CN115016180B

CN115016180B - Backboard assembly, backlight module and display device

Info

Publication number: CN115016180B
Application number: CN202210785113.1A
Authority: CN
Inventors: 张梅; 罗旭刚; 曹太鑫; 康报虹
Original assignee: HKC Co Ltd; Beihai HKC Optoelectronics Technology Co Ltd
Current assignee: HKC Co Ltd; Beihai HKC Optoelectronics Technology Co Ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2023-11-17
Anticipated expiration: 2042-07-07
Also published as: CN115016180A

Abstract

The application provides a backboard assembly, a backlight module and a display device, wherein the backboard assembly comprises a backboard and a front frame, the backboard comprises a board main body and a surrounding edge, and the surrounding edge is formed by bending one side edge of the board main body; the front frame is detachably connected with the surrounding edge, and at least part of the front frame is arranged opposite to the plate main body so as to form a limiting space with the backboard. The technical scheme of the application can improve the assembly efficiency of the backlight module and the display device.

Description

Backboard assembly, backlight module and display device

Technical Field

The application relates to the technical field of display devices, in particular to a back plate assembly, a backlight module and a display device.

Background

The liquid crystal display (LCD, liquid Crystal Display) mainly includes a liquid crystal panel and a backlight module. In traditional backlight unit, the ground side of backplate sets up U-shaped bending structure and forms U type groove, and makes lamp strip and partial light guide plate holding in U type inslot, in some backlight unit in addition, still need paste at the inboard surface in U type groove and establish reflecting structure, avoids backlight unit and display device to appear the edge light leak phenomenon, influences whole display effect. The backlight module structure causes trouble in assembling the backlight module, is difficult to be applied to automatic assembling and affects the assembling efficiency.

Disclosure of Invention

The application mainly aims to provide a back plate assembly, a backlight module and a display device, and aims to improve the assembly efficiency of the backlight module and the display device.

In order to achieve the above object, the present application provides a back plate assembly, comprising:

the backboard comprises a board main body and a surrounding edge, wherein the surrounding edge is formed by bending one side edge of the board main body; and

the front frame is detachably connected with the surrounding edge, and at least part of the front frame is arranged opposite to the plate main body so as to form a limiting space with the backboard.

In one embodiment of the back plate assembly of the present application, the front frame comprises:

the supporting part extends along the length direction of the surrounding edge and is abutted against the inner side surfaces of the plate main body and the surrounding edge; and

the suspension part is convexly arranged on one side of the supporting part, which is away from the surrounding edge, and is opposite to the backboard;

wherein, the surrounding edge and at least one of the unsettled portion with the supporting part can dismantle the connection.

In an embodiment of the back plate assembly of the present application, a side of the supporting portion facing the surrounding edge is convexly provided with a buckle, the surrounding edge is provided with a card interface, and the buckle is clamped at the card interface.

In an embodiment of the back plate assembly of the present application, the card interface includes an access channel and a limiting channel connected to each other, the access channel extends from a side of the peripheral edge far from the plate main body to the plate main body, and the limiting channel extends from a side wall of the access channel along a length direction of the peripheral edge;

the buckle is located in the limiting channel, the backboard component further comprises a stop piece, and the stop piece is at least partially arranged in the access channel and used for stopping the buckle from falling out of the limiting channel.

In an embodiment of the back plate assembly of the present application, the stop member is a patch structure, and the patch structure is at least partially attached to a surface of the front frame exposed to the access channel.

In an embodiment of the back plate assembly of the present application, the patch structure includes a stop section and a bending section that are connected, and the stop section is attached to a surface of the front frame exposed to the access channel;

the surface of the front frame, which is away from the plate main body, is provided with a limiting groove, and the bending section is arranged in the limiting groove.

In an embodiment of the back plate assembly of the present application, at least a portion of the suspending portion is used for shielding the limiting light guide plate, and the portion of the suspending portion is made of transparent material.

In an embodiment of the back plate assembly of the present application, a surface of the front frame facing away from the plate main body is concavely provided with a limiting step for supporting the display panel.

