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:
Nov. 22, 2011
Filed:
Sep. 23, 2004
Mu-hyun Kim, Suwon-si, KR;
Byung-doo Chin, Seongnam-si, KR;
Myung-won Song, Suwon-si, KR;
Seong-taek Lee, Suwon-si, KR;
Mu-Hyun Kim, Suwon-si, KR;
Byung-Doo Chin, Seongnam-si, KR;
Myung-Won Song, Suwon-si, KR;
Seong-Taek Lee, Suwon-si, KR;
Samsung Mobile Display Co., Ltd., Yongin, KR;
Abstract
The present invention discloses an organic light emitting device for preventing element defects and improving picture quality by reducing a taper angle of a substrate surface. The flat panel display of the present invention comprises, an insulating substrate, a lower layer formed on the insulating substrate and having a first step and a first taper angle with respect to the substrate surface, and an upper layer formed on the insulating substrate and for reducing the taper angle of the lower layer. The upper layer has a second taper angle smaller than the first taper angle of the lower layer. The upper layer is a conductive layer that may be applied by a wet coating method, has a charge transporting capability, and is selected from at least one of a small-molecule organic layer including a carbazole-based, arylamine-based, hydrazone-based, stilbene-based, oxadiazole-based, starburst-based derivatives, and a polymer organic layer including PEDOT, PANI, carbazole-based, arylamine-based, perylene-based, pyrrole-based, oxadiazole-based derivatives.