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:
May. 20, 2025
Filed:
Jul. 10, 2023
Sakai Display Products Corporation, Sakai, JP;
Katsuhiko Kishimoto, Sakai, JP;
SAKAI DISPLAY PRODUCTS CORPORATION, Sakai, JP;
Abstract
The present invention is equipped with: a substrate () that has a surface upon which a drive circuit containing a TFT () is formed; a planarizing layer () that makes the surface of the substrate () planar by covering the drive circuit; and an organic light emitting element () that is provided with a first electrode () formed upon the surface of the planarization film and connected to the drive circuit, an organic light emitting layer () formed upon the first electrode, and a second electrode () formed upon the organic light emitting layer. In addition, the planarizing layer () includes a first inorganic insulating layer () and an organic insulating layer () that are layered upon the drive circuit, and the surface of the organic insulating layer () is formed with an arithmetic mean roughness Ra of no more than 50 nm.