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:
Dec. 31, 2013
Filed:
Jan. 28, 2011
Daisuke Fukushima, Ushiku, JP;
Kazuei Ohuchi, Tsukuba, JP;
Brian Tierney, Cambridgeshire, GB;
Natasha Conway, Cambridgeshire, GB;
Mary Mckiernan, Cambridgeshire, GB;
Daisuke Fukushima, Ushiku, JP;
Kazuei Ohuchi, Tsukuba, JP;
Brian Tierney, Cambridgeshire, GB;
Natasha Conway, Cambridgeshire, GB;
Mary McKiernan, Cambridgeshire, GB;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Cambridge Display Technology Limited, Cambridgeshire, GB;
Abstract
A polymer compound that, when used for fabrication of a light emitting device, results in an excellent luminance lifetime for the obtained light emitting device. A polymer compound comprising a constitutional unit represented by formula (1). (In the formula, Rand Reach independently represent an unsubstituted alkyl group. Rand Reach independently represent a group other than an unsubstituted alkyl group. Rand Reach independently represent an unsubstituted or substituted alkyl, unsubstituted or substituted alkoxy or unsubstituted or substituted aryl group. The letters a and b each independently represent an integer of 0-4. The letters c and d each independently represent an integer of 0-3. When multiple R, R, Rand Rgroups are present, they may be the same or different.)