Title :
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
fDate :
6/1/1997 12:00:00 AM
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;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
