CN214375694U

CN214375694U - Backlight module compatible with display screens of different sizes and vehicle-mounted display device

Info

Publication number: CN214375694U
Application number: CN202120859134.4U
Authority: CN
Inventors: 曹俊威; 冯超; 刘子平
Original assignee: Huizhou Han Da Mei Electronics Co ltd
Current assignee: Huizhou Han Da Mei Electronics Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-10-08
Anticipated expiration: 2031-04-23

Abstract

The utility model provides a backlight unit that can compatible not unidimensional display screen, includes well frame, is equipped with the mounting groove of installation display screen on the well frame, and the mounting groove carries out spacing lateral wall including the loading end that bears the display screen and to the display screen, and the lateral wall carries on spacingly through fixed elastic component to the display screen. The utility model provides a but backlight unit of compatible not unidimensional display screen has improved production efficiency, has reduced manufacturing cost. The utility model discloses still relate to an on-vehicle display device.

Description

Backlight module compatible with display screens of different sizes and vehicle-mounted display device

Technical Field

The utility model relates to an illumination display device technical field, in particular to backlight unit and vehicle-mounted display device that can compatible not unidimensional display screen.

Background

At present, due to the increasing development demand of the display industry, the display screen is more and more applied in various industries. The civil electronic products and the automobile industry have serious chip shortage problems, and the chip shortage problems can also extend to the shortage of driving ICs (integrated circuits) of a display screen, so that the capacity of a liquid crystal panel factory is unstable, and the price is increased. And the total size of the display screen is the size of the display area plus the size of the frame arranged around the display area (the display screen with the same size means that the size of the display area is the same). Therefore, although the display screens produced by different liquid crystal panel manufacturers are the same size, the sizes of the frames of the display screens produced by different liquid crystal panel manufacturers are not the same, and finally, the total sizes of the display screens produced by different liquid crystal panel manufacturers are different. Therefore, if the display screens of a plurality of liquid crystal panel manufacturers are purchased, the backlight modules with various sizes are needed to be matched with the corresponding display screens, so that the production efficiency is low, and the cost is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a but backlight unit of compatible not unidimensional display screen has improved production efficiency, has reduced manufacturing cost.

The utility model provides a backlight unit that can compatible not unidimensional display screen, includes well frame, is equipped with the mounting groove of installation display screen on the well frame, and the mounting groove carries out spacing lateral wall including the loading end that bears the display screen and to the display screen, and the lateral wall carries on spacingly through fixed elastic component to the display screen.

In an embodiment of the present invention, the mounting groove is rectangular, and the mounting groove includes four side walls, at least one side wall is fixed with the elastic member.

In an embodiment of the present invention, the elastic member is a long strip, and the elastic member is disposed along the length direction of the side wall.

In an embodiment of the present invention, the side wall is fixed with a plurality of elastic members, and the elastic members are arranged at intervals along a length direction of the side wall.

In an embodiment of the present invention, the elastic member is made of silica gel or rubber.

The utility model discloses an in the embodiment, be fixed with the bubble celloidin on the above-mentioned loading end, work as the display screen is installed when in the mounting groove, the display screen is fixed the bubble celloidin.

The embodiment of the utility model provides an in, when above-mentioned display screen is installed in the mounting groove, the elastic component with interval between the display screen is 0.1mm ~ 0.3 mm.

The utility model discloses an in the embodiment, but above-mentioned compatible not unidimensional display screen's backlight unit still includes underframe and backlight, the underframe with well frame passes through fixture block and draw-in groove cooperation fixed connection, the backlight is in through heat-conducting glue fixed connection on the medial surface of underframe.

The embodiment of the utility model provides an in, above-mentioned backlight unit that can compatible not unidimensional display screen still includes reflectance coating and light guide plate, reflectance coating fixed connection be in the underframe, light guide plate fixed connection be in on the reflectance coating, the light guide plate is including going into the light side, go into the light side with the backlight sets up relatively.

