Liquid crystal panel device having a touch panel and method...

Details Liquid crystal panel device having a touch panel and method... Liquid crystal panel device having a touch panel and method...

2006-05-30

2006-05-30

Lefkowitz, Sumati (Department: 2675)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C178S018010, C178S018020

Reexamination Certificate

active

07053886

ABSTRACT:
A liquid crystal panel device having a touch panel, includes a liquid crystal panel, a touch panel positioned on the liquid crystal panel, a signal line having one end connected to the liquid crystal panel, and a touch controller for receiving analog signals generated by contacting the touch panel to determine X/Y coordinates, wherein the touch controller detects rising and falling of a liquid crystal driving voltage transmitted from the signal line.

REFERENCES:
patent: 6236386 (2001-05-01), Watanabe
patent: 6624835 (2003-09-01), Willig

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