The application also provides a backlight module, which comprises a lamp strip, a light guide plate, an optical film and the back plate assembly, wherein the back plate assembly comprises a back plate and a front frame, the back plate comprises a plate main body and a surrounding edge, the surrounding edge is formed by bending from one side edge of the plate main body, the front frame is detachably connected with the surrounding edge, and the front frame is at least partially arranged opposite to the plate main body so as to form a limiting space by surrounding with the back plate;

the light bar is attached to the plate main body of the back plate and is arranged in the limiting space, the light guide plate is arranged on the surface of the plate main body and is partially positioned in the limiting space, and the optical membrane is arranged on the plate surface of the light guide plate.

The application also provides a display device which comprises a display panel and the backlight module, wherein the display panel is arranged on the light emitting side of the backlight module.

According to the technical scheme, the backboard component is arranged into a combined structure of the backboard and the front frame, the front frame is detachably connected with the surrounding edge of the backboard, and at least part of the front frame and the backboard are arranged opposite to the board main body, so that a limiting space can be formed between the front frame and the backboard on the ground side of the backboard; when the back plate assembly is applied to the backlight module and the limiting device, the lamp strip, the light guide plate, the optical film and the like can be fixed on the back plate vertically and downwards in sequence from top to bottom, and then the front frame is fixed; the back plate assembly has the advantages that the problem that the lamp strip, the light guide plate, the optical membrane and the like are inconvenient to assemble due to the fact that the integrally formed U-shaped bending structure is arranged on the ground side of the back plate in the traditional mode is avoided, and the convenience in mounting the lamp strip, the light guide plate and the optical membrane is improved, and the assembly efficiency is improved; in addition, the backlight module and the display device can be assembled by using automatic equipment, so that the assembly efficiency of the backlight module and the display device is further improved.

Drawings

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

FIG. 1 is a block diagram of a first embodiment of a display device according to the present application;

FIG. 2 is a partial cross-sectional view of the display device of FIG. 1;

FIG. 3 is a block diagram of a first embodiment of a back plate assembly according to the present application;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is an exploded view of the back plate assembly of FIG. 3;

fig. 6 is an enlarged view at B in fig. 5.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1000	Display device	123	Buckle
100	Backlight module	124	Limiting groove
				10	Backboard assembly	125	Spacing step
11	Backboard	13	Stop piece
				111	Plate body	131	Stop section
112	Surrounding edge	132	Bending section
				113	Card interface	20	Lamp strip
113a	Access passage	30	Light guide plate
				113b	Limiting channel	40	Optical film
12	Front frame	50	Reflection sheet
				121	Support part	200	Display panel
122	Suspended part

The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

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

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

The application provides a back plate assembly 10, a backlight module 100 and a display device 1000, which can improve the assembly efficiency of the backlight module 100 and the display device 1000.

Referring to fig. 2 to 6, in some embodiments of the back plate assembly 10 of the present application, the back plate assembly 10 includes:

a back plate 11, wherein the back plate 11 comprises a plate main body 111 and a surrounding edge 112, and the surrounding edge 112 is formed by bending from one side edge of the plate main body 111; and

the front frame 12 is detachably connected with the surrounding edge 112, and the front frame 12 is at least partially disposed opposite to the plate main body 111 to form a limiting space with the back plate 11.

The back plate assembly 10 provided by the application is applied to the backlight module 100 of the display device 1000, and when the display device 1000 displays a picture, the upper part of the picture is the top side of the display device 1000 when the picture is seen in front, and the lower part of the picture is the ground side of the display device 1000, so that the directions of the top side and the ground side of the backlight module 100 and the back plate assembly 10 are defined correspondingly. The common backlight module 100 adopts a combined structure of the back plate 11 and the rubber frame, the back plate 11 and the rubber frame enclose to form an installation space, and can be used for installing structures such as the light bar 20, the light guide plate 30, the optical film 40 and the like, and in order to strengthen the structural stability of the display device 1000, the back plate 11 is provided with a U-shaped bending structure on the ground side to form a U-shaped groove, so that the light entering sides of the light bar 20 and the light guide plate 30 are required to be positioned in the U-shaped groove, and in addition, in some embodiments, a light reflecting structure is required to be stuck on the inner side surface of the U-shaped groove, so that the phenomenon of edge light leakage of the backlight module 100 and the display device 1000 is avoided, and the integral display effect is influenced. However, the assembly of the backlight module 100 is troublesome and difficult to be applied to automated assembly, which affects the assembly efficiency.

