Semiconductor device manufacturing: process – Forming bipolar transistor by formation or alteration of... – Forming lateral transistor structure
Patent
1997-01-23
1998-07-28
Dutton, Brian
Semiconductor device manufacturing: process
Forming bipolar transistor by formation or alteration of...
Forming lateral transistor structure
438556, H01L 21331, H01L 2122, H01L 2138
Patent
active
057862583
ABSTRACT:
A lateral bipolar transistor capable of forming a narrow-sized diffusion region, such as a base width, is disclosed. The transistor exhibits no scattering in the direction of the depth of the width of the diffusion region. Emitter resistance is reduced by varying an impurity diffusion source at substantially a uniform concentration in a semiconductor portion and forming a diffusion region by diffusion from the impurity diffusion source. The bipolar transistor has an SOI structure. A method of making such device is also disclosed.
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patent: 5424575 (1995-06-01), Washio et al.
patent: 5580797 (1996-12-01), Miwa et al.
patent: 5629217 (1997-05-01), Miwa et al.
Gomi Takayuki
Kato Katsuyuki
Miwa Hiroyuki
Dutton Brian
Kananen Ronald P.
Sony Corporation
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