Inorganic electroluminescence device driven by direct current

• US 20070080631A1
• Filed: 10/11/2005
• Published: 04/12/2007
• Est. Priority Date: 10/11/2005
• Status: Active Grant

• Current Assignee: Kuraray Company Limited
• Original Assignee: T Chatani Company Limited
• Inventors: Ueda, Tadashi, Kanamori, Jiro, Hayashi, Yoshisada, Yamauchi, Seikoh
• Granted Patent: US 8,258,690 B2
• Time in Patent Office: Days
• US Class Current: 313/506
• CPC Class Codes: C09K 11/7428 Halogenides C09K11/7407 takes precedence
• CPC Class Codes: H05B 33/145 Arrangements of the electroluminescent material

Abstract

The present invention is characterized by a DC-driven inorganic EL element useful for mobile and other applications, the EL element including at least plural electrode layers, and a light emitter layer made of an inorganic composition, which is provided between the electrode layers, wherein the attainted brightness in the DC drive is 10000 cd/m² or more.

Claims

1. An inorganic EL element comprising at least two electrode layers and a light emitter layer made of an inorganic composition, which is provided between the electrode layers, wherein an attained brightness in the DC drive is 10000 cd/m² or more.

2. The inorganic EL element according to claim 1, wherein the thickness of said EL light emitter layer is 0.05 μ

m or more and 100 μ

m or less.

3. The inorganic EL element according to claim 1 or claim 2, wherein said EL light emitter layer has surfaces between said two layers of electrodes, the two surfaces being made of different compositions.