【発明の名称】EL素子およびその製造方法

Japanese Patent JP2780889

B2

PURPOSE:To provide an EL element having excellent electric characteristic and little luminescent unevenness, and a manufacturing method of the EL element. CONSTITUTION:For an EL element, an aluminium foil 1 is formed, on the surface of which an electric insulating layer including a duplex type positive electrode oxide film 7, an EL luminescent layer formed directly on the insulating layer, and a transparent electrode formed on the EL luminescent layer, are formed. For the film 7, the depth of pores 2a is thinned while a barrier layer 6 is thickened by growing the barrier layer 6 on the surface side primarily after oxidating acid positive electrode, and the thickness of the barrier layer of the film is determined 0.1-0.5mum, while the diameter of the pores is no less than 0.05mum, and the depth of the pores is 0.1-0.5mum, for this element Manufacturing method of the EL element includes a process of forming a first duplex type positive electrode oxide film on the surface of the aluminium foil, a process of forming a second duplex type positive electrode film of thin pores 2a and of thick barrier layer 6, and a process of forming the EL luminescent layer and a transparent electrode layer directly on the oxide film.

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Toyoshi Iida
Takahashi Hisashi
Takeshi Tonomura
Yui Fujii
Kenichi Kondo
Takahiro Saida
Shuichi Taya
Yamakawa Sadayoshi
Shunichi Osawa

JP9454492A

July 30, 1998

April 14, 1992

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Stanley Electric Co., Ltd.
Nippon Heavy Chemical Co., Ltd.
Marcon Electronics Co., Ltd.

H05B33/10; H05B33/12; H05B33/26; (IPC1-7): H05B33/26; H05B33/10

JP60205989A
JP448580A

Keishiro Takahashi (2 outside)

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