Electro-optical device and electronic device

Patent metadata

Field	Value
Publication number	US-2025024738-A1
Application number	US-202418766667-A
Country	US
Kind code	A1
Filing date	Jul 9, 2024
Priority date	Jul 11, 2023
Publication date	Jan 16, 2025
Grant date	—

Abstract

An electro-optical device includes reflective electrodes having light reflectivity and being adjacent to each other along an X direction, pixel electrodes being formed of TiN and being adjacent to each other along the X direction, an optical adjustment layer, a pixel separation layer opening in an opening portion Ap_R with respect to the pixel electrode and opening in an opening portion Ap_G with respect to the pixel electrode, a common electrode, and an organic layer being provided between the common electrode and the pixel electrode. An end P 1 of the opening portion Ap_R, an end P 2 of the reflective electrode, and an end P 3 of the pixel electrode are positioned in the stated order along the X direction, and an end P 4 of the opening portion Ap_G, an end P 5 of the reflective electrode, and an end P 6 of the pixel electrode are positioned in the stated order along a direction opposite to the X direction.

First claim

What is claimed is:

1 . An electro-optical device comprising:
a first reflection layer and a second reflection layer having light reflectivity and being adjacent to each other along a first direction in plan view; a first pixel electrode and a second pixel electrode being formed of a metal nitride and being adjacent to each other along the first direction in plan view; a first optical adjustment layer having an insulating property and optical transparency and being provided between the first reflection layer and the first pixel electrode; a second optical adjustment layer having an insulating property and optical transparency and being provided between the second reflection layer and the second pixel electrode; an insulating layer opening in a first opening portion to the first pixel electrode in plan view and opening in a second portion to the second pixel electrode in plan view; a common electrode; and an organic layer being provided between the common electrode, and the insulating layer, the first pixel electrode, or the second pixel electrode, and including a light emitting layer, wherein in plan view, an end of ends of the first opening portion that is adjacent to the second opening portion is a first end, an end of ends of the first reflection layer that is adjacent to the second reflection layer is a second end, an end of ends of the first pixel electrode that is adjacent to the second pixel electrode is a third end, an end of ends of the second opening portion that is adjacent to the first opening portion is a fourth end, an end of ends of the second reflection layer that is adjacent to the first reflection layer is a fifth end, and an end of ends of the second pixel electrode that is adjacent to the first pixel electrode is a sixth end, the first end, the second end, and the third end are positioned in the stated order along the first direction from the first opening portion to the second opening portion, and the fourth end, the fifth end, and the sixth end are positioned in the stated order along the first direction from the second opening portion to the first opening portion.

2 . The electro-optical device according to claim 1 , comprising:
a third reflection layer having light reflectivity and being adjacent to the first reflection layer along a second direction intersecting with the first direction in plan view; and a third pixel electrode being formed of a metal nitride and being adjacent to the first pixel electrode along the second direction in plan view, wherein the first optical adjustment layer is provided between the third reflection layer and the third pixel electrode, the insulating layer opens in a third opening portion to the third pixel electrode in plan view, the light emitting layer is provided between the insulating layer or the third pixel electrode, in plan view, an end of ends the third opening portion that is adjacent to the first opening portion is a seventh end, an end of ends of the third reflection layer that is adjacent to the first reflection layer is an eighth end, and an end of ends of the third pixel electrode that is adjacent to the first pixel electrode is a ninth end, and the seventh end, the eighth end, and the ninth end are positioned in the stated order along the second direction from the third opening portion to the first opening portion.

3 . The electro-optical device according to claim 1 , wherein
in plan view, a width between the second end and the third end along the first direction is larger than a width between the first end and the second end.

4 . The electro-optical device according to claim 1 , wherein
in plan view, a width between the second end and the third end along the first direction is larger than a width between the third end and the sixth end.

5 . The electro-optical device according to claim 1 , wherein
the organic layer contacts the first pixel electrode and the second pixel electrode, and includes a hole injection layer being composed of HAT-CN.

6 . The electro-optical device according to claim 1 , wherein
a thickness of the first pixel electrode and a thickness of the second pixel electrode are equal to or larger than 5 nm and smaller than 20 nm.

7 . An electronic apparatus comprising the electro-optical device according to claim 1 .

Assignees

• Seiko Epson Corp

Inventors

• Hamade Yuiga

Classifications

• H10K59/878 Primary

  comprising reflective means · CPC title

• H10K59/876

  comprising a resonant cavity structure, e.g. Bragg reflector pair · CPC title

• H10K59/875

  Arrangements for extracting light from the devices · CPC title

• H10K59/80518 Primary

  Reflective anodes, e.g. ITO combined with thick metallic layers · CPC title

• H10K59/805

  Electrodes · CPC title