Device and method for reel-to-reel laser reflow

A reel-to-reel laser reflow device, the device comprising:

• a first reel to unwind a substrate wound in a roll type;
• a transfer unit to transfer the substrate unwound by the first reel;
• a pressure contacting unit to apply pressure to the substrate to bring the substrate to contact the transfer unit;
• a second reel to control a movement of the substrate;
• a solder forming unit to form a solder portion on the substrate;
• an element seating unit to seat an emission target element on the solder portion and seat a non-emission target element on the substrate;
• an optical unit to adjust an emission area of a laser beam so that a uniformized laser beam is emitted only to the emission target element seated on the solder portion;
• an inspection unit to inspect the substrate structure attached with the emission target element seated on the solder portion;
• and
• a third reel to wind the substrate structure that has passed through the inspection unit;
• wherein the transfer unit comprises:
• a conveyor on which the substrate is seated;
• a transfer module to feed a driving force to the second reel to thereby move the substrate to one side;
• a vacuum module to apply a vacuum pressure to bring a lower surface of the substrate in contact with an upper surface of the conveyor for transferring the substrate;
• and
• wherein the optical unit uniformizes the laser beam's energy, adjusts the laser beam's emission area, and emits the laser beam to reflow the solder portion positioned within the emission area to secure the emission target element to the substrate.