Capacitive touch pad with adjacent touch pad electric field suppression
First Claim
1. A capacitive touch pad, comprising:
- an electrode board having touch sensor circuitry formed thereon;
a plurality of capacitive touch sensor pads formed in an array over the touch pad circuitry of the printed circuit board, the plurality of capacitive touch sensor pads spaced apart by a predetermined distance to form spaces between the pads of the plurality of capacitive touch sensor pads; and
a cover with a touch surface positioned over and covering substantially all of the plurality of capacitive touch sensor pads, the cover having a first cavity with a first depth, the first cavity being shaped to form an air gap between the pads of the plurality of capacitive touch sensor pads, and the first cavity being aligned with the spaces between the pads of the plurality of capacitive touch sensor pads.
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Accused Products
Abstract
A capacitive touch pad includes an electrode board, a plurality of capacitive touch sensor pads, and a cover. The electrode board has touch sensor circuitry formed thereon. The plurality of capacitive touch sensor pads is formed in an array over the touch pad circuitry of the printed circuit board. The plurality of capacitive touch sensor pads is spaced apart by a predetermined distance to form spaces between the pads of the plurality of capacitive touch sensor pads. The cover is positioned over and covering substantially all of the plurality of capacitive touch sensor pads. The cover has a first cavity with a first depth, where the first cavity is shaped to form an air gap between the pads of the plurality of capacitive touch sensor pads to dampen capacitive coupling between adjacent touch pads.
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Citations
20 Claims
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1. A capacitive touch pad, comprising:
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an electrode board having touch sensor circuitry formed thereon; a plurality of capacitive touch sensor pads formed in an array over the touch pad circuitry of the printed circuit board, the plurality of capacitive touch sensor pads spaced apart by a predetermined distance to form spaces between the pads of the plurality of capacitive touch sensor pads; and a cover with a touch surface positioned over and covering substantially all of the plurality of capacitive touch sensor pads, the cover having a first cavity with a first depth, the first cavity being shaped to form an air gap between the pads of the plurality of capacitive touch sensor pads, and the first cavity being aligned with the spaces between the pads of the plurality of capacitive touch sensor pads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A capacitive touch pad, comprising:
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an electrode board having touch sensor circuitry formed thereon; a plurality of capacitive touch sensor pads formed in an array over the touch pad circuitry of the printed circuit board, the plurality of capacitive touch sensor pads spaced apart by a predetermined distance to form spaces between the pads of the plurality of capacitive touch sensor pads; and a cover positioned over and covering substantially all of the plurality of capacitive touch sensor pads; wherein the electrode board has a plurality of first cavities, each with a first depth, the plurality of first cavity being shaped to form a plurality of air gaps between each of the spaces between the pads of the plurality of capacitive touch sensor pads, and the plurality of first cavities being aligned with the spaces between the pads of the plurality of capacitive touch sensor pads. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A capacitive touch pad, comprising:
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an electrode board having touch sensor circuitry formed thereon; a plurality of capacitive touch sensor pads formed in an array over the touch pad circuitry of the printed circuit board, the plurality of capacitive touch sensor pads spaced apart by a predetermined distance to form spaces between the pads of the plurality of capacitive touch sensor pads; and a cover with a touch surface positioned over and covering substantially all of the plurality of capacitive touch sensor pads; wherein the cover has a first cavity with a first depth, the first cavity shaped to form an air gap between the pads of the plurality of capacitive touch sensor pads, and the first cavity being aligned with the spaces between the pads of the plurality of capacitive touch sensor pads; and wherein the electrode board has a second cavity with a second depth, the second cavity being shaped to form an air gap between the pads of the plurality of capacitive touch sensor pads. - View Dependent Claims (17, 18, 19, 20)
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Specification