| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrostatic capacitive touch sensor apparatus which improves the shield effect with respect to external electrical noise, without increasing the number of circuit means for supplying signals to a shield electrode, by simplifying a structure of the shield electrode in the touch switch apparatus comprising a number of operation switches. <P>SOLUTION: An electrostatic capacitive touch sensor apparatus includes: at least two or more touch detection electrodes 41 whose electrostatic capacitance value is changed; one high frequency power source 100 for applying a high frequency signal to the touch detection electrodes 41 via a predetermined impedance element; a connection pattern 32 connecting the touch detection electrodes 41 and the impedance element; a shield electrode 38 enclosing the touch detection electrodes 41 and the connection pattern 32; and one shield signal generating circuit 300 for applying a shield signal to the shield electrode 38 with the same phase and the same amplitude as those of the high frequency power source 100. <P>COPYRIGHT: (C)2010,JPO&INPIT |
