Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Flip chip
Reexamination Certificate
2007-02-20
2007-02-20
Nguyen, Thanh (Department: 2813)
Active solid-state devices (e.g., transistors, solid-state diode
Combined with electrical contact or lead
Flip chip
C257S788000, C257S620000
Reexamination Certificate
active
10938533
ABSTRACT:
A method for manufacturing a semiconductor device which enables favorable back-surface grinding of a semiconductor substrate with preventing a warp in the substrate, thereby manufacturing a thickness-reduced semiconductor device. A projection electrode is formed on a surface of a wafer. A resin layer is formed on the wafer surface to a thickness to bury a top of the projection electrode. A cut groove is formed in the resin layer along a scribe line formed on the wafer. Thereafter, grinding is made on a back surface of the wafer by the use of a grinder or the like. A surface portion of the resin layer is removed by etching or the like, to expose the top of the projection electrode. The wafer is cut along the cut groove to obtain individual semiconductor chip pieces.
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Nguyen Thanh
Rabin & Berdo P.C.
Rohm & Co., Ltd.
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