Method of manufacturing touch sensor with switch tape strips
First Claim
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1. A method of manufacturing a touch sensor, comprising:
- providing a substrate having a resistive touch region;
providing a tape strip with a plurality of devices, each of the devices having first and second terminals and being configured to allow electrical current conduction from the first terminal to the second terminal in a first state, and prevent electrical current conduction from the second terminal to the first terminal in a second state; and
securing the tape strip along an edge of the resistive touch region, wherein one of the first and second terminals of the devices are in electrical contact with the resistive touch region.
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Abstract
The present invention is directed to touch sensors with arrays of switches (e.g., diodes or transistors) that can be used to selectively apply voltage gradients across a resistive touch regions of the touch sensor substrate. Touches on the touch sensor can then be sensed by measuring the voltage at the touch location on the resistive touch region. The switch arrays take the form of strips of switches that can be cut from a prefabricated reel or a sheet and applied to the touchscreen substrate.
46 Citations
26 Claims
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1. A method of manufacturing a touch sensor, comprising:
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providing a substrate having a resistive touch region;
providing a tape strip with a plurality of devices, each of the devices having first and second terminals and being configured to allow electrical current conduction from the first terminal to the second terminal in a first state, and prevent electrical current conduction from the second terminal to the first terminal in a second state; and
securing the tape strip along an edge of the resistive touch region, wherein one of the first and second terminals of the devices are in electrical contact with the resistive touch region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of manufacturing a touch sensor, comprising:
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providing a substrate having a resistive touch region with first and second oppositely disposed edges and third and fourth oppositely disposed edges;
providing four tape strips, each with a plurality of devices, each of the devices having first and second terminals and being configured to allow electrical current conduction from the first terminal to the second terminal when in a first state, and prevent electrical current conduction from the second terminal to the first terminal when in a second state;
securing two of the tape strips along the respective first and third edges of the resistive touch region, wherein the second terminals of the devices of the two tape strips are in electrical contact with the resistive touch region; and
securing the other two of the tape strips along the respective second and fourth edges of the resistive touch region, wherein the first terminals of the devices of the other two tape strips are in electrical contact with the resistive touch region. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. Reversible diode tape, comprising:
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a first electrically insulative layer;
a layer of spaced apart anodes disposed on the first electrically insulative layer;
a p-type semiconductor layer disposed on the anode layer;
an n-type semiconductor layer disposed on the p-type semiconductor layer;
a layer of spaced apart cathodes disposed on the n-type semiconductor layer, wherein the cathodes are substantially aligned with the anodes to discretely form diodes; and
a second electrically insulative layer disposed on the cathode layer. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification