CN201637966U

CN201637966U - Liquid-crystal display module

Info

Publication number: CN201637966U
Application number: CN200920204800XU
Authority: CN
Inventors: 杨泓; 郭捷; 常伟; 刘张琦; 卢坚光; 肖永星
Original assignee: Tianma Microelectronics Co Ltd
Current assignee: Tianma Microelectronics Co Ltd
Priority date: 2009-09-15
Filing date: 2009-09-15
Publication date: 2010-11-17
Anticipated expiration: 2019-09-15

Abstract

The utility model provides a liquid-crystal display module comprising a first light source, a second light source and a flexible circuit board, wherein the flexible circuit board is electrically connected with the first light source and the second light source and comprises a first pad, a second pad, a third pad and a fourth pad which are distributed in a rectangular shape. The liquid-crystal display module has the advantages of high space utilization rate and good compatibility.

Description

The liquid crystal display module

Technical field

The utility model relates to a kind of liquid crystal display module, relates in particular to a kind of undersized liquid crystal display module.

Background technology

Liquid crystal indicator because of have low diathermaneity, characteristics such as volume is compact and power consumption is low, be widely used in fields such as mobile phone, personal digital assistant, notebook computer, PC and TV.Because the liquid crystal itself in the display panels is not had a characteristics of luminescence, therefore for reaching display effect, need display panels to provide a planar light source device to realize Presentation Function, as module backlight, its function is to provide the area source that brightness is abundant and be evenly distributed for display panels.

In the general liquid crystal display module, (FlexiblePrinted Circuit FPC) is electrically connected to the complete machine mainboard to the back light of module backlight by flexible PCB.In undersized liquid crystal display module, the element region space of flexible PCB is comparatively nervous, and wiring on it and element setting all need tight planning, when needs are adjusted, is easy to occur the situation that conventional wire jumper design can't be connected up.And the module backlight of the liquid crystal display module of different moneys and flexible PCB may be not general, cause the problem of repetition product design easily, make to get the raw materials ready and the stock faces risk.

The utility model content

Technical problem to be solved in the utility model is that available liquid crystal shows that the space availability ratio of module is low, compatible bad, has proposed a kind of space availability ratio height, compatible good liquid crystal display module.

In order to solve the problems of the technologies described above, the utility model provides a kind of liquid crystal display module, described liquid crystal display module comprises first light source, secondary light source and flexible PCB, described flexible PCB electrically connects described first light source and described secondary light source, and described flexible PCB comprises first pad, second pad, the 3rd pad and the 4th pad of rectangular distribution.

In the above-mentioned liquid crystal display module, the positive pole of described first light source electrically connects described the 4th pad, the negative pole of described first light source electrically connects described first pad, and the positive pole of described secondary light source electrically connects described second pad, and the negative pole of described secondary light source electrically connects described the 3rd pad.

In the above-mentioned liquid crystal display module, described first pad and described second pad electrically connect by one zero Europe resistance, and described the 3rd pad and described the 4th pad are unsettled, so can realize the series connection of first light source and secondary light source.

In the above-mentioned liquid crystal display module, described first pad and described the 3rd pad electrically connect by one zero Europe resistance, and described second pad and described the 4th pad electrically connect by one zero Europe resistance, so can realize the parallel connection of first light source and secondary light source.

In the above-mentioned liquid crystal display module, described first pad, second pad, the 3rd pad and the 4th pad are square profile, and this is the best distribution scheme.

In the above-mentioned liquid crystal display module, the distribution that assumes diamond in shape of described first pad, second pad, the 3rd pad and the 4th pad.

In the above-mentioned liquid crystal display module, display panels and module backlight that further comprising is superimposed with each other is provided with, wherein said display panels are that catercorner length is 3.0 inches or less than the relatively nervous liquid crystal display module in 3.0 inches element region space.

In the liquid crystal display module of the present utility model, described first pad on the described flexible PCB, described second pad, described the 3rd pad and the rectangular distribution of described the 4th pad, bigger saving element and wiring space.Especially in small size liquid crystal display module, such pad distribution mode space availability ratio is the highest, can save the space of a resistance, has created condition for the very nervous project of flexible PCB element region realizes compatible design.After compatibility improved, described flexible PCB went for the serial or parallel connection demand of multiple module backlight, has reduced material and the finished goods inventory of liquid crystal display module in manufacture process, had reduced risk and allotment flexibility ratio.

Therefore, liquid crystal display module of the present utility model has space availability ratio height, compatible good advantage.

Description of drawings

Fig. 1 is the module backlight of the utility model liquid crystal display module one better embodiment and the circuit connection diagram of flexible PCB.

Fig. 2 is the module series circuit connection diagram backlight of the utility model liquid crystal display module.

Fig. 3 is the module parallel circuit connection diagram backlight of the utility model liquid crystal display module.

Embodiment

Describe below in conjunction with the structure of accompanying drawing liquid crystal display module of the present utility model.

