IP Library Granted Patent US 9,853,252
Granted Patent B2
US 9,853,252 · App. 15/413,859 · Granted Dec 26, 2017

Light-emitting device, electronic equipment, and process of producing light-emitting device

Inventors: Hidekazu Kobayashi (Azumino, JP); Koya Shiratori (Matsumoto, JP); Atsushi Yoshioka (Chino, JP)
Assignee: SEIKO EPSON CORPORATION
H01L51/56H01L51/0021H01L51/5092H01L51/5203H01L51/5271
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Quick Facts
Patent No.
US 9,853,252
App. No.
15/413,859
Granted
Dec 26, 2017
Kind
B2
Abstract

A light-emitting device includes a light-reflecting layer, a first electrode disposed on or above the light-reflecting layer, a semi-transparent reflective second electrode, a light-emitting function layer disposed between the first electrode and the second electrode, and an electron-injection layer disposed between the light-emitting function layer and the second electrode. The second electrode is made of an Ag alloy having an Ag content of from 50% by atoms to 98% by atoms.

Claims (9)

1. A method for manufacturing a light-emitting device, the method comprising:

forming a light-reflecting layer disposed above a substrate;

forming a first electrode disposed on or above the light-reflecting layer;

forming a light-emitting function layer disposed on or above the first electrode;

forming an electron-injection layer disposed on the light-emitting function layer; and

forming a second electrode on the electron-injection layer,

wherein the forming the second electrode is performed by co-depositing Mg and Ag at a deposition rate ratio of Mg to Ag in the range of 1:20 to 1:50.

2. A method for manufacturing a light-emitting device according to claim 1 , wherein the second electrode has a thickness in a range 10 nm to 30 nm.

3. A method for manufacturing a light-emitting device according to claim 1 , wherein the electron-injection layer is made of LiF.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 12, 2023
From: SEIKO EPSON CORPORATION
To: LUMITEK DISPLAY TECHNOLOGY LIMITED
Reel/Frame 065221/0372 →
Priority Claims (4)
JP 2008-219266 · Aug 28, 2008 · national
JP 2008-291997 · Nov 14, 2008 · national
JP 2008-291998 · Nov 14, 2008 · national
JP 2009-158522 · Jul 3, 2009 · national
Continuity (3)
Continuation 15085313 · Mar 30, 2016
Division 12547070 · Aug 25, 2009
Related Publication 20170149021A1 · May 25, 2017