Display device and method for manufacturing the same
A display device includes: a substrate; a plurality of first electrodes positioned on the substrate; a lower partition wall configured to include a plurality of pixel openings that overlap the first electrodes; an outer partition wall positioned on at least a portion of the lower partition wall; an inner partition wall positioned on another portion of the lower partition wall; an emission layer disposed on each of the first electrodes; and a second electrode disposed on the emission layer.
1 . A display device comprising:
a substrate;
a plurality of first electrodes positioned on the substrate;
a lower partition wall configured to include a plurality of pixel openings that overlap the plurality of first electrodes;
an outer partition wall positioned on at least a portion of the lower partition wall;
an inner partition wall positioned on another portion of the lower partition wall;
an emission layer disposed on each of the first electrodes; and
a second electrode disposed on the emission layer; wherein
the substrate includes a pixel group including a plurality of pixels,
the emission layer is disposed in each of the pixels,
the emission layer in a pixel is spaced apart in a first direction and a second direction in a plan view from the emission layer in adjacent pixels in the pixel group by the inner partition wall, and
the outer partition wall and the inner partition wall do not overlap each other in a third direction perpendicular to the first direction and the second direction.
2 . The display device of claim 1 , wherein
the inner partition wall is surrounded by the outer partition wall.
3 . The display device of claim 2 , wherein
the outer partition wall includes a material that is different from a material of the inner partition wall.
4 . The display device of claim 3 , wherein
surface energy of the outer partition wall is lower than surface energy of the inner partition wall.
5 . The display device of claim 3 , wherein
a contact angle of the outer partition wall is higher than a contact angle of the inner partition wall.
6 . The display device of claim 5 , wherein
the contact angle of the outer partition wall is 50 degrees or more, and
the contact angle of the inner partition wall is greater than or equal to 40 degrees and less than 50 degrees.
7 . The display device of claim 2 , wherein
a thickness of the outer partition wall is thicker than a thickness of the inner partition wall.
8 . The display device of claim 2 , wherein
the outer partition wall has a shape surrounding the pixel group, and
the inner partition wall is positioned between the pixels positioned in the pixel group.
9 . The display device of claim 8 , wherein
the outer partition wall is formed to have a rectangular shape in a plan view, and
the inner partition wall is formed to have a cross shape in a plan view.
10 . The display device of claim 8 , wherein
the emission layer includes:
an individual emission layer, and
a common layer positioned at an upper side or a lower side of the individual emission layer.