Multi-sensing method of capacitive touch panel

The invention provides a multi-sensing method of capacitive touch panel, which uses a capacitive sensing circuit to detect the voltage change of each electrode in the same electrode layer. If the location of voltage change for the electrode is detected, it measures, at the location of voltage change...

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Bibliographic Details
Main Authors CHEN, JIAN-TING, ZHAO, CHANG-BO, RUAN, JUN-YAO
Format Patent
LanguageChinese
English
Published 16.05.2010
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention provides a multi-sensing method of capacitive touch panel, which uses a capacitive sensing circuit to detect the voltage change of each electrode in the same electrode layer. If the location of voltage change for the electrode is detected, it measures, at the location of voltage change, the vertical capacitance formed by two electrodes interlaced with each other on different electrode layers respectively, and compares the measured vertical capacitance with the vertical capacitance value formed by the two interlaced electrode layer before they contact with each other. If the value is different, a real touch point is determined.
Bibliography:Application Number: TW200897143196