CN113671753B

CN113671753B - Backlight module and display device

Info

Publication number: CN113671753B
Application number: CN202110956922.XA
Authority: CN
Inventors: 林雨航; 章晗; 胡隆; 郭志杰; 刘成坤; 周清恩
Original assignee: BOE Technology Group Co Ltd; Fuzhou BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Fuzhou BOE Optoelectronics Technology Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2023-06-09
Anticipated expiration: 2041-08-19
Also published as: CN113671753A

Abstract

The invention discloses a backlight module and a display device, comprising: the lamp comprises a back plate, a lamp panel, a diffusion plate and a plurality of groups of silk thread components; the backboard comprises a bottom plate and a plurality of side plates which are arranged on the periphery side of the bottom plate in a surrounding manner and are perpendicular to the bottom plate, and the side plates and the bottom plate are matched to form an accommodating space which is provided with an opening towards one side far away from the bottom plate; the multiunit silk thread subassembly is located between diffuser plate and the lamp plate, and every silk thread subassembly of group includes many silk threads, and every silk thread passes the accommodation space's of backplate opening, and the tensioning in the curb plate of backplate, and multiunit silk thread subassembly mutually support and form the supporter that is used for supporting the diffuser plate subassembly, and multiunit silk thread subassembly supports the diffusion, can enough promote the effective visual angle of product, is convenient for realize no frame/narrow frame design, alleviates display device's overall quality, has bigger more dispersed holding surface again simultaneously, has effectively reduced the inefficacy risk of diffuser plate when mechanical shock.

Description

Backlight module and display device

Technical Field

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

Background

With the rapid progress of the manufacturing technology of the liquid crystal display (liquid crystal display, abbreviated as LCD), the liquid crystal display has the advantages of light weight, low power consumption, no radiation, etc., so that the liquid crystal display is widely applied to various electronic products such as notebook computers, digital cameras, digital video cameras, mobile phones, computer screens, liquid crystal televisions, etc. However, since the lcd panel in the lcd is a non-self-luminous display panel, a light source provided by the backlight module is needed to generate the display function.

The commonly used backlight module comprises a side-in type backlight module and a direct type backlight module. In the direct type backlight module, considering the prior art level and cost, the distance between the lamp beads is usually not very tight, which results in the need of adding a Diffusion Plate (DP) in the backlight module to mix light, so as to avoid the defects of uneven brightness and the like of the picture. Due to the structure of the lamp panel/the lamp bead and the limitation of the thickness of the DP, the DP needs to be supported, and a certain space is reserved to reach a sufficient Optical Distance (OD).

The mode that supports DP that current is commonly used has vice frame support and support to glue, and traditional vice frame support mode needs DP periphery to have sufficient holding area, and this just leads to can't realize no frame/narrow frame design to cause the visual angle of picture little easily, picture transition inequality scheduling problem. The support mode needs to arrange enough transparent supports inside the backlight source to support the DP in a point shape. Along with the lamp pearl on the lamp plate is arranged more and more inseparable, the support arrangement space and structural strength can't satisfy the demand, drops easily when mechanical shock, and because be the point support, wear DP more easily, cause the picture bad.

Disclosure of Invention

The embodiment of the invention provides a backlight module and a display device, which can realize the design of no frame or narrow frame and reduce the failure risk of a diffusion plate in mechanical vibration.

In a first aspect, an embodiment of the present invention provides a backlight module, including:

the backboard comprises a bottom board and a plurality of side boards which are arranged around the periphery of the bottom board and are vertical to the bottom board;

the lamp panel is arranged on the bottom plate;

the diffusion plate is positioned at one side of the lamp panel away from the bottom plate;

the wire assemblies are positioned between the diffusion plate and the lamp panel, each wire assembly comprises a plurality of wires, each wire penetrates through the opening of the containing space and is tensioned on the side plate of the back plate, and the wire assemblies are matched with each other to form a support body for supporting the diffusion plate assembly.

