DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME

• US 20070090350A1
• Filed: 10/23/2006
• Published: 04/26/2007
• Est. Priority Date: 10/24/2005
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Hoon, SUNG, Un-Cheol, LEE, Sang-Pil
• Application Number:
  US11/551,849
• Publication Number:
  US 20070090350A1
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: H10K 50/858 comprising refractive means, e.g. lenses
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/879 comprising refractive means, e.g. lenses

Abstract

The present invention discloses a display device having a substrate, an organic material layer arranged on the substrate, a pixel electrode arranged on one surface of the organic material layer, a common electrode arranged on another surface of the organic material layer, and a light penetration layer through which light emitted from the organic material layer passes. The light penetration layer includes a curved pattern formed on at least one surface to refract light in a perpendicular direction to the substrate as it passes through the light penetration layer.

Claims

1. A display device, comprising:

a substrate;

an organic material layer arranged on the substrate;

a pixel electrode arranged on a first surface of the organic material layer;

a common electrode arranged on a second surface of the organic material layer; and

a light penetration layer through which light emitted from the organic material layer passes, the light penetration layer comprising a curved pattern arranged on at least one surface thereof.

2. The display device of claim 1, wherein the light penetration layer is arranged between the substrate and the organic material layer.

3. The display device of claim 2, wherein the curved pattern is arranged on a surface of the light penetration layer facing toward the substrate.

4. The display device of claim 3, further comprising a silicon nitride layer in contact with the curved pattern.

5. The display device of claim 4, wherein the light penetration layer has a refractive index of about 1.6 to about 2.0.

6. The display device of claim 2, wherein the curved pattern is arranged on a surface of the light penetration layer facing toward the organic material layer.

7. The display device of claim 1, wherein the light emitted from the organic material layer passes through the common electrode and then enters the light penetration layer.

8. The display device of claim 7, wherein the curved pattern is arranged on a light-exiting surface of the light penetration layer.

9. The display device of claim 1, further comprising an organic material member in contact with the curved pattern.

10. The display device of claim 9, wherein the organic material member comprises a surface on which a curved pattern is arranged, and the curved pattern of the organic material member is engaged with the curved pattern of the light penetration layer.

11. The display device of claim 10, wherein the light penetration layer is arranged to correspond to the organic material member.

12. The display device of claim 1, wherein the light penetration layer is a color filter.

13. The display device of claim 12, wherein the organic material layer emits white light.

14. The display device of claim 1, wherein the light penetration layer is a silicon nitride layer.

15. The display device of claim 1, wherein the curved pattern has a sinusoidal shape.

16. The display device of claim 15, wherein a distance between peaks or troughs of the sinusoidal shape is about 1 μ

m to about 10 μ

m.

17. The display device of claim 15, wherein an amplitude of the sinusoidal shape is about 1 μ

m to about 6 μ

m.

18. The display device of claim 1, wherein the curved pattern has a shape in which a plurality of hemispheres are dotted.

19. A method for manufacturing a display device, comprising:

forming a light penetration layer on a substrate;

forming a pixel electrode on the light penetration layer;

forming an organic material layer on the pixel electrode; and

forming a common electrode on the organic material layer,

wherein the light penetration layer comprises a first curved pattern formed on at least one surface thereof.

20. The method of claim 19, wherein the light penetration layer comprises a photosensitive material and the first curved pattern is formed using a slit mask.

21. The method of claim 19, further comprising:

forming an organic material member on the substrate,

wherein the organic material member comprises a second curved pattern formed thereon;

wherein the light penetration layer is formed on the organic material member; and

wherein the second curved pattern of the organic material member is engaged with the first curved pattern.