Method for manufacturing semiconductor device

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United States of America Patent

PATENT NO 5403772
SERIAL NO

08160908

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Abstract

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A method for manufacturing a semiconductor device such as a thin film transistor using a crystal silicon film is provided. The crystal silicon film is obtained by selectively forming films, particles or clusters containing nickel, iron, cobalt, ruthenium, rhodium, paradium, osmium, iridium, platinum, scandium, titanium, vanadium, chrome, manganese, copper, zinc, gold, silver or silicide thereof in a form of island, line, stripe, dot or film on or under an amorphous silicon film and using them as a starting point, by advancing its crystallization by annealing at a temperature lower than a normal crystallization temperature of an amorphous silicon. A transistor whose leak current is low and a transistor in which a mobility is high are obtained in the same time in structuring a dynamic circuit having a thin film transistor by selectively forming a cover film on a semiconductor layer which is to become an active layer of the transistor and by thermally crystallizing it thereafter.

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Patent Owner(s)

  • SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukunaga, Takeshi Kanagawa, JP 231 14807
Takayama, Toru Kanagawa, JP 530 27252
Takemura, Yasuhiko Kanagawa, JP 581 31438
Uochi, Hideki Kanagawa, JP 193 9468
Zhang, Hongyong Kanagawa, JP 462 30430

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