Composition and Interface of lcd display Module

- Nov 25, 2019-

The LCD module, the lcd module, is an assembly for assembling a liquid crystal display device, a connecting member, a control and driving peripheral circuit, a pcb circuit board, a backlight, a structural member, and the like. 


LCM provides a standard lcd display driver interface (4 bits, 8 bits, vga and other different types). Users operate according to the interface requirements to control the correct display of lcd. 

OCMC2X16B-c1

LCM glass is a higher integration lcd product, for small size lcd display, lcm can be easily connected with various microcontrollers (such as single chip microcomputer). However, for large size or color lcd display, it generally takes up a considerable part of the resources of the control system or can not be controlled at all. For example, 320 × 240256 color lcm, is displayed in 20 fields per second (that is, 20 times a second full screen refresh display). 

OCM12232-3-c1 (1)

The amount of data transmitted in one second is as high as 320 × 240 × 8 × 20=11.71875mb or 1.465 mb. if the standard mcs-51 series single chip microcomputer is allowed to process it, suppose the movx instruction is reused to transmit the data continuously. Considering the address calculation time, at least the clock of 421.875mhz is needed to complete the transmission of data, which shows that the amount of data processed is huge.