Touch panel having reduced number of interconnects and touch input/output apparatus having the same
First Claim
1. A touch panel comprising:
- a first substrate comprising a plurality of first touch electrodes formed on a first base substrate, the first touch electrodes each having a first width, where the first touch electrodes are elongated along a first direction and arranged in parallel one next to the other so as to thereby be distributed along a second direction crossing the first direction; and
a second substrate comprising a plurality of second touch electrodes formed on a second base substrate that is in spaced apart facing relationship with the first base substrate, where the second touch electrodes each have a second width narrower than the first width, and where the second touch electrodes are elongated primarily along the second direction and arranged in parallel one next to the other so as to thereby be distributed along the first direction, the respective narrower second widths of the respective second touch electrodes allowing development in each of the second touch electrodes of a respective and detectable plurality of different voltages between opposed terminal ends of the respective and elongated second electrode;
a plurality of first wirings each respectively connected to only a first among respective first and second terminal ends of a respective one of the first touch electrodes; and
respective pairs of second wirings, each pair having two wires that are respectively connected to the opposed terminal ends of a respective one of the narrower and elongated second electrodes.
2 Assignments
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Accused Products
Abstract
A touch panel includes first and second normally spaced apart substrates. The first substrate includes first spaced apart touch electrodes extended in a first direction and each having a first width (W1). The second substrate includes second spaced apart touch electrodes extended in a different second direction and each having a second width (W2) which is substantially narrower than the first width. One of the substrates can be flexed so that momentary shorting contact is established between corresponding first and second touch electrodes at positions where pressing touch is provided. A combination of interconnect wirings and interrogation circuits are provided for automatically determining where and when the temporary shorting contacts were made, even if plural ones are simultaneously made. The disclosed embodiments include ones where the number of interconnect wirings are reduced.
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Citations
21 Claims
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1. A touch panel comprising:
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a first substrate comprising a plurality of first touch electrodes formed on a first base substrate, the first touch electrodes each having a first width, where the first touch electrodes are elongated along a first direction and arranged in parallel one next to the other so as to thereby be distributed along a second direction crossing the first direction; and a second substrate comprising a plurality of second touch electrodes formed on a second base substrate that is in spaced apart facing relationship with the first base substrate, where the second touch electrodes each have a second width narrower than the first width, and where the second touch electrodes are elongated primarily along the second direction and arranged in parallel one next to the other so as to thereby be distributed along the first direction, the respective narrower second widths of the respective second touch electrodes allowing development in each of the second touch electrodes of a respective and detectable plurality of different voltages between opposed terminal ends of the respective and elongated second electrode; a plurality of first wirings each respectively connected to only a first among respective first and second terminal ends of a respective one of the first touch electrodes; and respective pairs of second wirings, each pair having two wires that are respectively connected to the opposed terminal ends of a respective one of the narrower and elongated second electrodes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A touch input/output apparatus comprising:
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a touch panel assembly comprising a touch panel, the touch panel comprising; a first substrate comprising a plurality of first touch electrodes formed on a first base substrate, the first touch electrodes each having a first width (W1) and being elongated along a first direction, the first touch electrodes being arranged one after the other in a different second direction; and a second substrate comprising a plurality of second touch electrodes formed on a second base substrate facing the first base substrate, the second touch electrodes each having a second width (W2) narrower than the first width and being elongated primarily along the second direction, the second electrodes being arranged one after the other in the first direction, the respective narrower second widths (W2) of the respective second touch electrodes allowing development in each of the second touch electrodes of a respective and detectable plurality of different voltages between opposed terminal ends of the respective and elongated second electrode; and a touch position controller operatively coupled to the first and second substrates for determining one or more touch positions corresponding to touchings on the panel that cause one or more of the first touch electrodes to come into shorting contact at the touch positions with a corresponding one or more of the second touch electrodes, the touch position controller being responsive to a developed voltage developed as part of said respective and detectable plurality of different voltages that can be developed along a contacted one of the plural second touch electrodes. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification