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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 12016191 B1

PDFFull Text
Date of Patent:
Jun. 18, 2024

Filed:

Jun. 07, 2021

Electronic device including a light-emitting element having functional layers with thickness profiles

Applicant:

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

Inventors:

Soohyun Park, Seoul, KR;

Donghoon Kwak, Hwaseong-si, KR;

Seulgi Han, Suwon-si, KR;

Assignee:

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

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Peter Bradford

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 27/32 (2006.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/17 (2023.01); H10K 59/122 (2023.01); H10K 59/35 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/15 (2023.02); H10K 50/11 (2023.02); H10K 50/17 (2023.02); H10K 59/122 (2023.02); H10K 59/35 (2023.02); H10K 2101/40 (2023.02); H10K 2102/351 (2023.02);
Abstract

An electronic device includes a base layer, a first electrode disposed on the base layer, a pixel defining layer disposed on the base layer and having an opening that exposes an upper surface of the first electrode, a hole transport region disposed in the opening and having a thickness that gradually decreases from a center of the opening toward a side surface of the pixel defining layer, an emission layer disposed on the hole transport region and having a thickness that gradually increases from the center of the opening toward the side surface of the pixel defining layer, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. This electronic device may increase a light-emitting area exhibiting uniform (or substantially uniform) light-emitting characteristics and exhibit high light-emitting efficiency.

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