The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2002
Filed:
Oct. 30, 2001
Chiu-Fen Tseng, Hsin-Cheng Hsiang, TW;
Lai-Cheng Chen, Taipei, TW;
Chih-Chiang Huang, Taoyuan Hsien, TW;
Mao-Cheng Weng, Taoyuan Hsien, TW;
Delta Optoelectronics, Inc., Hsinchu, TW;
Abstract
A method of fabricating an organic light emitting diode. A fluid is sprayed from a nozzle to dissolve organic material or a water-soluble material to be removed from a multi-layer structure of organic luminescent layer, hole transport layer, hole injection layer, electron transport layer and electron injection layer on a substrate. Using an air venting or pumping system such as a vacuum system, the dissolved organic or water-soluble material is removed. The multi-layer structure of organic luminescent layer, hole transport layer, hole injection layer, electron transport layer and electron injection layer can be patterned. After patterning, a step of encapsulation is performed. Thereby, the multi-layer structure is wrapped insulated from oxygen and water. The possibility for the cathode to react with oxygen or water molecules is reduced, and the device lifetime is effectively increased.