Organic electro-luminescence element and the manufacturing method thereof

Patent 6881501 Issued on April 19, 2005. Estimated Expiration Date:

March 12, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventor

Yudasaka, Ichio

Assignee

Seiko Epson Corporation

Application

No. 09803034 filed on 03/12/2001

US Classes:

428/690, Fluroescent, phosphorescent, or luminescent layer428/917, ELECTROLUMINESCENT428/156, Including variation in thickness428/213, Thickness (relative or absolute)313/504, Organic phosphor313/505, With electrode matrix257/91, With shaped contacts or opaque masking257/99, With housing or contact structure427/66Electroluminescent lamp

Examiners

Primary: Garrett, Dawn

Attorney, Agent or Firm

Oliff & Berridge PLC

Foreign Patent References

08-357028 JP 07/01/1998
A-11-214163 JP 08/01/1999

International Class

H05B033/00

Abstract

The invention increases the outgoing efficiency of light generated in an organic luminous layer of an organic electroluminescence element without decreasing the numerical aperture. A light-transmissive anode electrode layer, an organic luminous layer, and a light-reflective cathode layer are provided on the entire surface of one pixel region. On the anode layer, the organic luminous layer, and the cathode layer, slopes are installed protruding from the anode layer side to the cathode layer side. By this, light generated in the organic luminous layer, and irradiated in parallel to a cumulate surface of a cumulate body, is reflected by the slope on the boundary between the organic luminous layer and the cathode layer and exits toward the anode layer side.