Method for driving in-plane switching mode liquid crystal...

Details Method for driving in-plane switching mode liquid crystal... Method for driving in-plane switching mode liquid crystal...

2004-06-30

2008-10-28

Awad, Amr (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S209000

Reexamination Certificate

active

07443372

ABSTRACT:
A method for driving an IPS mode LCD device prevents leakage current by swing of a common voltage. The IPS mode LCD device includes multiple gate and data lines crossing each other to define a plurality of pixel regions, multiple thin film transistors (TFT) alternately positioned at lower and upper side pixel regions adjacent to the corresponding gate line, and multiple common lines in a zigzag type along the thin film transistors in the pixel regions. A common voltage is applied so that a first common voltage or a second common voltage is inversely applied to even numbered common lines or odd numbered common lines in one vertical period to be synchronized with a scanning signal supplied to the first gate line, and a gate Low voltage applied to each gate line is lower than a pixel voltage on transition of the common voltage from “High” to “Low”.

REFERENCES:
patent: 2001/0011981 (2001-08-01), Yamamoto et al.
patent: 2005/0001808 (2005-01-01), Lee

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