CN115016180A

CN115016180A - Back plate assembly, backlight module and display device

Info

Publication number: CN115016180A
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: 2022-09-06
Anticipated expiration: 2042-07-07
Also published as: CN115016180B

Abstract

The application provides a back plate assembly, a backlight module and a display device, 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, and the surrounding edge is formed by bending one side edge of the plate 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 back plate in a surrounding mode. The technical scheme of this application can improve backlight unit and display device's packaging efficiency.

Description

Back plate 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

A Liquid Crystal Display (LCD) 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 reflection of light structure, avoids backlight unit and display device to appear marginal light leak phenomenon, influences whole display effect. The backlight module structure causes that the assembly of the backlight module is troublesome and difficult to be applied to automatic assembly, thereby affecting the assembly efficiency.

Disclosure of Invention

The main objective of the present application is to provide a back plate assembly, a backlight module and a display device, which aim to improve the assembly efficiency of the backlight module and the display device.

To achieve the above object, the present application provides a back plate assembly, including:

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, the front frame with the surrounding edge can be dismantled and be connected, just the front frame at least part with the board main part sets up relatively in order to with the backplate encloses to close forms spacing space.

In an embodiment of the backplane assembly of the present application, the front frame includes:

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

the hanging part is convexly arranged on one side of the supporting part, which is far away from the surrounding edge, and is opposite to the back plate;

wherein at least one of the surrounding edge and the suspended part is detachably connected with the supporting part.

In an embodiment of this application backplate subassembly, the orientation of supporting part the protruding buckle that is equipped with in one side of surrounding edge, the joint interface has been seted up to the surrounding edge, the buckle card is located the joint interface.

In an embodiment of the backplane assembly, the card interface includes an access channel and a limiting channel, which are connected to each other, the access channel extends from a side of the surrounding edge far away from the board main body to the board main body, and the limiting channel extends from a side wall of the access channel along a length direction of the surrounding edge;

the buckle is located in the limiting channel, the back plate assembly further comprises a stop piece, and at least part of the stop piece is arranged on the access channel and used for stopping the buckle from being separated from the limiting channel.

In an embodiment of the backplane assembly, the stopper is a patch structure, and the patch structure is at least partially attached to a surface of the front frame exposed to the access passage.

In an embodiment of the backplane assembly, the patch structure includes a stop section and a bending section connected to each other, and the stop section is attached to a surface of the front frame exposed to the access passage;

the front frame deviates from the surface of 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 backplane assembly, at least a portion of the suspended portion is used for shielding the limiting light guide plate, and the portion of the suspended portion is made of a transparent material.

In an embodiment of the backplane assembly, a surface of the front frame, which is away from the board main body, is concavely provided with a limiting step for supporting a display panel.

The application further provides a backlight module which comprises a light bar, a light guide plate, an optical diaphragm 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 one side edge of the plate 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 to form a limiting space with the back plate in a surrounding mode;

the lamp strip pastes and locates the board main part of backplate just locates in the spacing space, the light guide plate is located the surface of board main part and part are located in the spacing space, the optics diaphragm is located the face of light guide plate.

The application also provides a display device, the display device includes display panel and as before backlight unit, display panel locates backlight unit's light-emitting side.

According to the technical scheme, the back plate assembly is arranged to be a combined structure of the back plate and the front frame, the front frame is detachably connected with the surrounding edge of the back plate, and at least part of the front frame is arranged opposite to the plate main body, so that a limiting space can be formed on the ground side of the back plate by the front frame and the back plate; with the arrangement, when the back plate assembly is applied to the backlight module and the limiting device, the light bar, the light guide plate, the optical diaphragm and the like can be sequentially fixed on the back plate from top to bottom, and then the front frame is fixed; therefore, the inconvenience in assembling the light bar, the light guide plate, the optical diaphragm and the like caused by the fact that an integrally formed U-shaped bending structure is arranged on the ground side of the back plate in a traditional mode is avoided, and by adopting the back plate assembly, the convenience in mounting the light bar, the light guide plate and the optical diaphragm is improved, and the assembly efficiency is improved; in addition, the backlight module and the display device can be assembled by using automatic equipment, and 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 used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

