Title :
A 402-output TFT-LCD driver IC with power-controlling function by selecting number of colors
Author :
Itakura, Tetsuro ; Minamizaki, H. ; Saito, Takashi ; Kuroda, Tadashi
Author_Institution :
Corporate Res. & Dev. Center, Toshiba Corp., Japan
Abstract :
A 402-output TFT-LCD driver with a power-controlling function by selecting a number of colors to be displayed is described. Power-controlling is realized by turning on and off reference voltage buffers used in DACs to convert RGB digital signals. The buffers must drive 1 to 402 capacitive loads. A phase compensation using a zero formed with the capacitive loads is proposed for the buffers. The analog section consumes 529 μA, 182 μA, 112 μA for 262,144 colors, 4,096 colors, 512 colors, respectively.
Keywords :
CMOS integrated circuits; buffer circuits; colour displays; driver circuits; liquid crystal displays; mixed analogue-digital integrated circuits; 112 muA; 182 muA; 402-output TFT-LCD driver IC; 529 muA; CMOS process; DACs; RGB digital signal conversion; analog section power consumption; capacitive loads; color displays; phase compensation; power-controlling function; reference voltage buffers; zero; Analog circuits; Capacitance; Latches; Liquid crystal displays; Mobile handsets; Power dissipation; Research and development; Shift registers; Turning; Voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 2002. Proceedings of the IEEE 2002
Print_ISBN :
0-7803-7250-6
DOI :
10.1109/CICC.2002.1012808
