Transfer system and transfer method for microelements, manufacturing method for microelement device and microelement device made therefrom, and electronic apparatus including the microelement device

A transfer method for microelements, the transfer method comprising:

• a providing step of providing a transfer system, the transfer system including a main pick-up device for picking up the microelements, and a testing device, the testing device including a testing platform, a testing circuit mounted to the testing platform, and a plurality of testing electrodes mounted to the testing platform and electrically connected to the testing circuit;
• a pick-up step of operating the main pick-up device to pick up the microelements from a carrying substrate;
• a connecting step of operating the main pick-up device to connect the microelements to the testing electrodes of the testing device;
• a testing step of applying a testing voltage to the testing circuit to test the microelements and to distinguish unqualified ones of the microelements from qualified ones of the microelements;
• and
• a transferring step of operating the main pick-up device to release the qualified ones of the microelements to a receiving substrate
• wherein the providing step further includes providing the transfer system with a first carrier plate for holding the carrying substrate, and a second carrier plate for holding the receiving substrate,
• wherein the providing step further includes providing the transfer system with an inverse pick-up device for exerting an attraction forces to the microelements that is greater than an attraction force exerted to the microelements by the main pick-up device, and
• wherein the transfer method further comprises, between the testing step and the transferring step, a selecting step of operating the inverse pick-up device to pick up the unqualified one of the microelements from the main pick-up device.