THREE-DIMENSIONAL TOUCH SENSOR
First Claim
Patent Images
1. A three-dimensional touch sensor comprising:
- a two-dimensional capacitive touch sensor;
a first conductive layer and a second conductive layer both below the two-dimensional capacitive touch sensor; and
an elastic insulator sandwiched between the first and second conductive layers to establish a variable capacitor,wherein the elastic insulator deforms responsive to a pressing, and thus changes a distance between the first and second conductive layers, thereby causing a capacitance variation of the variable capacitor.
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Abstract
A three-dimensional touch sensor is constructed from a two-dimensional capacitive touch sensor in association with a conductive layer and an elastic insulator or with an insulation layer and an elastic conductor. When the three-dimensional touch sensor is touched, the two-dimensional capacitive touch sensor positions the touch point in a sensing plane, and the elastic insulator or the elastic conductor deforms responsive to the pressure and thus generates a capacitance variation, from which a sensing value in the perpendicular direction is derived related to the magnitude of the pressure.
68 Citations
21 Claims
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1. A three-dimensional touch sensor comprising:
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a two-dimensional capacitive touch sensor; a first conductive layer and a second conductive layer both below the two-dimensional capacitive touch sensor; and an elastic insulator sandwiched between the first and second conductive layers to establish a variable capacitor, wherein the elastic insulator deforms responsive to a pressing, and thus changes a distance between the first and second conductive layers, thereby causing a capacitance variation of the variable capacitor. - View Dependent Claims (2, 3)
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4. A three-dimensional touch sensor comprising:
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a two-dimensional capacitive touch sensor; a conductive layer below the two-dimensional capacitive touch sensor; an insulation layer below the conductive layer; and an elastic conductor below the insulation layer to establish a variable capacitor; wherein the elastic insulator deforms responsive to a pressing, and thus changes a contact area between itself and the insulation layer, thereby causing a capacitance variation of the variable capacitor. - View Dependent Claims (5, 6, 7)
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8. A three-dimensional touch sensor comprising:
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a two-dimensional capacitive touch sensor; an insulation layer below the two-dimensional capacitive touch sensor; and an elastic conductor below the insulation layer to establish a variable capacitor; wherein the elastic conductor deforms responsive to a pressing, and thus changes a contact area between itself and the insulation layer, thereby causing a capacitance variation of the variable capacitor. - View Dependent Claims (9, 10, 11)
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12. A three-dimensional touch sensor comprising:
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a two-dimensional capacitive touch sensor; an insulation layer on the two-dimensional capacitive touch sensor; and an elastic conductor on the insulation layer to establish a variable capacitor; wherein the elastic conductor deforms responsive to a pressing, and thus changes a contact area between itself and the insulation layer, thereby causing a capacitance variation of the variable capacitor. - View Dependent Claims (13, 14, 15)
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16. An application of a three-dimensional touch sensor constructed from a two-dimensional capacitive touch sensor in association with a conductive layer and an elastic insulator or with an insulation layer and an elastic conductor, the application comprising the steps of:
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defining a region on the two-dimensional capacitive touch sensor; positioning a touch point in a sensing plane by the two-dimensional capacitive touch sensor; generating a capacitance variation from a deformation of the elastic insulator or the elastic conductor responsive to a pressuring, and deriving a sensing value in a perpendicular direction from the capacitance variation that is related to a pressure of the pressing; and generating a corresponding command if the touch point is in the region and the sensing value is greater than a threshold. - View Dependent Claims (17)
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18. An application of a three-dimensional touch sensor constructed from a two-dimensional capacitive touch sensor in association with a conductive layer and an elastic insulator or with an insulation layer and an elastic conductor, the application comprising the steps of:
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defining an original point on the two-dimensional capacitive touch sensor; positioning a touch point in a sensing plane by the two-dimensional capacitive touch sensor; generating a capacitance variation from a deformation of the elastic insulator or the elastic conductor responsive to a pressuring, and deriving a sensing value in a perpendicular direction from the capacitance variation that is related to the pressure of the pressing; and defining a moving direction of a controlled subject with a vector from the original point to the touch point, and defining a moving parameter of the controlled subject with the sensing value. - View Dependent Claims (19, 20, 21)
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Specification