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:
Aug. 07, 2007
Filed:
Oct. 11, 2005
Applicants:
Hiroshi Kikuchi, Zushi, JP;
Mikio Hongo, Yokohama, JP;
Mutsuko Hatano, Kokubuji, JP;
Makoto Ohkura, Fuchiyu, JP;
Inventors:
Hiroshi Kikuchi, Zushi, JP;
Mikio Hongo, Yokohama, JP;
Mutsuko Hatano, Kokubuji, JP;
Makoto Ohkura, Fuchiyu, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/136 (2006.01); H01L 29/04 (2006.01); H01L 21/268 (2006.01);
U.S. Cl.
CPC ...
Abstract
A laser beam is selectively directed to an amorphous silicon film of a pixel portion on an active-matrix substrate of a display device to modify the amorphous silicon film into a polysilicon film. Pixel circuits such as thin film transistors are formed on the modified polysilicon film. Thus, it is possible to realize remarkably economically the display device provided with the active-matrix substrate having the high performance thin film transistor circuits.