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:
Feb. 08, 2005
Filed:
Aug. 06, 2003
Xiao-chang Charles LI, Union City, CA (US);
Yoshimasa Okamura, Sunnyvale, CA (US);
Kazunori Ueno, Ebina, JP;
Masashi Tashiro, Los Angeles, CA (US);
Hideki Tashiro, Los Angeles, CA (US);
G. K. Surya Prakash, Los Angeles, CA (US);
Xiao-Chang Charles Li, Union City, CA (US);
Yoshimasa Okamura, Sunnyvale, CA (US);
Kazunori Ueno, Ebina, JP;
Masashi Tashiro, Los Angeles, CA (US);
Hideki Tashiro, Los Angeles, CA (US);
G. K. Surya Prakash, Los Angeles, CA (US);
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A pyrene based compound and its use in an organic light emitting device (OLED) according to the following formula:In the above formula, Zrepresents a hydrogen atom, deuterium atom, oxygen atom, silicon atom, selenium atom, substituted or unsubstituted aryl group, substituted or unsubstituted heteroaryl group, substituted or unsubstituted aryl amine or a combination thereof, and Zrepresents a hydrogen or deuterium atom. One of Yand Yrepresents a hydrogen atom, deuterium atom, oxygen atom, silicon atom, selenium atom, a substituted or unsubstituted aryl group, substituted or unsubstituted heteroaryl group, substituted or unsubstituted aryl amine or a combination thereof, and the other of Yand Yrepresents a hydrogen or deuterium atom. Xthrough Xindependently represent hydrogen atoms, deuterium atoms, alkyl groups or aryl groups, and at least one of Xthrough Xrepresents a bulky alkyl group or bulky aryl group. Also, at least one of Xthrough X, Y, Y, Z, and Zrepresents a deuterium atom. The pyrene based compounds of this invention are useful in emissive layers, hole transport layers, or electron transport layers of an organic light emitting device (OLED). Within these layers, the pyrene based compound can serve directly to constitute the layers or as a host and/or dopant.