PRESSING-DETECTION DEVICE AND TOUCH PANEL

WIPO Patent Application WO/2014/185530

A1

The present invention provides a pressing-detection device provided with a pressure-receiving member having a contact surface that is touched by a pressure-application means and has pressure applied thereto and a piezoelectric member that is disposed so as to oppose the pressure-receiving member and includes a polymeric piezoelectric material having a piezoelectric constant (d14) measured by a displacement method at 25°C of 1 pm/V or higher, wherein the ratio (IEb/IEa) of the product (IEb) of the second moment of area (Ib) and the Young's modulus (Eb) of the pressure-receiving member and the product (IEa) of the second moment of area (Ia) and the Young's modulus (Ea) of the piezolectric member is within the range of 102 to 1010.

JPS5825327	[Title of the device] A load measuring device of the pressurizing tool of the bonding device for semiconductor devices
JPH11271340	SCANNING TYPE PROBE MICROSCOPE WITH SCANNER DAMAGE PREVENTION MECHANISM
WO/2020/189413	PIEZOELECTRIC DEVICE AND METHOD FOR MANUFACTURING PIEZOELECTRIC DEVICE

YOSHIDA MITSUNOBU (JP)
TANIMOTO KAZUHIRO (JP)
NISHIKAWA SHIGEO (JP)

PCT/JP2014/063100

November 20, 2014

May 16, 2014

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MITSUI CHEMICALS INC (JP)
MURATA MANUFACTURING CO (JP)

G01L1/16; C08L67/04; G06F3/041; H01L41/113; H01L41/193

WO2013054918A1	2013-04-18
WO2010143528A1	2010-12-16
WO2011125408A1	2011-10-13
WO2012049969A1	2012-04-19
WO2011138903A1	2011-11-10

JPS6166967U	1986-05-08
JP2010211482A	2010-09-24
JPH01130215A	1989-05-23
JP2011043442A	2011-03-03
JP2008027016A	2008-02-07
JPS5996123A	1984-06-02
JPH0733861A	1995-02-03
US2668182A	1954-02-02
US4057357A	1977-11-08

See also references of EP 2998716A4

NAKAJIMA, Jun et al. (JP)
Nakajima 淳 (JP)

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