Interleaved electrodes for touch sensing
First Claim
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1. A capacitive touch sensing system, comprising:
- a touch surface; and
sets of substantially parallel electrodes arranged in relation to the touch surface, each electrode set comprising a primary electrode capable of producing greater capacitive coupling to a touch in proximity with the touch surface in relation to capacitive coupling of at least two sub-electrodes electrically connected to the primary electrode and disposed on either side of the primary electrode, the sub-electrodes of the electrode sets arranged in an interleaved pattern configured to increase an effective area of capacitive coupling associated with each electrode set.
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Abstract
A capacitive touch sensing system includes a touch surface and sets of substantially parallel electrodes arranged in relation to the touch surface. Each electrode set includes a primary electrode electrically connected to at least two sub-electrodes. The primary electrode is capable of producing greater capacitive coupling to a touch in proximity with the touch surface in relation to capacitive coupling of the at least two sub-electrodes. The sub-electrodes of the electrode sets are arranged in an interleaved pattern configured to increase an effective area of capacitive coupling associated with each electrode set.
300 Citations
41 Claims
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1. A capacitive touch sensing system, comprising:
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a touch surface; and
sets of substantially parallel electrodes arranged in relation to the touch surface, each electrode set comprising a primary electrode capable of producing greater capacitive coupling to a touch in proximity with the touch surface in relation to capacitive coupling of at least two sub-electrodes electrically connected to the primary electrode and disposed on either side of the primary electrode, the sub-electrodes of the electrode sets arranged in an interleaved pattern configured to increase an effective area of capacitive coupling associated with each electrode set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A capacitive touch sensing system, comprising:
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a touch surface; and
sets of electrically connected and substantially parallel electrodes arranged in relation to the touch surface, each set of electrodes including a primary electrode and at least two sub-electrodes disposed on either side of the primary electrode and having a smaller surface area than the primary electrode, wherein the sub-electrodes of the electrode sets are interleaved. - View Dependent Claims (24, 25, 26, 27)
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28. A touch sensing method, comprising:
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capacitively sensing a touch on a touch surface using a first set of electrodes, the first set of electrodes including electrically connected and substantially parallel first primary electrode and first sub-electrodes disposed on either side of the first primary electrode;
generating a first touch signal based on the touch sensed using the first electrode set;
capacitively sensing a touch on a touch surface using sets of electrodes adjacent to the first electrode set, each adjacent set of electrodes including electrically connected and substantially parallel adjacent primary electrode and adjacent sub-electrodes disposed on either side of the adjacent primary electrode, the adjacent sub-electrodes interleaved with the first sub-electrodes to increase an area of capacitive coupling of the first and adjacent electrode sets;
generating additional touch signals based on the touch sensed using the adjacent sets of electrodes; and
determining a location of the touch in proximity with the touch surface based on at least one of the first and the additional touch signals. - View Dependent Claims (29, 30, 31, 32)
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- 33. A method for making a touch sensor comprising disposing sets of electrodes on a substrate in accordance with an interleaved pattern configured to increase an effective area of capacitive coupling associated with each set of electrodes, each set of electrodes comprising a primary electrode capable of producing greater capacitive coupling to a touch in relation to capacitive coupling of sub-electrodes electrically connected and substantially parallel to the primary electrode, the primary electrode disposed between at least two of the sub-electrodes.
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41. A touch sensing system, comprising:
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means for capacitively sensing a touch on a touch surface using a first set of electrodes, the first set of electrodes including substantially parallel and electrically connected first primary electrode and first sub-electrodes disposed on either side of the first primary electrode;
means for generating a first touch signal based on the touch sensed using the electrode set;
means for capacitively sensing a touch on a touch surface using sets of electrodes adjacent to the first electrode set, each adjacent set of electrodes including substantially parallel and electrically connected adjacent primary electrode and adjacent sub-electrodes disposed on either side of the adjacent primary electrode, the adjacent sub-electrodes interleaved with the first sub-electrodes to increase an area of capacitive coupling of the first and adjacent electrode sets;
means for generating additional touch signals based on the touch sensed using the adjacent sets of electrodes; and
means for determining a location of the touch in proximity with the touch surface based on at least one of the first and the additional touch signals.
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Specification