Touch sensor effective area enhancement
First Claim
Patent Images
1. A touch sensor device, the touch sensor device comprising:
- a set of sensing electrodes; and
an edge electrode set, the edge electrode set consisting of between one to three edge electrodes inclusive, the edge electrode set substantially surrounding a perimeter of the set of sensing electrodes, wherein the set of sensing electrodes is adapted to detect object position proximate the set of sensing electrodes in two dimensions, and wherein the edge electrode set is adapted to detect object position proximate the perimeter of the set of sensing electrodes.
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Abstract
A touch sensor device is provided that that uses an edge electrode set to provide an improved effective area. Specifically, the touch sensor device includes an edge electrode set that together substantially surround a perimeter of sensing. The edge electrode set increases the effective sensing area of the touch sensor device, and thus can be used to improve the space efficiency of the touch sensor device.
153 Citations
23 Claims
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1. A touch sensor device, the touch sensor device comprising:
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a set of sensing electrodes; and an edge electrode set, the edge electrode set consisting of between one to three edge electrodes inclusive, the edge electrode set substantially surrounding a perimeter of the set of sensing electrodes, wherein the set of sensing electrodes is adapted to detect object position proximate the set of sensing electrodes in two dimensions, and wherein the edge electrode set is adapted to detect object position proximate the perimeter of the set of sensing electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A touch sensor device, the touch sensor device comprising:
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a contiguous set of sensing electrodes, the contiguous set of sensing electrodes adapted to capacitively detect object position proximate the contiguous set of sensing electrodes in both coordinates of a two-dimensional space, the electrodes of the contiguous set of sensing electrodes configured together to define a region having a perimeter; and an edge electrode set, the edge electrode set consisting of between one and three edge electrodes inclusive that substantially surround the perimeter, wherein the edge electrode set is adapted to capacitively detect object position proximate the perimeter to increase an effective sensing area of the touch sensor device. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A touch sensor device, the touch sensor device comprising:
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a set of sensing electrodes; and an edge electrode set, the edge electrode set consisting of at most two edge electrodes, the edge electrode set surrounding at least 75% of a perimeter of the set of sensing electrodes, wherein the set of sensing electrodes is adapted to detect object position proximate the set of sensing electrodes in two dimensions, and wherein the edge electrode set is adapted to detect object position proximate the perimeter of the set of sensing electrodes.
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19. A touch sensor device, the touch sensor device comprising:
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a set of sensing electrodes; and an edge electrode, the edge electrode surrounding at least 50% of a perimeter of the set of sensing electrodes, wherein the set of sensing electrodes is adapted to detect object position proximate the set of sensing electrodes in two dimensions, and wherein the edge electrode is adapted to detect object position proximate the perimeter of the set of sensing electrodes.
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20. A method of detecting object position proximate a set of sensing electrodes, the method comprising:
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providing an edge electrode set that substantially surrounds a perimeter of the set of sensing electrodes, the edge electrode set consisting of one to three edge electrodes; and using the edge electrode set to increase an effective sensing area of a touch sensor array device by detecting object proximity along the perimeter of the set of sensing electrodes. - View Dependent Claims (21, 22, 23)
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Specification