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US 7,875,814 B2Granted
Electromagnetic digitizer sensor array structure
AssigneeTPO Displays Corp.
InventorsDinguo Chen, Yingchih Lee
Life of this patent
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AssigneeTPO Displays Corp.
InventorsDinguo Chen, Yingchih Lee
Estimating the term…
An electromagnetic digitizer having a sensor segment that includes a generally longitudinal network of conductive lines. Two or more conductive lines are coupled in parallel. To enhance sensitivity, the adjacent lines are interconnected along the longitudinal structure, using interconnections in the form of short lines, oriented at an angle. The sensor segments may be miniaturized, to facilitate integration into a display module using semiconductor fabrication processes. Various sensor array structures may be implemented using the sensor segment structures. The sensor array may include longitudinal sensor segments arranged in a parallel array. To further enhancing sensitivity of the sensor array, additional lines may be provided between adjacent longitudinal sensor segments. The sensor array may also include half loop (or U-shaped) sensor segments arranged in an overlapping parallel array, or full loop sensor segments arranged in an overlapping parallel array.
A sensor array for an electromagnetic digitizer, comprising a plurality of sensor segments, each having a generally longitudinal structure that includes a network of at least two conductive lines spaced apart along a longitudinal direction, wherein adjacent conductive lines are interconnected by a plurality of interconnection lines at a plurality of locations along the conductive lines other than at the ends of the conductive lines, and wherein the interconnection lines are shunt lines shorting the adjacent conductive lines at the plurality of locations.
Dependencies are inferred from the claim text.