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How LCD flat panel display driver circuit design is an important challenge to the current high-performance handheld design engineers face. This paper analyzes the LCD display panel classification and performance characteristics, introduced the LCD display key device design LDO, on-time 150μs only "LDO and white LED choice points, as well as design a charge pump LED driver circuit.


Internal color STN-LCD module structure shown in Figure 1, which is a piece of the upper polarizing plate, glass, liquid crystalline composition of the LCD, and the following is a white LED backlight, and further comprising a LCD driver IC to the LCD driver IC to provide a stable supply of low dropout regulator (LDO), two to eight white LED and LED driver boost regulator IC. 

After the shows, external power supply Vcc through LDO buck regulator circuit structure 2 color STN-LCD module is shown, the LCD driver IC as S6B33BOA operating voltage, color STN-LCD driver LCD display graphics and text; external power supply Vcc after the charge pump boost regulator, the white LED as NACW215/NSCW335 provide constant voltage, constant current power supply, LED white light by reflection backlight, so the LCD is fully manifested 65K colors, LED brightness color LCD beautiful direct impact degree。

How LCD flat panel display driver circuit design is an important challenge to the current high-performance handheld design engineers face. This paper analyzes the LCD display panel classification and performance characteristics, introduced the LCD display key device design LDO, on-time 150μs only "LDO and white LED choice points, as well as design a charge pump LED driver circuit.


Internal color STN-LCD module structure shown in Figure 1, which is a piece of the upper polarizing plate, glass, liquid crystalline composition of the LCD, and the following is a white LED backlight, and further comprising a LCD driver IC to the LCD driver IC to provide a stable supply of low dropout regulator (LDO), two to eight white LED and LED driver boost regulator IC.