| 摘要 |
<p>One embodiment of the present invention relates to a key input device using a piezoelectric sensor device. The present invention is to provide a key input device which is thin and lightweight and effectively delivers a touching sense to a user. To this end, the key input device comprises: a key cap having a press surface pressed by a user; a piezoelectric sensor unit arranged in a region corresponding to the press surface; a vibration unit which is formed on the edge of the piezoelectric sensor unit and has at least one curved region; and a control circuit unit which vibrates the vibration unit when a pressure is detected by the piezoelectric sensor unit. In addition, a flexible member is installed between the key cap and the piezoelectric sensor unit, and a piezoelectric guide unit covering the piezoelectric sensor unit is provided between the flexible member and the piezoelectric sensor unit.</p> |
