Organic light emitting display apparatus

Patent metadata

Field	Value
Publication number	US-9620737-B2
Application number	US-201615015199-A
Country	US
Kind code	B2
Filing date	Feb 4, 2016
Priority date	Mar 24, 2015
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

An organic light emitting display apparatus includes a substrate including a pixel region, a first electrode on the substrate, a second electrode on the first electrode, an organic light emission layer between the first and second electrodes to emit light, a plurality of layers on the second electrode, and a light compensation pattern on the second electrode and overlapping the pixel region, the light compensation pattern including a plurality of protrusion patterns having progressively decreasing widths as a distance from a center of the pixel region increases, and a plurality of grooves separating the protrusions in a direction parallel to the substrate from the center of the pixel region.

First claim

What is claimed is:

1. An organic light emitting display apparatus, comprising:
a substrate including a pixel region;
a first electrode on the substrate;
a second electrode on the first electrode;
an organic light emission layer between the first and second electrodes to emit light;
a plurality of layers on the second electrode; and
a light compensation pattern on the second electrode and overlapping the pixel region, the light compensation pattern including:
a plurality of protrusion patterns having progressively decreasing widths as a distance from a center of the pixel region increases, and
a plurality of grooves separating the protrusions from one another in a direction parallel to the substrate from the center of the pixel region.

2. The organic light emitting display apparatus as claimed in claim 1 , wherein the light compensation pattern is on an upper surface of the second electrode, the light compensation pattern being integral with the second electrode.

3. The organic light emitting display apparatus as claimed in claim 1 , wherein the plurality of layers include:
an encapsulation layer on the second electrode and covering the first electrode, the organic light emission layer, and the second electrode;
a polarizing plate on the encapsulation layer to circularly polarize incident light; and
an adhesive layer between and adhering to the encapsulation layer and the polarizing plate.

4. The organic light emitting display apparatus as claimed in claim 3 , wherein the light compensation pattern is on one surface of the encapsulation layer, the light compensation pattern being integral with the encapsulation layer.

5. The organic light emitting display apparatus as claimed in claim 3 , wherein the light compensation pattern is on one surface of the adhesive layer, the light compensation pattern being integral with the adhesive layer.

6. The organic light emitting display apparatus as claimed in claim 3 , wherein the plurality of layers further comprise:
a window on the polarizing plate to define an outer surface; and
a dispersion layer between the polarizing plate and the window to dispersing the incident light.

7. The organic light emitting display apparatus as claimed in claim 1 , wherein the light compensation pattern is on one surface of the dispersion layer, the light compensation pattern being integral with the dispersion layer.

8. The organic light emitting display apparatus as claimed in claim 1 , wherein each of the protrusion patterns has a circular shape or a circular ring shape in a plan view.

9. The organic light emitting display apparatus as claimed in claim 1 , wherein each of the protrusion patterns has a polygonal shape or a polygonal ring shape in a plan view.

10. The organic light emitting display apparatus as claimed in claim 1 , wherein the widths of the grooves are the same as one another.

11. An organic light emitting display apparatus, comprising:
a substrate including a pixel region;
a first electrode on the substrate;
a second electrode on the first electrode;
an organic light emission layer between the first and second electrodes to emit light;
a plurality of layers on the second electrode; and
a light compensation pattern on the second electrode and overlapping the pixel region, the light compensation pattern including one groove having a plurality of layers connected to one another, widths among the plurality of layers, which extend in a direction passing through a center of the pixel region and are parallel to the substrate, become progressively smaller as a distance from the center of the pixel region increases.

12. The organic light emitting display apparatus as claimed in claim 11 , wherein the plurality of layers include:
a first layer adjacent to the center of the pixel region; and
a second layer spaced farther apart from the center of the pixel region than the first layer, the second layer surrounding at least a portion of the first layer.

13. The organic light emitting display apparatus as claimed in claim 11 , wherein the widths of the layers are the same as one another.

14. The organic light emitting display apparatus as claimed in claim 11 , wherein the groove has a spiral shape in a plan view.

15. The organic light emitting display apparatus as claimed in claim 11 , wherein the light compensation pattern is on the second electrode.

16. The organic light emitting display apparatus as claimed in claim 15 , wherein the groove penetrates the second electrode.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Hyesog
• Cho Chi-O

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/871

  Self-supporting sealing arrangements · CPC title

• H10K50/844

  Encapsulations · CPC title