The utility model also provides an on-vehicle display device, including foretell compatible not unidimensional display screen's backlight unit.

The utility model discloses a but backlight unit of compatible not unidimensional display screen is including the mounting groove that is used for installing the display screen, and the size of a dimension of mounting groove according to installing the display screen design that the display area is with cun nevertheless the total dimension is the biggest. When the size of the mounting groove is larger than the total size of the display screen, the display screen is limited by fixing the elastic piece on the side wall of the mounting groove, so that the display screen is prevented from loosening, and the safety of the display screen in the assembling and vibrating processes can be protected; when the size of the mounting groove is matched with the total size of the display screen, the elastic piece is not needed. Therefore, a plurality of sets of backlight modules which are different in size and compatible with display screens of different overall sizes do not need to be developed, the production efficiency is improved, and the manufacturing cost is reduced.

Drawings

Fig. 1 is a schematic view of the local enlarged structure of the backlight module compatible with different size display screens and the assembled display screen of the present invention.

Fig. 2 is a schematic view of a split structure of a backlight module compatible with different size display screens of the present invention.

Fig. 3 is a schematic view of a partially enlarged structure of the middle frame of the present invention.

Detailed Description

The application provides a backlight module that can compatible not unidimensional display screen.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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.

In order to facilitate understanding of those skilled in the art, the present application provides a specific implementation process of the technical solution provided by the present application through the following embodiments.

Fig. 1 is the utility model discloses a but the local enlarged structure schematic diagram after backlight unit and the display screen equipment of compatible not unidimensional display screen, fig. 2 is the utility model discloses a can be compatible not unidimensional display screen's backlight unit's split structure schematic diagram, fig. 3 is the utility model discloses a local enlarged structure schematic diagram of well frame please refer to fig. 1 to fig. 3, can be compatible not unidimensional display screen's backlight unit includes well frame 11, is equipped with the mounting groove 101 of installation display screen 31 on the well frame 11, and mounting groove 101 is including bearing display screen 31's loading end 111 and carrying out spacing lateral wall 112 to display screen 31, and lateral wall 112 carries on spacingly to display screen 31 through fixed elastic component 12.

The utility model discloses a but backlight unit of compatible not unidimensional display screen is including the mounting groove 101 that is used for installing display screen 31, and the size of a dimension of mounting groove 101 according to installing display area with the biggest display screen 31 design of cun nevertheless total dimension. When the size of the mounting groove 101 is larger than the total size of the display screen 31, the display screen 31 is limited by fixing the elastic piece 12 on the side wall 112 of the mounting groove 101, so that the display screen 31 is prevented from loosening, and the safety of the display screen 31 in the assembling and vibrating processes can be protected; when the size of the mounting groove 101 matches the overall size of the display screen 31, the elastic member 12 is not required. Therefore, a plurality of sets of backlight modules which are different in size and compatible with display screens 31 of different overall sizes do not need to be developed, the production efficiency is improved, and the manufacturing cost is reduced.

Further, the mounting groove 101 is rectangular, the mounting groove 101 includes four sidewalls 112, and at least one sidewall 112 is fixed with the elastic member 12. In the embodiment, the elastic member 12 is fixed to two side walls 112 of the mounting groove 101, but not limited thereto, for example, the elastic member 12 is fixed to all four side walls 112 of the mounting groove 101.

Further, the elastic member 12 is elongated, and the elastic member 12 is disposed along the length direction of the sidewall 112. In the present embodiment, the elastic member 12 is disposed at one end of the sidewall 112, but not limited thereto, for example, the elastic member 12 may extend along one end of the sidewall 112 to the other end of the sidewall 112; or the elastic member 12 is provided at the middle portion of the side wall 112.

Further, in another preferred embodiment, the elastic member 12 has a cylindrical shape.

