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US 2004/0238647 A1Published application
Card device with a sweep-type fingerprint sensor
AssigneeLightuning Tech. Inc.
InventorsChingfu Tsou, Bruce C. S. Chou
Life of this patent
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Abstract
A card device includes a substrate having two long sides and two short sides, and a sweep-type fingerprint sensor embedded into the substrate. The sweep-type fingerprint sensor has an exposed fingerprint sensing surface, and is disposed in a rectangular low-stress region. The rectangular low-stress region has a dimension substantially smaller than or equal to 30 mm*22 mm. The shortest distance from the low-stress region to each long side is substantially equal to 2 mm, and the shortest distance from the low-stress region to each short side is substantially equal to 2 mm.
Claims16
A card device, comprising:
- a substrate having two long sides and two short sides;
- and
- a sweep-type fingerprint sensor, which is embedded into the substrate and has an exposed fingerprint sensing surface, wherein the sweep-type fingerprint sensor is disposed in a rectangular low-stress region having a dimension substantially smaller than or equal to 30 mm*22 mm, the shortest distance from the low-stress region to each of the long sides is substantially equal to 2 mm, and the shortest distance from the low-stress region to each of the short sides is substantially equal to 2 mm.
Dependencies are inferred from the claim text.