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:
Apr. 20, 2021
Filed:
Oct. 13, 2011
Natasha M. J. Conway, Cambridgeshire, GB;
Jonathan Pillow, Stotfold, GB;
Thomas Pounds, Cambridgeshire, GB;
Fredrik Jakobsson, Cambridgeshire, GB;
Christian Nielsen, London, GB;
Natasha M. J. Conway, Cambridgeshire, GB;
Jonathan Pillow, Stotfold, GB;
Thomas Pounds, Cambridgeshire, GB;
Fredrik Jakobsson, Cambridgeshire, GB;
Christian Nielsen, London, GB;
Cambridge Display Technology, Ltd., Godmanchester, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Abstract
Light-emitting composition and devices including the same, the composition including a fluorescent light-emitting material and a polymer having a conjugating repeat unit and a non-conjugating repeat unit in a backbone of the polymer, and in which the conjugating repeat unit provides at least one conjugation path between repeat units linked to it; the non-conjugating repeat unit reduces conjugation of the polymer as compared to a polymer in which the non-conjugating repeat unit is absent; and a triplet excited state energy level of the light-emitting material is higher than a triplet excited state energy level of the non-conjugating repeat unit.