Patent
1991-07-19
1992-04-14
James, Andrew J.
357 231, 357 41, 357 51, 357 65, H01L 2348, H01L 2702, H01L 2701
Patent
active
051052563
ABSTRACT:
A semiconductor device having a high density structure and resistant against external abnormal electric charges is disclosd. The semiconductor device comprises an input diffusion resistor coupled to an external terminal and formed in a semiconductor substrate, a diffusion region formed in the semiconductor substrate and a voltage wiring having a contact portion connected to the diffusion region through at least one contact hole formed in an insulating layer covering the diffusion region. A first distance between a first end of the diffusion region close to the diffusion resistor and a first part of the contact portion nearest to the first end is made larger than a distance between a second end opposite to the first end of the diffusion region and a second part of the contact portion nearest to the second end.
REFERENCES:
patent: 4692781 (1987-09-01), Rounhra et al.
patent: 4757368 (1988-07-01), Masunaga et al.
patent: 4785343 (1988-11-01), Nezh
patent: 4803527 (1989-02-01), Hatta et al.
James Andrew J.
NEC Corporation
Ngo Ngan Van
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