Organic light emitting diode display device with reduced reflectance

Patent metadata

Field	Value
Publication number	US-10141379-B2
Application number	US-201615368275-A
Country	US
Kind code	B2
Filing date	Dec 2, 2016
Priority date	Dec 4, 2015
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

An organic light emitting diode display device can include a display panel including a plurality of pixels, at least one pixel among the plurality of pixels including first to fourth sub-pixels defined at intersection regions between gate lines and data lines; and first to third color filter layers corresponding to the first sub-pixel, the third sub-pixel and the fourth sub-pixel, respectively; the second sub-pixel includes: an emission area, and first and second color filter patterns disposed in the second sub-pixel configured to absorb light incident from an outside of the organic light emitting diode display device, the first color filter pattern and a second color filter pattern are different colors; and the first color filter pattern or the second color filter pattern has a first gap between an edge of the first or second color filter pattern and an edge of the emission area.

First claim

What is claimed is:

1. An organic light emitting diode display device comprising:
a display panel including a plurality of pixels, at least one pixel among the plurality of pixels including a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel defined at intersection regions between a plurality of gate lines and a plurality of data lines; and
a first color filter layer, a second color filter layer and a third color filter layer corresponding to the first sub-pixel, the third sub-pixel and the fourth sub-pixel, respectively,
wherein the second sub-pixel includes:
an emission area,
a first color filter pattern disposed in the second sub-pixel for absorbing light incident from an outside of the organic light emitting diode display device, extending beyond opposite outer edges of the emission area, and disposed in parallel with the gate line, the first color filter pattern and the second sub-pixel corresponding to different colors, and
a second color filter pattern disposed in the second sub-pixel for absorbing light incident from an outside of the organic light emitting diode display device, having an outer perimeter fully within the emission area, separated from the first color filter pattern, and disposed in parallel with the gate line, and
wherein the first color filter pattern has a different color than the second color filter pattern.

2. The organic light emitting diode display device according to claim 1 , wherein the second sub-pixel is a white sub-pixel and the first color filter pattern is a blue color filter pattern or a green color filter pattern.

3. The organic light emitting diode display device according to claim 1 ,
further comprising:
a reference voltage line disposed in parallel with the data line, and
wherein the first color pattern is extended to a first gap between the outer edge of the emission area and the reference voltage line to secure an overlay margin.

4. The organic light emitting diode display device according to claim 1 ,
wherein the second color filter pattern has a second gap between an edge of the second color filter pattern and a data line or a reference voltage line.

5. The organic light emitting diode display device according to claim 4 wherein the second color filter pattern has a third gap between the first color filter pattern and the second color filter pattern, and
wherein the second color filter pattern has a fourth gap between an edge of the second color filter pattern and an edge of the emission area.

6. The organic light emitting diode display device according to claim 4 , further comprising:
a third color filter pattern disposed in the second sub-pixel for absorbing light incident from an outside of the organic light emitting diode display device,
wherein the third color filter pattern has a fourth gap between the second color filter pattern and the third color filter pattern, and
wherein the third color filter pattern has a fifth gap between an edge of the emission area and the third color filter pattern.

7. The organic light emitting diode display device according to claim 6 , wherein the third color filter pattern extends from the emission area to the data line or the reference voltage line.

8. The organic light emitting diode display device according to claim 6 , wherein the first color filter pattern and the third color filter pattern are a same color.

9. The organic light emitting diode display device according to claim 8 , wherein the first color filter pattern and the third color filter pattern are blue color filter patterns.

10. The organic light emitting diode display device according to claim 1 , wherein the second color filter pattern is a blue color filter pattern or a green color filter pattern.

11. The organic light emitting diode display device according to claim 1 , wherein the first color filter pattern or the second color filter pattern covers 10%-30% of the second sub-pixel.

12. The organic light emitting diode display device according to claim 1 , wherein an area of the first color filter pattern is greater than an area of the second color filter pattern.

13. The organic light emitting diode display device according to claim 1 , wherein an organic light emitting layer is disposed between a first electrode and a second electrode in the second sub-pixel, and the first electrode is connected to a thin film transistor, and
wherein the emission area is defined by a bank pattern, the bank pattern corresponding to a non-emission area.

14. The organic light emitting diode display device according to claim 13 , further comprising:
an overcoating layer disposed between the first color filter pattern and the first electrode; and
a protective layer, wherein the first color filter pattern is disposed between the protective layer and the overcoating layer.

15. The organic light emitting diode display device according to claim 13 , further comprising:
a black matrix disposed in a region corresponding to and overlapping with the bank pattern,
wherein the organic light emitting layer is disposed between the black matrix and the first electrode and between first color filter pattern and the first electrode.

16. The organic light emitting diode display device according to claim 15 , wherein the first electrode is a reflective electrode.

17. The organic light emitting diode display device according to claim 15 , further comprising:
a second color filter pattern disposed in the second sub-pixel for absorbing light incident from an outside of the organic light emitting diode display device,
wherein the first color filter pattern and the second color filter pattern are separated from each other with a greater distance than the first color filter pattern is separated from the bank pattern or the black matrix.

18. The organic light emitting diode display device according to claim 13 , wherein the organic light emitting layer is disposed between the first color pattern and the second electrode.

19. The organic light emitting diode display device according to claim 18 , wherein the second electrode is a reflective electrode.

20. An organic light emitting diode display device comprising:
a display panel including a plurality of pixels including at least one white sub-pixel disposed between two other sub-pixels,
wherein the white sub-pixel includes:
an organic light emitting layer disposed between a first electrode and a second electrode, the first electrode connected to a thin film transistor,
an emission area defined by a bank pattern, the bank pattern corresponding to a non-emission area,
a first color filter pattern disposed in the white sub-pixel for absorbing light incident from an outside of the organic light emitting diode display device, having first two sides that extend beyond the emission area and second two sides that terminate over the emission area, and disposed in parallel with the gate line, the first color filter pattern having a different color than the white sub-pixel,
a second color filter pattern disposed in the white sub-pixel for absorbing light incident from an outside of the organic light emitting diode display device, having an outer perimeter fully within the emission area, separated from the first color filter pattern, and disposed in parallel with the gate line, and
wherein the first color filter pattern has a different color than the second color filter pattern.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Youngho
• Lee Seungbeum
• Park Incheol
• Jo Eunmi

Classifications

• H01L27/3213 Primary

  Electricity · mapped topic

• H01L51/5284

  Electricity · mapped topic

• H01L27/322

  Electricity · mapped topic

• H01L51/5281

  Electricity · mapped topic

• H10K59/8792

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