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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 11742439 B1

PDFFull Text
Date of Patent:
Aug. 29, 2023

Filed:

Aug. 24, 2018

Drying method of polyimide paste and manufacturing method of solar cell having high photoelectric conversion efficiency

Applicant:

Shin-etsu Chemical Co., Ltd., Tokyo, JP;

Inventors:

Takenori Watabe, Annaka, JP;

Hiroshi Hashigami, Annaka, JP;

Hiroyuki Ohtsuka, Karuizawa-machi, JP;

Assignee:

SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Cheung Lee

Int. Cl.
CPC ...
H01L 31/0224 (2006.01); B05D 3/02 (2006.01); B05D 3/10 (2006.01); C08G 73/10 (2006.01); C08J 5/18 (2006.01); H01L 31/068 (2012.01); H01L 31/0216 (2014.01); H01L 31/18 (2006.01);
U.S. Cl.
CPC ...
H01L 31/022441 (2013.01); B05D 3/0254 (2013.01); B05D 3/105 (2013.01); B05D 3/107 (2013.01); B05D 3/108 (2013.01); C08G 73/10 (2013.01); C08J 5/18 (2013.01); H01L 31/0216 (2013.01); H01L 31/0224 (2013.01); H01L 31/0682 (2013.01); C08J 2379/08 (2013.01); H01L 31/18 (2013.01); Y02E 10/544 (2013.01); Y02E 10/546 (2013.01); Y02E 10/547 (2013.01); Y02E 10/549 (2013.01);
Abstract

A drying method of a polyimide paste which can maintain a printing shape while maintaining productivity includes an organic solvent and a polyimide resin dissolved in the organic solvent, and which becomes cured polyimide by being cured as a result of being dried and heated, the drying method including a step of applying the polyimide paste to a surface of a base material, a step of applying a solvent including a polar material to a surface of the base material at least at a portion where the polyimide paste is applied, and a step of, after applying the solvent including the polar material, drying the polyimide paste and the solvent including the polar material.

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