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:
Jan. 04, 2005
Filed:
Feb. 03, 2003
Takahiro Amano, Suwa, JP;
Kiyofumi Kitawada, Chino, JP;
Takahiro Amano, Suwa, JP;
Kiyofumi Kitawada, Chino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The invention provides a thin-film semiconductor device, which reduces or prevents an undercut from being produced below a thin film when a pattern including an intersection is formed in the thin film. The invention also provides a method of manufacturing the same. A semiconductor film has a pattern including a bent shape or a projected shape. One line segment and another line segment, which define an intersection of the bent shape or the projected shape and which are consecutive, have an additional line segment interposed between ends of the one line segment and the other line segment form a smooth intersection in which each of the angles formed between the additional line segment and the one line segment and between the additional line segment and the other line segment is greater than 90° and less than 180°.