Organic light-emitting diode display having multi-mode cavity structure

Patent metadata

Field	Value
Publication number	US-10026797-B2
Application number	US-201514937376-A
Country	US
Kind code	B2
Filing date	Nov 10, 2015
Priority date	Nov 10, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

An organic light-emitting diode (OLED) display can include a substrate configured to have an emission area and a non-emission area defined in the substrate; a thin film transistor disposed in the non-emission area; a first storage capacitor electrode and a second storage capacitor electrode configured to be overlapped in the emission area with a passivation layer interposed between the first and the second storage capacitor electrodes; an overcoat layer configured to cover the thin film transistor and the second storage capacitor electrode; and a first pixel area configured to comprise a first anode electrode and an insulating layer sequentially stacked on the overcoat layer in such a way as to overlap the second storage capacitor electrode and a second anode electrode disposed on the insulating layer and configured to come in contact with the thin film transistor and the first anode electrode.

First claim

What is claimed is:

1. An organic light-emitting diode (OLED) display, comprising:
a substrate configured to have an emission area and a non-emission area defined in the substrate;
a thin film transistor disposed in the non-emission area;
a first storage capacitor electrode and a second storage capacitor electrode configured to be overlapped in the emission area with a passivation layer interposed between the first and second storage capacitor electrodes;
an overcoat layer configured to cover the thin film transistor and the second storage capacitor electrode; and
a first pixel area including a first anode electrode, a second anode electrode, and an insulating layer, the first anode electrode and the insulating layer being sequentially stacked on the overcoat layer in such a way as to overlap the second storage capacitor electrode, and the second anode electrode being disposed on the insulating layer and being in contact with the thin film transistor and the first anode electrode,
wherein the insulating layer is a continuous sheet that covers the entire first anode electrode.

2. The OLED display of claim 1 , further comprising a second pixel area configured to include the second anode electrode disposed on the overcoat layer and connected to the thin film transistor.

3. The OLED display of claim 1 , wherein a plurality of the stacked first anode electrode and insulating layer are provided, and are alternately stacked.

4. The OLED display of claim 1 , wherein the first storage capacitor electrode, the second storage capacitor electrode, the first anode electrode, and the second anode electrode are made of a transparent conductive material.

5. The OLED display of claim 1 , wherein the insulating layer is made of an inorganic insulating material.

6. The OLED display of claim 1 , wherein a refractive index of at least any one of the first storage capacitor electrode, the passivation layer, and the second storage capacitor electrode is different from a refractive index of another of the first storage capacitor electrode, the passivation layer, and the second storage capacitor electrode.

7. The OLED display of claim 1 , wherein a refractive index of at least any one of the first anode electrode, the insulating layer, and the second anode electrode is different from a refractive index of another of the first anode electrode, the insulating layer, and the second anode electrode.

8. The OLED display of claim 1 , further comprising a bank formed to expose the second anode electrode,
wherein the insulating layer contacts the bank.

9. The OLED display of claim 1 , further comprising a color filter disposed in the emission area,
wherein the color filter contacts the second storage capacitor electrode.

10. The OLED display of claim 1 , wherein the first storage capacitor electrode, the second storage capacitor electrode, the first anode electrode, the second anode electrode, and the insulating layer are aligned in the emission area.

Assignees

• Lg Display Co Ltd

Inventors

• Nam Kyoungjin
• Kim Yongmin
• Kim Jeongoh
• Beak Jungsun
• Yun Jeonggi

Classifications

• H01L27/322

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic

• H01L27/3265 Primary

  Electricity · mapped topic

• H01L27/3248

  Electricity · mapped topic

• H01L27/326

  Electricity · mapped topic