CN206990987U

CN206990987U - A kind of backlight module and liquid crystal display die set

Info

Publication number: CN206990987U
Application number: CN201720849930.3U
Authority: CN
Inventors: 何纯通; 李德生; 周福新
Original assignee: Truly Semiconductors Ltd
Current assignee: Truly Semiconductors Ltd
Priority date: 2017-07-13
Filing date: 2017-07-13
Publication date: 2018-02-09
Anticipated expiration: 2027-07-13

Abstract

The utility model provides a kind of backlight module and liquid crystal display die set, the backlight module includes underframe, the light guide plate on underframe, on underframe and positioned at the FPC and the illuminated LED in multiple tops on FPC of light guide plate incidence surface side, the light guide plate is provided with least one lug boss at incidence surface, and the boss is between LED adjacent on the FPC and pushes down the FPC.Backlight module provided by the utility model and liquid crystal display die set at incidence surface in light guide plate by setting lug boss, lug boss can push down FPC, it is effectively utilized the space between multiple LED in backlight module, FPC can more be firmly fixed, avoid FPC because paste failure and caused by warpage then to influence backlight effect etc. bad.

Description

A kind of backlight module and liquid crystal display die set

Technical field

Display technology field is the utility model is related to, more particularly to a kind of backlight module and liquid crystal display die set.

Background technology

In liquid crystal display die set, because display panel is not luminous in itself, it is necessary to provide light source using backlight module, now Some backlight modules include side entrance back module and down straight aphototropism mode set, side entrance back module due to structure it is more frivolous because This application is more extensive.Side entrance back module is generally comprised as structures such as the lamp bar of light source and light guide plates, and lamp bar can be by PCB and LED can also be made up of FPC and LED, more frivolous using the lamp bar of FPC and LED forms, be advantageous to backlight module Lightening design.During using FPC, if illuminated LED is pushed up in collocation, FPC and underframe are usually pasted by connection using double faced adhesive tape, Because during using pushing up illuminated LED, FPC arrangement needs the incidence surface towards light guide plate, existing light guide plate incidence surface one As be designed as plane, light guide plate just can not push down FPC, because FPC and LED in the course of work can produce heat, therefore paste FPC double faced adhesive tape often fails because of high temperature after long-term use so that FPC fitting it is insecure, particularly FPC thickness compared with When big, its flexible deficiency, the bounce to bend resistance just generated in the place that FPC needs to bend, is thus more prone to Warpage, it then have impact on LED illumination effect.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of backlight module and liquid crystal display die set, and it can lead to Cross and at least one lug boss for pushing down FPC be provided with incidence surface in light guide plate, be effectively utilized in backlight module multiple LED it Between space, FPC can more be firmly fixed, avoid FPC because paste failure and caused by warpage then influence backlight effect Etc. bad.

In order to solve the above technical problems, the utility model provides a kind of backlight module, including underframe, on underframe Light guide plate, on underframe and positioned at light guide plate incidence surface side FPC and the illuminated LED in multiple tops on FPC, it is described Light guide plate is provided with least one lug boss at incidence surface, and the boss is between LED adjacent on the FPC and pushes down The FPC.

As a kind of preferred scheme of the present utility model, the quantity of the lug boss is one, and the FPC includes lamp bar area And bonding pad；The lug boss is set corresponding to the bonding pad of the FPC, pushes down the FPC lamp bars area being connected with the bonding pad It is local.

As a kind of preferred scheme of the present utility model, the quantity of the lug boss is multiple, and each lug boss is located at every Between two adjacent LED.

As a kind of preferred scheme of the present utility model, the thickness of the FPC is more than 0.18mm.

As a kind of preferred scheme of the present utility model, the FPC double faced adhesive tapes are together on the underframe.

As a kind of preferred scheme of the present utility model, the double faced adhesive tape is heat-conducting glue.

As a kind of preferred scheme of the present utility model, the underframe is metal frame.

As a kind of preferred scheme of the present utility model, the lug boss is provided with the location division of a protrusion, and the FPC is set There is positioning hole corresponding with the location division.

As a kind of preferred scheme of the present utility model, reflector plate is posted in the lug boss towards LED side.

Further, there is provided a kind of liquid crystal display die set, including the backlight module described in any of the above item.

The utility model has following technique effect：Backlight module provided by the utility model and liquid crystal display die set pass through Lug boss is set at incidence surface in light guide plate, lug boss can push down FPC, be effectively utilized in backlight module between multiple LED Space, FPC can more be firmly fixed, avoid FPC because paste failure and caused by warpage then influence backlight effect etc. It is bad.Be advantageous to the quick installation site for determining FPC in addition, by the cooperation of positioning hole and location division, during assembling, can also limit FPC processed movement, will not occur shifting during transport or use etc. bad；Posted instead by the side of the lug boss Penetrate piece.The light that can externally scatter LED is reflected, and improves the light quantity into light guide plate so as to improve light efficiency.

Brief description of the drawings

Fig. 1 is a kind of structural representation of backlight module provided by the utility model；

Fig. 2 is a kind of A-A diagrammatic cross-sections of backlight module shown in Fig. 1；

Fig. 3 is a kind of B-B diagrammatic cross-sections of backlight module shown in Fig. 1；

Fig. 4 is a kind of structural representation of location division provided by the utility model；

Fig. 5 is a kind of structural representation of the reflector plate of lug boss provided by the utility model；

Fig. 6 is the structural representation of the reflector plate of another backlight module provided by the utility model.

