Self-assembly device and self-assembly method
A self-assembly device comprises a chamber configured to accommodate a fluid in which a plurality of light emitting devices are floated on a surface thereof, the fluid having a first height, a mounting part disposed on a bottom portion of the chamber to mount a substrate, a fluid level adjuster configured to adjust a height of the fluid, and a voltage supplier configured to apply a voltage to the substrate to assemble the floated plurality of light emitting devices when the height of the fluid decreases from the first height to a second height.
1 . A self-assembly device, comprising:
a chamber configured to accommodate a fluid in which a plurality of light emitting devices are floated on a surface thereof, the fluid having a first height;
a mounting part disposed on a bottom portion of the chamber to mount a substrate;
a fluid level adjuster configured to adjust a height of the fluid; and
a voltage supplier configured to apply a voltage to the substrate to assemble the floated plurality of light emitting devices when the height of the fluid decreases from the first height to a second height.
2 . The self-assembly device of claim 1 , wherein one surface of each of the plurality of floating light emitting devices has a hydrophobic-treated surface to have a assembly directionality.
3 . The self-assembly device of claim 2 , wherein an opposite surface opposite to the one surface has a hydrophilic-treated surface.
4 . The self-assembly device of claim 2 , wherein the plurality of light emitting devices comprises a drop device configured to drop on at least one or more regions of the surface of the fluid.
5 . The self-assembly device of claim 1 , wherein the mounting part has a fixing groove to have a size corresponding to a size of the substrate for fixing the substrate.
6 . The self-assembly device of claim 5 , wherein the fixing groove comprises a bottom portion having a flat surface, and
wherein the substrate is configured to contact the bottom portion of the fixing groove.
7 . The self-assembly device of claim 1 , wherein the fluid level adjuster comprises:
at least one or more fluid supply sources configured to supply the fluid into the chamber; and
at least one or more fluid exhausters configured to exhaust the fluid in the chamber.
8 . The self-assembly device of claim 7 , wherein the at least one or more fluid supply sources are installed on a side portion of the chamber, and
wherein the at least one or more fluid exhausters are installed on a bottom portion of the chamber.
9 . The self-assembly device of claim 1 , further comprising:
a recovery device configured to recover light emitting devices floating on the surface of the fluid without being assembled on the substrate.
10 . The self-assembly device of claim 9 , wherein the recovery device comprises:
a support member on the fluid having a third height; and
at least one or more magnets on the support member.
11 . The self-assembly device of claim 1 , further comprising:
a vibration generator configured to generate the vibration in the substrate so that defect light emitting devices among the light emitting devices assembled on the substrate are detached from the substrate.