Further, a plurality of elastic members 12 are fixed to the side wall 112, and the elastic members 12 are spaced apart from each other along the longitudinal direction of the side wall 112. In the present embodiment, the elastic members 12 are respectively disposed along the length direction of the four side walls 112 at intervals, but not limited thereto, for example, the elastic members 12 are disposed along the length direction of one side wall 112 of the four side walls 112 at intervals.

Further, the elastic member 12 is made of silicone or rubber.

Further, foam rubber 13 is fixed on the bearing surface 111, and when the display screen 31 is installed in the installation groove 101, the display screen 31 is fixed on the foam rubber 13. In the embodiment, when the display screen 31 is subjected to vibration, the foam rubber 13 can reduce the influence of the vibration on the display screen 31.

Further, when the display screen 31 is installed in the installation groove 101, the distance between the elastic member 12 and the display screen 31 is 0.1mm to 0.3 mm. In the embodiment, the distance between the elastic member 12 and the display screen 31 is 0.2mm, but not limited thereto, for example, the distance between the elastic member 12 and the display screen 31 is 0.15mm, 0.25 mm. The distance between the elastic member 12 and the display screen 31 is used for facilitating installation of the display screen 31, and when the middle frame 11 is subjected to expansion deformation at high temperature, the distance between the elastic member 12 and the display screen 31 can also be used as a deformation safety gap.

Furthermore, the backlight module compatible with display screens of different sizes further comprises a bottom frame 17 and a backlight source 14, the bottom frame 17 and the middle frame 11 are matched and fixedly connected with each other through a clamping block and a clamping groove, and the backlight source 14 is fixedly connected to the inner side surface of the bottom frame 17 through a heat-conducting glue (not shown). In this embodiment, the middle frame 11 is a plastic frame, the bottom frame 17 is an iron frame made of aluminum alloy, and the iron frame made of aluminum alloy can make the backlight module compatible with the display screens of different sizes have better heat dissipation effect, but not limited to this, for example, the bottom frame 17 can also be made of plastic.

Further, the backlight source 14 includes a circuit board and a light source electrically connected to the circuit board, and after the circuit board is fixedly connected to the inner side surface of the bottom frame 17 through a heat-conducting adhesive, a large amount of heat energy generated by the operation of the light source can be rapidly transmitted to the bottom frame 17 through the heat-conducting adhesive for heat dissipation.

Further, the light source includes a plurality of LED lamp pearls (not shown), and a plurality of LED lamp pearls interval sets up on the circuit board.

Furthermore, the backlight module compatible with the display screens with different sizes further comprises a reflection film 15 and a light guide plate 16, wherein the reflection film 15 is fixedly connected in the bottom frame 17, the light guide plate 16 is fixedly connected on the reflection film 15, the light guide plate 16 comprises a light incident side face, and the light incident side face is opposite to the backlight source 14.

Further, the bottom frame 17 includes a bottom plate and a frame connected to the bottom plate, the frame is disposed around the circumference of the bottom plate, and in this embodiment, the backlight 14 is disposed on the frame.

Further, the light guide plate 16 further includes a light emitting surface and a fixing surface which are arranged opposite to each other from top to bottom, the light emitting surface and the fixing surface are both parallel to the bottom plate, the fixing surface is located on one side close to the bottom plate, the light emitting surface is located on one side far away from the bottom plate, and the reflective film 15 is attached to the surface of the light guide plate 16 and exposes the light incident side surface and the light emitting surface.

Further, the backlight module compatible with the display screens with different sizes further comprises a plurality of flexible blocks (not shown) for fixing the light guide plate 16, the plurality of flexible blocks are arranged around the circumference of the light guide plate 16 and exposed out of the light incident side surface, and each flexible block is abutted between the light guide plate 16 and the frame. The flexible piece includes silica gel, rubber and plastic etc. and in this embodiment, the preferred silica gel of flexible piece adopts silica gel to support to lean on and can prevent between light guide plate 16 and frame that light guide plate 16 from controlling to rock, also makes light guide plate 16 can not take place the displacement when overturning from top to bottom in underframe 17 simultaneously.

