Press detecting sensor
AssigneeMurata Manufacturing Co., Ltd.
InventorHideki Kawamura
Life of this patent
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Abstract
A press detecting sensor that includes an operation receiving member and a piezoelectric sensor. The operation receiving member is a multilayer rigid plate including a cover glass, a touch sensor and a display panel fixed via first bonding agents. The piezoelectric sensor includes a piezoelectric film, a first detecting member on a surface at a side of the operation receiving member of the piezoelectric film, and a second detecting member on a surface at a side opposite to the operation receiving member. The first detecting member is bonded to the operation receiving member by an adhesive member, and is bonded to the piezoelectric film by a second bonding agent.
Claims9
A press detecting sensor comprising:
- an operation receiving member having a plurality of plates laminated and bonded together with a first bonding agent, the operation receiving member having a first principal surface that is orthogonal to a laminating direction and a second principal surface opposite the first principal surface;
- a piezoelectric sensor disposed at a side of the second principal surface of the operation receiving member, and positioned such that a stress from the operation receiving member is transmitted to the piezoelectric sensor, wherein
- the piezoelectric sensor includes:
- a piezoelectric film having opposed first and second principal surfaces;
- a first detection electrode on the first principal surface of the piezoelectric film;
- a second detection electrode on the second principal surface of the piezoelectric film;
- and
- of the first and second detection electrodes, the detection electrode at a side of the operation receiving member is bonded to the piezoelectric film by a second bonding agent;
- and
- an adhesive member which adheres the operation receiving member and the piezoelectric sensor to each other, wherein an elastic modulus of the adhesive member is higher than that of an elastic modulus of the first bonding agent and the second bonding agent.
Dependencies are inferred from the claim text.