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. 01, 2011
Filed:
Nov. 21, 2008
Applicants:
Tomokazu Yokoi, Kanagawa, JP;
Yujiro Sakurada, Kanagawa, JP;
Inventors:
Tomokazu Yokoi, Kanagawa, JP;
Yujiro Sakurada, Kanagawa, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
A non-single-crystal semiconductor layer is formed over a substrate, and then a single crystal semiconductor layer is formed over part of the non-single-crystal semiconductor layer. Thus, a semiconductor element of a region which requires a large area (e.g. a pixel region in a display device) can be formed using the non-single-crystal semiconductor layer, and a semiconductor element of a region which requires high speed operation (e.g. a driver circuit region in a display device) can be formed using the single crystal semiconductor layer.