IP Library › Granted Patent US 7,122,845
Granted Patent B2
US 7,122,845 · App. 11/080,391 · Granted Oct 17, 2006

Light-emitting device, method of manufacturing the same, and electronic apparatus

Assignee: Seiko Epson Corporation
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Quick Facts
Patent No.
US 7,122,845
App. No.
11/080,391
Granted
Oct 17, 2006
Kind
B2
Abstract

The invention enhances or optimizes chromaticity of light in a light-emitting device that includes light-emitting layers. A light-emitting device includes light-emitting layers and electrode layers. The light extracted from the light-emitting device includes the light, which is incident from the light-emitting layers to the electrode layers. The film thicknesses of the electrode layers (transparent layers) are set so that the chromaticity of the extracted light approaches a predetermined value.

Claims (40)

1. A light-emitting device, comprising:

a first electrode;

a second electrode;

a first light-emitting layer disposed between the first electrode and the second electrode;

a third electrode;

a fourth electrode; and

a second light-emitting layer disposed between the third electrode and the fourth electrode,

the second electrode including a first reflective layer to reflect the light and a first transparent layer disposed between the first light-emitting layer and the first reflective layer,

the fourth electrode including a second reflective layer to reflect the light and a second transparent layer disposed between the second light-emitting layer and the second reflective layer, and

the thickness of the first transparent layer being different from that of the second transparent layer.

2. A light-emitting device, comprising:

a substrate;

a first electrode disposed above the substrate;

a first light-emitting layer disposed above the first electrode;

a second electrode disposed above the first light-emitting layer;

a third electrode disposed above the substrate;

a second light-emitting layer disposed above the third electrode; and

a fourth electrode disposed above the second light-emitting layer,

the second electrode including a first reflective layer to reflect the light and a first transparent layer disposed between the first light-emitting layer and the first reflective layer,

the fourth electrode including a second reflective layer to reflect the light and a second transparent layer disposed between the second light-emitting layer and the second reflective layer, and

the thickness of the first transparent layer being different from that of the second transparent layer.

3. A light-emitting device, comprising:

a substrate;

a first electrode disposed above the substrate;

a second electrode disposed above the substrate;

a counter electrode; and

a light-emitting layer disposed between the first electrode and the counter electrode, and disposed between the second electrode and counter electrode,

the counter electrode including a reflective layer to reflect the light, a first transparent layer disposed between the first electrode and the reflective layer, and a second transparent layer disposed between the second electrode and the reflective layer, and

the thickness of the first transparent layer being different from that of the second transparent layer.

4. A light-emitting device, comprising:

a substrate;

a first electrode disposed above the substrate;

a second electrode disposed above the substrate;

a counter electrode; and

a light-emitting layer disposed between the first electrode and counter electrode, and disposed between the second electrode and counter electrode, and

a material layer disposed above both the first, second and counter electrodes,

the light emitted in the light-emitting layers being extracted through the material layer,

the first electrode including a first reflective layer to reflect the light and a first transparent layer disposed between the light-emitting layer and the first reflective layer,

the second electrode including a second reflective layer to reflect the light and a second transparent layer disposed between the light-emitting layer and the second reflective layer, and

the thickness of the first transparent layer being different from that of the second transparent layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 30, 2013
From: SEIKO EPSON CORPORATION
To: INTELLECTUAL KEYSTONE TECHNOLOGY LLC
Reel/Frame 030321/0510 →
Priority Claims (1)
JP 2002-214298 · Jul 23, 2002 · national
Continuity (2)
Continuation 1061584700 · Jul 10, 2003
Related Publication 20050173693A1 · Aug 11, 2005