Organic light emitting diode display

Patent metadata

Field	Value
Publication number	US-2017005286-A1
Application number	US-201514982417-A
Country	US
Kind code	A1
Filing date	Dec 29, 2015
Priority date	Jul 2, 2015
Publication date	Jan 5, 2017
Grant date	—

Abstract

An organic light emitting diode display including a substrate, a first electrode disposed on the substrate, a second electrode disposed on the substrate and separated from the first electrode, a pixel defining layer disposed on the first electrode and the second electrode, a first organic emission layer disposed on the first electrode corresponding to the first opening, a second organic emission layer disposed on the second electrode corresponding to the second opening, and a common electrode disposed on the first organic emission layer and the second organic emission layer. The first electrode includes a first dent portion. The second electrode includes a second dent portion having a different size from the first dent portion. The pixel defining layer includes a first opening exposing the first electrode corresponding to the first dent portion and a second opening exposing the second electrode corresponding to the second dent portion.

First claim

What is claimed is:

1 . An organic light emitting diode display, comprising:
a substrate; a first electrode disposed on the substrate, the first electrode comprising a first dent portion; a second electrode disposed on the substrate and separated from the first electrode, the second electrode comprising a second dent portion having a different size from the first dent portion; a pixel defining layer disposed on the first electrode and the second electrode, the pixel defining layer comprising a first opening exposing the first electrode corresponding to the first dent portion and a second opening exposing the second electrode corresponding to the second dent portion; a first organic emission layer disposed on the first electrode corresponding to the first opening; a second organic emission layer disposed on the second electrode corresponding to the second opening; and a common electrode disposed on the first organic emission layer and the second organic emission layer.

2 . The organic light emitting diode display of claim 1 , wherein the first opening has a smaller area than the second opening.

3 . The organic light emitting diode display of claim 2 , wherein the first dent portion has an area smaller than the second dent portion.

4 . The organic light emitting diode display of claim 2 , wherein the first dent portion has a smaller volume than the second dent portion.

5 . The organic light emitting diode display of claim 1 , wherein the first dent portion comprises:
a first valley portion; and a surface having a curved shape and extending from the first valley portion to a first peak portion, the first peak portion surrounding the first valley portion.

6 . The organic light emitting diode display of claim 1 , wherein the second dent portion comprises:
a second valley portion; and a surface having a curved shape and extending from the second valley portion to a second peak portion, the second peak portion surrounding the second valley portion.

7 . The organic light emitting diode display of claim 1 , wherein a distance between a surface of the first electrode and the common electrode is a uniform first distance in a direction that is perpendicular to a plate side of the substrate.

8 . The organic light emitting diode display of claim 1 , wherein a distance between a surface of the second electrode and the common electrode is a uniform second distance in a direction that is perpendicular to a plate side of the substrate.

9 . The organic light emitting diode display of claim 1 , wherein the second electrode comprises multiple second dent portions that are separated from each other.

10 . The organic light emitting diode display of claim 1 , wherein the second dent portion has a closed loop shape when viewed from a plan view perspective.

11 . The organic light emitting diode display of claim 1 , further comprising an insulating layer disposed between the substrate and the first electrode, the insulating layer comprising a dented portion corresponding to the first dent portion.

12 . The organic light emitting diode display of claim 1 , further comprising:
a third electrode disposed on the substrate and separated from the first electrode and the second electrode, the third electrode comprises a third dent portion having a size different from the first dent portion; and a third organic emission layer disposed on the third electrode, wherein the pixel defining layer further comprises a third opening for exposing the third electrode corresponding to the third dent portion, the third organic emission layer being disposed in the third opening.

13 . The organic light emitting diode display of claim 12 , wherein:
the first organic emission layer is configured to emit light with a first wavelength, the second organic emission layer is configured to emit light with a second wavelength that is less than the first wavelength, and the third organic emission layer is configured to emit light with a third wavelength that is greater than the first wavelength.

14 . An organic light emitting diode display, comprising:
a substrate; a first electrode disposed on the substrate, the first electrode comprising a dent portion with a curved side; a pixel defining layer disposed on the first electrode, the pixel defining layer comprising an opening for exposing the first electrode corresponding to the dent portion; an organic emission layer disposed on the first electrode corresponding to the opening; and a common electrode disposed on the organic emission layer.

15 . The organic light emitting diode display of claim 14 , wherein the dent portion comprises:
a valley portion; and a surface having a curved side that extends from the valley portion to a peak portion and the peak portion surrounds the valley portion.

16 . The organic light emitting diode display of claim 14 , wherein the curved side has a sine wave cross-sectional shape.

17 . The organic light emitting diode display of claim 14 , wherein a surface of the dent portion is formed as the curved side.

18 . The organic light emitting diode display of claim 14 , wherein a distance between a surface of the first electrode and the common electrode is uniform in a direction that is perpendicular to a plate side of the substrate.

19 . The organic light emitting diode display of claim 14 , wherein:
the pixel defining layer covers an external portion of the first electrode, and a surface of the external portion of the first electrode extends in parallel with a plate side of the substrate.

20 . The organic light emitting diode display of claim 14 , wherein the substrate is flexible.

Assignees

• Samsung Display Co Ltd

Inventors

• Yun Hae Young
• Kim Jun Young
• Cho Jung-Hyun

Classifications

• H10K59/80521

  characterised by their shape · CPC title

• H10K59/80515

  characterised by their shape · CPC title

• H10K50/813

  characterised by their shape · CPC title

• H10K59/35 Primary

  comprising red-green-blue [RGB] subpixels · CPC title

• H01L27/3246

  Electricity · mapped topic