PRESSING SENSOR, TOUCH SENSOR, PRESSING SENSOR-EQUIPPED DISPLAY PANEL, AND TOUCH SENSOR-EQUIPPED DISPLAY PANEL

摘要

A pressing sensor-equipped display panel that includes a pressing sensor and a display panel. The pressing sensor is arranged between a protecting member which composes an operation surface and the display panel. The pressing sensor includes a piezoelectric film which is made of polylactic acid which is an organic piezoelectric material. Electrodes are formed on both principal surfaces of the piezoelectric film. At least one of the electrodes is made of a polythiophene material. Display image formation light which has been emitted from the display panel and been incident on the pressing sensor transmits through the piezoelectric film and the electrodes. In this regard, a variation of a transmittance of each wavelength of the piezoelectric film, and a variation of a transmittance of each wavelength of an electrode made of the polythiophene material cancel each other.

主权项

1. A pressing sensor comprising:
a translucent piezoelectric film made of an organic piezoelectric material; and first and second translucent electrodes on respective opposed principal surfaces of the piezoelectric film, wherein at least one of the first and second translucent electrodes is made of a polythiophene material.