Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1985-12-13
1987-04-07
Roy, Upendra
Metal working
Method of mechanical manufacture
Assembling or joining
29576W, 148 15, 148175, 148187, 148DIG84, 357 16, 357 34, 357 91, H01L 21265, H01L 2948
Patent
active
046549609
ABSTRACT:
Bipolar transistors and other electronic structures are fabricated on a gallium arsenide (GaAs) substrate to form an integrated circuit device. This process is made possible by development of an ion implant technique which uses an acceptor material to create a P type region, boron or protons to create insulating regions, and silicon or selenium to create an N type region. The process avoids the difficult problems encountered in diffusion methods, and, due to the precise control available with the ion implant method, makes possible the fabrication of IC quality transistors consistently over a substrate. This same control enables the fabrication of integrated circuits with improved device packing density and reduced parasitic parameters.
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Doerbeck Friedrich H.
Duncan Walter M.
McLevige William V.
Yuan Han-Tzong
Comfort James T.
Hoel Carlton H.
Roy Upendra
Sharp Melvin
Texas Instruments Incorporated
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