Touch panel
AssigneeMurata Manufacturing Co., Ltd.
InventorsMasamichi Ando, Kenichi Mori
Life of this patent
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Abstract
A touch panel that includes a plate member which includes a first principal surface and a second principal surface opposing each other, and is constructed so as to be distorted in response to a force applied to the first principal surface; a main functional unit having piezoelectric voltage detection electrodes disposed on opposed sides of a piezoelectric film and which detect a piezoelectric voltage corresponding to a distortion amount of the piezoelectric film; and an adhesive layer which adheres the plate member and the main functional unit, the adhesive layer being divided into a plurality of areas, and at least two areas have different moduli.
Claims17
A touch panel comprising:
- a plate member which includes a first principal surface and a second principal surface opposing each other, and is constructed so as to be distorted in response to a force applied to the first principal surface;
- a pressing force detecting sensor which includes:
- a piezoelectric film having a third principal surface and a fourth principal surface opposing each other;
- a first set of piezoelectric voltage detection electrodes disposed at a side of the third principal surface of the piezoelectric film;
- and
- a second set of piezoelectric voltage detection electrodes disposed at a side of the fourth principal surface of the piezoelectric film,
- the first set and second set of piezoelectric voltage detection electrodes detecting a piezoelectric voltage corresponding to a distortion amount of the piezoelectric film;
- and
- an adhesive layer between the second principal surface of the plate member and the third principal surface of the piezoelectric film and which adheres the plate member to the pressing force detecting sensor, and wherein the adhesive layer including a plurality of areas along a plane parallel to the third principal surface of the piezoelectric film, and at least two areas of the plurality of areas have different moduli.
Dependencies are inferred from the claim text.