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:
Mar. 08, 2011

Filed:

Mar. 28, 2006
Applicants:

Yukiharu Uraoka, Ikoma, JP;

Takashi Fuyuki, Ikoma, JP;

Hiroya Kirimura, Ikoma, JP;

Inventors:

Yukiharu Uraoka, Ikoma, JP;

Takashi Fuyuki, Ikoma, JP;

Hiroya Kirimura, Ikoma, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 51/40 (2006.01);
U.S. Cl.
CPC ...
Abstract

The core metal of a protein such as ferritin is used as a nucleus for crystallizing a silicone thin film and then the thus crystallized film is employed in the channel part of a thin-film transistor. By aligning the protein on the surface of amorphous silicone and heating, the crystallinity is controlled. In the case of ferritin, the core diameter of the protein is 7 mm. That is, this protein is highly even in size (i.e., the metal content). Thus, the amount of the protein to be deposited on the amorphous silicone surface can be accurately controlled by controlling the protein core density. Furthermore, the type of the core metal can be altered by chemical reactions and the above method is applicable not only to amorphous silicone but also to amorphous films of various types such as germanium. Thus, the amount of nickel required in crystallization is controlled by using a protein. Moreover, the distribution density of the nickel core is controlled to thereby conduct crystallization at a desired crystal size.


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