Title :
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
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 γ1.0, γ1.8, γ2.2, and γ2.5 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;
Conference_Titel :
Solid State Circuits Conference (A-SSCC), 2011 IEEE Asian
Conference_Location :
Jeju
Print_ISBN :
978-1-4577-1784-0
DOI :
10.1109/ASSCC.2011.6123583
