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.

Date of Patent:
May. 14, 2013

Filed:

Aug. 06, 2012
Applicants:

Kunio Hosoya, Atsugi, JP;

Saishi Fujikawa, Atsugi, JP;

Takahiro Kasahara, Atsugi, JP;

Inventors:

Kunio Hosoya, Atsugi, JP;

Saishi Fujikawa, Atsugi, JP;

Takahiro Kasahara, Atsugi, JP;

Assignee:

Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/18 (2006.01); H01L 33/00 (2010.01);
U.S. Cl.
CPC ...
Abstract

To achieve enlargement and high definition of a display portion, a single crystal semiconductor film is used as a transistor in a pixel, and the following steps are included: bonding a plurality of single crystal semiconductor substrates to a base substrate; separating part of the plurality of single crystal semiconductor substrates to form a plurality of regions each comprising a single crystal semiconductor film over the base substrate; forming a plurality of transistors each comprising the single crystal semiconductor film as a channel formation region; and forming a plurality of pixel electrodes over the region provided with the single crystal semiconductor film and a region not provided with the single crystal semiconductor film. Some of the transistors electrically connecting to the pixel electrodes formed over the region not provided with the single crystal semiconductor film are formed in the region provided with the single crystal semiconductor film.


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