Color conversion panel and display device including the same, and manufacturing method thereof

1 . A color conversion panel comprising:

a substrate;

a plurality of color filters on the substrate;

a partition wall on the substrate, and including a first opening, a second opening, a third opening, and a sub-opening;

a first color conversion layer located in the first opening of the partition wall; a second color conversion layer located in the second opening of the partition wall;

a transmission layer located in the third opening of the partition wall;

an additional layer located in the sub-opening of the partition wall; and

a spacer on the additional layer, wherein, in a plan view, the spacer overlaps with the sub-opening and is spaced apart from the first opening, the second opening, and the third opening, and

wherein, in the plan view, an area of the sub-opening is smaller than each of areas of the first opening, the second opening, and the third opening.

2 . The color conversion panel of claim 1 , wherein:

the sub-opening is connected to the third opening; and

the additional layer is at a same layer as that of the transmission layer.

3 . The color conversion panel of claim 2 , wherein the partition wall further includes a fourth opening spaced from the first opening, the second opening, and the third opening.

4 . The color conversion panel of claim 3 , wherein:

the transmission layer is configured to transmit light of a first wavelength;

the first color conversion layer is configured to convert the light of the first wavelength to light of a second wavelength;

the second color conversion layer is configured to convert the light of the first wavelength to light of a third wavelength,

the color filters comprise a first color filter, a second color filter, and a third color filter;

the first color filter, the second color filter, and the third color filter overlap with each other at a light blocking region;

the partition wall overlaps with the light blocking region;

the first opening overlaps with the third color filter;

the second opening overlaps with the second color filter; and

the third opening overlaps with the first color filter.

5 . The color conversion panel of claim 1 , wherein:

the sub-opening is connected to the first opening or the second opening; and

the additional layer is at a same layer as that of the first color conversion layer or the second color conversion layer.

6 . The color conversion panel of claim 5 , wherein the partition wall further includes a fourth opening spaced from the first opening, the second opening, and the third opening.

7 . The color conversion panel of claim 6 , wherein:

the transmission layer is configured to transmit light of a first wavelength;

the first color conversion layer is configured to convert the light of the first wavelength to light of a second wavelength;

the second color conversion layer is configured to convert the light of the first wavelength to light of a third wavelength;

the color filters comprise a first color filter, a second color filter, and a third color filter;

the first color filter, the second color filter, and the third color filter overlap with each other at a light blocking region;

the partition wall overlaps with the light blocking region;

the first opening overlaps with the third color filter;

the second opening overlaps with the second color filter; and

the third opening overlaps with the first color filter.

8 . A display device comprising:

a display panel comprising:

a first substrate;

a thin film transistor on the first substrate;

a pixel definition layer on the thin film transistor; and

a plurality of emission layers at regions defined by the pixel definition layer;

a second substrate facing the first substrate; a plurality of color filters between the first substrate and the second substrate;

a partition wall between the second substrate and the color filters, and including a first opening, a second opening, a third opening, and a sub-opening;

a first color conversion layer located in the first opening of the partition wall; a second color conversion layer located in the second opening of the partition wall;

a transmission layer located in the third opening of the partition wall;

an additional layer located in the sub-opening of the partition wall; and

a spacer overlapping with the additional layer,

wherein, in a plan view, the spacer overlaps with the sub-opening and is spaced apart from the first opening, the second opening, and the third opening, and

wherein, in the plan view, an area of the sub-opening is smaller than each of areas of the first opening, the second opening, and the third opening.

9 . The display device of claim 8 , wherein:

the sub-opening is connected to the third opening; and

the additional layer is at a same layer as that of the transmission layer.

10 . The display device of claim 9 , wherein the partition wall further includes a fourth opening spaced from the first opening, the second opening, and the third opening.

