Organic el element, and display device, imaging apparatus, lighting device, and movable body including the same

US10937979B2 · kind B2 · utility

Assignee

• Canon Kabushiki Kaisha · JP

Inventors

• Naoki Yamada · Tokyo, JP
• Itaru Takaya · Chiba, JP
• Jun Kamatani · Tokyo, JP
• Hirokazu Miyashita · Tokyo, JP

Key dates

• Filing date: Apr 24, 2019
• Grant date: Mar 2, 2021
• Expiry date: Apr 24, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/40

Abstract

An organic EL element includes a first electrode, a first luminescent layer, a second luminescent layer, a third luminescent layer, and a second electrode, in this order. The second luminescent layer is in contact with the first luminescent layer and the third luminescent layer. The first luminescent layer contains a red dopant and a first host material. The second luminescent layer contains a blue dopant and a second host material, and the third luminescent layer contains a green dopant and the second host material. The second host material is different from the first host material.