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:
May. 03, 2022
Filed:
Nov. 28, 2019
Applicants:
Kunshan New Flat Panel Display Technology Center Co., Ltd., Kunshan, CN;
Beijing Visionox Technology Co., Ltd., Beijing, CN;
Assignees:
KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER CO., LTD., Kunshan, CN;
BEIJING VISIONOX TECHNOLOGY CO., LTD., Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/32 (2006.01); H01L 51/50 (2006.01); H01L 51/52 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
H01L 27/3211 (2013.01); H01L 51/50 (2013.01); H01L 51/5004 (2013.01); H01L 51/5088 (2013.01); H01L 51/5218 (2013.01); H01L 51/5221 (2013.01); H01L 51/5265 (2013.01); H01L 51/006 (2013.01); H01L 51/0052 (2013.01); H01L 51/0054 (2013.01); H01L 51/0058 (2013.01); H01L 51/0059 (2013.01); H01L 51/0072 (2013.01); H01L 51/0085 (2013.01); H01L 51/5064 (2013.01); H01L 51/5234 (2013.01); H01L 51/5262 (2013.01); H01L 2251/301 (2013.01); H01L 2251/308 (2013.01); H01L 2251/5315 (2013.01); H01L 2251/552 (2013.01); H01L 2251/558 (2013.01);
Abstract
A top emitting OLED device for improving viewing angle characteristics, comprising a substrate, a first electrode, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, a second electrode and a light output coupling layer sequentially stacked on the substrate, wherein the second electrode has a light transmittance no less than 25%, and the hole injection layer has a refractive index no less than 1.8.