11 . The display device of claim 10 , wherein:

the transmission layer is configured to transmit light of a first wavelength;

the first color conversion layer is configured to convert the light of the first wavelength to light of a second wavelength;

the second color conversion layer is configured to convert the light of the first wavelength to light of a third wavelength;

the color filters comprise a first color filter, a second color filter, and a third color filter;

the first color filter, the second color filter, and the third color filter overlap with each other at a light blocking region;

the partition wall overlaps with the light blocking region;

the first opening overlaps with the third color filter;

the second opening overlaps with the second color filter; and

the third opening overlaps with the first color filter.

12 . The display device of claim 8 , wherein:

the sub-opening is connected to the first opening or the second opening; and

the additional layer is at a same layer as that of the first color conversion layer or the second color conversion layer.

13 . The display device of claim 12 , wherein the partition wall further includes a fourth opening spaced from the first opening, the second opening, and the third opening.

14 . The display device of claim 13 , wherein:

the transmission layer is configured to transmit light of a first wavelength;

the first color conversion layer is configured to convert the light of the first wavelength to light of a second wavelength;

the second color conversion layer is configured to convert the light of the first wavelength to light of a third wavelength;

the color filters comprise a first color filter, a second color filter, and a third color filter;

the first color filter, the second color filter, and the third color filter overlap with each other at a light blocking region;

the partition wall overlaps with the light blocking region;

the first opening overlaps with the third color filter;

the second opening overlaps with the second color filter; and

the third opening overlaps with the first color filter.

15 . A manufacturing method of a color conversion panel, comprising:

forming a plurality of color filters on a substrate;

forming a partition wall including a first opening, a second opening, a third opening, and a sub-opening on the color filters;

forming a first color conversion layer in the first opening of the partition wall;

forming a second color conversion layer in the second opening of the partition wall;

forming a transmission layer in the third opening of the partition wall;

forming an additional layer in the sub-opening of the partition wall; and

forming a spacer on the additional layer,

wherein, in a plan view, the spacer overlaps with the sub-opening and is spaced apart from the first opening, the second opening, and the third opening, and

wherein, in the plan view, an area of the sub-opening is smaller than each of areas of the first opening, the second opening, and the third opening.

16 . The manufacturing method of claim 15 , wherein the forming of the first color conversion layer, the forming of the second color conversion layer, and the forming of the transmission layer are performed utilizing an inkjet process.

17 . The manufacturing method of claim 16 , further comprising forming a fourth opening spaced from the first opening, the second opening, and the third opening in the forming of the partition wall,

wherein an ink dripped on the partition wall is disposed in the fourth opening in the inkjet process.

18 . The manufacturing method of claim 15 , wherein the sub-opening is formed to be connected to at least one of the first opening, the second opening, or the third opening.

19 . The manufacturing method of claim 18 , wherein:

the sub-opening is formed to be connected to the third opening; and

the additional layer is formed of a same layer as that of the transmission layer.

20 . The manufacturing method of claim 18 , wherein:

the sub-opening is formed to be connected to the first opening or the second opening; and

the additional layer is formed at a same layer as that of the first color conversion layer or the second color conversion layer.

21 . An electronic device comprising a display device, the display device comprising:

a display panel comprising:

a first substrate;

a thin film transistor on the first substrate;

a pixel definition layer on the thin film transistor; and

a plurality of emission layers at regions defined by the pixel definition layer;

a second substrate facing the first substrate;

a plurality of color filters between the first substrate and the second substrate;

a partition wall between the second substrate and the color filters, and including a first opening, a second opening, a third opening, and a sub-opening;

a first color conversion layer located in the first opening of the partition wall;

a second color conversion layer located in the second opening of the partition wall;

a transmission layer located in the third opening of the partition wall;

an additional layer located in the sub-opening of the partition wall; and

a spacer overlapping with the additional layer, wherein, in a plan view, the spacer overlaps with the sub-opening and is spaced apart from the first opening, the second opening, and the third opening, and

wherein, in the plan view, an area of the sub-opening is smaller than each of areas of the first opening, the second opening, and the third opening.

22 . The electronic device of claim 21 , wherein:

the sub-opening is connected to the third opening; and

the additional layer is at a same layer as that of the transmission layer.