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. 14, 2006
Filed:
Oct. 14, 2003
Tomoyasu Sunaga, Kanuma, JP;
Junichi Ishll, Kanuma, JP;
Susumu Yanagibori, Kanuma, JP;
Miyuki Tsukioka, Kanuma, JP;
Tomoyasu Sunaga, Kanuma, JP;
Junichi Ishll, Kanuma, JP;
Susumu Yanagibori, Kanuma, JP;
Miyuki Tsukioka, Kanuma, JP;
Sony Corporation, Tokyo, JP;
Sony Chemical & Information Device Corporation, Tokyo, JP;
Abstract
An electroluminescent polymer which has repeating units represented by formula (1) is obtained by polymerizing a bisfluorenylsilane compound which has specified substituent groups. In spite of the fact that this electroluminescent polymer is a π-σ conjugated type fluorene polymer, the deterioration in the color purity of EL caused by excimer formation is suppressed, so that the color purity of blue emitted light in particular is extremely high. This electroluminescent polymer is extremely useful as a light-emitting material in organic electroluminescent elements.