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 backing plate assembly of the present application;

FIG. 4 is an enlarged view taken at A in FIG. 3;

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

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

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1000	Display device	123	Buckle
100	Backlight module	124	Limiting groove
				10	Back plate assembly	125	Limiting step
11	Back plate	13	Stop piece
				111	Plate main body	131	Stop section
112	Surrounding edge	132	Bending section
				113	Card interface	20	Light bar
113a	Access way		30					Light guide plate
				113b	Spacing channel	40	Optical film
12	Front frame	50	Reflector plate
				121	Supporting part	200	Display panel
122	Suspended part

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

The present 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 backplane assembly 10 of the present application, the backplane assembly 10 includes:

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

the front frame 12, the front frame 12 with the surrounding edge 112 can be dismantled and connected, just the front frame 12 at least partly with the board main part 111 sets up relatively in order to enclose with the backplate 11 and form spacing space.

The backplane assembly 10 provided in the present application is applied to the backlight module 100 of the display device 1000, and defines that when the display device 1000 displays a picture, the upper side of the picture is the top side of the display device 1000 when the picture is viewed from the front, and the lower side 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 backplane assembly 10 are defined. Common backlight unit 100 adopts backplate 11 and the integrated configuration of gluey frame, backplate 11 encloses with gluey frame and closes formation installation space, can be used to install lamp strip 20, light guide plate 30 and optical diaphragm 40 isotructure, and in order to strengthen display device 1000's structural stability, backplate 11 will set up U type bending structure formation U type groove more in the ground side, need make the income light side of lamp strip 20 and light guide plate 30 be located U type inslot, in addition in some embodiments, need paste at the inboard surface in U type groove and establish reflection of light structure, avoid backlight unit 100 and display device 1000 edge light leak phenomenon to appear, influence whole display effect. However, the assembly of the backlight module 100 is troublesome and difficult to be applied to automatic 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, specifically, the back plate 11 comprises a plate main body 111 and a surrounding edge 112, the surrounding edge 112 is formed by bending the ground side edge 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 arranged opposite to the plate main body 111, so that the front frame 12 and the back plate 11 are combined to form a U-shaped structure on the ground side of the back plate 11 to form a limiting space, at the moment, structures such as a light bar 20 and a light guide plate 30 are attached to the plate main body 111, and the light bar 20 and part of the light guide plate 30 are located in the limiting 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 light bar 20, the reflector 50, the light guide plate 30, the optical film 40 and other structures can be firstly installed on the plate main body 111 from a direction perpendicular to the plate main body 111, and then the front frame 12 is assembled, so that the light incident sides of the light bar 20 and the light guide plate 30 are not required to be plugged into the U-shaped groove from the side 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 change in the height direction and the horizontal direction, the backlight module 100 and the display device 1000 can be assembled by using an automatic assembling device, and the assembling efficiency of the backlight module 100 and the display device 1000 is further improved. At this time, since the light bar 20 is attached to the plate 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 unit on the light bar 20 is disposed toward the light guide plate 30, and a scattering light source may be adopted, only by making the light guide plate 30 receive the light emitted by the light bar 20.

In addition, when the back plate assembly 10 of the present application is applied to the backlight module 100, the front frame 12 can extend to the upper side of the optical film 40, and there is no need to arrange the upper side wall of the U-shaped bending structure and the optical film 40 at an interval in the horizontal direction of the back plate 11 as in the conventional structure, and at this time, there is no need to arrange a light reflecting structure on the inner side surface of the front frame 12, thereby further improving the convenience of assembly. Of course, if the light reflecting structure still needs to be disposed in the backlight module 100, the light reflecting structure and the front frame 12 may be pre-assembled outside the automated assembly line, and then the automated assembly is performed, which not only reduces the assembly difficulty of the light reflecting structure, but also improves the assembly efficiency of the backlight module 100.