In some embodiments of the invention, the wires in each set of the wire assemblies are parallel to each other, and the spacing distance between each two adjacent wires is equal.

In some embodiments of the invention, the spacing distance between each adjacent two wires is 20-100mm.

In some embodiments of the invention, the plurality of sets of wire assemblies includes a first wire assembly and a second wire assembly; wherein the direction of extension of the filaments in the first filament assembly crosses the direction of extension of the filaments in the second filament assembly.

In some embodiments of the invention, the bottom plate is rectangular in shape; the extending direction of the wires in the first wire assembly is parallel to the long side of the bottom plate, and the extending direction of the wires in the second wire assembly is parallel to the short side of the bottom plate.

In some embodiments of the present invention, the shape of the bottom plate is rectangular, and the extending direction of the wires in each wire assembly is parallel to the long side of the bottom plate; alternatively, the wires in each wire assembly extend in a direction parallel to the short sides of the base plate.

In some embodiments of the present invention, the side plates are provided with groove groups corresponding to the wire assemblies in one-to-one correspondence; the groove group comprises a plurality of groove structures which are in one-to-one correspondence with the silk threads in the silk thread assembly, and two ends of the silk threads are respectively sleeved in the groove structures.

In some embodiments of the present invention, both ends of the wire are fixed in the groove structure by sleeves, and the orthographic projection of the sleeves on the bottom plate and the orthographic projection of the diffusion plate on the bottom plate do not overlap.

In some embodiments of the present invention, each groove structure includes a first groove and a second groove, the width of the first groove is greater than the width of the second groove, and the wire passes through the second groove from the accommodating space and passes through the first groove after being bent;

the backlight module further comprises:

the glue frame surrounds and seals the periphery of the backlight module; the rubber frame comprises a plurality of protruding structures which are in one-to-one correspondence with the first grooves; the protruding structure is arranged on the bottom wall and/or the side wall of the first groove, and the part of the wire penetrating through the first groove is fixed on the side plate.

In some embodiments of the invention, the wire is made of steel or tungsten; the cross section of the silk thread along the direction perpendicular to the silk thread is circular.

In some embodiments of the present invention, the thread is made of one of polymethyl methacrylate, polycarbonate or methyl methacrylate-styrene copolymer; the yarn is circular in section along the direction perpendicular to the yarn.

In a second aspect, an embodiment of the present invention provides a display device, including a display panel and any one of the above backlight modules.

The backlight module and the display device provided by the embodiment of the invention comprise: the lamp comprises a back plate, a lamp panel, a diffusion plate and a plurality of groups of silk thread components; the backboard comprises a bottom plate and a plurality of side plates which are arranged on the periphery side of the bottom plate in a surrounding manner and are perpendicular to the bottom plate, and the side plates and the bottom plate are matched to form an accommodating space which is provided with an opening towards one side far away from the bottom plate; the multiunit silk thread subassembly is located between diffuser plate and the lamp plate, and every silk thread subassembly of group includes many silk threads, and every silk thread passes accommodation space's opening, and the tensioning in the curb plate of backplate, multiunit silk thread subassembly mutually support and form the supporter that is used for supporting the diffuser plate subassembly, and multiunit silk thread subassembly supports the diffusion, can enough promote the effective visual angle of product, is convenient for realize no frame/narrow frame design, alleviates display device's overall quality, has bigger more dispersed holding surface simultaneously, has effectively reduced the inefficacy risk of diffuser plate when mechanical shock.

Drawings

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

FIG. 1 is a schematic cross-sectional view of a display device;

FIG. 2a is a schematic diagram of a partial cross-sectional structure of a display device according to the prior art;

FIG. 2b is a schematic diagram showing a partial cross-sectional structure of a display device according to the prior art;

fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present invention;

FIG. 4 is a partial top view of a backlight module according to an embodiment of the invention;

FIG. 5 is a second partial top view of the backlight module according to the embodiment of the invention;

FIG. 6 is a third partial top view of a backlight module according to an embodiment of the invention;

fig. 7 is a schematic view of a partial perspective structure of a side plate according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a partial cross-sectional structure of a backlight module according to an embodiment of the present invention;

fig. 9 is a partial top view of a backlight module according to an embodiment of the invention.

