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:
May. 03, 2005
Filed:
Jan. 30, 2003
Shinya Yamaguchi, Mitaka, JP;
Masanobu Miyao, Fukuoka, JP;
Kiyokazu Nakagawa, Sayama, JP;
Nobuyuki Sugii, Tokyo, JP;
Shinya Yamaguchi, Mitaka, JP;
Masanobu Miyao, Fukuoka, JP;
Kiyokazu Nakagawa, Sayama, JP;
Nobuyuki Sugii, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An electronic apparatus employs a polycrystalline semiconductor thin film structure formed of an insulating substrate and a plurality of polycrystalline layers laminated on the insulating substrate. A plurality of transistors are formed at the surface of the polycrystalline semiconductor thin film structure, each transistor being formed in a region of one of a plurality of crystal grains disseminated on the surface of the polycrystalline layers. A number of crystal grains in each of the polycrystalline layers is gradually reduced from a lower layer to an upper layer.