TWO LAYER CAPACITIVE SENSOR
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Accused Products
Abstract
The embodiments described herein provide improved sensor devices and methods that facilitate improved sensor devices. Specifically, the devices and methods provide capacitive image sensors that require only two layers of conductive elements formed on a single substrate. The ability to provide an image sensor using only a single substrate with two layers of conductive elements may substantially reduce the cost and complexity of the capacitive image sensor. In one embodiment, an input device is provided that comprises a first substrate having a first and second side. Each of the second array of second sensor electrodes comprises a plurality of isolated components disposed on the first side and a plurality of connectors disposed on the second side. The connectors and isolated components of the second sensor electrodes are arranged such that adjacent pairs of connectors along the first direction are separated by a distance substantially greater than the first pitch.
14 Citations
39 Claims
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1-19. -19. (canceled)
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20. A capacitive input device comprising:
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a substrate having a first side and a second side; a first plurality of sensor electrodes disposed on the first side of the substrate, wherein each sensor electrode of the first plurality of sensor electrodes is continuous and extends across the first side in a first direction; a second plurality of sensor electrodes, wherein each electrode of the second plurality of sensor electrodes comprises; a plurality of isolated components disposed on the first side of the substrate; a plurality of connectors disposed on the second side of the first substrate; and a plurality of vertical interconnects, each vertical interconnect ohmically coupling an isolated component on the first side with a connector on the second side such that the resulting second plurality of sensor electrodes are discontinuous and extend across the first side in a second direction, wherein a distance along the first direction between a pair of adjacent connectors of two adjacent sensor electrodes of the second plurality is at least 1.5 times greater than a distance along the first direction between the center of the isolated components of the two adjacent sensor electrodes. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A capacitive input device comprising:
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a substrate having a first side and a second side; a first plurality of sensor electrodes disposed on the first side, wherein each sensor electrode of the first plurality of sensor electrodes has a first major axis aligned in a first direction; a second plurality of sensor electrodes, each sensor electrode of the second plurality of second sensor electrodes comprises; at least two isolated components disposed on the first side of the substrate; and at least one connector disposed on the second side, wherein the at least two isolated components are ohmically coupled at distal ends by the at least one connector to form the sensor electrode, wherein each sensor electrode of the second plurality of sensor electrodes has second major axis aligned in a second direction, and wherein the second plurality of sensor electrodes has a first distance between centers of an adjacent pair of isolated components of different sensor electrodes in the second plurality of sensor electrodes, and a second distance between two connectors of two pairs of isolated components are separated by a second distance that is at least 1.5 times the first distance. - View Dependent Claims (29, 30, 31, 32, 33)
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34. A method for forming a capacitive input device, the method comprising:
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providing a substrate having a first side and a second side; forming a first plurality of sensor electrodes on the first side of the substrate, wherein each sensor electrode of the first plurality of sensor electrodes is continuous and extends across the first side in a first direction; forming a plurality of isolated components on the first side of the substrate; forming a second plurality of sensor electrodes by forming a plurality of connectors on the second side of the first substrate and a plurality of vertical interconnects, each vertical interconnect ohmically coupling an isolated component on the first side with a connector on the second side such that the resulting second plurality of sensor electrodes are discontinuous and extend across the first side in a second direction, wherein a distance along the first direction between a pair of adjacent connectors of two adjacent sensor electrodes of the second plurality is at least 1.5 times greater than a distance along the first direction between the center of the isolated components of the two adjacent sensor electrodes. - View Dependent Claims (35, 36, 37, 38, 39)
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Specification