The backlight module comprises a 100-backlight module, a 200-display panel, a 11-back plate, a 12-lamp panel, a 13-diffusion plate, a 14-optical film, a 15-wire component, a 16-glue frame, a 17-sleeve, a 111-bottom plate, a 112-side plate, a 121-circuit board, a 122-light source, a 123-reflecting layer, a 1211-substrate, a 1212-circuit layer, a 150-wire, a 160-bulge structure, a 15-1-first wire component, a 15-2-second wire component, a 1120-groove group, a 1120-1-groove structure, a 1120-11-first groove and a 1120-12-second groove.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a further description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted. The words expressing the positions and directions described in the present invention are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present invention. The drawings of the present invention are merely schematic representations of relative positional relationships and are not intended to represent true proportions.

The LCD is mainly composed of a backlight module and an LCD panel. The liquid crystal display panel does not emit light and needs to realize brightness display by means of a light source provided by the backlight module.

The display principle of LCD is to put liquid crystal between two pieces of conductive glass, and drive the electric field between two electrodes to cause the electric field effect of liquid crystal molecule distortion to control the transmission or shielding function of backlight source, so as to display the image. If a color filter is added, a color image can be displayed.

Fig. 1 is a schematic cross-sectional view of a display device.

Referring to fig. 1, the display device includes: a backlight module 100 and a display panel 200. The display panel 200 does not emit light, and a backlight module is required to be disposed on the light incident side to provide a light source, wherein the direct type backlight module is a commonly used backlight module. When the backlight module adopts the direct type backlight module, the direct type backlight module is used for uniformly emitting light in the whole light emitting surface and providing light with sufficient brightness and uniform distribution for the display panel so that the display panel can normally display images.

The backlight module 100 generally includes: back plate, lamp panel, diffusion plate and optical film; the backboard is positioned at the bottom of the display device and is used for supporting and bearing other optical devices; the lamp panel is fixed on the bottom plate of the backboard and used as a backlight source; the diffusion plate is positioned at the light-emitting side of the lamp panel and is used for scattering incident light, so that the light passing through the diffusion plate is more uniform; the optical film may include a variety of functional films for optimizing the display effect of the display device. Since the diffusion plate needs to cover the area where all the lamp panels are located, the diffusion plate has a relatively large size and is easy to collapse, warp and deform, so that the optical characteristics of the backlight module are poor, and the diffusion plate needs to be supported.

The conventional supporting mode for the diffusion plate comprises an auxiliary rubber frame supporting mode and a support supporting mode. Referring to fig. 2a, the conventional auxiliary frame support method requires that the diffusion plate 13 has enough support area around the periphery to set the auxiliary frame M, which results in that no frame/narrow frame design can be achieved, and the problem of small visual angle of the picture, uneven transition of the picture and the like is easily caused. Referring to fig. 2b, the bracket support method requires arranging enough brackets N inside the backlight source to support the diffusion plate 13 in a dot shape. Along with the light source arrangement on the lamp panel is more and more compact, the space and the structural strength of the bracket arrangement can not meet the requirements, the bracket is easy to fall off during mechanical vibration, and the diffusion plate 13 is damaged due to point support, so that poor pictures are caused.

Therefore, the embodiment of the invention provides a backlight module, which can not only improve the effective visual angle of a product and facilitate the realization of the borderless/narrow-border design, but also has a larger and more dispersed supporting surface for the diffusion plate, thereby effectively reducing the failure risk of the diffusion plate in mechanical vibration.

Fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Referring to fig. 3, the backlight module includes: the device comprises a back plate 11, a lamp panel 12, a diffusion plate 13, an optical film 14 and a plurality of groups of wire assemblies 15.

The back plate 11 is located at the bottom of the backlight module, and has supporting and bearing functions, and the back plate 11 includes a bottom plate 111 and a plurality of side plates 112 surrounding the bottom plate 111 and perpendicular to the bottom plate 111, as shown in fig. 3, the side plates 112 of the back plate 11 cooperate with the bottom plate 111 to form an accommodating space, and the accommodating space is open at one side far away from the bottom plate 111.

The lamp panel 12 is disposed in the accommodating space and mounted on the bottom plate 111. Specifically, as shown in fig. 3, the lamp panel 12 may include: a circuit board 121, a light source 122 and a light reflecting layer 123.

The circuit board 121 includes a substrate 1211 and a wiring layer 1212, the substrate 1211 is located above the base plate 111, and the shape of the substrate 1211 is the same as the overall shape of the lamp panel 12. The wiring layer 1212 is deposited on the substrate 1211 by electroplating of a conductive material, and the wiring is etched as needed.

The light source 122 is located on the circuit layer 1212, and after the circuit layer 1212 is fabricated, a bonding pad for bonding the light source 122 is formed on the surface of the circuit layer 1212, and the light source 122 is bonded on the bonding pad, so that the light source 122 is driven to emit light by the driving signal of the control circuit layer 1212. The light source 122 provided in the embodiment of the present invention may be a light emitting diode, or may be a micro light emitting diode, which is different from a common light emitting diode, and specifically refers to a micro light emitting diode chip, whose size is far smaller than that of the light emitting diode, and the micro light emitting diode may be a Mini LED. The miniature light-emitting diode has small size, so that the dynamic light emission of the backlight module is controlled to be smaller in area, and the contrast ratio of pictures is improved.

The reflective layer 123 is disposed on a side of the circuit board 121 adjacent to the light source 122, and includes a plurality of openings for exposing the light source 122. In the embodiment of the present invention, the reflective layer 123 may adopt white ink or a reflective sheet, so that the light reflected back to the side of the lamp panel 12 is reflected again toward the diffusion plate 13, thereby improving the service efficiency of the light source.

The diffusion plate 13 is located at one side of the lamp panel 12 far away from the bottom plate 111, and has a certain light mixing distance with the light source 13, and the diffusion plate 13 is used for scattering incident light, so that the light passing through the diffusion plate 13 is more uniform, and has a light homogenizing effect.

The optical film 14 is located on one side of the diffusion plate 13 away from the lamp panel 12, and the optical film 14 may include one or more of a quantum dot layer, a fluorescent layer, a reflective polarizer or a prism sheet, so that the backlight module is suitable for various practical applications.

The wire assemblies 15 are located between the diffusion plate 13 and the lamp panel 12, each wire assembly 15 includes a plurality of wires 150, each wire 150 passes through the opening of the accommodating space and is tensioned on the side plate 111 of the back plate 11, and the wire assemblies 15 cooperate with each other to form a supporting body for supporting the diffusion plate 13.

Compared with the auxiliary frame supporting diffusion plate, referring to fig. 2a and fig. 3, the multi-group wire assemblies 15 provided by the embodiment of the invention only need to pass each wire 150 through the opening of the accommodating space and tension the wires on the side plate 111 of the back plate 11, and a certain auxiliary frame space is not required to be reserved at the edge of the diffusion plate, so that the invention provides the multi-group wire assemblies 15 for supporting the diffusion plate, and the problems of no frame/narrow frame design, small visual angle of the picture, non-uniform transition of the picture and the like which cannot be realized by the auxiliary frame supporting diffusion plate are avoided. In addition, in the embodiment provided by the invention, each wire 150 passes through the opening of the accommodating space to support the diffusion plate, so that the problem that the OD cannot meet the requirement of the display device due to the fact that the diffusion plate is easily sagged due to the influence of gravity due to the fact that the diffusion plate is supported by the auxiliary rubber frame (peripheral support) is avoided.