In this embodiment, the back panel 11 may also have surrounding edge structures on the top side and the left and right sides, but any one of the top side and the left and right sides is not configured to be a U-shaped bent 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 at the top side and the left and right sides, and is connected to the back plate 11 after the light bar 20, the light guide plate 30, and the optical film 40 are structurally connected to the back plate 11, so as to cover other sides of the light guide plate 30 and the optical film 40, thereby improving the stability of the overall structure, and meanwhile, when the backlight module is applied to the display device 1000, the mounting frame and the front frame 12 may jointly support the display panel 200, so that the stress on each side of the display panel 200 is balanced, and the mounting is stable.

Therefore, it can be understood that, in the technical solution of the present application, the back plate assembly 10 is configured as a combined structure of the back plate 11 and the front frame 12, the front frame 12 is detachably connected with the peripheral edge 112 of the back plate 11, and at least a part of the front frame is disposed opposite to the plate main body 111, so that the front frame 12 and the back plate 11 can form a limiting space on the ground side of the back plate 11; with such an arrangement, 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 to the back plate 11 from top to bottom, and then the front frame 12 is fixed; therefore, the inconvenience in assembling the light bar 20, the light guide plate 30, the optical diaphragm 40 and the like caused by the fact that the integrally formed U-shaped bending structure is arranged on the ground side of the back plate 11 in the traditional mode is avoided, the installation convenience of the light bar 20, the light guide plate 30 and the optical diaphragm 40 is improved and the assembling efficiency is improved by adopting the back plate assembly 10; in addition, the backlight module 100 and the display device 1000 can 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 plate 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, 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 different heights, and then the distance between the light guide plate 30 and the display panel 200 can be adjusted according to the requirement of the light field.

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 inside the surrounding edge 112, so that the surrounding edge 112 covers and shields the front frame 12, and the front frame 12 is protected, and when the display device 1000 and the backlight module 100 are in a suspended 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 backplane assembly 10 of the present application, the front frame 12 includes:

a support portion 121, the support portion 121 extending along the longitudinal direction of the peripheral edge 112 and abutting against the inner surfaces of the plate main body 111 and the peripheral edge 112; and

the hanging part 122 is arranged on one side of the supporting part 121, which is far away from the surrounding edge 112, in a protruding manner, and the hanging part 122 is arranged opposite to the back plate 11;

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

In this embodiment, the front frame 12 includes the supporting portion 121 and the free portion 122 that are connected, the supporting portion 121 and the free portion 122 all extend along the length direction of surrounding edge 112 and set up, and the supporting portion 121 and the internal surface of surrounding edge 112 and the face butt of board main part 111, so set up, can improve the relative position stability between front frame 12 and the backplate 11, free portion 122 locates the one side that deviates from surrounding edge 112 of supporting portion 121, and set up relatively with the backplate 11, form spacing space with supporting portion 121 and board main part 111 enclose, the light side of going into of lamp strip 20 and light guide plate 30 just locates between free portion 122 and the board main part 111 this moment.

Further, the supporting portion 121 is detachably connected to the surrounding edge 112, and/or the supporting portion 121 is detachably connected to the hanging portion 122, so that when the supporting portion 121 is detachably connected to the surrounding edge 112, the supporting portion 121 and the surrounding edge 112 can be detached to facilitate the detachment and installation of the light guide plate 30, the light bar 20 and other devices; when the supporting portion 121 is detachably connected to the hanging portion 122, the hanging portion 122 can be removed to facilitate the assembly and disassembly of the light guide plate 30, the light bar 20 and other devices; and when all can be dismantled between supporting part 121 and surrounding edge 112 and between supporting part 121 and the portion of hanging oneself 122 and be connected, alright choose more convenient operation mode according to the user's demand, improve the convenience of use.

