Process for and structure of high density VLSI circuits, having

Metal working – Method of mechanical manufacture – Assembling or joining

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29577C, 29578, 29591, 148187, 148188, 156643, 156653, 156657, 357 23, 357 41, 357 45, 357 59, H01L 21225, H01L 21441

Patent

active

044779623

ABSTRACT:
A process for producing VLSI (very large scale integrated) circuits employs techniques of self-aligned gates and contacts for FET devices. The use of materials in successive layers having different etch characteristics permits selective oxidation of desired portions only of the structure without need for masking and removal of selected material from desired locations by batch removal processes again without use of masking. There results VLSI circuits having increased density and reliability.

REFERENCES:
patent: 3967981 (1976-07-01), Yamazaki
patent: 4179311 (1979-12-01), Athanas
patent: 4180826 (1979-12-01), Shappir
patent: 4210993 (1980-07-01), Sunami
patent: 4224733 (1980-09-01), Spadea

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