Organic electroluminescent device having an optical resonator

US7777413B2 · kind B2 · utility

Assignee

• IDEMITSU KOSAN CO., LTD. · JP

Inventors

• Hitoshi Kuma · Sodegaura, JP
• Kenichi Fukuoka · Sodegaura, JP
• Chishio Hosokawa · Sodegaura, JP

Key dates

• Filing date: Mar 7, 2006
• Grant date: Aug 17, 2010
• Expiry date: Jan 18, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/876

Abstract

An organic electroluminescent device including a first electrode (11), a second electrode (16), and an organic material layer (20) interposed therebetween; the second electrode (16) being light-transmissible; the organic material layer (20) having a structure wherein a first carrier transporting layer (12), an organic emitting layer (14) and a second carrier transporting layer (15) are stacked in this order; the organic material layer (20) including a conductive light-reflecting layer (13) therein; and the part between the light-transmissible second electrode (16) and the light-reflecting layer (13) forming an optical resonator enhancing light emitted from the organic emitting layer (14).