Radiant energy – Photocells; circuits and apparatus – Housings
Reexamination Certificate
2006-03-10
2008-11-04
Luu, Thanh X (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Housings
C257S786000
Reexamination Certificate
active
07446307
ABSTRACT:
A sensor semiconductor device and a fabrication method thereof are provided. The fabrication method includes mounting a sensor chip on a surface of a substrate; forming a transparent cover on the sensor chip; forming a dielectric layer and a circuit layer on the substrate, wherein the sensor chip is electrically connected to the substrate through the circuit layer and the transparent cover is exposed from the dielectric layer such that light can pass through the transparent cover to reach a sensor region of the sensor chip and allow the sensor chip to operate; and implanting a plurality of solder balls on another surface of the substrate to electrically connect the sensor chip to an external device. The sensor semiconductor device can be cost-effectively fabricated, and the circuit cracking and known good die (KGD) problems of the prior art can be avoided.
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patent: 2003/0071338 (2003-04-01), Jeung et al.
patent: 2005/0103987 (2005-05-01), Brechignac et al.
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Chang Cheng-Yi
Huang Chien-Ping
Huang Chih-Ming
Corless Peter F.
Edwards Angell Palmer & & Dodge LLP
Jensen Steven M.
Luu Thanh X
Siliconware Precision Industries Co. Ltd.
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