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.:

US 8785302 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 22, 2014

Filed:

Feb. 29, 2012
Applicant:

Yasuo Segawa, Hyogo, JP;

Inventor:

Yasuo Segawa, Hyogo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

A crystal silicon film forming method according to the present invention includes: forming a metal film; forming an insulating film on the metal film, and forming a crystal silicon film made of polycrystal Si on the insulating film. In the forming of an insulating film, the insulating film is formed within a film thickness range of 160 nm to 190 nm. The forming of a crystal silicon film includes forming an amorphous silicon film made of a-Si on the insulating film, within a film thickness range of 30 nm to 45 nm, and forming the crystal silicon film from the amorphous silicon film by irradiating the amorphous silicon film with a light of a green laser.


Find Patent Forward Citations

Segawa, Yasuo. (2014). Crystal silicon film forming method, thin-film transistor and display device using the crystal silicon film (U.S. Patent No. 8785302). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8785302

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…