Organic electroluminescent device

US8884278B2 · kind B2 · utility

Assignee

• Kabushiki Kaisha Toshiba · JP

Inventors

• Toshiya Yonehara · Fukuoka, JP
• Tomio Ono · Yokohama, JP
• Tomoaki Sawabe · Taito, JP
• Keiji Sugi · Yokohama, JP
• Daimotsu Kato · Tokyo, JP
• Shintaro Enomoto · Yokohama, JP

Key dates

• Filing date: Dec 28, 2012
• Grant date: Nov 11, 2014
• Expiry date: Dec 28, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/879

Abstract

According to one embodiment, an organic electroluminescence device includes a first electrode, a second electrode, a first organic layer and a second organic layer. The second electrode includes a metal. The first organic layer is provided between the first electrode and the second electrode. The first organic layer is configured to emit light. The second organic layer is provided between the first organic layer and the second electrode. A refractive index of the second organic layer in a thickness direction for the light is lower than a refractive index of the first organic layer for the light.