Organic light-emitting display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10205122-B2
Application number	US-201615298040-A
Country	US
Kind code	B2
Filing date	Oct 19, 2016
Priority date	Nov 20, 2015
Publication date	Feb 12, 2019
Grant date	Feb 12, 2019

Abstract

An organic light-emitting display including a substrate, an insulating layer on the substrate, the substrate and the insulating layer having an opening therethrough penetrating, a pixel array on the insulating layer, the pixel array including a plurality of pixels that surround the opening, a first pixel adjacent to the opening from among the plurality of pixels includes a pixel electrode layer, an intermediate layer on the pixel electrode layer, and an opposite electrode layer on the intermediate layer, and a stepped portion on the substrate and adjacent to the opening, the stepped portion having an under-cut step, wherein the intermediate layer including an organic emission layer, and wherein at least one of the intermediate layer and the opposite electrode layer extends toward the opening and is disconnected by the stepped portion.

First claim

What is claimed is:

1. An organic light-emitting display comprising:
a substrate comprising a first area, a second area surrounding the first area, and a third area between the first area and the second area;
an insulating layer on the substrate, the substrate and the insulating layer having an opening therethrough penetrating, the opening being in the first area;
a pixel array on the insulating layer, the pixel array comprising a plurality of pixels that are in the second area and surround the opening, a first pixel adjacent to the third area from among the plurality of pixels comprises a pixel electrode layer, an intermediate layer on the pixel electrode layer, and an opposite electrode layer on the intermediate layer; and
a stepped portion in the third area to be adjacent to the opening, the stepped portion having an under-cut step and being offset from the second area,
wherein the intermediate layer comprises an organic emission layer, and
wherein at least one of the intermediate layer or the opposite electrode layer extends toward the opening and is disconnected by the stepped portion.

2. An organic light-emitting display comprising:
a substrate;
an insulating layer on the substrate, the substrate and the insulating layer having an opening therethrough penetrating;
a pixel array on the insulating layer, the pixel array comprising a plurality of pixels that surround the opening, a first pixel adjacent to the opening from among the plurality of pixels comprises a pixel electrode layer, an intermediate layer on the pixel electrode layer, and an opposite electrode layer on the intermediate layer; and
a stepped portion on the substrate and adjacent to the opening, the stepped portion having an under-cut step,
wherein the intermediate layer comprises an organic emission layer,
wherein at least one of the intermediate layer or the opposite electrode layer extends toward the opening and is disconnected by the stepped portion,
wherein the insulating layer comprises a recess that is concave in a thickness direction of the insulating layer, and
wherein the stepped portion is within the recess.

3. The organic light-emitting display of claim 2 , wherein the stepped portion comprises:
a first layer within the recess; and
a second layer over the first layer,
wherein a width of an upper portion of the first layer is less than a width of a lower portion of the second layer.

4. The organic light-emitting display of claim 3 , wherein the first layer and the second layer comprise different materials.

5. The organic light-emitting display of claim 3 , wherein the first layer comprises metal.

6. The organic light-emitting display of claim 3 ,
wherein the first pixel further comprises a pixel circuit electrically connected to the pixel electrode layer, and
wherein the pixel circuit comprises a thin film transistor (TFT) comprising a gate electrode, an active layer, a source electrode, and a drain electrode, and the pixel circuit further comprises a storage capacitor comprising a lower electrode and an upper electrode.

7. The organic light-emitting display of claim 6 , wherein the first layer comprises a same material as that of one of the gate electrode, the source electrode, the drain electrode, the lower electrode, and the upper electrode.

8. The organic light-emitting display of claim 3 , wherein the second layer comprises a same material as that of the insulating layer.

9. The organic light-emitting display of claim 3 , wherein a thickness of the first layer is greater than a thickness of at least one of the intermediate layer or the opposite electrode layer.

10. The organic light-emitting display of claim 9 , further comprising a protection layer that covers the at least one of the intermediate layer or the opposite electrode layer.

11. The organic light-emitting display of claim 10 , wherein the protection layer comprises at least one of an organic layer and an inorganic layer, the organic layer comprising organic-inorganic composite particles.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Jonghyun
• Kang Kinyeng
• Kim Sunkwang
• Sim Suyeon

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01L27/3258

  Electricity · mapped topic

• H01L51/5253 Primary

  Electricity · mapped topic

• H01L51/0096

  Electricity · mapped topic

• H10K59/873

  Encapsulations · CPC title