Organic light-emitting device

US10026919B2 · kind B2 · utility

Assignee

• E Ink Holdings Inc. · TW

Inventors

• Hsin-Fei Meng · Hsinchu, TW
• Sheng-Fu Horng · Hsinchu, TW
• Hsiao-Wen Zan · Hsinchu, TW
• Hao-Wen Chang · Hsinchu, TW
• Cheng-Hang Hsu · Hsinchu, TW

Key dates

• Filing date: Aug 31, 2017
• Grant date: Jul 17, 2018
• Expiry date: Aug 31, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/1135

Abstract

An organic light-emitting device includes a first electrode, a first light-emitting layer, a first low work function layer, a second low work function layer, a conductive etching-resistant layer, a first hole-injection layer, a second light-emitting layer, and a second electrode. The first light-emitting layer is disposed over the first electrode. The first low work function layer is disposed over the first light-emitting layer. The second low work function layer is disposed over the first low work function layer, and a work function of the second low work function layer is greater than a work function of the first low work function layer. The conductive etching-resistant layer is disposed over the second low work function layer. The first hole-injection layer is disposed over the conductive etching-resistant layer. The second light-emitting layer is disposed over the first hole-injection layer. The second electrode is disposed over the second light-emitting layer.