See also Fig. 1, Fig. 1 is the module backlight of the utility model liquid crystal display module one better embodiment and the circuit connection diagram of flexible PCB.Described liquid crystal display module 1 is a small size liquid crystal display module, and it comprises a display panels (figure does not show), a module backlight (figure does not show) and a flexible PCB (figure does not show).Described display panels is that catercorner length is 3.0 inches or less than the relatively nervous liquid crystal display module in 3.0 inches element region space, described module backlight and the superimposed setting of described display panels, it mainly acts on and is to provide the planar light that brightness is abundant, be evenly distributed for described display panels.

Described module backlight comprises the first light source D1 and secondary light source D2, in the present embodiment, described first light source D1 and secondary light source D2 are light emitting diode (light emitting diode, LED), the wherein said first light source D1 comprises anodal A1 and negative pole K1, and described secondary light source D2 comprises anodal A2 and negative pole K2.

Described flexible PCB is designed primarily to described module backlight driving voltage is provided, and it comprises first pad 1, second pad 2, the 3rd pad 3 and the 4th pad 4.Wherein, described first pad 1, described second pad 2, described the 3rd pad 3 and the 4 rectangular distributions of described the 4th pad, preferred plan certainly, also can be done corresponding the adjustment as required for being square profile, distributes such as assuming diamond in shape etc.

The anodal A1 of the described first light source D1 electrically connects described the 4th pad 4, the first negative pole K1 of the described first light source D1 electrically connects described first pad 1, the anodal A2 of described secondary light source D2 electrically connects described second pad 2, and the negative pole K2 of described secondary light source D2 electrically connects described the 3rd pad 3.

When the described first light source D1 and described secondary light source D2 need connect, described first pad 1 and described second pad 2 electrically connected by one zero Europe resistance (figure does not show), and described the 3rd pad 3 and described the 4th pad 4 are unsettled, as shown in Figure 2.

When the described first light source D1 and described secondary light source D2 need when in parallel, described first pad 1 and described the 3rd pad 3 electrically connect by one zero Europe resistance, and described second pad 2 and described the 4th pad 4 are by one zero Europe resistance electric connections, as shown in Figure 3.

Wherein, in above-mentioned two kinds of annexations, described zero Europe resistance compatibility that can also intensifier circuit, makes things convenient for debug circuit and plays fuse usefulness except the scratch line effect.

In above-mentioned liquid crystal display module, described first pad 1 on the described flexible PCB, described second pad 2, described the 3rd pad 3 and the 4 rectangular distributions of described the 4th pad, bigger saving element and wiring space.Especially in small size liquid crystal display module, such pad distribution mode space availability ratio is the highest, can save the space of a resistance, has created condition for the very nervous project of flexible PCB element region realizes compatible design.After compatibility improved, described flexible PCB went for the serial or parallel connection demand of multiple module backlight, has reduced material and the finished goods inventory of liquid crystal display module in manufacture process, had reduced risk and allotment flexibility ratio.

In sum, liquid crystal display module of the present utility model has space availability ratio height, compatible good advantage.

Only be preferred case study on implementation of the present utility model below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. liquid crystal display module, it comprises first light source, secondary light source and flexible PCB, it is characterized in that: described flexible PCB electrically connects described first light source and described secondary light source, and described flexible PCB comprises first pad, second pad, the 3rd pad and the 4th pad of rectangular distribution.

2. liquid crystal display module according to claim 1, it is characterized in that: the positive pole of described first light source electrically connects described the 4th pad, the negative pole of described first light source electrically connects described first pad, the positive pole of described secondary light source electrically connects described second pad, and the negative pole of described secondary light source electrically connects described the 3rd pad.

3. liquid crystal display module according to claim 2 is characterized in that: described first pad and described second pad electrically connect by one zero Europe resistance.

4. liquid crystal display module according to claim 3 is characterized in that: described the 3rd pad and described the 4th pad are unsettled.

5. liquid crystal display module according to claim 2 is characterized in that: described first pad and described the 3rd pad electrically connect by one zero Europe resistance.

6. liquid crystal display module according to claim 5 is characterized in that: described second pad and described the 4th pad electrically connect by one zero Europe resistance.

7. liquid crystal display module according to claim 1 is characterized in that: described first pad, second pad, the 3rd pad and the 4th pad are square profile.

8. liquid crystal display module according to claim 1 is characterized in that: the distribution that assumes diamond in shape of described first pad, second pad, the 3rd pad and the 4th pad.

9. liquid crystal display module according to claim 1 is characterized in that: further comprise the display panels and the module backlight that are superimposed with each other and are provided with, described flexible PCB electrically connects described display panels and module backlight.

10. liquid crystal display module according to claim 9 is characterized in that: described display panels is that catercorner length is 3.0 inches or less than the relatively nervous liquid crystal display module in 3.0 inches element region space.