Color filter substrate and display device having the same

Patent metadata

Field	Value
Publication number	US-10084025-B2
Application number	US-201615265561-A
Country	US
Kind code	B2
Filing date	Sep 14, 2016
Priority date	Sep 14, 2015
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

Discussed is a color filter substrate and a display device having the same. The color filter substrate prevents color filter layers or color patterns from being lost or broken during a production process. The color filter substrate is formed by forming connection patterns in the edges of red (R), blue (B), and green (G) color filter layers and red (R), blue (B), and green G) color patterns. The connection patterns and color patterns are simultaneously formed with the color filter layers.

First claim

What is claimed is:

1. A color filter substrate in a display panel, the color filter substrate comprising:
a substrate configured to include a display area having an area of a plurality of sub-pixels with emission areas and non-emission areas, and a non-display area along the circumference of the display area;
a color filter layer configured to include a first color filter, a second color filter, and a third color filter, which are disposed in an area corresponding to the sub-pixels and have different colors, wherein the color filter layer is attached to a first color pattern and a second color pattern;
an optical shielding unit disposed between the sub-pixels, and including the first color pattern overlapping the second color pattern at the non-emission areas; and
a first connection pattern unit and a second connection pattern unit, which are included in the non-display area, and are configured to connect both ends of the color filter layer and the optical shielding,
wherein a thickness of a color pattern of the optical shielding unit is less than a thickness of the color filter layer for the respective color.

2. The color filter substrate of claim 1 , further comprising:
an optical shielding extension unit disposed in both ends of the first and second connection pattern units, and being parallel with the optical shielding unit.

3. The color filter substrate of claim 2 , wherein a width of a short side of the optical shielding extension unit is wider than widths of short sides of the first and second connection pattern units.

4. The color filter substrate of claim 2 , wherein the optical shielding unit and the optical shielding extension unit are configured to include the first, the second, and third color filters, which are layered therein.

5. The color filter substrate of claim 4 , wherein the first and second connection pattern units are configured to include a red connection pattern, a blue connection pattern, and a green connection pattern, which are layered therein and are formed to be respectively integrated with the first, second, and third color filters.

6. The color filter substrate of claim 1 , further comprising:
a third connection pattern unit in the display area, which is parallel with the first and second connection pattern units and intersects the optical shielding unit.

7. The color filter substrate of claim 6 , wherein the first and second connection pattern units and the third connection pattern unit are formed as two layers of the color filters.

8. The color filter substrate of claim 1 , wherein the display panel includes a white sub-pixel, and an array substrate having an organic light emitting diode that generates white light.

9. The color filter substrate of claim 1 , wherein the first connection pattern unit and the second connection pattern unit are included in a boundary area of the display area in the non-display area.

10. The color filter substrate of claim 1 , wherein the optical shielding unit comprises the same material as that of at least one of the first to third color filters; or the optical shielding unit is formed of the same material as that of at least one of the first to third color filters; or the optical shielding unit is formed simultaneously with at least one of the first to third color filters.

11. The color filter substrate of claim 1 , wherein a width of each of the first connection pattern unit and the second connection pattern unit is greater than a width of the optical shielding unit.

12. A display device, comprising:
a lower substrate configured to include a display area having an area of a plurality of sub-pixels with emission areas and non-emission areas, and a non-display area along the circumference of the display area;
a driving transistor disposed on the lower substrate;
a pixel electrode disposed on the driving transistor;
a common electrode disposed on the pixel electrode; and
a color filter substrate configured to include:
a color filter layer disposed in an area corresponding to the sub-pixels and attached to a first color pattern and a second color pattern;
an optical shielding unit disposed between the sub-pixels and including the first color pattern overlapping the second color pattern at the non-emission areas; and
a first connection pattern unit and a second connection pattern unit disposed in edges of the color filter layer and the optical shielding,

wherein a thickness of a color pattern of the optical shielding unit is less than a thickness of the color filter layer for the respective color.

13. The display device of claim 12 , further comprising:
an optical shielding extension unit disposed in both ends of the first and second connection pattern units, and being parallel with the optical shielding unit.

14. The display device of claim 13 , wherein a width of a short side of the optical shielding extension unit is wider than widths of short sides of the first and second connection pattern units.

15. The display device of claim 13 , wherein the optical shielding unit and the optical shielding extension unit are configured to include first, second, and third color filters that are layered therein.

16. The display device of claim 15 , wherein the first and second connection pattern units are configured to include a red connection pattern, a blue connection pattern, and a green connection pattern, which are layered therein and are formed to be respectively integrated with the first, second, and third color filters.

17. The display device of claim 12 , further comprising:
a third connection pattern unit in the display area, which is parallel with the first and second connection pattern units, and intersects the optical shielding unit.

18. The display device of claim 17 , wherein the first and second connection pattern units and the third connection pattern unit are formed as two layers among the first, second, and third color filters.

19. The display device of claim 13 , wherein the optical shielding extension unit has a width corresponding to an edge area of the common electrode.

20. The color filter substrate of claim 1 , wherein the first and second color patterns are interposed between the first and second color filters at the non-emission areas.

21. A color filter substrate in a display panel, the color filter substrate comprising:
a substrate configured to include a display area having an area of a plurality of sub-pixels with emission areas and non-emission areas, and a non-display area along the circumference of the display area;
a color filter layer configured to include a first color filter, a second color filter, and a third color filter, which are disposed in an area corresponding to the sub-pixels and have different colors, wherein the color filter layer is attached to a first color pattern and a second color pattern;
an optical shielding unit disposed between the sub-pixels, and including the first color pattern overlapping the second color pattern at the non-emission areas;
a first connection pattern unit and a second connection pattern unit, which are included in the non-display area, and are configured to connect both ends of the color filter layer and the optical shielding unit; and
an optical shielding extension unit disposed in both ends of the first and second connection pattern units, and being parallel with the optical shielding unit,
wherein the optical shielding unit and the optical shielding extension unit are configured to include the first, the second, and third color filters, whic

Assignees

• Lg Display Co Ltd

Inventors

• Choi Howon
• Park Yongmin

Classifications

• H01L51/5284

  Electricity · mapped topic

• H01L27/322 Primary

  Electricity · mapped topic

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/8792

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

• H10K59/1216

  the pixel elements being capacitors · CPC title