Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Chip mounted on chip
Reissue Patent
2005-10-04
2005-10-04
Clark, S. V. (Department: 2815)
Active solid-state devices (e.g., transistors, solid-state diode
Combined with electrical contact or lead
Chip mounted on chip
C257S685000, C257S686000
Reissue Patent
active
RE038806
ABSTRACT:
A first semiconductor chip is produced by affixing a thermo-compression sheet to the back surface of a wafer having a circuit formed on its front surface. The first semiconductor chip is mounted on a circuit board including an insulating substrate and a wiring layer provided on the insulating substrate so that the back surface of the first semiconductor chip faces the circuit board. A second semiconductor chip produced in the same manner as the first semiconductor chip is mounted on the first semiconductor chip with its back surface facing the first semiconductor chip. Each of the first and second semiconductor chips is wire-bonded to the wiring layer with a wire. The first and second semiconductor chips and the wire are sealed with a sealing resin. The wiring layer is connected to external connection terminals through via holes provided in the insulating substrate.
REFERENCES:
patent: 6077724 (2000-06-01), Chen
patent: 5-90486 (1993-04-01), None
patent: 9-121002 (1997-05-01), None
Fukui Yasuki
Matsune Yuji
Narai Atsuya
Sota Yoshiki
Clark S. V.
Nixon & Vanderhye P.C.
Sharp Kabushiki Kaisha
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