In addition, it can be understood that, when the backplane assembly 10 of the present application is applied to the backlight module 100 and the display device 1000, the hanging portion 122 of the front frame 12 is required to bear and fix the display panel 200, so 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 to the surrounding edge 112, the distance between the display panel 200 and the light guide plate 30 can be adjusted by replacing the whole front frame 12, selecting the front frame 12 with different heights, or when the supporting portion 121 is detachably connected to the suspended 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 fig. 6, in some embodiments of the back plate assembly 10 of the present application, a buckle 123 is convexly disposed on one side of the supporting portion 121 facing the surrounding edge 112, the surrounding edge 112 is provided with a buckle interface 113, and the buckle 123 is clamped in the buckle interface 113.

In this embodiment, the protruding buckle 123 that is equipped with in one side of surrounding edge 112 of supporting part 121 orientation, joint mouth 113 has been seted up to surrounding edge 112, buckle 123 card is located in joint mouth 113 so that preceding frame 12 can dismantle with surrounding edge 112 and be connected, and buckle 123 and joint mouth 113's cooperation structure has stronger joint strength promptly, and need not to need to connect like structures such as bolted connection extra instrument and mounting, improves the equipment convenience. In addition, in some embodiments, a plurality of pairs of clips 123 and clip interfaces 113 are disposed between the front frame 12 and the surrounding edge 112 to improve the connection strength between the front frame 12 and the surrounding edge 112.

Referring to fig. 6, in some embodiments of the backplane 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 board main body 111 to the board 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 clip 123 is located in the limiting channel 113 b.

In this embodiment, the card interface 113 includes an access passage 113a and a limit passage 113b connected to each other, the access passage 113a and the limit passage 113b are disposed at an included angle, the access passage 113a extends from a side of the surrounding edge 112 far away from the board main body 111 to one side of the board main body 111, the limit passage 113b extends from a side wall of the access passage 113a along a length direction of the surrounding edge 112, at this time, when the front frame 12 is connected to the surrounding edge 112, it is only necessary to make the front frame 12 enter the access passage 113a from a direction perpendicular to the board main body 111 first, and then enter the limit passage 113b by translating along a horizontal direction, since the limit passage 113b has no opening in a direction perpendicular to the board main body 111, the front frame 12 can be limited to avoid the front frame 12 from coming off from a direction perpendicular to the board main body 111, and the overall connection strength and the structural stability are improved. Meanwhile, in the case where the panel main body 111 is horizontally placed, the front frame 12 is mounted only by displacement in the height direction and the horizontal direction, and it is also possible to perform the mounting by using an automated apparatus, thereby improving the assembling efficiency.

Referring to fig. 2 to 4, in some embodiments of the backplane assembly 10 of the present application, the backplane assembly 10 further includes a stopper 13, and the stopper 13 is at least partially disposed on the access channel 113a and is used for stopping the clip 123 from coming out of the limiting channel 113 b.

In this embodiment, the back plate assembly 10 further includes a stopper 13, and the stopper 13 is at least partially disposed in the access channel 113a to prevent the clip 123 from coming out of the limiting channel 113b, so as to 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 the connection position between the limiting channel 113b and the access channel 113a needs to be sealed to prevent the buckle 123 from coming off, which is not specifically limited herein. Meanwhile, the stopper 13 may be connected to the surrounding edge 112, the front frame 12, or both the surrounding edge 112 and the front frame 12 to further improve the connection strength between the front frame 12 and the rear panel 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 the surface of the front frame 12 exposed from the access duct 113 a.

In this embodiment, the stopper 13 is a patch structure, and only the patch structure needs to be attached to the cable of the front frame 12 on the surface of the access channel 113a, the stopper 13 is fixed in an attaching manner, and the stopper 13 is disassembled and assembled without contacting other tools, such as a screwdriver, so as to facilitate subsequent maintenance of the display device 1000 or the backlight source. Meanwhile, the stop part 13 is of 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 stop and limiting effects are better achieved.

