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. 02, 2003
Filed:
Jun. 28, 2001
Xiaobo Shi, Poughquag, NY (US);
Igor Sokolik, Verbank, NY (US);
eMagin Corporation, Hopewell Junction, NY (US);
Abstract
The present invention relates to multi-layered organic light emitting diode devices having hole-injection and/or hole-transport layers comprising aryl amine compounds with relatively high glass transition temperatures (i.e., thermostable aryl amine compounds). Such multi-layered OLED devices allow for a staircase change in the energy difference of holes and electrons as they migrate from the electrodes toward the emitter layer, resulting in a lower operating voltage and a high quantum yield of luminescence for a given current density. The present invention also relates to microdisplay devices comprising multi-layered organic light emitting diode devices having hole-injection and/or hole-transport layers comprising thermostable aryl amine compounds.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile