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Patent Searching and Data


Title:
PRESSURE DETECTING DEVICE AND INFORMATION INPUT DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/230236
Kind Code:
A1
Abstract:
[Problem] To improve the sensitivity of a pressure sensitive sensor provided in such a way as to handle the entire surface of a display unit of an information input device. [Solution] This pressure detecting device includes a pressure sensitive sensor 13 and a pressure calculating unit 61. The pressure sensitive sensor 13 includes: an upper substrate 31; a lower substrate 33; a pressure sensitive layer 35 which includes a pair of pressure sensitive portions 41, 42 positioned symmetrically with respect to the center of a flat surface, and which is formed on the surface of at least one of the upper substrate 31 and the lower substrate 33; a first resilient body 71 and a second resilient body 73 disposed in positions in which a pressing force acts; and a first electrode 37 and a second electrode 39 disposed sandwiching the pressure sensitive layer 35. The pressure calculating unit 61 executes: a step of using the pressure sensitive sensor 13 to detect a change in pressure for each pressure sensitive portion 41, 42; and a step of amplifying an output by adding together the change in pressure of one of the pair of pressure sensitive portions 41, 42 and the change in pressure of the other of the pair of pressure sensitive portions 41, 42, with the sign thereof reversed.

Inventors:
INOUE ATSUO (JP)
Application Number:
PCT/JP2018/018958
Publication Date:
December 20, 2018
Filing Date:
May 16, 2018
Export Citation:
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Assignee:
NISSHA CO LTD (JP)
International Classes:
G01L1/20; G01L1/14; G06F3/041
Domestic Patent References:
WO2016208560A12016-12-29
Foreign References:
JP2013113760A2013-06-10
JP2015035132A2015-02-19
JP2012177798A2012-09-13
JP2017083942A2017-05-18
US20170068376A12017-03-09
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