Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – With window means
Reexamination Certificate
2011-08-02
2011-08-02
Nguyen, Cuong Q (Department: 2811)
Active solid-state devices (e.g., transistors, solid-state diode
Housing or package
With window means
C257S433000, C257S434000, C257S704000, C257S774000, C257SE23002
Reexamination Certificate
active
07989938
ABSTRACT:
A semiconductor device is disclosed that performs fingerprint recognition on the electrostatic-capacity principle. A finger sweeping across a fingerprint recognition area of a semiconductor chip provides positive fingerprint recognition operations with improved reliability.The semiconductor device includes the semiconductor chip having a sensor unit that performs fingerprint recognition, and a substrate having an opening formed in the position corresponding to the sensor unit. The semiconductor chip is flip chip bonded to the substrate such that the sensor unit corresponds to the opening, and except for the formed position of the opening, an under-fill material is provided between the semiconductor chip and the substrate.
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Okada Akira
Sato Mitsuru
Fujitsu Semiconductor Limited
Nguyen Cuong Q
Tran Trang Q
Westerman Hattori Daniels & Adrian LLP
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