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:
Jun. 25, 2019
Filed:
Dec. 19, 2017
Applicant:
Lg Display Co., Ltd., Seoul, KR;
Inventors:
Assignee:
LG Display Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/32 (2006.01); H01L 51/50 (2006.01); H01L 51/52 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5275 (2013.01); H01L 51/5004 (2013.01); H01L 27/3244 (2013.01); H01L 51/5268 (2013.01); H01L 2251/5369 (2013.01); H01L 2251/558 (2013.01);
Abstract
An electroluminescent display device includes a substrate; a first electrode on the substrate; a hole auxiliary layer on the first electrode; a light emitting material layer on the hole auxiliary layer; an electron auxiliary layer on the light emitting material layer; a second electrode on the electron auxiliary layer; and insulation layers between the hole auxiliary layer and the light emitting material layer and between the electron auxiliary layer and the light emitting material layer, wherein a refractive index of the insulation layers is smaller than a refractive index of the light emitting material layer.