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:
Nov. 15, 2011
Filed:
May. 16, 2008
William J. Begley, Webster, NY (US);
Tukaram K. Hatwar, Penfield, NY (US);
Joseph C. Deaton, Rochester, NY (US);
Christopher T. Brown, Rochester, NY (US);
Natasha Andrievsky, Webster, NY (US);
Marina E. Kondakova, Kendall, NY (US);
William J. Begley, Webster, NY (US);
Tukaram K. Hatwar, Penfield, NY (US);
Joseph C. Deaton, Rochester, NY (US);
Christopher T. Brown, Rochester, NY (US);
Natasha Andrievsky, Webster, NY (US);
Marina E. Kondakova, Kendall, NY (US);
Global OLED Technology LLC, Herndon, VA (US);
Abstract
An OLED device comprising, in sequence, an anode, a light-emitting layer that comprises a phosphorescent light-emitting organometallic compound, a hole-blocking layer, and a cathode, and between the hole-blocking layer and the cathode, a further layer containing a mixture of a first compound that is a tetracene compound that has the lowest LUMO value of the compounds in the layer, in an amount greater than or equal to 10% and less than 90% and a second compound that is a low voltage electron transport material, exhibiting a higher LUMO value than the first compound in an amount less than or equal to 90% and more than 10%.