Compared with the support diffusion plate, referring to fig. 2b and fig. 3, when the diffusion plate is supported by the multi-group wire assembly 15 provided by the embodiment of the invention, the load is uniformly distributed on the wires 150, so that the problems that the support diffusion plate (point support) is supported by the support, the load is concentrated on the points, deformation and vibration abrasion of the diffusion plate are easily caused, and the uniformity of the picture is affected are avoided. In addition, the wire 150 is lighter than a conventional bracket, which is advantageous in reducing the overall weight of the display device.

Therefore, the multi-group wire assemblies 15 provided by the embodiment of the invention support the diffusion 13, so that the effective visual angle of the product can be improved, the borderless/narrow-border design is convenient to realize, and meanwhile, the diffusion plate 13 has a larger and more dispersed supporting surface, and the failure risk of the diffusion plate 13 in mechanical vibration is effectively reduced.

Fig. 4 is a partial top view of a backlight module according to an embodiment of the invention.

Referring to fig. 3 and 4, in the embodiment provided by the present invention, the wires 150 in each set of wire assemblies 15 are parallel to each other, and the spacing distance between each two adjacent wires 150 is equal. Therefore, the wires 150 can be uniformly distributed in each group of wire assemblies 15, and when the diffusion plate 13 is supported, the stress of the diffusion plate 13 in the supporting range of each group of wire assemblies 15 is more uniform, so that the uniformity of the display picture is improved.

In each set of filament assemblies 15 provided by embodiments of the present invention, the spacing distance between each adjacent two filaments 150 is 20-100mm.

Fig. 5 is a second partial top view of the backlight module according to the embodiment of the invention.

Referring to fig. 5, the multi-group wire assembly provided by the embodiment of the present invention includes a first wire assembly 15-1 and a second wire assembly 15-2; wherein the direction of extension of the wires 150 in the first wire assembly 15-1 crosses the direction of extension of the wires 150 in the second wire assembly 15-2. At this time, the backlight module is provided with the wire assemblies in both directions (the extending direction of the wires 150 in the first wire assembly 15-1 and the extending direction of the wires 150 in the second wire assembly 15-2), so that the diffusion plate can be more firmly fixed.

Further, as shown in fig. 5, in the embodiment provided by the present invention, the shape of the bottom plate 111 is rectangular; the direction of extension of the wires 150 in the first wire assembly 15-1 is parallel to the long side of the base plate 111 and the direction of extension of the wires 150 in the second wire assembly 15-2 is parallel to the short side of the base plate 111. Therefore, the length of the wires 150 in the first wire assembly 15-1 fixed on the side plate 112 corresponding to the long side of the bottom plate 111 is ensured to be shortest, and the length of the wires 150 in the second wire assembly 15-2 fixed on the side plate 112 corresponding to the short side of the bottom plate 111 is ensured to be shortest, at this time, on the basis that the diffusion plate 13 is more firmly fixed, shielding of the diffusion plate 13 by the wires 150 is also minimized, and the display effect of the display device is better.

Fig. 6 is a partial top view of a backlight module according to an embodiment of the invention.

Referring to fig. 4 and 6, in the embodiment provided by the present invention, the shape of the bottom plate 111 is rectangular; the direction of extension of the wires 150 in each wire assembly 15 runs along the long side of the base plate 111; alternatively, the wires 150 in each wire assembly 15 extend in a direction parallel to the short sides of the base 111. Therefore, the length of the silk thread 150 in the silk thread assembly 15 fixed on the side plate 112 corresponding to the short side or the long side of the bottom plate 111 is ensured to be shortest, the shielding of the diffusion plate 13 by the silk thread 150 is ensured to be minimum, the problem that the shielding area of the crossing point is easy to appear dark when the silk thread 150 crosses is avoided, and the display effect of the display device is further improved.

