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:
Jun. 02, 2015
Filed:
Oct. 24, 2013
Lg Display Co., Ltd., Seoul, KR;
Gwi-Jeong Cho, Daegu, KR;
Jae-Man Lee, Seoul, KR;
Jeong-Haeng Heo, Paju-si, KR;
So-Yeon Ahn, Seoul, KR;
Tae-Shick Kim, Yongin-si, KR;
Hee-Dong Choi, Uiwang-si, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
An organic light emitting display device with improved lifespan is disclosed. The organic light emitting display device includes first and second electrodes facing each other on a substrate, at least two light emitting units formed between the first and second electrodes, an N-type charge generation layer and a P-type charge generation layer sequentially stacked between the light emitting units, and at least one auxiliary charge generation layer formed between at least any one of the P-type charge generation layer and the N-type charge generation layer and an emitting layer of the light emitting unit disposed on an upper or lower portion of the at least any one thereof and generating electrons and holes supplied to the emitting layer of the light emitting unit.