Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Of specified material other than unalloyed aluminum
Reexamination Certificate
2006-02-21
2006-02-21
Owens, Douglas W (Department: 2811)
Active solid-state devices (e.g., transistors, solid-state diode
Combined with electrical contact or lead
Of specified material other than unalloyed aluminum
C257S762000, C257S766000
Reexamination Certificate
active
07002253
ABSTRACT:
It is an object of the present invention to achieve a semiconductor device capable of preventing circuit malfunctions caused by noise without decreasing an integration degree of the circuit by making a space between signal interconnections wider and inserting a shield or a shield layer between the signal interconnections. The semiconductor device has a multilayer interconnection structure wherein three or more interconnection layers are stacked on a silicon semiconductor substrate, and comprises: a first signal line which is formed with a (N−1)-th interconnection layer and comprises a latch circuit; a second signal line which is formed with a (N+1)-th interconnection layer and is arranged so as to cross the first signal line or partially overlap thereover; and a power supply interconnection serving as a shield interconnection which is formed with an N-th interconnection layer in a portion directly beneath the first signal line and the second signal line.
REFERENCES:
patent: 5933364 (1999-08-01), Aoyama et al.
patent: 6066896 (2000-05-01), Wada et al.
patent: 6166440 (2000-12-01), Yang
patent: 6352914 (2002-03-01), Ball et al.
patent: 11274424 (1999-10-01), None
Katsura Akihito
Yamamoto Hiroo
Matsushita Electric - Industrial Co., Ltd.
Owens Douglas W
Stevens Davis Miller & Mosher LLP
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