Title:
PRESSURE DETECTION DEVICE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/154285
Kind Code:
A1
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.
Inventors:
YAMAGUCHI YOSHIHIRO (JP)
Application Number:
PCT/JP2016/085269
Publication Date:
September 14, 2017
Filing Date:
November 29, 2016
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G01L1/16; G01L1/20; G06F3/03; G06F3/041; H01L41/113; H01L41/193
Domestic Patent References:
| WO2013111841A1 | 2013-08-01 |
Foreign References:
| JP2015097068A | 2015-05-21 | |||
| US20150226618A1 | 2015-08-13 | |||
| US4555953A | 1985-12-03 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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