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:
Mar. 17, 2009
Filed:
Apr. 28, 2005
Ian D. Parker, Santa Barbara, CA (US);
Chi Zhang, Goleta, CA (US);
Ian D. Parker, Santa Barbara, CA (US);
Chi Zhang, Goleta, CA (US);
E. I. Du Pont De Nemours & Company, Wilmington, DE (US);
Abstract
Multilayer anode structures () for electronic devices () such as polymer light-emitting diodes are described. The multilayer anodes include a high conductivity organic layer () adjacent to the photoactive layer () and a low conductivity organic layer () between the high conductivity organic layer and the anode's electrical connection layer (). This anode structure provides polymer light emitting diodes which exhibit high brightness, high efficiency and long operating lifetime. The multilayer anode structure of this invention provides sufficiently high resistivity to avoid cross-talk in passively addressed pixellated polymer emissive displays; the multilayer anode structure of this invention simultaneously provides long lifetime for pixellated polymer emissive displays.