The back plate assembly 10 provided by the application comprises a back plate 11 and a front frame 12 which are detachably connected, wherein the front frame 12 is arranged on the ground side of the back plate 11, in particular, the back plate 11 comprises a plate main body 111 and a surrounding edge 112, the surrounding edge 112 is formed by bending from the ground side of the plate main body 111, the front frame 12 and the surrounding edge 112 are detachably connected and are at least partially arranged opposite to the plate main body 111, and the arrangement is such that the front frame 12 and the back plate 11 are combined on the ground side of the back plate 11 to form a U-shaped structure so as to form a limit space, at the moment, the structures such as a lamp strip 20, a light guide plate 30 and the like are all attached on the plate main body 111, and the lamp strip 20 and part of the light guide plate 30 are positioned in the limit space; in this arrangement, since the back plate 11 and the front frame 12 in the back plate assembly 10 are detachable, when the backlight module 100 is assembled, the structures such as the light bar 20, the reflective sheet 50, the light guide plate 30, the optical film 40 and the like can be firstly installed on the plate main body 111 from the direction perpendicular to the plate main body 111, and then the front frame 12 is assembled, so that the light entering sides of the light bar 20 and the light guide plate 30 do not need to be plugged into the U-shaped groove from the side part of the U-shaped groove as in the conventional back plate 11 structure, the complexity of installing the light bar 20 and the light guide plate 30 is reduced, and the assembly efficiency of the backlight module 100 can be improved; meanwhile, since the installation of the light bar 20, the light guide plate 30 and the front frame 12 is only the movement transformation in the height direction and the horizontal direction, the automatic assembly equipment can be used to assemble the backlight module 100 and the display device 1000, and the assembly efficiency of the backlight module 100 and the display device 1000 is further improved. At this time, since the light bar 20 is mounted on the board main body 111, for the side-entry backlight module 100, the light incident surface of the light guide plate 30 is on the side surface thereof, so that the light emitting units on the light bar 20 can be arranged towards the light guide plate 30, or a scattering light source can be adopted, and only the light guide plate 30 can receive the light emitted by the light bar 20.

In addition, when the back plate assembly 10 of the present application is applied in the backlight module 100, the front frame 12 can be extended above the optical film 40, and the upper sidewall of the U-shaped bending structure and the optical film 40 are not required to be arranged at intervals in the horizontal direction of the back plate 11 as in the conventional structure, and at this time, a reflective structure is not required to be arranged on the inner side surface of the front frame 12, thereby further improving the convenience of assembly. Of course, if the light reflecting structure is still required to be disposed in the backlight module 100, the light reflecting structure and the front frame 12 can be preassembled outside the automatic assembly line, and then the automatic assembly is performed, so that the assembly difficulty of the light reflecting structure is reduced, and the assembly efficiency of the backlight module 100 is improved.

In this embodiment, the back plate 11 may have a surrounding structure on the top side and the left and right sides, but neither the top side nor the left and right sides is provided with a U-shaped bending structure, so as to avoid affecting the installation of the light guide plate 30 and other structures.

It should be further noted that, in this embodiment, the backlight module 100 may further include a mounting frame, at most, the mounting frame is provided with structural shielding on the top and left sides, and is connected with the back plate 11 after the light bar 20, the light guide plate 30, the optical film 40 and other structures, so that the light guide plate 30 and other sides of the optical film 40 can be covered, and the overall structural stability is improved.

