Title :
An area-efficient TFT-LCD column driver with DAC sharing technique
Author :
Lu, Chih-Wen ; Chen, Hung-Cheng ; Huang, Yen-Chung
Author_Institution :
Dept. of Eng. & Syst. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
This study proposes an area-efficient fully resistor digital-to-analog converter (R-DAC) based thin-film transistor liquid crystal display (TFT-LCD) column driver in which one positive polarity DAC and one negative polarity DAC are shared by four channels. An experimental prototype 8-bit column driver was implemented using 0.35-μm CMOS technology to verify the proposed driving scheme. The settling time is within 5 μs and the maximum DNL and INL are 0.68 LSB and 0.67 LSB, respectively. The average area per channel is 0.016 mm2. Compared with a conventional fully R-DAC based TFT-LCD column driver, the proposed driving scheme has an area saving of 29.6%.
Keywords :
CMOS integrated circuits; digital-analogue conversion; driver circuits; resistors; thin film transistors; CMOS technology; DAC sharing technique; area-efficient TFT-LCD column driver; area-efficient fully resistor digital-to-analog converter; negative polarity DAC; positive polarity DAC; size 0.35 mum; thin-film transistor liquid crystal display; time 5 mus; word length 8 bit; CMOS integrated circuits; CMOS technology; Capacitors; Driver circuits; Latches; Resistors; Thin film transistors;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937989
