, its characterized in that, correspond every on the frame subassembly the hangers all is provided with one and dodges the portion, dodge the portion have the confession the space that holds when the hangers inflation.

2. The backlight module according to claim 1, wherein the avoiding portion is an avoiding groove formed in the frame assembly, and a notch of the avoiding groove is formed toward the hanging lug; or the like, or, alternatively,

the avoiding part is an avoiding hole formed in the frame component.

3. The backlight module according to claim 1, wherein the avoiding portion is an avoiding hole formed in the frame assembly, and a light shielding member for blocking the avoiding hole is disposed on a side of the frame assembly away from the hanging lug.

4. The backlight module as claimed in claim 3, wherein the light-shielding member is a black light-shielding film.

5. The backlight module according to claim 2, wherein the hanging tabs are elongated, and the avoiding grooves are slots with a shape of kidney or ellipse; or the like, or, alternatively,

the avoiding hole is a waist-shaped hole or an elliptical hole.

6. The backlight module according to claim 2, wherein the notch edge of the avoiding groove is provided with a circular arc chamfer; or the like, or, alternatively,

and the edges of the two ends of the avoiding hole are provided with arc chamfers.

7. The backlight module according to any of claims 1-6, wherein the frame assembly comprises a first frame, the first frame comprises a pressing portion and a stopping portion, the pressing portion presses against the body and the hanging lug, the stopping portion is disposed on a side of the hanging lug away from the body, and the avoiding portion is disposed on the first frame.

8. The backlight module according to claim 7, wherein a groove is recessed on a side of the pressing portion close to the optical film, and one end of the hanging column far from the supporting portion is inserted into the groove.

9. The backlight module according to claim 7, further comprising a back plate, wherein the frame assembly is disposed at an edge of the back plate, a first connecting portion is protruded from a side of the stopping portion away from the optical film, a second connecting portion is protruded from a side of the supporting portion away from a center of the back plate, the second connecting portion and the first connecting portion are sequentially stacked on the back plate, and a fastening member passes through the back plate and the second connecting portion and is connected to the first connecting portion.

10. The backlight module according to any one of claims 1-6, wherein the optical film is rectangular, and two opposite sides of the optical film are provided with the hanging lugs in a protruding manner; or the like, or, alternatively,

the four side edges of the optical membrane are provided with the hanging lugs in a protruding mode.

11. A display device comprising a backlight module according to any one of claims 1-10.