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1. (WO2017154285) PRESSURE DETECTION DEVICE AND ELECTRONIC DEVICE

Pub. No.:    WO/2017/154285    International Application No.:    PCT/JP2016/085269
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Nov 30 00:59:59 CET 2016
IPC: G01L 1/16
G01L 1/20
G06F 3/03
G06F 3/041
H01L 41/113
H01L 41/193
Applicants: MURATA MANUFACTURING CO., LTD.
株式会社村田製作所
Inventors: YAMAGUCHI Yoshihiro
山口 喜弘
Title: PRESSURE DETECTION DEVICE AND ELECTRONIC DEVICE
Abstract:
Provided are a pressure detection device and electronic device capable of appropriately correcting an integrated value at any time. An electronic writing instrument (10) is provided with a housing (101), an operation unit (12), and a pressure detection device (100). The pressure detection device (100) is provided with an electrode (25), a piezoelectric film (21), an electrode (24), a substrate (90), an electrode (125), a strain-sensitive resistance element (41), an electrode (124), a substrate (26), a ground electrode (126), and a circuit (110) including a detection unit (30). When an operation surface (12A) is displaced by pressure from an operator or the release thereof, the resistance value of the strain-sensitive resistance element (41) changes. As a result, the output of the strain-sensitive resistance element (41) corresponds to the amount of displacement of the operation surface (12A). Thus, the detection unit (30) can correct the integrated value according to the output of the strain-sensitive resistance element (41). As a result, the pressure detection device (100) can appropriately correct the integrated value at any time.