PRESS SENSOR AND ELECTRONIC DEVICE
First Claim
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1. A press sensor comprising:
- a frame body defining a polygonal shaped opening;
a plate covering the polygonal shaped opening; and
a uniaxial stretched piezoelectric film having electrodes on opposed principal surfaces thereof adhered to the plate,wherein a first distance of a first virtual line passing a center point of the polygonal shape and extending at an angle of 45±
10 degrees with respect to a uniaxial stretch direction of the piezoelectric film, and a second distance of a second virtual line passing the center point and extending at an angle of −
45±
10 degrees with respect to the uniaxial stretch direction are different.
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Abstract
A touch panel that includes a housing defining an opening and a piezoelectric film covering the opening. The opening has a shape whose lengths in an X direction and a Y direction are different. The piezoelectric film is stretched in a uniaxial direction, and is aligned such that the uniaxial direction forms an angle of 45 degrees with respect to the X direction and the Y direction.
13 Citations
11 Claims
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1. A press sensor comprising:
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a frame body defining a polygonal shaped opening; a plate covering the polygonal shaped opening; and a uniaxial stretched piezoelectric film having electrodes on opposed principal surfaces thereof adhered to the plate, wherein a first distance of a first virtual line passing a center point of the polygonal shape and extending at an angle of 45±
10 degrees with respect to a uniaxial stretch direction of the piezoelectric film, and a second distance of a second virtual line passing the center point and extending at an angle of −
45±
10 degrees with respect to the uniaxial stretch direction are different. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A press sensor comprising:
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a frame body defining an elliptical opening; a plate covering the elliptical opening; and a uniaxially stretched piezoelectric film having electrodes on opposed principal surfaces thereof adhered to the plate such that a uniaxial stretch direction of the piezoelectric film forms an angle of 45±
10 degrees with respect to a long axis of the elliptical opening. - View Dependent Claims (10, 11)
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Specification