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

In this embodiment, the patch structure includes backstop section 131 and bending section 132 that are connected, backstop section 131 pastes and locates the surface that appears in access way 113a of preceding frame 12, bending section 132 is the contained angle setting with backstop section 131, and paste and locate the surface that deviates from board main part 111 of preceding frame 12, so set up, can improve the connection area between patch structure and the preceding frame 12, improve the joint strength of patch structure and preceding frame 12, avoid the patch structure to drop from preceding frame 12, thereby can further avoid buckle 123 to deviate from spacing passageway 113b, connection stability and overall structure stability between frame 12 and backplate 11 before improving.

Referring to fig. 3 to fig. 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, spacing groove 124 has been seted up on the surface that deviates from board main part 111 in front frame 12, bending segment 132 sets up in spacing groove 124, so set up, can make the paster structure receive the limiting displacement of access way 113a and spacing groove 124 simultaneously, and then guarantee the stability of relative position between front frame 12 and the backplate 11, the setting of spacing groove 124 simultaneously, can make bending segment 132 and front frame 12 surfacing, avoid paster structure protrusion front frame 12, reduce the risk that the paster structure received the foreign object and scraped and drop from front frame 12.

In some embodiments of the backplane assembly 10 of the present application, at least a portion of the hanging portion 122 is used for shielding and limiting the light guide plate 30, and the portion of the hanging portion 122 is made of a 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 spacing 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 spacing space; meanwhile, the hanging portion 122 of the front frame 12 is required to bear and fix the display panel 200, and 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 may cause the suspended portion 122 to block more of the light guide plate 30, thereby affecting the light incident on the display panel 200. In this embodiment, the portion of the suspended portion 122 away from the surrounding edge 112, that is, the portion disposed opposite to the light guide plate 30, is made of a transparent material, which may be a transparent rigid plastic, such as polyphenylene sulfide (PPS), or a transparent glass fiber material, so as to play a role of strengthening and supporting the display panel 200, and prevent the front frame 12 from shielding more light guide plates 30, thereby preventing light from entering the display panel 200, and increasing the effective display area of the display device 1000.

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

When the back plate 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 bearing and fixing the display panel 200, in this embodiment, the surface of the front frame 12 departing from the plate main body 111 is concavely provided with the limiting step 125, so as to be arranged, when the display panel 200 is supported on the front frame 12, part of the display panel 200 is located in the limiting step 125, so as to limit the display panel 200, thereby improving the position stability of the display panel 200 in the display device 1000, and improving the stability of the whole structure of the display device 1000.

The present application further provides a backlight module 100, the backlight module 100 includes a light bar 20, a light guide plate 30, an optical film 40 and a back plate assembly 10 as described in any of the foregoing embodiments, the back plate assembly 10 includes a back plate 11 and a front frame 12, the back plate 11 includes a plate main body 111 and a surrounding edge 112, the surrounding edge 112 is formed by bending one side of the plate main body 111, the front frame 12 is detachably connected to the surrounding edge 112, and at least a portion of the front frame 12 is disposed 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 arranged in the limiting space, the light guide plate 30 is arranged on the surface of the plate main body 111, part of the light guide plate is located in the limiting space, and the optical diaphragm 40 is arranged on the plate surface of the light guide plate 30.

In this embodiment, the backlight module 100 includes a light bar 20, a light guide plate 30, an optical film 40 and a 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 the ground side edge of the plate main body 111, the front frame 12 is detachably connected to the surrounding edge 112, and at least a portion of the front frame and the surrounding edge is disposed opposite to the plate main body 111, that is, the front frame 12 and the back plate 11 are closed to form a U-shaped structure at the ground side of the back plate 11 to form a limiting space, at this time, the light bar 20 and the light guide plate 30 are both attached to the plate main body 111, and the light bar 20 and a portion of the light guide plate 30 are located in the limiting space; in the arrangement mode, because 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 light bar 20, the light guide plate 30, the optical diaphragm 40 and other structures 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 incident sides of the light bar 20 and the light guide plate 30 are not required to be plugged into the U-shaped groove from the side part of the U-shaped groove like the traditional 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 change in the height direction and the horizontal direction, the backlight module 100 and the display device 1000 can be assembled by using an automatic assembling device, and the assembling efficiency of the backlight module 100 and the display device 1000 is further improved. At this time, since the light bar 20 is attached to the plate 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 unit on the light bar 20 is disposed toward the light guide plate 30, and a scattering light source may be adopted, only by making the light guide plate 30 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 the light can be emitted from the light emitting surface of the light guide plate 30 and emitted to the display panel 200 through the optical film 40, thereby improving the light utilization rate. In addition, a plurality of optical films 40 may be provided, 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 actual circumstances.

