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:
Jul. 25, 2023
Filed:
Jul. 27, 2021
Sakai Display Products Corporation, Sakai, JP;
Katsuhiko Kishimoto, Sakai, JP;
Yozo Narutaki, Sakai, JP;
SAKAI DISPLAY PRODUCTS CORPORATION, Sakai, JP;
Abstract
An organic EL device (D) according to an embodiment of the present invention has: a substrate (); a drive circuit layer () having a plurality of TFTs formed on the substrate; interlayer insulation layers (Pa,Pb) formed on the drive circuit layer; an organic EL element layer () formed on the interlayer insulation layers; and a thin-film sealing structure (DE) formed so as to cover the organic EL element layer. The interlayer insulation layers have contact holes (CH, CH). Contact parts (C, C) that connect the drive circuit layer and the organic EL element layer are formed inside the contact holes. The surface (Pb_Sb) of the interlayer insulation layers and the surface (C_Sb) of the contact parts are flush, and the arithmetic average roughness Ra of the surfaces are 50 nm or less.