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. 04, 2014
Filed:
Jul. 19, 2011
Sang-pil Lee, Yongin, KR;
Young-rok Song, Yongin, KR;
Jung-bae Song, Yongin, KR;
Beom-rak Choi, Yongin, KR;
Sang-Pil Lee, Yongin, KR;
Young-Rok Song, Yongin, KR;
Jung-Bae Song, Yongin, KR;
Beom-Rak Choi, Yongin, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An organic light emitting display apparatus is manufactured using a simplified manufacturing process and prevents or reduces the formation of dark spots. The organic light emitting display apparatus includes: red, green, and blue sub-pixel regions, each including a first electrode on a substrate; a distributed Bragg reflector (DBR) layer between the substrate and the first electrode; a hole injection layer on the DBR layer and covering the first electrode; a hole transport layer on the hole injection layer; an auxiliary layer between the hole injection layer and the hole transport layer in the green sub-pixel region; a green light-emission layer on the hole transport layer in the blue and green sub-pixel regions; a blue light-emission layer on the green light-emission layer in the blue sub-pixel region; and a red light-emission layer on the hole transport layer in the red sub-pixel region.