Display device and method of fabricating the same
A display device may include a first electrode and a second electrode spaced from each other on a substrate. A light emitting element may be on the first electrode and the second electrode. A first insulating pattern may be on the light emitting element. A first contact electrode may be on a first side of the first insulating pattern and contacting a first end of the light emitting element. A second insulating pattern may be on the first insulating pattern and partially covering the first contact electrode. A third insulating layer may be on the second insulating pattern. A second contact electrode may be on a second side of the first insulating pattern, and contact a second end of the light emitting element that is exposed from the first insulating pattern, the second insulating pattern, and the third insulating layer.
1 . A display device comprising:
a first electrode and a second electrode spaced from each other on a substrate;
a light emitting element on the first electrode and the second electrode;
a first insulating pattern on the light emitting element;
a first contact electrode adjacent to a first side of the first insulating pattern and contacting a first end of the light emitting element;
a second insulating pattern on the first insulating pattern and partially covering the first contact electrode;
a third insulating layer on the second insulating pattern; and
a second contact electrode adjacent to a second side of the first insulating pattern, and contacting a second end of the light emitting element that is exposed from the first insulating pattern, the second insulating pattern, and the third insulating layer.
2 . The display device according to claim 1 , wherein a stepped portion is formed in a portion of the first contact electrode that is covered with the second insulating pattern.
3 . The display device according to claim 2 , wherein a thickness of the portion of the first contact electrode is less than an average thickness of the first contact electrode.
4 . The display device according to claim 3 , wherein the average thickness of the first contact electrode is greater than an average thickness of the second contact electrode.
5 . The display device according to claim 1 , wherein the first insulating pattern and the second insulating pattern comprise an identical material or similar materials.
6 . The display device according to claim 1 , wherein the second insulating pattern is on the light emitting element at a position closer to the first electrode than to the second electrode.
7 . The display device according to claim 1 , wherein the first electrode and the second electrode are spaced from each other in a first direction, and
wherein a distance between the first contact electrode and the second contact electrode in the first direction is equal to or less than one third of a distance between the first electrode and the second electrode in the first direction.
8 . The display device according to claim 7 , wherein the distance between the first contact electrode and the second contact electrode is approximately 1 μm.
9 . The display device according to claim 8 , wherein a width of the second insulating pattern with respect to the first direction is approximately 2 μm.
10 . The display device according to claim 1 , wherein the second contact electrode partially covers the third insulating layer.
11 . The display device according to claim 10 , wherein the first contact electrode partially covers the first insulating pattern.
12 . The display device according to claim 11 , wherein the first contact electrode comprises:
a first part located between the first insulating pattern and the second insulating pattern; and
a second part located between the second insulating pattern and the third insulating layer.
13 . The display device according to claim 1 , wherein an average thickness of the first contact electrode is substantially identical with an average thickness of the second contact electrode.
14 . The display device according to claim 1 , further comprising color conversion particles on the light emitting element, and configured to convert light having a first color emitted from the light emitting element to light having a second color.
15 . A display device comprising:
a first electrode and a second electrode spaced from each other on a substrate;
a light emitting element on the first electrode and the second electrode;
an insulating pattern on the light emitting element;
a first contact electrode adjacent to a first side of the insulating pattern and contacting a first end of the light emitting element; and
a second contact electrode adjacent to a second side of the insulating pattern and contacting a second end of the light emitting element,
wherein a stepped portion is formed in a portion of the first contact electrode that overlaps the insulating pattern in a thickness direction of the substrate, and
wherein a thickness of the portion of the first contact electrode is less than an average thickness of the first contact electrode.
16 . The display device according to claim 15 , wherein the portion of the first contact electrode is located between the insulating pattern and the light emitting element.
17 . The display device according to claim 15 , wherein the insulating pattern is on the light emitting element at a position closer to the first electrode than to the second electrode.
18 . The display device according to claim 15 , wherein the first electrode and the second electrode touch the light emitting element.
19 . A method of fabricating a display device, comprising:
preparing a panel comprising a first electrode and a second electrode spaced from each other on a substrate, and a light emitting element on the first electrode and the second electrode;
forming a first insulating pattern on the light emitting element, the first insulating pattern exposing a first end of the light emitting element, and covering a second end of the light emitting element;
forming a first contact electrode on the first end of the light emitting element and the first electrode;
forming a second insulating pattern on the first insulating pattern and a portion of the first contact electrode;
exposing the second end of the light emitting element by forming a third insulating layer that covers the second insulating pattern and the first contact electrode and by partially etching the first insulating pattern, the second insulating pattern, and the third insulating layer; and
forming a second contact electrode on the second end of the light emitting element and the second electrode.
20 . The method according to claim 19 , further comprising forming the first contact electrode on the first end of the light emitting element and the first electrode after forming the second insulating pattern,
wherein a stepped portion is formed in a portion of the first contact electrode that is covered with the second insulating pattern.