Fig. 7 is a schematic partial perspective view of a side plate according to an embodiment of the present invention.

Referring to fig. 4 and 7, the side plate 112 provided in the embodiment of the present invention is provided with groove groups 1120 corresponding to each group of wire assemblies 15 one by one; the groove set 1120 includes a plurality of groove structures 1120-1 corresponding to the wires 150 in the wire assembly 15 one by one, and two ends of the wires 150 are respectively sleeved in the groove structures 1120-1. Therefore, each wire 150 can be ensured to pass through the opening of the accommodating space and be tensioned on the side plate 111 of the back plate 11, the wire assemblies 15 of the plurality of groups are mutually matched to form a supporting body for supporting the diffusion plate 13 assembly, so that the effective visual angle of a product can be improved, the borderless/narrow-border design can be conveniently realized, and meanwhile, the support surface is larger and more dispersed, and the failure risk of the diffusion plate in mechanical vibration is effectively reduced.

Specifically, each groove structure 1120-1 provided in the embodiment of the present invention includes a first groove 1120-11 and a second groove 1120-12, wherein the width of the first groove 1120-11 is greater than the width of the second groove 1120-12, and the wire 150 passes through the second groove 1120-12 from the receiving space and is bent and then passes through the first groove 1120-11.

Fig. 8 is a schematic diagram of a partial cross-sectional structure of a backlight module according to an embodiment of the invention.

Referring to fig. 3 and 8, the backlight module provided in the embodiment of the invention further includes a plastic frame 16, and the plastic frame 16 surrounds and seals around the backlight module, so as to seal the backlight module and prevent light leakage. The frame 16 includes a plurality of protruding structures 160 corresponding to the first grooves 1120-11 one by one, and the protruding structures 160 are disposed on the bottom wall and/or the side wall of the first grooves 1120-11 to fix the portions of the wires 150 penetrating the first grooves to the side plates 112. Therefore, the silk thread 150 can be prevented from being separated from the groove structure 1120-1 in the subsequent use, the stability of the framework is improved, and the overall quality of the display device is improved.

In order to prevent the wire 150 from being worn and cut by the side plate 112, referring to fig. 9, the backlight module provided by the embodiment of the invention further includes a sleeve 17, and both ends of the wire 150 are fixed in the groove structure 1120-1 through the sleeve 17, so that the wire 150 can be effectively prevented from being worn and cut by the side plate 112, and the service life of the wire 150 is prolonged. The sleeve 17 and the wire 150 provided by the embodiment of the invention can be manufactured by adopting a one-step forming manufacturing method of a stamping die, and the manufacturing process is simple.

According to the embodiment of the invention, the front projection of the sleeve 17 on the bottom plate and the front projection of the diffusion plate on the bottom plate are not overlapped, so that the sleeve 17 can be prevented from shielding the diffusion plate, and the phenomenon of shadow of a display picture is avoided.

In the embodiment provided in the present invention, the sleeve 17 may be made of wear-resistant materials such as aluminum, iron, aluminum alloy, iron alloy, polystyrene material PS, polyamide PA plastic or acrylonitrile-butadiene-styrene copolymer ABS, or other wear-resistant materials, which are not limited herein.

The wire 150 provided by embodiments of the present invention has sufficient rigidity, tensile strength, and creep resistance. The wire 150 has enough rigidity to maintain the stability of the OD value when bearing the self weight of the diffusion plate 13 and the acceleration generated by vibration; the wire 150 has enough tensile strength, so that breakage in the service life process can be avoided, and the service life is prolonged; the wire 150 has sufficient wear resistance to prevent wear and breakage due to the sharp edges left by the slotting of the side walls 112; the filament 150 has enough creep resistance to ensure that the filament does not creep and relax over time and maintain the stability of the OD value due to the long-term temperature or humidity applied within the display module. Finally, the wire diameter of the wire 150 cannot be too large, preventing the shadow phenomenon of the display screen.