Embodiment

To make the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings to the utility model Embodiment is described in further detail.

As Figure 1-3, which show a kind of structural representation of backlight module provided by the utility model.The backlight mould Group includes underframe 1, the light guide plate 2 on underframe, the FPC3 on underframe 1 and positioned at the incidence surface side of light guide plate 2 and set In the illuminated LED4 in multiple tops on FPC3, the FPC3 double faced adhesive tapes 5 are fitted on the underframe 1, in the present embodiment, institute The thickness for stating FPC is more than 0.18mm.When FPC thickness is more than 0.18mm, its flexibility is poor, when double faced adhesive tape is by thermal failure, The risk that warpage occurs is also higher.Preferably described double faced adhesive tape 5 is heat-conducting glue, and the underframe 1 is metal frame, and metal frame heat transfer is imitated Rate is fast, and FPC3 and the directly fitting of underframe 1 are advantageous to FPC3 radiating using heat-conducting glue.Specifically, the light guide plate 2 is entering light At least one lug boss 21 is provided with face, the lug boss 21 is located between LED4 adjacent on the FPC3 and pushed down described FPC3.In the present embodiment, the quantity of the lug boss 21 is one, and the FPC3 includes lamp bar area 31 and bonding pad 32, institute State lamp bar area 31 to be used to weld LED4 and set towards light guide plate 2, angle of the bonding pad 32 with lamp bar area 31 into a bending And extend to and can be electrically connected with the elements such as power supply board, the lug boss 21 is set corresponding to the bonding pad 32 of the FPC3, is pressed The FPC lamp bars area 31 being firmly connected with the bonding pad 32 is local.So, because FPC3 is needing the place that bends to generate confrontation The bounce of bending, therefore warpage is more prone to, by setting one corresponding to the position of FPC3 bonding pad 32 in light guide plate 2 After individual lug boss 21, lug boss can push down the local location in the lamp bar area 31 being connected with bonding pad 32 so that in this position lamp Bar area is fixed by the dual contact of light guide plate 2 and underframe 1, avoids to produce the bad of warpage in this local location.

Further, as shown in figure 4, the lug boss 21 be provided with one protrusion location division 211, the FPC3 be provided with Positioning hole 33 corresponding to the location division 211.So, by the cooperation of positioning hole 33 and location division 211, have when on the one hand assembling Beneficial to the quick installation site for determining FPC, it on the other hand can make it that FPC3 movement, will not also by the limitation of light guide plate 2 Occur shifting during transport or use etc. bad, there is provided the structural stability of backlight module.Further, such as Fig. 5 Shown, reflector plate 6 is posted in the side of lug boss 21 towards the LED4.Due to leaving one between LED4 and the incidence surface of light guide plate Fixed distance, therefore light will not fully enter the incidence surface of light guide plate, but some is externally scattered, can after so setting Reflected with the light externally scattered LED4 without light guide plate incidence surface of entering so that the light quantity into light guide plate is improved, from And improve light efficiency.

Preferably, the quantity of the lug boss 21 can also be multiple that each lug boss 21 is adjacent located at each two Between LED4.As shown in fig. 6, which show a kind of structure of the backlight module of the multiple lug bosses of setting provided by the utility model Schematic diagram.In the present embodiment, the quantity of the LED4 is 6, and a lug boss 21 is set between each two LED4, then convex The quantity in the portion of rising is 5, and the space between adjacent LED 4 can so be made to effective utilization, after setting multiple lug bosses, energy It is enough to push down FPC3 in multiple local locations, significantly more efficient fixed FPC, prevent the generation that warpage is bad.

Embodiment described above only expresses embodiment of the present utility model, and its description is more specific and detailed, but simultaneously Therefore the limitation to the utility model patent scope can not be interpreted as, as long as using equivalent substitution or the form of equivalent transformation institute The technical scheme of acquisition, it all should fall within the scope of protection of the utility model.

Claims

1. a kind of backlight module, including underframe, the light guide plate on underframe, on underframe and it is located at light guide plate incidence surface one The FPC of the side and illuminated LED in multiple tops on FPC, it is characterised in that the light guide plate is provided with least one at incidence surface Individual lug boss, the boss is between LED adjacent on the FPC and pushes down the FPC.

2. backlight module according to claim 1, it is characterised in that the quantity of the lug boss is one, the FPC bags Include lamp bar area and bonding pad；The lug boss is set corresponding to the bonding pad of the FPC, pushes down what is be connected with the bonding pad FPC lamp bars area is local.

3. backlight module according to claim 1, it is characterised in that the quantity of the lug boss is multiple, each projection Portion is between the adjacent LED of each two.

4. backlight module according to claim 1, it is characterised in that the thickness of the FPC is more than 0.18mm.

5. backlight module according to claim 1, it is characterised in that the FPC double faced adhesive tapes are together on the underframe.

6. backlight module according to claim 5, it is characterised in that the double faced adhesive tape is heat-conducting glue.

7. backlight module according to claim 1, it is characterised in that the underframe is metal frame.

8. backlight module according to claim 1, it is characterised in that the lug boss is provided with the location division of a protrusion, The FPC is provided with positioning hole corresponding with the location division.

9. backlight module according to claim 1, it is characterised in that post reflection in the lug boss towards LED side Piece.

10. a kind of liquid crystal display die set, it is characterised in that including the backlight module described in claim any one of 1-9.