System for transferring micro LED
A system for transferring a micro LED includes a micro LED dropped into a solution. The system further includes a micro LED grip body immersed in the solution, the micro LED grip body including a porous member having pores, and gripping the micro LED with a grip surface where the pores are provided. An upper surface of the porous member is configured with a seating recess having a guide inclined portion on which the micro LED is mounted and a shielding portion provided around the seating recess.
1. A system for transferring a micro LED, the system comprising:
a micro LED dropped into a solution; and
a micro LED grip body immersed in the solution, including a porous member having pores, and gripping the micro LED with a grip surface where the pores are provided,
wherein an upper surface of the porous member is configured with a seating recess having a guide inclined portion on which the micro LED is mounted and a shielding portion provided around the seating recess.
2. The system of claim 1 , wherein the micro LED grip body grips the micro LED with a suction force applied to the pores.
3. The system of claim 2 , wherein the micro LED grip body is lifted such that the grip surface is brought into close contact with the micro LED and the micro LED is gripped by the suction force.
4. The system of claim 2 , wherein the micro LED dropped in the solution is lowered by the suction force of the micro LED grip body such that the micro LED is attracted to the grip surface of the micro LED grip body.
5. The system of claim 1 , wherein the micro LED grip body is provided with an electroosmotic pump such that the micro LED grip body grips the micro LED according to operation of the electroosmotic pump.
6. The system of claim 5 , wherein the electroosmotic pump includes:
a first electrode provided on a first surface of the porous member;
a second electrode provided on a second surface of the porous member; and
a power supply unit connected to the first and second electrodes to apply voltage.
7. The system of claim 5 , wherein the electroosmotic pump generates a flow in which the solution flows into the porous member, thereby attracting the micro LED to the grip surface of the micro LED grip body.
8. The system of claim 5 , wherein the electroosmotic pump controls a flow of an electrolyte filled in the porous member so that the micro LED grip body grips the micro LED.
9. The system of claim 5 , wherein the electroosmotic pump is driven by a pulse wave.
10. The system of claim 9 , wherein the pulse wave is controlled such that a downward force of the solution is larger than an upward force of the solution.
11. The system of claim 1 , wherein the porous member includes a porous ceramic.
12. The system of claim 1 , wherein the porous member includes an anodic oxide film.