IP Library Granted Patent US 7,633,222
Granted Patent B2
US 7,633,222 · App. 11/470,726 · Granted Dec 15, 2009

Electroluminescence device, an electronic equipment, and methods of manufacturing the same

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Quick Facts
Patent No.
US 7,633,222
App. No.
11/470,726
Granted
Dec 15, 2009
Kind
B2
Abstract

An electroluminescence device having a positive electrode, a negative electrode, a luminescent layer, and a buffer layer. The luminescent layer is disposed between the positive electrode and the negative electrode. The buffer layer is disposed between the luminescent layer and the negative electrode, where the buffer layer is a plasma polymerized film made of a gas material and having an average thickness of equal to or less than 30 Å.

Claims (10)

1. An electroluminescence device comprising:

a positive electrode;

a negative electrode;

a luminescent layer disposed between the positive electrode and the negative electrode; and

a buffer layer disposed between the luminescent layer and the negative electrode, the buffer layer being a plasma polymerized film made of gas material and having an average thickness of equal to or less than 30 Å.

2. The electroluminescence device according to claim 1 , further comprising an electron injection layer between the negative electrode and the buffer layer.

3. The electroluminescense device according to claim 2 , wherein the buffer layer is in contact with the electron injection layer.

4. The electroluminescence device according to claim 1 , wherein the buffer layer includes fluorocarbon.

5. An electronic equipment comprising the electroluminescence device according to claim 1 .

6. The electroluminescence device according to claim 1 , wherein the buffer layer is in contact with the negative electrode.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2022
From: EL TECHNOLOGY FUSION GODO KAISHA
To: ELEMENT CAPITAL COMMERCIAL COMPANY PTE. LTD.
Reel/Frame 059435/0428 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 31, 2018
From: SEIKO EPSON CORPORATION
To: EL TECHNOLOGY FUSION GODO KAISHA
Reel/Frame 047998/0879 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 7, 2006
From: MAKIURA, RIE
To: SEIKO EPSON CORPORATION
Reel/Frame 018238/0349 →