| 摘要 |
PROBLEM TO BE SOLVED: To provide a static capacitance type touch panel that detects the input operation position of an ordinary input operation quickly with high accuracy, and when a multi-touch operation is detected, switches to an input operation of mutual capacitance type which is free of the problem of ghost occurrence before an input operation medium touches an input operation surface.SOLUTION: For an ordinary input operation, a first detection circuit is actuated, and the distance d between a direct detection electrode and an input operation medium is found from a reception level Vi of a first AC detection signal appearing at a detection electrode, to detect an input operation position. When a multi-touch operation is detected by the first detection circuit, a second detection circuit of mutual capacitance type is actuated to detect the input operation position, so that each input operation position of the multi-touch operation can be detected without the problem of ghost occurrence.SELECTED DRAWING: Figure 1 |
