Color conversion panel, method of measuring volume of ink layer thereof, and display device including the color conversion panel

Patent metadata

Field	Value
Publication number	US-12268074-B2
Application number	US-202117405094-A
Country	US
Kind code	B2
Filing date	Aug 18, 2021
Priority date	Nov 20, 2020
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

A color conversion panel includes an active area corresponding to a display area and including an active pixel portion at which light is emitted, a dummy area adjacent to the active area and including a first dummy pixel portion and a second dummy pixel portion, and a color conversion layer including a bank layer in both the active area and the dummy area. The bank layer defines each of an active opening corresponding to the active pixel portion and defining an active opening planar area, a first dummy opening corresponding to the first dummy pixel portion and defining a first planar area, and a second dummy opening corresponding to the second dummy pixel portion and defining a second planar area. The first planar area of the first dummy opening is different from the second planar area of the second dummy opening.

First claim

What is claimed is:

1. A color conversion panel, comprising:
an active area corresponding to a display area of a display device and including an active pixel portion at which light is emitted;
a dummy area adjacent to the active area and including a first dummy pixel portion and a second dummy pixel portion; and
a color conversion layer including:
a bank layer in both the active area and the dummy area, the bank layer defining each of:
an active opening corresponding to the active pixel portion and defining an active opening planar area,
a first dummy opening corresponding to the first dummy pixel portion and defining a first planar area, and
a second dummy opening corresponding to the second dummy pixel portion and defining a second planar area different from the first planar area of the first dummy opening, and

an ink layer comprising an active ink layer, a first dummy ink layer and a second dummy ink layer respectively in the active opening, the first dummy opening and the second dummy opening, each of the active ink layer, the first dummy ink layer and the second dummy ink layer defines an upper surface having a shape in cross-section,
wherein
a volume of the first dummy ink layer and a volume of the second dummy ink layer are the same as each other together with the shape of the upper surface of the first dummy ink layer being different from the shape of the upper surface of the second dummy ink layer.

2. The color conversion panel of claim 1 , wherein the first planar area of the first dummy opening in the dummy area is equal to the active opening planar area of the active opening in the active area.

3. The color conversion panel of claim 2 , wherein within the dummy area, the second planar area of the second dummy opening is less than the first planar area of the first dummy opening.

4. The color conversion panel of claim 2 , wherein within the dummy area, the second planar area of the second dummy opening is greater than the first planar area of the first dummy opening.

5. The color conversion panel of claim 1 , wherein each of the first planar area of the first dummy opening and the second planar area of the second dummy opening is in a range from about 70% to about 130% of the active opening planar area of the active opening.

6. The color conversion panel of claim 1 , wherein
a volume of the active ink layer is equal to the volume of the first dummy ink layer and the volume of the second dummy ink layer, and
the shape of the upper surface of the active ink layer is the same as the shape of the upper surface of the first dummy ink layer.

7. The color conversion panel of claim 6 , wherein
the active pixel portion emits the light having a color,
each of the active ink layer, the first dummy ink layer and the second dummy ink layer of the ink layer has a material corresponding to the light which has the color, and
the material of the active ink layer, the material of the first dummy ink layer and the material of the second dummy ink layer are the same as each other.

8. The color conversion panel of claim 1 , wherein
the dummy area is adjacent to the active area along a first direction, and
the active pixel portion, the first dummy pixel portion and the second dummy pixel portion are in order along the first direction.

9. The color conversion panel of claim 1 , wherein
the dummy area is adjacent to the active area along a first direction,
each of the active opening, the first dummy opening and the second dummy opening has a width along the first direction and a width along a second direction which crosses the first direction,
the width of the first dummy opening along the first direction is equal to the width of the second dummy opening along the first direction, and
the width of the first dummy opening along the second direction is different from the width of the second dummy opening along the second direction.

10. The color conversion panel of claim 1 , wherein
the dummy area is adjacent to the active area along a first direction,
the dummy area further includes a third dummy pixel portion, the first dummy pixel portion and the second dummy pixel portion in order along the first direction,
the bank layer further defines a third dummy opening corresponding to the third dummy pixel portion and defining a third planar area which is different from the first planar area of the first dummy opening and the second planar area of the second dummy opening,
the ink layer further comprises a third dummy ink layer which is in the third dummy opening and defines an upper surface having a shape in cross-section,
a volume of the third dummy ink layer and the volume of the first dummy ink layer are the same as each other, and
the shape of the upper surface of the third dummy ink layer is different from each of the shape of the upper surface of the first dummy ink layer and the shape of the upper surface of the second dummy ink layer.

11. The color conversion panel of claim 10 , wherein the first planar area of the first dummy opening in the dummy area is equal to the active opening planar area of the active opening in the active area.

12. The color conversion panel of claim 11 , wherein within the dummy area:
the second planar area of the second dummy opening is less than the first planar area of the first dummy opening, and
the third planar opening of the third dummy opening is greater than the first planar area of the first dummy opening.

13. The color conversion panel of claim 10 , wherein each of the first planar area of the first dummy opening, the second planar area of the second dummy opening and the third planar area of the third dummy opening is in a range from about 70% to about 130% of the active opening planar area of the active opening.

14. The color conversion panel of claim 10 , wherein
the dummy area is adjacent to the active area along a first direction,
the dummy area further includes the third dummy pixel portion, the first dummy pixel portion, the second dummy pixel portion and a fourth dummy pixel portion in order along the first direction,
the bank layer further defines a fourth dummy opening corresponding to the fourth dummy pixel portion and defining a fourth planar area which is different from the first planar area of the first dummy opening, the second planar area of the second dummy opening and the third planar opening of the third dummy opening,
the ink layer further comprises a fourth dummy ink layer which is in the fourth dummy opening and defines an upper surface having a shape in cross-section,
a volume of the fourth dummy ink layer and the volume of the first dummy ink layer are the same as each other, and
the shape of the upper surface of the fourth dummy ink layer is different from each of the shape of the upper surface of the first dummy ink layer, the shape of the upper surface of the second dummy ink layer and the shape of the upper surface of the third dummy ink layer.

15. A display device, comprising:
a display panel which provides light at a display area of the display device; and
a color conversion panel which faces the display panel and includes:
an active area corresponding to the display area and including an active pixel portion at which light is emitted,
a dummy area adjacent to the active area and including a first dummy pixel portion and a second dummy pixel portion, and
a color conversion layer including:
a bank layer in both the active area and the dummy area, the bank layer defining each of:
an active opening corresponding to the active pixel portion and defining an active opening planar area,
a first dummy opening

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Seon Uk
• Shin Ho-Yong
• Eoh Gyeongeun
• Lee Dongjun

Classifications

• G02B5/206

  comprising particles embedded in a solid matrix · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title

• H10K59/38 Primary

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

• H10K59/88 Primary

  Dummy elements, i.e. elements having non-functional features · CPC title

• H10K59/122 Primary

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