CN2658777Y

CN2658777Y - STN liquid crystal display module

Info

Publication number: CN2658777Y
Application number: CN 200320108414
Authority: CN
Inventors: 潘慧媛
Original assignee: GUANGDIAN LIQUID-CRYSTAL DISPLAY Co Ltd SHANGHAI
Current assignee: GUANGDIAN LIQUID-CRYSTAL DISPLAY Co Ltd SHANGHAI
Priority date: 2003-11-27
Filing date: 2003-11-27
Publication date: 2004-11-24
Anticipated expiration: 2013-11-27

Abstract

The utility model discloses a COG field of a STN LCD, in particular to an improvement of a (super twisted nematic) liquid crystal display module used for mobile phone to STN. STN liquid crystal display module comprises an ITO glass, a driver chip pressed down the glass, an ITO tracking circuit connected with the driver chip and an outer FPC mild circuit board. The utility model is characterized in that the driver chip is a SC4885 chip; VDD, VSS and VLCD connected with the chip and the outer ITO tracking circuit is a plurality of leading foots; SC4885 driving chip is adopted to realize the same driving ability and effect, and the using cost is relatively decresed; compared with the module, the utility model can not only ensure the functions and performance of the STN liquid crystal display module screen, the main component of the mobile phone, but also reduces the purchasing costs, thereby reducing the manufacturing costs of the mobile phone.

Description

The stn liquid crystal display module

Technical field

The utility model relates to the improvement of a kind of mobile phone with STN (supertwist is to row) LCD MODULE, belongs to the COG field of stn liquid crystal display device.

Background technology

At present, for STN (super-twist nematic) LCDs, its COG (chip is on glass) chip interconnection technique is than TCP (film carries chip), COF (chip is on the film) has cost advantage. and this just requires module manufacturer can adopt the COG technology in product design as far as possible, and the module that on function, can satisfy the demand, for the stn liquid crystal display module that adopts the COG packing forms, the price height of selected main material chip for driving also just becomes the key factor of decision cost of goods manifactured, and currently used chip for driving price is higher, thereby influence is at market competition advantage, and that existing chip for driving is walked the leading foot of line circuit is narrower, be single leading foot, resistance is bigger, and the path is longer.

The purpose of this utility model is in order to reduce the price of LCD MODULE, the chip for driving of a kind of SC4885 of employing to be provided, and the leading foot of walking line circuit improves.

For finishing above-mentioned purpose, the technical solution adopted in the utility model is: the stn liquid crystal display module, it comprises: ito glass, be pressed in driver chip on glass, the ITO that connects driver chip and outside FPC flexible circuit board walks line circuit, is characterized in, driver chip is the SC4885 chip, the ITO of connection chip and outside walks the VDD in the line circuit, and VSS, VLCD are a plurality of leading foots.

The beneficial effects of the utility model are: under the situation that reaches identical driving force and effect, adopt the SC4885 chip for driving, reduced the manufacturing cost of module production firm, by VDD in the ITO wires design, VSS, many leading foots of VLCD and width increase, thereby minimizing resistivity, shorten the path, for the user of module, the function and the performance of the mobile phone critical piece stn liquid crystal display module mobile phone screen that promptly can guarantee to be purchased have reduced its purchase cost again, thereby have reduced the manufacturing cost of mobile phone.

Description of drawings

Fig. 1 is a stn liquid crystal display module outside drawing;

Fig. 2 is the a-quadrant enlarged drawing of Fig. 1.

Embodiment

The utility model is described in detail in conjunction with the accompanying drawings.

Shown in Fig. 1-2, the stn liquid crystal display module, it comprises: ito glass 1, be pressed in driver chip on glass 2, the ITO that connects driver chip and outside FPC flexible circuit board walks line circuit 3, be characterized in that driver chip is SC4885, it is a plurality of leading foots that ITO walks VDD, the VSS, the VLCD that are equipped with in the line circuit 3.

By shown in Figure 2, walk the VDD of line circuit, the width on VSS, VLCD are drawn by multiway is 8-12mm.Being connected ITO with external hardware from chip for driving in the present embodiment and walking the line circuit 3, is unit with mm, and each pin widths is respectively: VDD:2.25, SDIN:0.47, DCB:0.69, SCEB:0.25, SCLK:0.85, VSS:2.5, VLCD:1.00, RESET-B:0.64.

Claims

1, a kind of stn liquid crystal display module, it comprises: ito glass, be pressed in driver chip on glass, the ITO that connects driver chip and outside FPC flexible circuit board walks line circuit, it is characterized in that driver chip is the SC4885 chip, the ITO of connection chip and outside walks the VDD in the line circuit, VSS, VLCD are a plurality of leading foots.

2, stn liquid crystal display module according to claim 1 is characterized in that, the described VDD that walks line circuit, and the width on VSS, VLCD are drawn by multiway is 8-12mm.

3. according to according to the described stn liquid crystal display module of claim 1, it is characterized in that described each pin widths of walking line circuit is respectively: VDD:2.25, SDIN:0.47, DCB:0.69, SCEB:0.25, SCLK:0.85, VSS:2.5, VLCD:1.0, RESET_B:0.64.