Segement lcd display module & Graphic lcd display Module Difference

Liquid crystal module is a relatively perfect module, which can directly add power to drive the display pattern. Liquid crystal module includes PCB, backlight and liquid crystal screen.

Because there are many display points on the graphic monochrome screen and the number of pins are a lot, there are generally too many pins for clamping pins, which will affect the power and increase the cost. Generally, we will consider using conductive adhesive strip to drive and iron frame to fix it.

Graphic monochrome screen is divided into COB and COG. COB refers to the control of the structure of IC on the PCB board, while COG means that IC is directly made on the glass. Such glass steps should be about 7MM, and FPC connection is generally required, so the cost is relatively higher.

Graphic screen backlight is also divided into straight backlit with framework is backlit, general COG products also has asked for the thickness of the module, and is the LCD screen with FPC, this time we need to make it with boxes of the backlight, LCD screen directly fixed inside the box glue, backlight and LCD screen looks is a whole, this kind of structure don’t need to add the iron box, but the backlight prices are relatively high.COB products are generally fixed with iron frame, backlight is usually made of straight plate, without structure.This kind of backlight need not open mold cost is relatively low.

Segment screen module compared to graphic screen module is relatively simple, segment? screen generally according to the number of pen segment to determine whether to do PIN clip or do iron frame.Because too many pins will affect the unit price, the cost can be reduced by connecting with conductive tape.The conductive strip connection must be fixed with an iron frame.Therefore, if the pattern of the segment screen is more complex, iron frame will be used; if the pattern is less simple, PIN PIN will be directly fixed on the PCB board.The backlight of paragraph code screen is normally straight plate guide plate adds film paper to add toothpick board.