Therefore, it can be understood that in the technical solution of the present application, the back panel assembly 10 is configured as a combined structure of the back panel 11 and the front frame 12, the front frame 12 is detachably connected with the peripheral edge 112 of the back panel 11, and is at least partially disposed opposite to the panel main body 111, so that the front frame 12 and the back panel 11 form a limiting space on the ground side of the back panel 11; so arranged, when the back plate assembly 10 is applied to the backlight module 100 and the limiting device, the light bar 20, the light guide plate 30, the optical film 40 and the like can be sequentially fixed on the back plate 11 from top to bottom vertically, and then the front frame 12 is fixed; therefore, the problem that the lamp strip 20, the light guide plate 30, the optical membrane 40 and the like are inconvenient to assemble due to the integrally formed U-shaped bending structure arranged on the ground side of the backboard 11 in the traditional mode is avoided, and the backboard assembly 10 provided by the application improves the convenience in mounting the lamp strip 20, the light guide plate 30 and the optical membrane 40 and improves the assembly efficiency; in addition, the backlight module 100 and the display device 1000 may be assembled by using an automated apparatus, thereby further improving the assembly efficiency of the backlight module 100 and the display device 1000.

In some embodiments, when the back panel assembly 10 of the present application is applied to the backlight module 100 and the display device 1000, the front frame 12 is required to support and fix the display panel 200, and at this time, the distance between the light guide plate 30 and the display panel 200 can be specifically adjusted by replacing the front frame 12 with a different height, so that the distance between the light guide plate 30 and the display panel 200 can be adjusted according to the light field requirement.

Referring to fig. 2 and 4, in some embodiments of the back panel assembly 10 of the present application, the front frame 12 is disposed inside the peripheral edge 112.

In this embodiment, the front frame 12 is disposed on the inner side of the surrounding edge 112, so that the surrounding edge 112 covers the shielding front frame 12, which protects the front frame 12, and when the display device 1000 and the backlight module 100 are in a hanging state, the surrounding edge 112 can bear the front frame 12, so as to improve the stability of the mounting structure of the front frame 12 and prevent the front frame 12 from falling off.

Referring to fig. 2, in some embodiments of the back plate assembly 10 of the present application, the front frame 12 includes:

a support portion 121, wherein the support portion 121 extends along the longitudinal direction of the peripheral edge 112 and abuts against the plate main body 111 and the inner side surface of the peripheral edge 112; and

the suspension part 122 is convexly arranged on one side of the supporting part 121, which is away from the surrounding edge 112, and is opposite to the back plate 11;

wherein at least one of the surrounding edge 112 and the suspending portion 122 is detachably connected to the supporting portion 121.

In this embodiment, the front frame 12 includes a supporting portion 121 and a suspending portion 122 connected, the supporting portion 121 and the suspending portion 122 extend along the length direction of the surrounding edge 112, and the supporting portion 121 abuts against the inner surface of the surrounding edge 112 and the board surface of the board main body 111, so that the stability of the relative position between the front frame 12 and the back plate 11 can be improved, the suspending portion 122 is disposed on one side of the supporting portion 121 away from the surrounding edge 112 and opposite to the back plate 11, so as to form a spacing space with the supporting portion 121 and the board main body 111, and at this time, the light incident side of the light bar 20 and the light guide plate 30 is disposed between the suspending portion 122 and the board main body 111.

Further, the supporting portion 121 is detachably connected with the surrounding edge 112, and/or the supporting portion 121 is detachably connected with the suspending portion 122, so that when the supporting portion 121 is detachably connected with the surrounding edge 112, the light guide plate 30, the light bar 20 and other devices can be conveniently disassembled by removing the connection relationship between the supporting portion 121 and the surrounding edge 112; when the supporting part 121 is detachably connected with the suspending part 122, the suspending part 122 can be detached, so that the light guide plate 30, the light bar 20 and other devices can be conveniently detached; and when the supporting portion 121 and the surrounding edge 112 and the supporting portion 121 and the suspending portion 122 are detachably connected, a more convenient operation mode can be selected according to the user's needs, thereby improving the convenience of use.

