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:
Oct. 08, 2013
Filed:
Nov. 26, 2008
Mu-gyeom Kim, Yongin-si, KR;
Sang-yeol Kim, Yongin-si, KR;
Sung-hoon Lee, Yongin-si, KR;
Jung-bae Song, Yongin-si, KR;
Mu-gyeom Kim, Yongin-si, KR;
Sang-yeol Kim, Yongin-si, KR;
Sung-hoon Lee, Yongin-si, KR;
Jung-bae Song, Yongin-si, KR;
Samsung Display Co., Ltd., Giheung-Gu, Yongin, Gyeonggi-Do, KR;
Abstract
A white organic light emitting device (WOLED) includes electroluminescence (EL) red and blue light emitting layers disposed inside a cavity and a non-electroluminescence (NEL) green light emitting unit disposed outside the cavity or on a region inside the cavity where there are no combinations of electrons and holes. The green light emitting unit adjusts a green spectrum by resonating greenish blue light in the cavity, or is disposed on a path through which red and blue light output from the cavity travels and adapted to absorb the blue light and emit green light. A photoluminescence (PL) light emitting layer may be a capping layer covering the cavity. The capping layer functions as an optical path control layer controlling an optical path. A white spectrum is obtained by combining blue light and red light generated by EL and green generated by PL. This WOLED can operate at a low voltage.