Active solid-state devices (e.g. – transistors – solid-state diode – Lead frame – Small lead frame for connecting a large lead frame to a...
Reexamination Certificate
1999-03-10
2002-04-09
Williams, Alexander O. (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Lead frame
Small lead frame for connecting a large lead frame to a...
C257S670000, C257S676000, C257S674000, C257S698000, C257S666000, C257S497000, C257S675000
Reexamination Certificate
active
06369440
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a push-back substrate, a semiconductor apparatus in which a push-back substrate is used, and the manufacturing method of a push-back substrate.
The Japanese Patent Application Laid-Open No. H8-32185 discloses a conventional technology in this field.
In this reference, a push-back substrate is disclosed. Here, the term push-back refers to a technique for obtaining a piece-substrate that is used for manufacturing a semiconductor apparatus or the like. This technique is performed as follows. First, a prescribed portion of a substrate is punched to obtain a piece-substrate. An opening is created after the piece-substrate is removed. The piece-substrate is then pushed back into the opening to form a piece-substrate to be used for manufacturing a semiconductor apparatus or the like.
SUMMARY OF THE INVENTION
It is an object of the present invention to obtain a semiconductor apparatus substrate capable of preventing a pushed-back piece-substrate from being detached from the semiconductor apparatus substrate.
To achieve the above-stated objective, a semiconductor apparatus substrate according to the present invention has a substrate, a piece-substrate that has been punched out of the substrate and pushed back to the original position, an opening unit formed in a region of the substrate that substantially surrounds the piece-substrate, and a support unit installed inside the opening unit.
REFERENCES:
patent: 4048438 (1977-09-01), Zimmerman
patent: 5294827 (1994-03-01), McShane
patent: 5304818 (1994-04-01), Go
patent: 5309018 (1994-05-01), Shibata
patent: 5457341 (1995-10-01), West
patent: 5691242 (1997-11-01), Nomi et al.
patent: 5753974 (1998-05-01), Masukawa
patent: 6019274 (2000-02-01), Iwamoto
patent: 6081029 (2000-06-01), Yamaguchi
patent: 57-141947 (1982-09-01), None
patent: 61-39558 (1986-02-01), None
patent: 11-260951 (1999-09-01), None
Oki Electric Industry Co, Ltd.
Rabin & Berdo P.C.
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