In addition, it can be understood that, when the back panel assembly 10 of the present application is applied to the backlight module 100 and the display device 1000, the suspending portion 122 of the front frame 12 is required to support and fix the display panel 200, such that the display panel 200 is disposed opposite to the light guide plate 30. In this embodiment, when the supporting portion 121 is detachably connected with the surrounding edge 112, the front frame 12 with different heights can be selected to adjust the distance between the display panel 200 and the light guide plate 30 by replacing the whole front frame 12, or when the supporting portion 121 is detachably connected with the suspending portion 122, the distance between the display panel 200 and the light guide plate 30 can be adjusted by replacing the supporting portion 121 with different heights, so as to meet different light field requirements, and improve the applicability of the back plate assembly 10 and the backlight module 100.

Referring to fig. 4 to 6, in some embodiments of the back-plate assembly 10 of the present application, a buckle 123 is protruding from a side of the supporting portion 121 facing the peripheral edge 112, the peripheral edge 112 is provided with a card interface 113, and the buckle 123 is clamped to the card interface 113.

In this embodiment, the supporting portion 121 is provided with a buckle 123 protruding toward one side of the surrounding edge 112, the surrounding edge 112 is provided with a clamping interface 113, the buckle 123 is clamped in the clamping interface 113 to enable the front frame 12 to be detachably connected with the surrounding edge 112, the buckle 123 and the clamping interface 113 have a matching structure, namely a stronger connection strength, and no additional tools or fixing parts are needed to be connected as in the structure of bolting and the like, so that the assembly convenience is improved. Additionally, in some embodiments, a plurality of pairs of snaps 123 and snap interfaces 113 are provided between the front bezel 12 and the peripheral edge 112 to increase the strength of the connection between the front bezel 12 and the peripheral edge 112.

Referring to fig. 6, in some embodiments of the back plate assembly 10 of the present application, the card interface 113 includes an access channel 113a and a limiting channel 113b connected to each other, the access channel 113a extends from a side of the peripheral edge 112 away from the plate main body 111 toward the plate main body 111, and the limiting channel 113b extends from a side wall of the access channel 113a along a length direction of the peripheral edge 112;

the buckle 123 is located in the limiting channel 113 b.

In this embodiment, the card interface 113 includes an access channel 113a and a limiting channel 113b, where the access channel 113a and the limiting channel 113b are connected, and are disposed at an included angle, the access channel 113a extends from a side of the surrounding edge 112 far away from the plate main body 111 to one side of the plate main body 111, and the limiting channel 113b extends from a side wall of the access channel 113a along a length direction of the surrounding edge 112, at this time, when the front frame 12 is connected with the surrounding edge 112, only the front frame 12 needs to enter the access channel 113a from a direction perpendicular to the plate main body 111, and then translate along a horizontal direction into the limiting channel 113b, and since the limiting channel 113b has no opening in a direction perpendicular to the plate main body 111, the front frame 12 can be limited to avoid the front frame 12 from falling out from a direction perpendicular to the plate main body 111, thereby improving the overall connection strength and structural stability. Meanwhile, in the case where the plate main body 111 is horizontally placed, the mounting of the front frame 12 at this time is also only displacement in the height direction and the horizontal direction, and also can be accomplished by using an automated apparatus to improve the assembly efficiency.

Referring to fig. 2 to 4, in some embodiments of the back plate assembly 10 of the present application, the back plate assembly 10 further includes a stopper 13, where the stopper 13 is at least partially disposed in the access channel 113a, and is used for stopping the buckle 123 from being separated from the limiting channel 113 b.

In this embodiment, the back plate assembly 10 further includes a stop member 13, where the stop member 13 is at least partially disposed in the access channel 113a, so as to prevent the buckle 123 from being disengaged from the limiting channel 113b, and further improve the connection stability between the front frame 12 and the surrounding edge 112. The stopper 13 may be a pin, a bolt, or the like, or may be a patch structure in the following embodiment, and only needs to seal the connection position between the limiting channel 113b and the access channel 113a to avoid the disengagement of the buckle 123, which is not limited herein. Meanwhile, the stopper 13 may be connected to the peripheral edge 112, or may be connected to the front frame 12, or may simultaneously connect the peripheral edge 112 and the front frame 12 to further improve the connection strength between the front frame 12 and the back plate 11.

Referring to fig. 2 and 4, in some embodiments of the back plate assembly 10 of the present application, the stopper 13 is a patch structure, and the patch structure is at least partially attached to a surface of the front frame 12 exposed to the access duct 113 a.

In this embodiment, the stopper 13 is a patch structure, and only the cable attached to the front frame 12 needs to be attached to the surface of the access channel 113a, the stopper 13 is fixed by adopting an attaching manner, and the stopper 13 is not required to be detached from or attached to other tools, such as a screwdriver, so as to facilitate maintenance of the subsequent display device 1000 or backlight. Meanwhile, the stopper 13 adopts a hard structure, so that the structural strength of the patch structure can be improved, the patch structure is not easy to deform, and the stopper and the limiting function are better achieved.

Referring to fig. 4 and 6, in some embodiments of the back plate assembly 10 of the present application, the patch structure includes a stop section 131 and a bending section 132 connected to each other, the stop section 131 is attached to a surface of the front frame 12 exposed to the access duct 113a, and the bending section 132 is attached to a surface of the front frame 12 facing away from the plate main body 111.

In this embodiment, the paster structure includes the backstop section 131 and the section of buckling 132 that are connected, the backstop section 131 pastes the surface of exposing in business turn over passageway 113a of locating preceding frame 12, the section of buckling 132 is the contained angle setting with backstop section 131 to paste the surface of deviating from board main part 111 of locating preceding frame 12, so set up, can improve the area of connection between paster structure and the preceding frame 12, improve the joint strength of paster structure and preceding frame 12, avoid paster structure to drop from preceding frame 12, thereby can further avoid buckle 123 to deviate from spacing passageway 113b, improve the connection stability and the overall structure stability between preceding frame 12 and backplate 11.

Referring to fig. 3 to 6, in some embodiments of the back plate assembly 10 of the present application, a limiting groove 124 is formed on a surface of the front frame 12 facing away from the plate main body 111, and the bending section 132 is disposed in the limiting groove 124.

In this embodiment, the spacing groove 124 has been seted up on the surface that the front bezel 12 deviates from board main part 111, bending section 132 sets up in spacing groove 124, so set up, can make the paster structure receive the spacing effect of business turn over passageway 113a and spacing groove 124 simultaneously, and then guarantee the stability of relative position between front bezel 12 and backplate 11, setting up of spacing groove 124 simultaneously, can make bending section 132 and front bezel 12 surfacing, avoid paster structure protrusion front bezel 12, reduce the paster structure and receive the foreign object scratch and the risk that drops from front bezel 12.

In some embodiments of the back plate assembly 10 of the present application, at least a portion of the suspending portion 122 is used for shielding the spacing light guide plate 30, and the portion of the suspending portion 122 is made of transparent material.

When the back plate assembly 10 of the present application is applied to the backlight module 100 and the display device 1000, a limiting space is defined between the front frame 12 and the back plate 11, and a portion of the light guide plate 30 is located in the limiting space; meanwhile, the suspending portion 122 of the front frame 12 is required to be used for carrying and fixing the display panel 200, if the width of the front frame 12 is increased, the contact area with the display panel 200 can be increased, and the display panel 200 can be better supported. However, this structure also causes the suspending portion 122 to block more light guide plates 30, which affects the incidence of light on the display panel 200. In this embodiment, the portion of the suspending portion 122 far from the surrounding edge 112, i.e. the portion opposite to the light guide plate 30, is made of transparent material, and may be made of transparent hard plastic, such as polyphenylene sulfide (PPS), or may be made of transparent glass fiber material, so as to play a role in reinforcing and supporting the display panel 200, and also avoid the front frame 12 from shielding more light guide plates 30, so as to avoid affecting light from entering the display panel 200, and increase the effective display area of the display device 1000.

Referring to fig. 2 and 4, in some embodiments of the back plate assembly 10 of the present application, a limiting step 125 is recessed on a surface of the front frame 12 facing away from the plate main body 111, for supporting the display panel 200.

