Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2007-06-26
2007-06-26
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C345S174000, C345S179000, C178S018010, C178S018030, C178S018060, C178S020010, C341S022000, C341S033000
Reexamination Certificate
active
10318266
ABSTRACT:
An apparatus and a method of driving a touch panel that increases an analog-digital converting range includes a first resistive layer having first and second electrodes formed facing each other along opposing edges of the first resistive layer in a first direction, and a second resistive layer having third and fourth electrodes formed facing each other along opposing edges of the second resistive layer in a second direction. The apparatus also includes a high potential controller for selectively connecting one of the first and third electrodes to a high potential voltage supplied from a high potential voltage source and a low potential controller for selectively connecting one of the second and fourth electrodes to a low potential voltage. Further, a variable resistor is employed for reducing a voltage of the high potential voltage between the high potential controller and the high potential power voltage source.
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Hjerpe Richard
LG.Philips LCD Co. , Ltd.
McKenna Long & Aldridge LLP
Shapiro Leonid
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