Abstract: The present invention provides a method of relocating optical devices onto a carrier substrate in a case where a pixel pitch of a display is not an integer multiple of a pitch of the optical devices arrayed on a sapphire substrate. A moving speed ratio between a donor substrate and a receptor substrate is determined from an array pitch (3, 4) of optical devices (2) formed on the sapphire substrate and an array pitch (5, 7) of optical devices to be transferred onto a carrier substrate (6), and the optical devices are subjected to LIFT (laser transferred) in synchronization with movement of the donor substrate, whereby the optical devices on the sapphire substrate are transferred onto the carrier substrate at an array pitch that is identical to the pixel pitch of the display.

Abstract: Proposed are a method and an apparatus for transferring devices arranged on a first substrate to a second substrate by using laser light while correcting positional deviations of the devices. The present invention involves: acquiring actual positional information about devices on the first substrate; performing grouping in accordance with a criterion determined on the basis of an allowable positional deviation amount; correcting, for each group unit, a position of the first substrate such that positions of the devices fall into a range of an allowable positional deviation amount; and applying laser light from the back surface of the first substrate and transferring the devices to the second substrate.