| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a signal processing circuit for an electrostatic capacity type touch panel which is switchable between a differential input mode and a single input mode. <P>SOLUTION: The signal processing circuit includes a first sensor circuit for selecting first and second sensing lines from Y sensing lines YL1-YL4 and detecting a difference in capacity value between a first electrostatic capacity C1 to be generated between the first sensing line and a Y driving line DRYL and a second electrostatic capacity C2 to be generated between the second sensing line and the Y driving line DRYL, a single input type second sensor circuit for selecting the first sensing line from the Y sensing lines YL1-YL4 and detecting the change in capacity value of the first electrostatic capacity C1 to be generated between the first sensing line and the Y driving line DRYL, and a switch control circuit 11 for controlling switching so as to operate the first or second sensor circuit. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
