Color conversion panel and display device including the same

Patent metadata

Field	Value
Publication number	US-12419179-B2
Application number	US-202318166593-A
Country	US
Kind code	B2
Filing date	Feb 9, 2023
Priority date	May 3, 2022
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

A color conversion panel includes a substrate including a display area including a color conversion layer, a first pixel area, a second pixel area, and a non-pixel area, and a plurality of color filter layers on the substrate. The color filter layers include a first color filter layer in the first pixel area and defining in the non-pixel area, a first alignment pattern, and a first opening spaced from the first alignment pattern, the first pixel area and the second pixel area, and a second color filter layer in the second pixel area, covering the first alignment pattern of the first color filter layer and defining in the non-pixel area a second alignment pattern which overlaps the first opening of the first color filter layer and exposes a portion of the first color filter layer at the first opening, to outside the second color filter layer.

First claim

What is claimed is:

1. A color conversion panel comprising:
a substrate including:
a display area including a color conversion layer, and
within the display area, a first pixel area, a second pixel area, and a non-pixel area which is between the first pixel area and the second pixel area; and

a plurality of color filter layers on the substrate, including:
a first color filter layer in the first pixel area,
the first color filter layer defining in the non-pixel area:
a first alignment pattern, and
a first opening spaced apart from the first alignment pattern, the first pixel area and the second pixel area;

a second color filter layer on the first color filter layer, in the second pixel area and covering the first alignment pattern of the first color filter layer; and
the second color filter layer defining in the non-pixel area, a second alignment pattern which overlaps the first opening of the first color filter layer and exposes a portion of the first color filter layer at the first opening, to outside the second color filter layer.

2. The color conversion panel of claim 1 , wherein within the non-pixel area:
the second alignment pattern includes a solid portion of the second color filter layer within the first opening of the first color filter layer, and
the solid portion of the second color filter layer in the first opening of the first color filter layer is coplanar with the first color filter layer.

3. The color conversion panel of claim 1 , wherein the plurality of color filter layers on the substrate further includes a third color filter layer, on the second color filter layer.

4. The color conversion panel of claim 3 , wherein
the display area further includes a third pixel area, the non-pixel area extending between the first pixel area, the second pixel area and the third pixel area, and
the first color filter layer further defines within the non-pixel area, a second opening spaced apart from the first alignment pattern and the first to third pixel areas,
the second color filter layer further defines within the non-pixel area, a third opening which overlaps the second opening of the first color filter layer and exposes a portion of the first color filter layer at the second opening, to outside the second color filter layer,
the third color filter layer is in the third pixel area and covers the second alignment pattern of the second color filter layer, and
the third color filter defines in the non-pixel area a third alignment pattern which overlaps the second opening of the first color filter layer, overlaps the third opening of the second color filter layer, and exposes a portion of the first color filter layer at the second opening, to outside the third color filter layer.

5. The color conversion panel of claim 4 , wherein
the third alignment pattern includes a solid portion of the third color filter layer within the second opening of the first color filter layer and
the solid portion of the third color filter layer in the second opening of the first color filter layer is coplanar with the first color filter layer.

6. The color conversion panel of claim 4 , further comprising:
a partition layer on the third color filter layer and covering the third alignment pattern of the third color filter layer.

7. The color conversion panel of claim 6 , further comprising:
a spacer layer on the partition layer, and
a spacer of the spacer layer in the non-pixel area.

8. The color conversion panel of claim 7 , wherein the spacer includes a quadrangular shape or a frame shape solid portion of the spacer layer which defines a quadrangular shape opening.

9. The color conversion panel of claim 4 , wherein
a total planar area of the first alignment pattern includes a first axis including a center of the total planar area of the first alignment pattern,
the first alignment pattern is symmetrical with respect to the first axis,
a total planar area of the second alignment pattern includes a second axis including a center of the total planar area of the second alignment pattern,
each of the first opening of the first color filter layer and the second alignment pattern of the second color filter layer, is symmetrical with respect to the second axis,
a total planar area of the third alignment pattern includes a third axis including a center of the total planar area of the third alignment pattern, and
each of the second opening of the first color filter layer, the third opening of the second color filter layer, and the third alignment pattern of the third color filter layer, is symmetrical with respect to the third axis.

10. A color conversion panel comprising:
a substrate including:
a display area including a color conversion layer, and
within the display area, a first pixel area, a second pixel area, and a non-pixel area which is between the first pixel area and the second pixel area; and

a plurality of color filter layers on the substrate, including:
a first color filter layer in the first pixel area;
the first color filter layer defining in the non-pixel area, a first partition layer measurement opening spaced apart from the first pixel area and the second pixel area;
a second color filter layer in the second pixel area; and
the second color filter layer defining in the non-pixel area, a second partition layer measurement opening corresponding to the first partition layer measurement opening;

a low refractive index layer on the second color filter layer and through which the plurality of color filter layers are visible, the low refractive index layer having a refractive index lower than a refractive index of the color conversion layer; and
a partition layer on the low refractive index layer, the partition layer defining in the non-pixel area, a partition layer measurement alignment pattern,
wherein the partition layer measurement alignment pattern of the partition layer overlaps the first partition layer measurement opening in the first color filter layer and the second partition layer measurement opening in the second color filter layer, and visually exposes at least one of the first color filter layer and the second color filter layer to outside the partition layer.

11. The color conversion panel of claim 10 , wherein at the partition layer measurement alignment pattern of the partition layer, the low refractive index layer includes:
a first portion which is outside the first partition layer measurement opening in the first color filter layer and the second partition layer measurement opening in the second color filter layer, and
a second portion which is within the first partition layer measurement opening in the first color filter layer and in the second partition layer measurement opening in the second color filter layer, and
with respect to the substrate, a height of the first portion is less than a height of the second portion.

12. The color conversion panel of claim 10 , further comprising:
a third color filter layer between the second color filter layer and the low refractive index layer.

13. The color conversion panel of claim 12 , wherein
the display area further includes third pixel area, the non-pixel area extending between the first pixel area, the second pixel area and the third pixel area,
the third color filter layer is in the third pixel area,
the third color filter layer defines in the non-pixel area, a third partition layer measurement opening corresponding to the first and second partition layer measurement openings and to the partition layer measurement alignment pattern of the partition layer, and
the partition layer measurement alignment pattern of the partition layer visu

Assignees

• Samsung Display Co Ltd

Inventors

• Seo Seunghui
• Lim Tae Woo
• Choi Moon-Keun
• Kim Wal Jun
• Park Hyunbae
• Song Hyelynn

Classifications

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• G02B5/201

  in the form of arrays · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/38 Primary

  comprising colour filters or colour changing media [CCM] · CPC title

• H10H20/8515

  not being in contact with the bodies · CPC title