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:
Oct. 30, 2018
Filed:
Jul. 08, 2014
Universal Display Corporation, Ewing, NJ (US);
Kent State University, Kent, OH (US);
Yue Cui, Kent, OH (US);
Deng-ke Yang, Hudson, OH (US);
Gregory McGraw, Yardley, PA (US);
Ruiqing Ma, Morristown, NJ (US);
Julia J. Brown, Yardley, PA (US);
Universal Display Corporation, Ewing, NJ (US);
Kent State University, Kent, OH (US);
Abstract
OLED structures including an internal extraction layer are provided. The internal extraction layer includes a material having a refractive index that is higher than the refractive index of a transparent electrode in the device, and a non-planar interface disposed between the material and the substrate. Devices are also provided that include an external extraction layer having a non-planar surface which, when used in conjunction with an internal extraction layer, provides greatly improved outcoupling of light generated by the device.