Organic light-emitting display device

Patent metadata

Field	Value
Publication number	US-9083002-B2
Application number	US-201113283775-A
Country	US
Kind code	B2
Filing date	Oct 28, 2011
Priority date	Nov 3, 2010
Publication date	Jul 14, 2015
Grant date	Jul 14, 2015

Abstract

An organic light-emitting display device, having a first substrate, a second substrate facing the first substrate, a plurality of pixels disposed between the first and second substrates comprising a first electrode, a second electrode, and an organic light-emitting layer disposed between the first and second electrodes, for suppressing external light reflection and reducing pixel blurring by disposing a scattering structure in a direction a light is extracted at a distance equal to or below an adjacent pixel pitch.

First claim

What is claimed is:

1. An organic light-emitting display device comprising:
a first substrate;
a second substrate facing the first substrate;
a plurality of pixels disposed between the first and second substrates, and comprising a first electrode, a second electrode, and an organic light-emitting layer disposed between the first and second electrodes;
a scattering structure disposed in a direction a light emitted from the organic light-emitting layer is extracted from the plurality of pixels, being not in direct contact with the pixels and at a distance from the organic light-emitting layer of the plurality of pixels equal to or below a pixel pitch between adjacent pixels, and
a light absorbing layer disposed in the direction the light is extracted,
wherein the scattering structure is a resin layer comprising a plurality of scattering particles, and
the light absorbing layer is disposed on the same layer as the scattering structure, and comprises a plurality of the same type of scattering particles as the scattering structure.

2. The organic light-emitting display device of claim 1 , wherein the scattering structure is disposed in a light-emitting region corresponding to the plurality of pixels.

3. The organic light-emitting display device of claim 1 , further comprising a black matrix disposed in a non light-emitting region excluding the light-emitting region corresponding to the plurality of pixels.

4. The organic light-emitting display device of claim 3 , wherein the black matrix is disposed in the non light-emitting region and the light-emitting region alternately with the scattering structure.

5. The organic light-emitting display device of claim 1 , wherein an optical resonance distance between the plurality of pixels is differently designed, and the organic light-emitting display device further comprises a color filter disposed in a light-emitting region corresponding to the plurality of pixels.

6. The organic light-emitting display device of claim 5 , wherein the plurality of pixels penetrate a certain color emitted from the organic light-emitting layer according to the designed optical resonance distance, and comprise a color filter comprising the certain color.

7. The organic light-emitting display device of claim 6 , wherein the color filter is disposed closer than the distance the scattering structure is disposed from the organic light-emitting layer.

8. The organic light-emitting display device of claim 6 , wherein the color filter is disposed on the same layer as the scattering structure, and comprises a plurality of the same type of scattering particles as the scattering structure.

9. The organic light-emitting display device of claim 6 , further comprising a black matrix disposed in a non light-emitting region excluding a light-emitting region corresponding to the plurality of pixels.

10. The organic light-emitting display device of claim 9 , wherein the black matrix is disposed in the non light-emitting region and the light-emitting region alternately with the scattering structure.

Assignees

• Kim Gun-Shik
• Oh Jun-Sik
• Ma Jang-Seok
• Samsung Display Co Ltd

Inventors

• Kim Gun-Shik
• Oh Jun-Sik
• Ma Jang-Seok

Classifications

• H10K59/876

  comprising a resonant cavity structure, e.g. Bragg reflector pair · CPC title

• H10K59/879

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

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/35

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

• H10K59/877 Primary

  comprising scattering means · CPC title