CN201654371U

CN201654371U - Liquid crystal display module

Info

Publication number: CN201654371U
Application number: CN2009202606063U
Authority: CN
Inventors: 周群珍; 吴石梁
Original assignee: TCL Corp
Current assignee: TCL Corp
Priority date: 2009-11-20
Filing date: 2009-11-20
Publication date: 2010-11-24
Anticipated expiration: 2019-11-20

Abstract

The utility model discloses a liquid crystal display module, which includes a liquid crystal screen, a backlight sheet, an iron frame and a flexible circuit board, wherein the liquid crystal screen and the backlight sheet are overlapped in the iron frame, the upper connecting end of the flexible circuit board is electrically connected with the lower connecting end of the liquid crystal screen, a double-faced pin is arranged at the lower connecting end of the flexible circuit board and is used to access a connecting set of an equipment main board, the flexible and the iron frame are partially overlapped to form at least one superposition area, and a double-faced copper-exposed area is formed in the superposition area of the flexible circuit board with the iron frame and corresponds to an earthing area of the equipment main board. One surface of the double-faced copper-exposed area is in contact with the iron frame, and the other surface is in contact with the earthing area of the equipment main board, therefore the flexible circuit board, the iron frame and the equipment main board are connected together at the same time, the conducting double-faced adhesive tape used in the prior art can be replaced by the common double-faced adhesive tape, a larger area of exposed copper is not required on the flexible circuit, and the module production cost is greatly reduced.

Description

The liquid crystal display module

Technical field

The utility model relates to field of liquid crystal display, and in particular, what improvement related to is a kind of liquid crystal display module.

Background technology

In the existing liquid crystal indicator, liquid crystal display module (liquid crystal module, LCM) be a kind of with liquid crystal display (liquid crystal display, LCD), chip for driving (integrated circuit, IC), flexible PCB (flexible printed circuit, FPC) and the liquid crystal indicator that is assembled together of element such as backlight.

Traditional LCM as shown in Figure 1, generally comprise liquid crystal display 11, backlight 13, chase 15, flexible PCB 17 and some conduction double faced adhesive tapes 19, described liquid crystal display 11 and backlight 13 overlay in the chase 15, the lower end of described liquid crystal display 11 is electrically connected flexible PCB 17, traditional LCM is in order to reach the ground connection design between LCM and equipment mainboard, general all is to stick on two conduction double faced adhesive tapes 19 at chase 15 back sides of LCM, and need on flexible PCB 17, reveal a bulk of copper simultaneously and form dew copper district 172, stick on a conduction double faced adhesive tape 19 in dew copper district 172 again, make flexible PCB 17 at LCM and equipment mainboard assembling back by conduction double faced adhesive tape 19, chase 15 links together with the ground of equipment mainboard, to improve static discharge (Electro-Static discharge, ESD) effect of LCM.

But this kind earthing method need be fitted with the conduction double faced adhesive tape, and cost is higher than common double faced adhesive tape, and flexible PCB need reveal a bulk of copper in order to ensure conductive effect, and therefore, prior art still haves much room for improvement and develops.

The utility model content

The purpose of this utility model is, is to provide a kind of liquid crystal display module, satisfying under the prerequisite that equipment ESD requires, and reduces to reveal on the flexible PCB area in copper district, and replaces with common double faced adhesive tape and to conduct electricity double faced adhesive tape to reduce cost.

The technical solution of the utility model is as follows:

A kind of liquid crystal display module, comprise liquid crystal display, backlight, chase and flexible PCB, described liquid crystal display and backlight overlay in the chase, the last link of described flexible PCB is electrically connected the following link of described liquid crystal display, the following link of described flexible PCB is two-sided pin, the Connection Block of equipment mainboard is used to plug into, described flexible PCB overlaps to form at least one zone that overlaps with described chase part, and described flexible PCB offers two-sided dew copper district in itself and the access area that overlaps corresponding device mainboard in the zone of chase.

Described liquid crystal display module, wherein, described chase and flexible PCB are all fitted by double faced adhesive tape and equipment mainboard.

Described liquid crystal display module, wherein, described chase is provided with at least one salient point at it with overlapping of flexible PCB in the zone.

Described liquid crystal display module, wherein, the thickness sum of the height of described salient point and flexible PCB equals the thickness of described double faced adhesive tape.

Described liquid crystal display module, wherein, the following link both sides of described flexible PCB form with chase respectively and overlap the zone.

Described liquid crystal display module, wherein, described chase is equipped with two salient points in each overlaps the zone.

