A new crosstalk compensation method in line inversion TFT-LCD´s

Author

Jeong, Yun-Cheol ; Park, Chong-Cheol ; Kim, Lee-Sup

Author_Institution

Dept. of Electr. Eng., Korea Advanced Inst. of Sci. & Technol., Taejon, South Korea

Volume

44

Issue

6

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

552

Lastpage

555

Abstract

This brief presents a novel method to compensate a common electrode signal distortion caused by capacitive coupling between the data-lines and a common sheet electrode through a parasitic capacitor in TFT-LCD´s. We designed a compensation circuit whose role is to give a negative feedback to the common electrode by detection of the amount of distortion and generation of the dependent voltage source to cancel off the distortion. By experiment, we found that the newly designed compensation circuit greatly reduced the distortion caused by crosstalk in large size line inversion TFT-LCD´s

Keywords

compensation; crosstalk; electric distortion; feedback; liquid crystal displays; thin film transistors; capacitive coupling; common electrode signal distortion; common sheet electrode; crosstalk compensation method; dependent voltage source; line inversion TFT-LCD; negative feedback; parasitic capacitor; Capacitors; Coupling circuits; Crosstalk; Degradation; Displays; Distortion; Electrodes; Feedback circuits; Negative feedback; Voltage;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.586029

Filename

586029