The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 2006
Filed:
Jan. 29, 2004
Akira Okada, Kawasaki, JP;
Mitsuru Sato, Kawasaki, JP;
Akira Okada, Kawasaki, JP;
Mitsuru Sato, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
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.