Line inversion-based mobile TFT-LCD driver IC with accurate quadruple-gamma-curve correction

Author

Woo, Jae-Hyuck ; Lee, Jae-Goo ; Kim, In-Suk ; Jun, Young- Hyun ; Hwang, Gyoo-Cheol ; Lee, Myung-Hee ; Kong, Bai-Sun

Author_Institution

Semicond. Bus., Samsung Electron. Co. Ltd., Young-In, South Korea

fYear

2011

fDate

14-16 Nov. 2011

Firstpage

341

Lastpage

344

Abstract

Line inversion-based mobile TFT-LCD driver IC with novel quadruple-gamma-curve correction is presented. The driver IC allows for a cost-effective accurate curve correction for multiple gamma values of γ^1.0, γ^1.8, γ^2.2, and γ^2.5 by adopting novel voltage-symmetric gray curve synthesis and variable reference resistor-tap biasing schemes. A test chip in a 6 V/0.7-μm triple-well CMOS process indicated a gray voltage error of ±8 mV with gray-to-gray error difference under ±3 mV.

Keywords

CMOS integrated circuits; driver circuits; reference circuits; resistors; thin film transistors; gray-to-gray error difference; line inversion-based mobile TFT-LCD driver IC; quadruple-gamma-curve correction; size 0.7 mum; triple-well CMOS process; variable reference resistor-tap biasing schemes; voltage -3 V; voltage -8 V; voltage 3 V; voltage 6 V; voltage 8 V; voltage-symmetric gray curve synthesis; 1f noise; Generators; Image color analysis; Integrated circuits; Mobile communication; Thin film transistors; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Circuits Conference (A-SSCC), 2011 IEEE Asian

Conference_Location

Jeju

Print_ISBN

978-1-4577-1784-0

Type

conf

DOI

10.1109/ASSCC.2011.6123583

Filename

6123583