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US 8,823,675 B2Granted
Capacitive matrix touch sensor
AssigneeAtmel Corporation
InventorPeter Sleeman
Life of this patent
Estimating the term…
Abstract
A device includes a substrate, a top touch panel, and an electrode supported by the substrate including a conductive compressible material extending from the substrate to the top touch panel. Another electrode is supported by the substrate and arranged to form an electric field coupling with the electrode including the compressible material. A touch sensitive region is transferred from the substrate to the top touch panel by the compressible material.
Claims22
A device comprising:
- a substrate;
- a top touch panel;
- a first conductive compressible electrode supported by the substrate and extending from the substrate to the top touch panel;
- a second conductive compressible electrode supported by the substrate and extending from the substrate to the top touch panel;
- a third electrode connected to the first and second conductive compressible electrodes;
- a fourth electrode supported by the substrate and arranged to form an electric field coupling with the first conductive compressible electrode, wherein the first conductive compressible electrode and the fourth electrode are physically separated from each other such that an object touching the top touch panel proximate to the first conductive compressible electrode causes a change in capacitance between the first conductive compressible electrode and the fourth electrode;
- and
- a fifth electrode supported by the substrate and arranged to form an electric field coupling with the second conductive compressible electrode, wherein the second conductive compressible electrode and the fifth electrode are physically separated from each other such that an object touching the top touch panel proximate to the second conductive compressible electrode causes a change in capacitance between the second conductive compressible electrode and the fifth electrode.
5 more elements
A device comprising:
- a substrate;
- a top touch panel;
- a plurality of first electrodes supported by the substrate, each first electrode including an electrically conducting spring extending from the substrate to the top touch panel;
- a second electrode connected to each of the first electrodes;
- a plurality of third electrodes supported by the substrate, each third electrode including an electrically conducting spring extending from the substrate to the top touch panel;
- a fourth electrode connected to each of the third electrodes;
- a plurality of fifth electrodes supported by the substrate, each fifth electrode arranged to form an electric field coupling with a respective first electrode and a respective third electrode, wherein the respective first electrode and the fifth electrode are physically separated from each other such that an object touching the top touch panel adjacent to the respective first electrode causes a change in capacitance between the respective first electrode and the fifth electrode, and wherein the respective third electrode and the fifth electrode are physically separated from each other such that an object touching the top touch panel adjacent to the respective third electrode causes a change in capacitance between the respective third electrode and the fifth electrode.
4 more elements
A method comprising:
- forming a first and a second electrode supported on a substrate such that they form an electric field coupling, wherein the first electrode is formed of a first compressible conductive material;
- forming a third electrode supported on the substrate such that the second and third electrodes form an electric field coupling, wherein the third electrode is formed of a second compressible conductive material;
- compressing the first compressible conductive material with a top touch panel to form a first touch area on the top touch panel proximate a compressed region of the first compressible material in contact with the top touch panel, wherein the first and second electrodes are physically separated from each other such that an object touching the top touch panel causes a change in capacitance between the first electrode and the second electrode;
- and
- compressing the second compressible conductive material with a top touch panel to form a second touch area on the top touch panel proximate a compressed region of the second compressible material in contact with the top touch panel, wherein the second and third electrodes are physically separated from each other such that an object touching the top touch panel causes a change in capacitance between the third electrode and the second electrode.
2 more elements
Dependencies are inferred from the claim text.