Organic electroluminescent device and display including the same

US10170704B2 · kind B2 · utility

Assignee

• SAMSUNG ELECTRONICS CO., LTD. · KR

Inventors

• Eonseok Oh · Yongin-si, KR
• Sangyeol Kim · Yongin-si, KR
• Jungyeon Kim · Suwon-si, KR
• Minkyoung Jo · Seoul, KR
• Bomi Choi · Seoul, KR

Key dates

• Filing date: May 5, 2016
• Grant date: Jan 1, 2019
• Expiry date: Jul 26, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/351

Abstract

An organic electroluminescent device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region. The electron transport region includes a first electron transport layer on the emission layer; and a second electron transport layer on the first electron transport layer. An absolute value of difference between a highest occupied molecular orbital (HOMO) energy level of the emission layer and a HOMO energy level of the first electron transport layer is about 0.3 eV to about 1.5 eV.