Patterned resistive touch panel
First Claim
1. A touch panel comprising:
- a first substrate, anda second substrate spaced from the first substrate leaving a gap between the first substrate and the second substrate, wherein the second substrate comprises a resistive element arranged in a meandering shape in an area, such that when a touch event occurs on the touch panel causing a contact between the first substrate and the second substrate at a contact point on the resistive element, the contact point is identifiable by two-dimensional coordinates of a location in the area.
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Accused Products
Abstract
A touch panel having a first panel and a second panel, wherein the first panel has a voltage providing area connected to a power source and the second panel has a patterned resistive element facing the voltage providing area so that when a touch event on the touch panel occurs, the first panel is caused to make contact with and provide a voltage to the second panel at one or more contact points on the resistive element. By measuring the voltage on one or both ends of the resistive element, it is possible to determine the two-dimensional coordinates of each contact point. The touch panel can have one or more resistive elements located at different touch areas for sensing one or more touch points in a touch event.
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Citations
22 Claims
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1. A touch panel comprising:
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a first substrate, and a second substrate spaced from the first substrate leaving a gap between the first substrate and the second substrate, wherein the second substrate comprises a resistive element arranged in a meandering shape in an area, such that when a touch event occurs on the touch panel causing a contact between the first substrate and the second substrate at a contact point on the resistive element, the contact point is identifiable by two-dimensional coordinates of a location in the area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17)
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11. A method for touch sensing on a touch panel comprising a first substrate and a second substrate spaced from the first substrate leaving a gap therebetween, said method comprising:
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providing a resistive element of a meandering shape in an area on the second substrate, the resistive element has a first element end and a second element end; connecting a power source to the first substrate, such that when a touch event occurs on the touch panel causing a contact between the first substrate and the second substrate at a contact point on the resistive element, the first substrate is configured to provide a reference voltage to the resistive element at the contact point; measuring a voltage value at the first end of the resistive element; and obtaining two-dimensional coordinates of the contact point at least based on the voltage value. - View Dependent Claims (12, 13)
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18. A touch panel module comprising:
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a first substrate configured for connection to a power source; a second substrate spaced from the first substrate leaving a gap between the first substrate and the second substrate, the second substrate comprising a resistive element having a first end and a second end; an electrical measurement device coupled to the first end and the second end, such that when a touch event occurs on the touch panel causing a contact between the first substrate and a second substrate at a contact point on the resistive element, the electrical measurement device receives at least one of a first signal from the first end and a second signal from the second end. - View Dependent Claims (19, 20, 21, 22)
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Specification