Further, the backlight module compatible with the display screens with different sizes further comprises a diffusion film 18, a brightness enhancement film 19 and a brightness enhancement film 21, the diffusion film 18 is fixedly connected with the light guide plate 16, the brightness enhancement film 19 covers the diffusion film 18, and the brightness enhancement film 21 covers the brightness enhancement film 19. In the embodiment, there are two diffuser films 18, two brightness enhancement films 19 and one brightness enhancement film 21, but the number of diffuser films 18, brightness enhancement films 19 and brightness enhancement films 21 can be increased or decreased according to actual conditions. The diffusion film 18, the brightness enhancement film 19, and the brightness enhancement film 21 are adhesively fixed to the light guide plate 16 by tapes (not shown), for example: one side of diffusion barrier 18, membrane 19 that adds lustre to and brightness enhancement film 21 all is equipped with the lug, and each lug dislocation set, diffusion barrier 18, membrane 19 that adds lustre to and brightness enhancement film 21 pass through respective lug and fix on light guide plate 16 through the double faced adhesive tape respectively, prevent that diffusion barrier 18, membrane 19 that adds lustre to and brightness enhancement film 21 from becoming flexible abnormal sound.

The utility model discloses still relate to an on-vehicle display device, including foretell compatible not unidimensional display screen's backlight unit. In the embodiment, the vehicle-mounted display device comprises a vehicle display screen, a vehicle-mounted streaming media rearview mirror display, a vehicle-mounted central control, a vehicle-mounted instrument display and the like.

The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims

1. The utility model provides a backlight unit that can compatible not unidimensional display screen, its characterized in that, includes well frame (11), be equipped with mounting groove (101) of installation display screen (31) on well frame (11), mounting groove (101) are including bearing loading face (111) of display screen (31) and right display screen (31) carry out spacing lateral wall (112), lateral wall (112) are right through fixed elastic component (12) display screen (31) carry out spacingly.

2. The backlight module compatible with display screens with different sizes as claimed in claim 1, wherein the mounting groove (101) is rectangular, the mounting groove (101) comprises four side walls (112), and at least one side wall (112) is fixed with the elastic member (12).

3. The backlight module compatible with different sized display screens as claimed in claim 2, wherein the elastic member (12) is in an elongated shape, and the elastic member (12) is disposed along the length direction of the sidewall (112).

4. The backlight module compatible with display screens with different sizes as claimed in claim 2, wherein a plurality of the elastic members (12) are fixed on the side wall (112), and the elastic members (12) are arranged at intervals along the length direction of the side wall (112).

5. The backlight module compatible with display screens with different sizes as claimed in claim 1, wherein the elastic member (12) is made of silicone or rubber.

6. The backlight module compatible with display screens with different sizes as claimed in claim 1, wherein the supporting surface (111) is fixed with foam (13), and when the display screen (31) is installed in the installation groove (101), the display screen (31) is fixed on the foam (13).

7. The backlight module compatible with display screens with different sizes as claimed in claim 1, wherein when the display screen (31) is installed in the installation groove (101), the distance between the elastic member (12) and the display screen (31) is 0.1mm to 0.3 mm.

8. The backlight module compatible with display screens with different sizes as claimed in claim 1, further comprising a bottom frame (17) and a backlight source (14), wherein the bottom frame (17) and the middle frame (11) are fixedly connected by means of a fitting between a fitting block and a fitting groove, and the backlight source (14) is fixedly connected to an inner side surface of the bottom frame (17) by means of a heat conducting adhesive.

9. The backlight module compatible with different-size display screens of claim 8, further comprising a reflective film (15) and a light guide plate (16), wherein the reflective film (15) is fixedly connected in the bottom frame (17), the light guide plate (16) is fixedly connected on the reflective film (15), and the light guide plate (16) comprises a light incident side surface which is arranged opposite to the backlight source (14).

10. A vehicle-mounted display device, comprising the backlight module compatible with display screens of different sizes as claimed in any one of claims 1 to 9.