Organic electroluminescent light source

US8426849B2 · kind B2 · utility

Assignee

• Au Optronics Corporation · TW

Inventors

• Meng-Ting Lee · Hsinchu, TW
• Chang Yen Wu · Beijing, CN
• Chun-Liang Lin · Baoshan, TW
• Chieh-Wei Chen · Taichung, TW

Key dates

• Filing date: Aug 5, 2011
• Grant date: Apr 23, 2013
• Expiry date: Aug 21, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/3031

Abstract

An organic electroluminescent light source including a first organic electroluminescent device and a second organic electroluminescent device is provided. The first organic electroluminescent device is coupled to a first bias voltage to emit a first color light having a color temperature ranging from 2800K to 3500K. The second organic electroluminescent device is coupled to a second bias voltage to emit a second color light. The first color light and the second color light mix to generate a third color light having a color temperature ranging from 3500K to 6500K.