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:
Aug. 10, 2021
Filed:
Mar. 13, 2018
Applicant:
Japan Display Inc., Minato-ku, JP;
Inventor:
Hironori Toyoda, Minato-ku, JP;
Assignee:
Japan Display Inc., Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/56 (2006.01); H01L 27/32 (2006.01); H01L 51/52 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
H01L 51/506 (2013.01); H01L 27/322 (2013.01); H01L 27/3246 (2013.01); H01L 51/002 (2013.01); H01L 51/5012 (2013.01); H01L 51/5064 (2013.01); H01L 51/5072 (2013.01); H01L 51/5092 (2013.01); H01L 51/5096 (2013.01); H01L 51/524 (2013.01); H01L 51/5218 (2013.01); H01L 51/5234 (2013.01); H01L 51/56 (2013.01); H01L 2251/5346 (2013.01); H01L 2251/558 (2013.01);
Abstract
To provide a display device including a light emitting element layer including an anode electrode, a light emissive layer formed on the anode electrode, and a cathode electrode formed on the light emissive layer, and a bank formed on the lower electrode and having an opening, in which the lower electrode is partially exposed, wherein the light emissive layer includes a p-doped hole transport layer containing p-dopant, and the p-doped hole transport layer contains a larger amount of p-dopant in an area close to an end portion of the opening of the bank than the amount of p-dopant contained in other areas.