IP Library › Granted Patent US 10,877,279
Granted Patent B2
US 10,877,279 · App. 16/507,129 · Granted Dec 29, 2020

Electro-optical apparatus and electronic device

Inventor: Takeshi Koshihara (Matsumoto, JP)
Assignee: SEIKO EPSON CORPORATION
G02B27/0172H01L27/3211H01L51/5218H01L51/5265H01L51/5271G02B30/00
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Quick Facts
Patent No.
US 10,877,279
App. No.
16/507,129
Granted
Dec 29, 2020
Kind
B2
Abstract

There is provided an electro-optical apparatus including an element substrate that includes a display region in which a plurality of pixels, which are light-emitting elements, are arranged in a matrix form. The light-emitting element has a structure in which a reflective electrode, a protective layer, an optical path adjustment layer, a first electrode, a light-emitting layer, and a second electrode are laminated on an insulation layer. The reflective electrode is disposed by being split in each pixel, and a gap is formed between each reflective electrode that is disposed by being split in each pixel. The protective layer covers the surface of the reflective electrode on which the gap is formed, and includes an embedded insulation film which is embedded in the gap.

Claims (51)

1. An electro-optical apparatus comprising:

a first transistor;

a first reflective electrode electrically connected to the first transistor;

a first pixel electrode electrically connected to the first reflective electrode;

a second transistor;

a second reflective electrode electrically connected to the second transistor;

a second pixel electrode electrically connected to the second reflective electrode;

a protective layer that covers a surface of the first reflective electrode and a surface of the second reflective electrode and that includes an embedded insulation between the first reflective electrode and the second reflective electrode;

an optical path adjustment layer disposed between the second reflective electrode and the second pixel electrode;

a counter electrode; and

an organic light emitting layer disposed between the first pixel electrode and the counter electrode and disposed between the second pixel electrode and the counter electrode,

wherein at least a part of the optical path adjustment layer is formed across the first reflective electrode and the second reflective electrode.

2. The electro-optical apparatus according to claim 1 , further comprising:

a first contact electrode, the first reflective electrode being electrically connected to the first pixel electrode via the first contact electrode; and

a second contact electrode, the second reflective electrode being electrically connected to the second pixel electrode via the second contact electrode.

3. The electro-optical apparatus according to claim 2 , the protective layer further comprising:

a first insulation film which is provided between the second reflective electrode and the embedded insulation film; and

a second insulation film which is provided on the first insulation film and the embedded insulation film,

wherein the optical path adjustment layer has an end section positioned on a surface of the second insulation film.

4. The electro-optical apparatus according to claim 3 ,

wherein the second insulation film contains silicon nitride, and

wherein the optical path adjustment layer contains silicon oxide.

5. The electro-optical apparatus according to claim 3 ,

wherein the end section the optical path adjustment layer is positioned above the embedded insulation film.

6. The electro-optical apparatus according to claim 1 ,

wherein a contact hole is formed, the contact hole passing through the optical path adjustment layer and the protective layer, and

wherein the second contact electrode has (a) a first contact section that is connected to the second reflective electrode in a state of being embedded in the contact hole, and (b) a second contact section that is connected to the second pixel electrode in a state of being disposed on a surface of the protective layer.

7. The electro-optical apparatus according to claim 6 ,

wherein an end section of the optical path adjustment layer is positioned on a surface of the second contact section.

8. The electro-optical apparatus according to claim 1 ,

wherein a reflection enhancing layer is disposed on the surface of the first reflective electrode and the surface of the second reflective electrode.

9. An electronic device comprising:

the electro-optical apparatus according to claim 1 .

10. An electro-optical apparatus having a first pixel and a second pixel, the electro-optical apparatus comprising:

a substrate;

a counter electrode;

a light-emitting layer disposed between the counter electrode and the substrate;

a protective layer disposed between the light-emitting layer and the substrate;

a first reflective electrode disposed between the protective layer and the substrate in the first pixel;

a first pixel electrode disposed between the light-emitting layer and the first reflective electrode in the first pixel;

a second reflective electrode disposed between the protective layer and the substrate in the second pixel, the surface of the first reflective electrode and second reflective electrode being covered by the protective layer;

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

an optical path adjustment layer disposed between the second reflective electrode and the second pixel electrode; and

an embedded insulation film disposed between the first reflective electrode and second reflective electrode,

wherein at least a portion of the optical path adjustment layer is formed across the first pixel and the second pixel.

11. The electro-optical apparatus according to claim 10 ,

wherein the embedded insulation film is disposed between the protective layer and at least part of the optical path adjustment layer.

12. The electro-optical apparatus according to claim 10 ,

wherein an end section of at least a portion of the optical path adjustment layer is positioned above the embedded insulation film.

13. An electronic device comprising:

the electro-optical apparatus according to claim 10 .

Priority Claims (1)
JP 2014-262962 · Dec 25, 2014 · national
Continuity (3)
Continuation 16199901 · Nov 26, 2018
Division 14958258 · Dec 3, 2015
Related Publication 20190331926A1 · Oct 31, 2019