Touch input device that detects a touch position and a pressing input
Abstract:
A touch input device includes a touch panel, a press detection signal generating unit and a touch detection signal generating unit. The touch panel is formed by laminating a piezoelectric sensor and a capacitive sensor. The piezoelectric sensor is connected to the press detection signal generating unit, and the capacitive sensor is connected to the touch detection signal generating unit. The piezoelectric sensor includes a piezoelectric film, and first and second press detecting conductors disposed with the piezoelectric film sandwiched therebetween. The piezoelectric film is disposed such that a polarity of electric charges produced by a press in the piezoelectric film, and a polarity of excited electric charges produced in the piezoelectric film when the capacitive sensor detects a touch become reverse polarities.
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