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. 24, 2009
Filed:
Feb. 23, 2005
Liang-sheng Liao, Rochester, NY (US);
Wojciech K. Slusarek, Rochester, NY (US);
Tukaram K. Hatwar, Penfield, NY (US);
Michele L. Ricks, Rochester, NY (US);
Dustin L. Comfort, Webster, NY (US);
Liang-Sheng Liao, Rochester, NY (US);
Wojciech K. Slusarek, Rochester, NY (US);
Tukaram K. Hatwar, Penfield, NY (US);
Michele L. Ricks, Rochester, NY (US);
Dustin L. Comfort, Webster, NY (US);
Eastman Kodak Company, Rochester, NJ (US);
Abstract
A tandem OLED includes an anode and a cathode. The OLED also includes at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer. An intermediate connector is disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer, the electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, and wherein the electron-accepting layer includes one or more organic materials, each having a reduction potential greater than −0.5 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials constitute more than 50% by volume of the electron-accepting layer.