In some embodiments, the front frame 12 may extend to the upper side of the optical film 40, and there is no need to arrange the upper side wall of the U-shaped bending structure and the optical film 40 at a distance in the horizontal direction of the back plate 11 as in the conventional structure, and at this time, there is no need to arrange a light reflecting structure on the inner side surface of the front frame 12, which further improves the assembly convenience. Of course, if the light reflecting structure still needs to be disposed in the backlight module 100, the light reflecting structure and the front frame 12 may be pre-assembled outside the automated assembly line, and then the automated assembly is performed, which not only reduces the assembly difficulty of the light reflecting structure, but also improves the assembly efficiency of the backlight module 100.

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 plate assembly 10 needs to be used for bearing and fixing the display panel 200, at this time, the distance between the light guide plate 30 and the display panel 200 can be specifically adjusted by replacing the front frames 12 with different heights, and then the distance between the light guide plate 30 and the display panel 200 can be adjusted according to the requirement of the light field.

Since the backlight module 100 provided by the present application employs the technical solutions of all the embodiments, at least all the advantages brought by the technical solutions are provided, and details are not repeated herein.

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

In this embodiment, the front frame 12 can extend to the upper side of the optical film 40, and there is no need to arrange 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, there is no need to arrange a light reflecting structure on the inner side surface of the front frame 12, thereby further improving the assembling convenience.

Referring to fig. 1 and fig. 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 provided by the present application employs the technical solutions of all the embodiments, at least all the advantages brought by the technical solutions are provided, and detailed descriptions thereof are omitted here.

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, and thus the distance between the light guide plate 30 and the display panel 200 may be adjusted according to the requirement of the light field.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the technical solutions that can be directly or indirectly applied to other related fields without departing from the spirit of the present application are intended to be included in the scope of the present application.

Claims

1. A backplane assembly, comprising:

2. The back plate assembly of claim 1, wherein the front frame comprises:

the hanging part is arranged on one side of the supporting part, which is far away from the surrounding edge, and is opposite to the back plate;

3. The back plate assembly as claimed in claim 2, wherein a buckle is protruded from a side of the supporting portion facing the surrounding edge, the surrounding edge is provided with a buckle interface, and the buckle is buckled at the buckle interface.

4. The back plate assembly of claim 3, wherein the clip interface comprises an access channel and a retaining channel connected, the access channel extending from a side of the perimeter away from the plate body toward the plate body, the retaining channel extending from a sidewall of the access channel along a length of the perimeter;

5. The backplane assembly of claim 4, wherein the stopper is a patch structure at least partially attached to a surface of the front frame exposed to the access channel.

6. The backplane assembly of claim 5, wherein the patch structure comprises a stopper section and a bending section connected to each other, the stopper section being attached to a surface of the front frame exposed to the access passage;

7. The backplane assembly according to claim 2, wherein at least a portion of the hanging portion is used for shielding and limiting the light guide plate, and the portion of the hanging portion is made of a transparent material.

8. A backplane assembly according to any of claims 1 to 7, wherein a surface of the front frame facing away from the board main body is recessed with a retaining step for supporting a display panel.

9. A backlight module is characterized in that the backlight module comprises a light bar, a light guide plate, an optical diaphragm and the back plate assembly as claimed in any one of claims 1 to 8, 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, part of the light guide plate is arranged in the limiting space, and the optical diaphragm is arranged on the plate surface of the light guide plate.

10. A display device, comprising a display panel and the backlight module as claimed in claim 9, wherein the display panel is disposed at a light-emitting side of the backlight module.