Touch screen stack-ups
First Claim
1. A multi-touch sensor panel, comprising:
- a first subassembly having a front side capable of being touched, and a back side opposite the front side;
a plurality of first traces of a first substantially transparent conductive material formed on the back side of the first subassembly;
a plurality of second traces of a second substantially transparent conductive material;
a second subassembly different from the first subassembly, the second subassembly having a front side bonded to the first subassembly and disposed between the first traces and the second traces such that the plurality of second traces are formed on a back side of the second subassembly; and
an adhesive provided to bond the first subassembly to the second subassembly; and
wherein the plurality of second and the plurality of first traces are oriented to cross over each other at crossover locations separated by the dielectric material, the crossover locations forming mutual capacitance sensors for detecting one or more touches on the front side of the first subassembly.
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Accused Products
Abstract
A multi-touch sensor panel is disclosed that can include a glass subassembly having a plurality of column traces of substantially transparent conductive material that can be formed on the back side, wherein the glass subassembly can also act as a cover that can be touched on the front side. Row traces of the same or different substantially transparent conductive material can then be located near the column traces, and a layer of dielectric material can be coupled between the column traces and the row traces. The row and column traces can be oriented to cross over each other at crossover locations separated by the dielectric material, and the crossover locations can form mutual capacitance sensors for detecting one or more touches on the front side of the glass subassembly.
717 Citations
18 Claims
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1. A multi-touch sensor panel, comprising:
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a first subassembly having a front side capable of being touched, and a back side opposite the front side; a plurality of first traces of a first substantially transparent conductive material formed on the back side of the first subassembly; a plurality of second traces of a second substantially transparent conductive material; a second subassembly different from the first subassembly, the second subassembly having a front side bonded to the first subassembly and disposed between the first traces and the second traces such that the plurality of second traces are formed on a back side of the second subassembly; and an adhesive provided to bond the first subassembly to the second subassembly; and wherein the plurality of second and the plurality of first traces are oriented to cross over each other at crossover locations separated by the dielectric material, the crossover locations forming mutual capacitance sensors for detecting one or more touches on the front side of the first subassembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A space-efficient touch sensor panel, comprising:
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a cover having a front side capable of being touched, and a back side with a plurality of first traces of a first substantially transparent conductive material formed thereon; and a polyethylene terephthalate (PET) substrate having a top side bonded to the back side of the cover and a bottom side with a plurality of second traces of a second substantially transparent conductive material formed thereon; wherein the plurality of first traces and the plurality of second traces are oriented to cross over each other at crossover locations separated by the PET substrate, the crossover locations forming mutual capacitance sensors for detecting one or more touches on the front side of the first subassembly. - View Dependent Claims (12, 13)
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14. A method of forming a space-efficient touch sensor panel, comprising:
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forming a plurality of first traces of a first substantially transparent conductive material on a back side of a first subassembly having a front side capable of being touched; forming a plurality of second traces of a second substantially transpatent conductive material on a back side of a second subassembly; bonding a front side of the second subassembly to the first subassembly such that the second subassembly is disposed between the plurality of first traces and the plurality of second traces; and orienting the plurality of first traces and the plurality of second traces to cross over each other at crossover locations separated by the second subassembly, the crossover locations forming mutual capacitance sensors for detecting one or more touches on the front side of the first subassembly. - View Dependent Claims (15, 16, 17, 18)
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Specification