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:
Nov. 15, 2005
Filed:
Jan. 10, 2003
Kenkichi Suzuki, Mobara, JP;
Tetsuya Nagata, Hitachinaka, JP;
Michiko Takahashi, Mobara, JP;
Masakazu Saito, Mobara, JP;
Toshio Ogino, Mobara, JP;
Masanobu Miyano, Fukuoka, JP;
Kenkichi Suzuki, Mobara, JP;
Tetsuya Nagata, Hitachinaka, JP;
Michiko Takahashi, Mobara, JP;
Masakazu Saito, Mobara, JP;
Toshio Ogino, Mobara, JP;
Masanobu Miyano, Fukuoka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A display device includes a pixel region having a plurality of pixels and a peripheral circuit region disposed at a periphery of the pixel region for driving the pixels. The peripheral circuit region includes transistors fabricated from polycrystalline semiconductor and having a semiconductor crystalline grain of a first kind in a channel region thereof, wherein a grain size of the semiconductor crystalline grain of the first kind is at least 3 μm. The pixel region includes transistors fabricated from polycrystalline semiconductor and having a semiconductor crystalline grain of a second kind in a channel region thereof, wherein a grain size of the semiconductor crystalline grain of the second kind is at least 0.05 μm.