Organic electroluminescent device emitting blue light

US11844276B2 · kind B2 · utility

Assignee

• SAMSUNG ELECTRONICS CO., LTD. · KR

Inventors

• Georgios Liaptsis · Mannheim, DE
• Christian KASPAREK · Heidelberg, DE
• Harald FLUEGGE · Karlsruhe, DE
• Sandra BONUS · Cologne, DE
• Patrick Pingel · Potsdam, DE
• Jaime LEGANES CARBALLO · Heidelberg, DE
• Irina Roerich · Mannheim, DE

Key dates

• Filing date: Sep 30, 2022
• Grant date: Dec 12, 2023
• Expiry date: Sep 30, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/30

Abstract

The present invention relates to organic electroluminescent devices comprising a light-emitting layer B comprising a host material HB, a first thermally activated delayed fluorescence (TADF) material EB, and a depopulation agent SB.