Specifically, the material used for the wire 150 provided by the embodiment of the present invention may be steel or tungsten; the wire 150 has a circular cross section in a direction perpendicular to the wire 150. In order to prevent the phenomenon that the display screen with too large wire diameter of the wire 150 is shaded, the wire diameter of the wire 150 provided by the embodiment of the invention is 0.1-0.4mm.

In other embodiments provided by the present invention, the material used for the wire 150 may also be polymethyl methacrylate PMMA, polycarbonate PC or methyl methacrylate-styrene polymer MS. Because the material has light transmittance, in order to prevent light from condensing or shading when the light finally reaches the diffusion plate 13 through air-wire-air, the wire 150 provided by the embodiment of the invention can adopt a non-circular section or a hollow section (i.e. the wire 150 is circular along the section perpendicular to the wire 150), and the light can finally reach the diffusion plate 13 through air-wire-air by adopting the non-circular section or the hollow section, so that the light is scattered, the phenomenon of condensing and shading of the light is effectively prevented, and the display effect of the display device is improved.

The shape of the cross section of the filament 150 along the direction perpendicular to the filament 150 according to the embodiment of the present invention may also be determined according to different requirements of different display devices, which is not limited herein.

Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises a display panel and the backlight module provided by any embodiment. Because the principle of the display device for solving the problems is similar to that of the backlight module, the implementation of the display device can be referred to the implementation of the backlight module, and the repeated parts are not repeated.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A backlight module, comprising:

the lamp panel is arranged on the bottom plate;

the wire assemblies are positioned between the diffusion plate and the lamp panel, each wire assembly comprises a plurality of wires, each wire penetrates through the opening of the containing space and is tensioned on the side plate of the back plate, the wire assemblies are matched with each other to form a supporting body for supporting the diffusion plate assembly, wires in each wire assembly are parallel to each other, and the interval distance between every two adjacent wires is equal; the side plates are provided with groove groups which are in one-to-one correspondence with the wire assemblies of each group; the groove group comprises a plurality of groove structures which are in one-to-one correspondence with silk threads in the silk thread assembly, two ends of the silk threads are respectively sleeved in the groove structures, two ends of the silk threads are fixed in the groove structures through sleeves, and the orthographic projection of the sleeves on the bottom plate and the orthographic projection of the diffusion plate on the bottom plate are not overlapped; each groove structure comprises a first groove and a second groove, the width of the first groove is larger than that of the second groove, and the silk thread penetrates out of the accommodating space through the second groove and is arranged in the first groove after being bent;

2. A backlight module according to claim 1, wherein the spacing distance between each adjacent two wires is 20-100mm.

3. The backlight module according to claim 1, wherein the plurality of sets of wire assemblies includes a first wire assembly and a second wire assembly; wherein the direction of extension of the filaments in the first filament assembly crosses the direction of extension of the filaments in the second filament assembly.

4. A backlight module according to claim 3, wherein the bottom plate is rectangular in shape; the extending direction of the wires in the first wire assembly is parallel to the long side of the bottom plate, and the extending direction of the wires in the second wire assembly is parallel to the short side of the bottom plate.

5. The backlight module according to claim 1, wherein the bottom plate has a rectangular shape, and the extending direction of the wires in each wire assembly is parallel to the long side of the bottom plate; alternatively, the wires in each wire assembly extend in a direction parallel to the short sides of the base plate.

6. The backlight module according to any one of claims 1 to 5, wherein the wire is made of steel or tungsten; the cross section of the silk thread along the direction perpendicular to the silk thread is circular.

7. A backlight module according to any one of claims 1 to 5, wherein the filaments are made of one of polymethyl methacrylate, polycarbonate or methyl methacrylate-styrene copolymer; the yarn is circular in section along the direction perpendicular to the yarn.

8. A display device comprising a display panel and a backlight module according to any one of claims 1-7.