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:
Mar. 15, 2011
Filed:
Mar. 13, 2008
Jung-bae Song, Yongin-si, KR;
Sang-yeol Kim, Yongin-si, KR;
Mu-gyeom Kim, Yongin-si, KR;
Sung-hun Lee, Yongin-si, KR;
Jung-bae Song, Yongin-si, KR;
Sang-yeol Kim, Yongin-si, KR;
Mu-gyeom Kim, Yongin-si, KR;
Sung-hun Lee, Yongin-si, KR;
Samsung Electronics Co., Ltd., Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;
Samsung Mobile Display Co., Ltd., Giheung-Gu, Yongin, Gyunggi-Do, KR;
Abstract
A white organic light emitting device (OLED) includes an anode and a cathode spaced apart from each other; a blue light emitting layer, a green light emitting layer, and a red light emitting layer sequentially formed between the anode and the cathode; a first buffer layer formed between the blue light emitting layer and the green light emitting layer, and having a HOMO (highest occupied molecular orbital)−LOMO (lowest occupied molecular orbital) energy gap higher than or equal to that of the adjacent light emitting layers; and a second buffer layer formed between the green light emitting layer and the red light emitting layer, and having a LOMO energy level higher than that of the red light emitting layer.