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

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.

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.

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.