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:
Aug. 23, 2005
Filed:
Nov. 30, 2001
Jeong Ik Lee, Suwon, KR;
Hyoyoung Lee, Taejon, KR;
Jiyoung OH, Taejon, KR;
Hye Yong Chu, Taejon, KR;
Lee-mi DO, Taejon, KR;
Seong Hyun Kim, Taejon, KR;
Taehyoung Zyung, Taejon, KR;
Jeong Ik Lee, Suwon, KR;
Hyoyoung Lee, Taejon, KR;
Jiyoung Oh, Taejon, KR;
Hye Yong Chu, Taejon, KR;
Lee-Mi Do, Taejon, KR;
Seong Hyun Kim, Taejon, KR;
Taehyoung Zyung, Taejon, KR;
Abstract
Provided are spirobifluorene compounds which can provide excellent processibility with improved solubility in organic solvents, an electroluminescence (EL) polymer obtained therefrom and an EL element having the same. The EL polymer comprising repeating units of the following formula:wherein Rand Rare identical or different and are independently a straight-chain or branched alkyl group having from 1 to 22 carbon atoms or an aryl group substituted by C-Calkyl, and at least one of the Rand Rcontains one or more atoms selected from the group consisting of O, N, S, Si and Ge.