Organic light emitting display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9570713-B2
Application number	US-201615155876-A
Country	US
Kind code	B2
Filing date	May 16, 2016
Priority date	Nov 11, 2013
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

Disclosed is an organic light emitting display (OLED) device that may include first and second pixels on a substrate, each including a TFT region and a display region, the display region of each of the first and second pixels including a first electrode, an emission layer and a second electrode; a color filter layer in the display region of the second pixel; and a reflection preventing layer in the first and second pixels, substantially excluding the display region of the second pixel.

First claim

What is claimed is:

1. An organic light emitting display (OLED) device comprising:
first, second, third and fourth pixels on a first surface of a substrate, each of the first, second, third and fourth pixels including a display region and a non-display region;
a color filter layer in the first, second and third pixels,
a first reflection preventing layer in the non-display region of each of the first, second and third pixels; and
a second reflection preventing layer in the non-display region of the fourth pixel and the display region of the fourth pixel,
wherein the first and second reflection preventing layers are on a second surface facing the first surface of the substrate.

2. The OLED device according to claim 1 , wherein one of the first, second and third pixels is any one of red, green and blue pixels, and the fourth pixel is a white pixel.

3. The OLED device according to claim 1 , wherein the second reflection preventing layer in the non-display region of the fourth pixel has the substantially same thickness as that of the second reflection preventing layer in the display region of the fourth pixel.

4. The OLED device according to claim 1 , wherein the first and second reflection preventing layers include a first alignment layer on the second surface of the substrate, a quarter wave plate on the first alignment layer, a second alignment layer on the quarter wave plate, and a linear polarization layer on the second alignment layer.

5. The OLED device according to claim 4 , wherein the first and second reflection preventing layers further include a third alignment layer and a half wave plate between the substrate and the first alignment layer.

6. The OLED device according to claim 1 , wherein the display region of each of the first, second and third pixels is provided with at least any one of an alignment layer, a half wave plate, a quarter wave plate.

7. The OLED device according to claim 1 , further comprising a film on the substrate with an adhesive therebetween, and wherein the first and second reflection preventing layers is provided on the film.

8. The OLED device according to claim 1 , wherein a lateral surface of the reflection preventing layer is sealed by a sealing layer.

9. The OLED device according to claim 1 , wherein the display region of each of the first, second, third and fourth pixels includes a first electrode, an emission layer and a second electrode, and the emission layer emits a white light.

10. The OLED device according to claim 1 , wherein the first and second reflection preventing layers include a phase retarder.

11. An organic light emitting display (OLED) device comprising:
first, second, third and fourth pixels on a substrate, each of the first, second, third and fourth pixels including a display region and a non-display region;
a color filter layer in the first, second and third pixels,
a first reflection preventing layer in the non-display region of each of the first, second and third pixels; and
a second reflection preventing layer in the non-display region of the fourth pixel and the display region of the fourth pixel,
wherein the second reflection preventing layer in the non-display region of the fourth pixel has the substantially same thickness as that of the second reflection preventing layer in the display region of the fourth pixel.

12. The OLED device according to claim 11 , wherein the first and second reflection preventing layers include a first alignment layer on a first surface of the substrate, a quarter wave plate on the first alignment layer, a second alignment layer on the quarter wave plate, and a linear polarization layer on the second alignment layer.

13. The OLED device according to claim 12 , wherein the first and second reflection preventing layers further include a third alignment layer and a half wave plate between the substrate and the first alignment layer.

14. The OLED device according to claim 11 , wherein the display region of each of the first, second and third pixels is provided with at least any one of an alignment layer, a half wave plate, a quarter wave plate.

15. The OLED device according to claim 11 , further comprising a film on the substrate with an adhesive therebetween, and wherein the first and second reflection preventing layers is provided on the film.

16. The OLED device according to claim 11 , wherein a lateral surface of the reflection preventing layer is sealed by a sealing layer.

17. The OLED device according to claim 11 , wherein the first and second reflection preventing layers include a phase retarder.

18. An organic light emitting display (OLED) device comprising:
first, second, third and fourth pixels on a substrate, each of the first, second, third and fourth pixels including a display region and a non-display region;
a color filter layer in the first, second and third pixels,
a first reflection preventing layer in the non-display region of each of the first, second and third pixels; and
a second reflection preventing layer in the non-display region of the fourth pixel and the display region of the fourth pixel,
wherein the first and the second reflection preventing layers include at least one layer that changes a polarization direction of an incident light.

19. The OLED device according to claim 18 , wherein the at least one layer includes a first layer and a second layer, and
wherein the first layer is configured to linearly polarize the light, and the second layer is configured to circularly polarize the linearly polarized light and linearly polarizes the circularly polarized light.

20. The OLED device according to claim 19 , wherein a linear polarization of the linearly polarized light from the circularly polarized light is substantially orthogonal to a transmission axis of the first layer.

Assignees

• Lg Display Co Ltd

Inventors

• Park Wonki
• Park Hyejeong

Classifications

• H10K59/8793

  Arrangements for polarized light emission (H10K59/8791 takes precedence) · CPC title

• H10K59/8791 Primary

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K50/86

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/351 Primary

  comprising more than three subpixels, e.g. red-green-blue-white [RGBW] · CPC title