Double-sided luminescent organic light emitting device and manufacturing method thereof

US8957409B2 · kind B2 · utility

Assignee

• OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO., LTD. · CN

Inventors

• Mingjie Zhou · Nanhu, CN
• Ping Wang · North Oaks, US
• Xiaoming Feng · Cary, US
• Tietao Zhong · Tangxia, CN

Key dates

• Filing date: Dec 9, 2010
• Grant date: Feb 17, 2015
• Expiry date: Dec 9, 2030

Classification

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

Abstract

Disclosed are a double-sided luminescent organic light emitting device and the manufacturing method thereof. The double-sided luminescent organic light emitting device comprises a transparent substrate (21), an anode (22), a transparent cathode (25), and at least two organic light emitting structures (23a, 23b) and at least a charge-generation layer (24) set between the anode (22) and the transparent cathode (25), and the charge-generation layer (24) is set between the two neighboring organic light emitting structures (23a, 23b), the charge-generation layer (24) and the organic light emitting structures (23a, 23b) are alternately arranged. The charge-generation layer (24) includes an n-type semiconductor layer (241) and a p-type semiconductor (242) layer combined with the n-type semiconductor layer. Said double-sided light emitting organic light emitting device requires low driving current, and has high luminescence efficiency, high brightness, and high light extraction efficiency. In addition, said device enables nearly 360 degrees omnidirectional illumination, enlarges the illumination area and the application range, and has long lifetime, simple preparation procedures and low pr…