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. 05, 2021
Filed:
Mar. 07, 2017
Cambridge Display Technology Limited, Godmanchester, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Martin Humphries, Godmanchester, GB;
William Tarran, Godmanchester, GB;
Kiran Kamtekar, Godmanchester, GB;
Philip Stackhouse, Godmanchester, GB;
James Lee, Godmanchester, GB;
Cambridge Display Technology Limited, Godmanchester, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Abstract
A compound of formula (I) wherein Z is a group of formula (II) and Core is selected from groups of formula (IIIa) or (IIIb) wherein X is S or O; Ris a substituent; n is 0 or a positive integer; Arindependently in each occurrence is an arylene group; Ris a substituent; Ris a substituent; Ris an arylene or heteroarylene group; Y is C or Si; a is 1, 2 or 3; b is 0 or a positive integer; and c is 0 or a positive integer. The compound of formula (I) may be used as a host for a light-emitting dopant in an organic light-emitting device.