Display and electronic apparatus

Patent metadata

Field	Value
Publication number	US-9859528-B2
Application number	US-201214362427-A
Country	US
Kind code	B2
Filing date	Nov 1, 2012
Priority date	Dec 9, 2011
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

Provided is a display ( 1 ) including: an insulating layer ( 19 ) having an opening ( 19 M); and a light-emission device ( 10 ) including a functional layer ( 15 ) and provided in the opening of the insulating layer, the functional layer being provided between a first electrode ( 14 ) and a second electrode ( 16 ) and including a light emitting layer. The insulating layer includes a low-refractive-index layer, the low-refractive-index layer being made of a material having a lower refractive index than a refractive index of a layer ( 15 A), and the layer ( 15 A) being in proximity to the insulating layer and included in the functional layer.

First claim

The invention claimed is:

1. A display comprising:
a substrate;
a transistor layer with one or more transistors on the substrate;
a first electrode overlying the transistor layer;
a flattening layer between the transistor layer and the first electrode;
an insulating layer having an opening with an inclined side surface, the opening overlying the first electrode and the one or more transistors;
a light-emission device associated with the opening, the light-emission device including a functional layer in and outside of the opening and overlying the inclined side surface and edge of one end of the opening; and
a second electrode, the functional layer being between the first electrode and the second electrode,
wherein,
the functional layer is comprised of two or more layers all of which are in and outside of the opening and overlying the inclined side surface of the opening,
the insulating layer includes a low-refractive-index layer and a black layer in this order proceeding away from the flattening layer, the low-refractive-index layer is made of material having a refractive index lower than a refractive index of another layer and the black layer contains at least one of black pigment, dye, or coloring matter,
of the layers of the functional layer, the another layer is most proximate to the insulating layer and in contact with the first electrode, and
the first electrode is reflective and the second electrode is transparent such that light from the functional layer is reflected by the first electrode and emitted through the second electrode.

2. The display according to claim 1 , wherein insulating layer is in direct contact with the flattening layer.

3. The display according to claim 1 , wherein a wall surface of the opening of the insulating layer is inclined at an inclination of θ with respect to a surface of the first electrode.

4. The display according to claim 3 , wherein the inclination of θ is an acute angle.

5. The display according to claim 1 , wherein the first electrode and the functional layer are in contact with each other in the opening of the insulating layer.

6. The display according to claim 1 , wherein the black layer is made of a photosensitive resin in which the black pigment, dye, or coloring matter is dispersed.

7. The display according to claim 1 , further comprising:
a first substrate on a side of the first electrode and a second substrate on a side of the second electrode,
wherein,
the light-emission device is between the first and second substrates, and
the substrate is made of a flexible material.

8. The display according to claim 1 , wherein the functional layer is configured of an organic material.

9. An electronic apparatus provided with a display according to claim 1 .

10. The display of claim 1 , wherein: one of the transistors is connected to first electrode to drive the light emission device, the other of the transistors is connected to drive the one transistor, and the first electrode overlies both transistors.

11. The electronic apparatus of claim 9 , wherein: one of the transistors is connected to first electrode to drive the light emission device, the other of the transistors is connected to drive the one transistor, and the first electrode overlies both transistors.

12. A display comprising:
a substrate;
a transistor layer with two transistors on the substrate;
a first electrode overlying the transistor layer;
a flattening layer between the transistor layer and the first electrode;
an insulating layer having an opening with an inclined side surface, the opening overlying the first electrode and the two transistors, the first electrode and a second electrode overlapping opposite ends of the opening; and
a light-emission device associated with the opening, the light-emission device including a functional layer in and outside of the opening and overlying the inclined side surface and an edge of one of the ends of the opening, the functional layer including at least two layers including a light emitting layer and a hole injection layer,
wherein,
all layers of the functional layer are in and outside of the opening and overlying the inclined side surface of the opening,
the insulating layer includes a low-refractive-index layer and a black layer in this order proceeding away from the flattening layer, the low-refractive-index layer comprises a low-refractive-index material having a refractive index lower than a refractive index of the hole injection layer and the black layer contains at least one of black pigment, dye, or coloring matter,
of the layers of the functional layer, the hole injection layer is most proximate the insulating layer and in contact with the first electrode,
the first electrode is reflective and the second electrode is transparent such that light from the functional layer is reflected by the first electrode and emitted through the second electrode,
one of the transistors is connected to first electrode to drive the light emission device,
the other of the transistors is connected to drive the one transistor, and
the first electrode overlies both transistors.

Assignees

• Joled Inc

Inventors

• Noda Makoto
• Katsuhara Mao

Classifications

• H01L51/5012

  Electricity · mapped topic

• H01L27/32

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic

• H01L51/5284

  Electricity · mapped topic

• H01L51/5275 Primary

  Electricity · mapped topic