The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2002
Filed:
Oct. 26, 2000
Yoshinobu Kimura, Tokyo, JP;
Makoto Ohkura, Fuchu, JP;
Takeo Shiba, Kodaira, JP;
Takahiro Kamo, Tokyo, JP;
Yoshiyuki Kaneko, Hachioji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A first thin film is formed on one surface of an insulating base, and a second thin film having a thermal conductivity higher than the first thin film is formed on the first thin film. An amorphous semiconductor thin film having a higher thermal conductivity than the second thin film is formed on at least the second thin film. The amorphous semiconductor thin film is changed to a polycrystalline semiconductor thin film through laser annealing. The provision of the second thin film results in larger and uniform crystal grain diameters and less proturberances in the polycrystalline semiconductor thin film.