A kind of liquid crystal display module provided by the utility model, its flexible PCB forms with chase and overlaps the district, and the access area of corresponding device mainboard is provided with two-sided dew copper district in overlapping the zone, the one side contact chase in described two-sided dew copper district, the access area of another side contact arrangement mainboard, thereby the ground of flexible PCB, chase and equipment mainboard all is connected together simultaneously, therefore can make the conduction double faced adhesive tape that uses in the prior art into common double faced adhesive tape, flexible PCB also need not large-area dew copper, thereby reduces the module production cost greatly.

Description of drawings

Fig. 1 is the exploded perspective view of liquid crystal display module structure in the prior art;

Fig. 2 is the exploded perspective view of liquid crystal display module in the utility model;

Fig. 3 is the stereographic map of liquid crystal display module in the utility model.

Embodiment

Below with reference to accompanying drawing, device embodiment of the present utility model and embodiment are described in detail.

With reference to figure 2 is the exploded perspective view of liquid crystal display module better embodiment of the present utility model, described liquid crystal display module comprises liquid crystal display 21, backlight 23, chase 25, flexible PCB 27 and some double faced adhesive tapes 29, described liquid crystal display 21 and backlight 23 overlay in the chase 25, the lower end of described liquid crystal display 21 is electrically connected flexible PCB 27, the last link of described flexible PCB 27 is electrically connected the following link of described liquid crystal display 21, the following link of described flexible PCB 27 is two-sided pin, the Connection Block of the equipment mainboard that is used to plug into.

Described flexible PCB 27 is provided with two-sided dew copper district 272 in the position corresponding with access area on the equipment mainboard, the one side in the two-sided dew copper district of flexible PCB 27 is contacted with the access area of equipment mainboard is corresponding, another side then contacts with chase 25, in better embodiment of the present utility model, for chase 25 is better contacted with flexible PCB 27, two-sided dew copper district 272 and chase 25 overlapping contacts with flexible PCB 27, described chase 25 is provided with two salient points 252 in the lap position, the diameter of described salient point 252 is 0.6mm, the height of projection is 0.05 ± 0.03mm, at this, the height of salient point 252 adds that the thickness of flexible PCB 27 needs identical with the thickness of double faced adhesive tape 29, the flatness of liquid crystal display module can be guaranteed like this, chase 25 can be made again, flexible PCB 27 and the more effective contact of equipment mainboard.

In the scheme that the utility model provides, in order to make flexible PCB 27, chase 25 and equipment mainboard can disposablely better link together ground, to improve the ESD effect, can reduce cost again, described flexible PCB 27 overlaps to form with chase 25 parts and overlaps the zone, and chase 25 is provided with salient point 252 in overlapping the zone, and flexible PCB is provided with two-sided dew copper district 272 in overlapping the zone, can make flexible PCB 27 like this, the ground of chase 25 and equipment mainboard all is connected together simultaneously, simultaneously can make the conduction double faced adhesive tape that uses in the prior art into common double faced adhesive tape, flexible PCB 27 also need not large-area dew copper, thereby reduces the module production cost greatly.

In the above preferred embodiment; following link both sides at flexible PCB 27 overlap the zone with chase 25 formation respectively; and chase 27 is equipped with two salient points 252 in each coincidence zone and effectively contacts with the equipment mainboard to guarantee chase 25, flexible PCB 27; for those of ordinary skills; can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model claims.

Claims

1. liquid crystal display module, comprise liquid crystal display, backlight, chase and flexible PCB, described liquid crystal display and backlight overlay in the chase, the last link of described flexible PCB is electrically connected the following link of described liquid crystal display, the following link of described flexible PCB is two-sided pin, the Connection Block of equipment mainboard is used to plug into, it is characterized in that: described flexible PCB overlaps to form at least one zone that overlaps with described chase part, and described flexible PCB offers two-sided dew copper district in itself and the access area that overlaps corresponding device mainboard in the zone of chase.

2. liquid crystal display module according to claim 1 is characterized in that, described chase and flexible PCB are all fitted by double faced adhesive tape and equipment mainboard.

3. liquid crystal display module according to claim 2 is characterized in that, described chase is provided with at least one salient point at it with overlapping of flexible PCB in the zone.

4. liquid crystal display module according to claim 3 is characterized in that the thickness sum of the height of described salient point and flexible PCB equals the thickness of described double faced adhesive tape.

5. according to the described liquid crystal display module of arbitrary claim in the claim 1 to 4, it is characterized in that the following link both sides of described flexible PCB form with chase respectively and overlap the zone.

6. liquid crystal display module according to claim 5 is characterized in that, described chase is equipped with two salient points in each overlaps the zone.