TOUCH DETECTION DEVICE, DISPLAY DEVICE, AND TOUCH DETECTION METHOD
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United States of America Patent
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Issued Date -
May 8, 2014
app pub date -
Nov 4, 2013
filing date -
Nov 5, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A touch detection device includes a touch panel including a first electrode part arranged so as to extend in a first direction and a second electrode part arranged so as to extend in a second direction that is different from the first direction. The touch detection device also includes a pulse generating unit configured to output a pulse signal to the first electrode part, a resistance element arranged between an output terminal of the pulse generating unit and the first electrode part, and a touch detecting unit configured to detect whether the touch panel is touched or not based on a phase difference in a voltage signal of the second electrode part, which is generated in accordance with the pulse signal. The phase difference is based on whether the touch panel is touched or not.
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