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:
Oct. 02, 2012
Filed:
Mar. 10, 2009
Kouichi Rokuhara, Shimotsuma, JP;
Kouichi Rokuhara, Shimotsuma, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A method of producing an organic EL element according to the present invention is a method of producing an organic electroluminescent element by stacking at least an anode, a cathode, and an organic light-emitting layer disposed between the anode and the cathode. The method includes an organic light-emitting layer formation step for forming the organic light-emitting layer by applying an organic light-emitting ink having an organic light-emitting material and a solvent to a light-emitting layer formation region on which the organic light-emitting layer is to be formed, by using a relief printing plate that has a relief portion in a shape corresponding to the shape of light-emitting layer formation region and has a plurality of grooves formed on a surface portion of the relief portion. According to the method of the present invention, coating unevenness when the region for forming a large area of organic light-emitting layer is coated with the organic light-emitting ink by using a relief printing method can be prevented, and thus the organic light-emitting layer with a uniform thickness can be formed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile