Pick-and-place apparatus of micro LED chip for chip-repairing of micro LED display

A pick-and-place apparatus of micro LED chip for chip-repairing of micro LED display, comprising:

• a nozzle having a capillary form and having a nozzle tip that is smaller than a top size area of the micro LED chip;
• a pressure adjustment part that applies negative pressure inside the nozzle to adsorb the micro LED chip to the nozzle tip and applies positive pressure inside the nozzle or removes the negative pressure inside the nozzle to mount the micro LED chip adsorbed to the nozzle tip onto a repair pixel;
• an imaging part that monitors a position and posture of the micro LED chip adsorbed to the nozzle tip in real time;
• a moving part that moves the nozzle;
• a control part that receives image information from the imaging part, and mounts the micro LED chip onto the repair pixel while controlling the pressure adjustment part and the moving part;
• and
• a pressing force measurement part that measures a force pressing to the nozzle in order to mount the micro LED chip onto the repair pixel;
• wherein the pressing force measurement part measures a bent degree of the nozzle and measures the pressing force based on the measured bent degree of the nozzle.