When the back panel assembly 10 of the present application is applied to the backlight module 100 and the display device 1000, the front frame 12 needs to be used for carrying and fixing the display panel 200, in this embodiment, the surface of the front frame 12 facing away from the panel main body 111 is concavely provided with the limiting step 125, so that when the display panel 200 is supported on the front frame 12, a part of the display panel 200 is located in the limiting step 125, and can limit the display panel 200, thereby improving the position stability of the display panel 200 in the display device 1000 and improving the overall structural stability of the display device 1000.

The application also provides a backlight module 100, the backlight module 100 comprises a light bar 20, a light guide plate 30, an optical film 40 and a back plate assembly 10 according to any of the foregoing embodiments, the back plate assembly 10 comprises a back plate 11 and a front frame 12, the back plate 11 comprises a plate main body 111 and a surrounding edge 112, the surrounding edge 112 is formed by bending from one side edge of the plate main body 111, the front frame 12 is detachably connected with the surrounding edge 112, and at least part of the front frame 12 is arranged opposite to the plate main body 111 to form a limiting space with the back plate 11;

the light bar 20 is attached to the plate main body 111 of the back plate 11 and is disposed in the limiting space, the light guide plate 30 is disposed on the surface of the plate main body 111 and is partially disposed in the limiting space, and the optical film 40 is disposed on the plate surface of the light guide plate 30.

In this embodiment, the backlight module 100 includes the light bar 20, the light guide plate 30, the optical film 40 and the back plate assembly 10, wherein the back plate 11 includes a plate main body 111 and a surrounding edge 112, the surrounding edge 112 is formed by bending from the side edge of the ground side of the plate main body 111, the front frame 12 and the surrounding edge 112 are detachably connected, and at least part of the front frame 12 and the surrounding edge 112 are opposite to the plate main body 111, that is, the front frame 12 and the back plate 11 are combined to form a U-shaped structure on the side edge of the back plate 11 to form a limit space, at this time, the structures such as the light bar 20 and the light guide plate 30 are all attached to the plate main body 111, and the light bar 20 and part of the light guide plate 30 are located in the limit space; in this arrangement, since the back plate 11 and the front frame 12 in the back plate assembly 10 are detachable, when the backlight module 100 is assembled, the structures such as the light bar 20, the light guide plate 30, the optical film 40 and the like can be firstly installed on the plate main body 111 from the direction perpendicular to the plate main body 111, and then the front frame 12 is assembled, the light entering sides of the light bar 20 and the light guide plate 30 do not need to be plugged into the U-shaped groove from the side part of the U-shaped groove as in the conventional back plate 11 structure, the complexity of installing the light bar 20 and the light guide plate 30 is reduced, and the assembly efficiency of the backlight module 100 can be improved; meanwhile, since the installation of the light bar 20, the light guide plate 30 and the front frame 12 is only the movement transformation in the height direction and the horizontal direction, the automatic assembly equipment can be used to assemble the backlight module 100 and the display device 1000, and the assembly efficiency of the backlight module 100 and the display device 1000 is further improved. At this time, since the light bar 20 is mounted on the board main body 111, for the side-entry backlight module 100, the light incident surface of the light guide plate 30 is on the side surface thereof, so that the light emitting units on the light bar 20 can be arranged towards the light guide plate 30, or a scattering light source can be adopted, and only the light guide plate 30 can receive the light emitted by the light bar 20. In some embodiments, the optical module further includes a reflective sheet 50 disposed on the back side of the light guide plate 30, so that all light can be emitted from the light emitting surface of the light guide plate 30, and the light can be emitted to the display panel 200 through the optical film 40, thereby improving the light utilization rate. The optical film 40 may be provided in a plurality of forms, for example, an antireflection film, a filter film, an optical protection film, a polarizing film, a spectroscopic film, a phase film, and the like, and the corresponding optical film 40 may be provided according to the actual situation.

In some embodiments, the front frame 12 may extend above the optical film 40, without arranging the upper side wall of the U-shaped bending structure and the optical film 40 at intervals in the horizontal direction of the back plate 11 as in the conventional structure, and at this time, a reflective structure may not be required to be arranged on the inner side surface of the front frame 12, so as to further improve the convenience of assembly. Of course, if the light reflecting structure is still required to be disposed in the backlight module 100, the light reflecting structure and the front frame 12 can be preassembled outside the automatic assembly line, and then the automatic assembly is performed, so that the assembly difficulty of the light reflecting structure is reduced, and the assembly efficiency of the backlight module 100 is improved.

