Touch panel, and touch-type input apparatus and control method therefor

摘要

A touch panel capable of detecting a pen and a finger, capable of corresponding to multi-touch, capable of detecting pressing force, and capable of reducing the use amount of a transparent electrode as much as possible. The touch panel has a piezoelectric sheet of poly-L-lactic acid having a predetermined stretching axial direction, electrodes that are opposed to each other and formed on the piezoelectric sheet do not cover the entire surface of the piezoelectric sheet and are formed so that they are discretely distributed in plural positions. The piezoelectric sheet is brought into the condition that tension is imparted in directions not coincident with the stretching axial direction.

主权项

1. A touch panel comprising:
a piezoelectric sheet of poly-L-lactic acid having a stretching axis oriented in a predetermined direction and having first and second opposed surfaces; a plurality of first electrodes distributed discretely in plural positions on the first surface of said piezoelectric sheet; and a plurality of second electrodes distributed discretely in plural positions on the second surface of said piezoelectric sheet and respectively opposing the plurality of first electrodes so as to form a plurality of sets of opposed electrodes.