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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 12232387 B1

PDFFull Text
Date of Patent:
Feb. 18, 2025

Filed:

Nov. 15, 2021

Display apparatus including layer with a plurality of parts having different electrical conductivities on emission layers

Applicant:

Samsung Display Co., Ltd., Yongin-si, KR;

Inventors:

Jaesuk Moon, Yongin-si, KR;

Euigyu Kim, Yongin-si, KR;

Sangmin Yi, Yongin-si, KR;

Sangshin Lee, Yongin-si, KR;

Seungjin Lee, Yongin-si, KR;

Seungju Hong, Yongin-si, KR;

Assignee:

Samsung Display Co., Ltd., Yongin-si, KR;

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Daniel Whalen

Int. Cl.
CPC ...
H10K 59/35 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/19 (2023.01); H10K 59/38 (2023.01); H10K 71/00 (2023.01); H10K 59/122 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 59/35 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/171 (2023.02); H10K 50/19 (2023.02); H10K 59/38 (2023.02); H10K 71/00 (2023.02); H10K 59/122 (2023.02); H10K 59/351 (2023.02); H10K 2102/331 (2023.02);
Abstract

A display apparatus includes: a first pixel electrode of a first pixel; a second pixel electrode of a second pixel adjacent to the first pixel, the first and second pixels to emit light of different colors from each other; a first lower emission layer on the first pixel electrode; a second lower emission layer on the second pixel electrode; a first upper emission layer on the first lower emission layer; a second upper emission layer on the second lower emission layer; a charge generation layer between the first lower emission layer and the first upper emission layer, and between the second lower emission layer and the second upper emission layer; and a counter electrode extending across the first upper emission layer and the second upper emission layer. The charge generation layer includes first and second parts, and electrical conductivities of the first and second parts are different from each other.

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