In some embodiments, when the backlight module 100 of the present application is applied to the display device 1000, the front frame 12 of the back panel assembly 10 is required to support and fix the display panel 200, and at this time, the distance between the light guide plate 30 and the display panel 200 can be specifically adjusted by replacing the front frame 12 with a different height, so that the distance between the light guide plate 30 and the display panel 200 can be adjusted according to the light field requirement.

Since the backlight module 100 according to the present application employs the technical solutions of all the foregoing embodiments, at least the technical solutions have all the beneficial effects of the foregoing technical solutions, which are not described herein in detail.

In some embodiments of the backlight module 100 of the present application, a portion of the optical film 40 is located in the limiting space.

In this embodiment, the front frame 12 may extend above the optical film 40, and the upper sidewall of the U-shaped bending structure and the optical film 40 are not required to be disposed at intervals in the horizontal direction of the back plate 11 as in the conventional structure, and at this time, a reflective structure is not required to be disposed on the inner side surface of the front frame 12, so as to further improve the convenience of assembly.

Referring to fig. 1 and 2, the present application further provides a display device 1000, where the display device 1000 includes a display panel 200 and the backlight module 100 as described above, and the display panel 200 is disposed on the light emitting side of the backlight module 100. Since the display device 1000 according to the present application employs the technical solutions of all the foregoing embodiments, at least the technical solutions have all the beneficial effects of the foregoing technical solutions, which are not described herein in detail.

In some embodiments, the distance between the light guide plate 30 and the display panel 200 may be specifically adjusted by replacing the front frame 12 with a different height, so that the distance between the light guide plate 30 and the display panel 200 may be adjusted according to the light field requirement.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the application, and all equivalent structural changes made by the description of the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the application.

Claims

1. A back plate assembly, comprising:

the front frame is detachably connected with the surrounding edge and comprises a supporting part and a suspending part, the supporting part extends along the length direction of the surrounding edge and is abutted to the inner side surfaces of the plate main body and the surrounding edge, the suspending part is arranged on one side, deviating from the surrounding edge, of the supporting part and is opposite to the backboard, so that a limiting space is formed by surrounding the backboard, and at least one of the surrounding edge and the suspending part is detachably connected with the supporting part;

the side of the supporting part, which faces the surrounding edge, is convexly provided with a buckle, the surrounding edge is provided with a clamping interface, the clamping interface comprises an access channel and a limiting channel which are connected, the access channel extends from the side edge, far away from the plate main body, of the surrounding edge to the plate main body, and the limiting channel extends from the side wall of the access channel along the length direction of the surrounding edge;

the buckle is located in the limiting channel, the back plate assembly further comprises a stop piece, the stop piece is of a patch structure, and the patch structure is at least partially attached to the surface of the front frame, exposed to the inlet and outlet channels, and used for stopping the buckle from falling out of the limiting channel.

2. The back plate assembly of claim 1, wherein the patch structure comprises a stop section and a bending section connected to each other, the stop section being attached to a surface of the front frame exposed to the access duct;

3. The back plate assembly of claim 1, wherein at least a portion of the suspended portion is configured to block the spacing light guide plate, and the portion of the suspended portion is made of a transparent material.

4. A backplate assembly as claimed in any one of claims 1 to 3 wherein the surface of the front frame facing away from the plate body is recessed with a stop step for supporting a display panel.

5. A backlight module, characterized in that the backlight module comprises a light bar, a light guide plate, an optical film and the backboard assembly according to any one of claims 1 to 4, wherein the light bar is attached to the board main body of the backboard and is arranged in the limit space, the light guide plate is arranged on the surface of the board main body and is partially positioned in the limit space, and the optical film is arranged on the board surface of the light guide plate.

6. A display device, comprising a display panel and the backlight module of claim 5, wherein the display panel is disposed on a light emitting side of the backlight module.