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.:

US 10269886 B1

Date of Patent:

Apr. 23, 2019

Filed:

Jul. 13, 2016

Organic electroluminescent display device and manufacturing method thereof

Applicant:

Boe Technology Group Co., Ltd., Beijing, CN;

Inventors:

Lung Pao Hsin, Beijing, CN;

Kelvin Chiang, Beijing, CN;

Assignee:

BOE Technology Group Co., Ltd., Beijing, CN;

Attorney:

Banner & Witcoff, Ltd.

Primary Examiner:

Phuc T Dang

Int. Cl.

CPC ...

H01L 27/32 (2006.01); H01L 51/50 (2006.01); H01L 51/52 (2006.01); H01L 27/12 (2006.01);

U.S. Cl.

CPC ...

H01L 27/3262 (2013.01); H01L 27/32 (2013.01); H01L 27/3206 (2013.01); H01L 27/3246 (2013.01); H01L 27/3265 (2013.01); H01L 51/50 (2013.01); H01L 51/5218 (2013.01); H01L 51/5231 (2013.01); H01L 51/5265 (2013.01); H01L 27/1214 (2013.01); H01L 27/322 (2013.01); H01L 2227/323 (2013.01);

Abstract

An organic electroluminescent display device and a manufacturing method thereof are disclosed. The organic electroluminescent display device includes a substrate, a first thin film transistor disposed on the substrate, a second thin film transistor disposed on the first thin film transistor, a first light emitting element electrically connected with a drain of the first thin film transistor, wherein the first light emitting element comprises a first electrode, a first light emitting layer and a second electrode which are stacked, a second light emitting element electrically connected with a drain of the second thin film transistor, wherein the second light emitting element is disposed on the second thin film transistor and comprises a third electrode, a second light emitting layer and a fourth electrode, wherein the second light emitting element is configured to emit white light. By forming the second light emitting element on the second thin film transistor, an original non-display region of the organic electroluminescent display device becomes a display region, as a result, an aperture ratio of the organic electroluminescent display device is increased, and the display effect of the organic electroluminescent display device is improved.

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