Display unit with light emitting layer between first and second electrodes

Patent metadata

Field	Value
Publication number	US-11222937-B2
Application number	US-201816133014-A
Country	US
Kind code	B2
Filing date	Sep 17, 2018
Priority date	Feb 6, 2014
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A display unit includes: a drive wire; a planarization layer covering the drive wire and having a connection hole; a relay electrode provided on the planarization layer and configured to be electrically connected to the drive wire through the connection hole; a filling member made of an insulating material and provided in the connection hole; a first partition wall made of a same material as that of the filling member and covering an end of the relay electrode; a first electrode covering the filling member and configured to be electrically connected to the relay electrode; a second electrode facing the first electrode; and a functional layer located between the first electrode and the second electrode, the functional layer including a light-emitting layer.

First claim

What is claimed is:

1. A display unit comprising:
a drive wire;
a first insulating layer covering the drive wire and in direct contact with at least a portion of the drive wire, the first insulating layer including a first connection hole;
a first metal wire provided on the first insulating layer and configured to be electrically connected to the drive wire through the connection hole;
a filling member made of an insulating material, the filling member including an upper surface with a convex portion above the first metal wire and being provided in the first connection hole;
a first electrode covering the filling member over the convex portion of the filling member, the first electrode being configured to be in direct contact with and electrically connected to the first metal wire at two locations on opposing sides of the first connection hole in a cross-section perspective;
a second insulating layer directly atop and in direct contact with the first insulating layer and an end of the first metal wire, the second insulating layer being arranged so as to not be in direct contact with the first electrode and the filling member in the cross-section perspective;
a second electrode facing the first electrode; and
a functional layer located between the first electrode and the second electrode, the functional layer including a light-emitting layer and a hole injection layer, wherein the hole injection layer is above the second insulating layer.

2. The display unit according to claim 1 , wherein the first metal wire and a second metal wire face each other with a third insulating layer in between, thereby forming a capacitor.

3. The display unit according to claim 2 , wherein the first insulating layer includes a second connection hole, and the first metal wire and the filling member cover the second connection hole.

4. The display unit according to claim 2 , further comprising a fourth insulating layer covering the second electrode.

5. The display unit according to claim 1 , wherein the light-emitting layer emits a white light.

6. The display unit according to claim 1 , wherein a voltage of the first metal wire is the same as a voltage of the first electrode.

7. The display unit according to claim 1 , further comprising a substrate under the drive wire.

8. The display unit according to claim 7 , wherein the substrate is formed of at least one of a glass material, a plastic material, a silicon, a resin, or a metal film.

9. The display unit according to claim 7 , wherein the substrate is formed of a flexible material.

10. An electronic apparatus provided with a display unit, the display unit comprising:
a drive wire;
a first insulating layer covering the drive wire and in direct contact with at least a portion of the drive wire, the first insulating layer including a first connection hole;
a first metal wire provided on the first insulating layer and configured to be electrically connected to the drive wire through the connection hole;
a filling member made of an insulating material, the filling member including an upper surface with a convex portion above the first metal wire and being provided in the first connection hole;
a first electrode covering the filling member over the convex portion of the filling member, the first electrode being configured to be in direct contact with and electrically connected to the first metal wire at two locations on opposing sides of the first connection hole in a cross-section perspective;
a second insulating layer directly atop and in direct contact with the first insulating layer and an end of the first metal wire, the second insulating layer being arranged so as to not be in direct contact with the first electrode and the filling member in the cross-section perspective;
a second electrode facing the first electrode; and
a functional layer located between the first electrode and the second electrode, the functional layer including a light-emitting layer and a hole injection layer, wherein the hole injection layer is above the second insulating layer.

11. The electronic apparatus according to claim 10 , wherein the first metal wire and a second metal wire face each other with a third insulating layer in between, thereby forming a capacitor.

12. The electronic apparatus according to claim 11 wherein the first insulating layer includes a second connection hole, and the first metal wire and the filling member cover the second connection hole.

13. The electronic apparatus according to claim 11 , the display unit further comprising a fourth insulating layer covering the second electrode.

14. The electronic apparatus according to claim 10 , wherein the light-emitting layer emits a white light.

15. The electronic apparatus t according to claim 10 , wherein a voltage of the first metal wire is the same as a voltage of the first electrode.

16. The electronic apparatus according to claim 10 , the display unit further comprising a substrate under the drive wire.

17. The electronic apparatus according to claim 16 , wherein the substrate is formed of at least one of a glass material, a plastic material, a silicon, a resin, or a metal film.

18. The electronic apparatus according to claim 16 , wherein the substrate is formed of a flexible material.

Assignees

• Sony Group Corp

Inventors

• Teraguchi Shinichi
• Negishi Eisuke
• Kudo Shuji

Classifications

• H10K59/878

  comprising reflective means · CPC title

• H10K59/80524

  Transparent cathodes, e.g. comprising thin metal layers · CPC title

• H10K59/80518

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

• H01L51/5234

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic