Fishing – trapping – and vermin destroying
Patent
1994-12-05
1998-06-16
Niebling, John
Fishing, trapping, and vermin destroying
437 44, 437 57, 437160, 437164, H01L 21265
Patent
active
057669651
ABSTRACT:
A diffused layer serves as a source and a drain. It is formed comprised of a deep first diffused layer and a shallow second diffused layer positioned between the first diffused layer and the channel region. In the second diffused region, a distribution in a depth direction of carriers has a profile in which the concentration is more than 5.times.10.sup.18 cm.sup.-3 at the peak and is in correspondence with a carrier concentration of the semiconductor substrate at a depth less than 0.04 .mu.m. Since the second diffused layer has a high concentration, the short-channel effect can be suppressed. As the second diffused region, a solid phase diffusion source such as an impurity doped silicate glass is used.
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patent: 5001082 (1991-03-01), Goodwin-Johansson
patent: 5024959 (1991-06-01), Pfiester
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patent: 5443994 (1995-08-01), Solheim
Wolf, "Silicon Processing for the VLSI Era vol. 2: Process Integration", Latice Press, pp. 354-361, 1990.
Akasaka Yasushi
Iwai Hiroshi
Katsumata Yasuhiro
Matsuda Satoshi
Momose Hisayo
Booth Richard A.
Niebling John
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