Method for producing a light emitting diode supply substrate, method for producing a light emitting diode display, method for producing a division unit for a light emitting diode display, and method for producing a device supply substrate

A method for producing a display panel substrate on which a plurality of light emitting diodes are formed, comprising:

• a step A for providing a starting substrate on which the plurality of light emitting diodes are formed via GaN layer, the plurality of light emitting diodes being provided with electrodes on one surface which is on an opposite side of another surface facing the starting substrate;
• a step B for providing a first supply substrate including a quartz substrate and an adhesive layer formed on the quartz substrate;
• a step C for transferring the plurality of light emitting diodes on the starting substrate onto the first supply substrate by a laser lift-off method;
• a step D for selectively removing, by laser light irradiation, a defective light emitting diode among the plurality of light emitting diodes having been transferred onto the first supply substrate;
• a step E for re-adhering a normal light emitting diode onto an exposed part of the adhesive layer from which the defective light emitting diode has been removed;
• and
• a step F for arranging the plurality of light emitting diodes, in which the defective light emitting diode has been replaced with the normal light emitting diode, on the display panel substrate.