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

fYear

2011

fDate

15-18 May 2011

Firstpage

2007

Lastpage

2010

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2011 IEEE International Symposium on

Conference_Location

Rio de Janeiro

ISSN

0271-4302

Print_ISBN

978-1-4244-9473-6

Electronic_ISBN

0271-4302

Type

conf

DOI

10.1109/ISCAS.2011.5937989

Filename

5937989