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. 10, 2015
Filed:
Nov. 06, 2013
Lg Display Co., Ltd., Seoul, KR;
Ki-Woog Song, Goyang-si, KR;
Sung-Hoon Pieh, Seoul, KR;
Seok-Joon Oh, Paju-si, KR;
Youn-Seok Kam, Seoul, KR;
Dong-Hyuk Kim, Seoul, KR;
Seon-Keun Yoo, Gunpo-si, KR;
Tae-Shick Kim, Yongin-si, KR;
LG DISPLAY CO., LTD., Seoul, KR;
Abstract
An organic light emitting display device includes first and second electrodes facing each other on a substrate, at least one emission layer formed between the first and second electrodes, a hole transport layer formed between the first electrode and the emission layer, and an electron transport layer formed between the second electrode and the emission layer, wherein the emission layer includes a first emission mixed layer formed on the hole transport layer, the first emission mixed layer including a first hole-type host and a first phosphorescent dopant, and a second emission mixed layer formed between the first emission mixed layer and the electron transport layer, the second emission mixed layer including a first electron-type host and a second phosphorescent dopant.