Method for transferring electronic device
A method for transferring an electronic device includes steps as follows. A flexible carrier is provided and has a surface with a plurality of electronic devices disposed thereon. A target substrate is provided corresponding to the surface of the flexible carrier. A pin is provided, and a pin end thereof presses on another surface of the flexible carrier without the electronic devices disposed thereon, so that the flexible carrier is deformed, causing at least one of the electronic devices to move toward the target substrate and to be in contact with the target substrate. A beam is provided to transmit at least a portion of the pin and emitted from the pin end to melt a solder. The electronic device is fixed on the target substrate by soldering. The pin is moved to restore the flexible carrier to its original shape, allowing the electronic device fixed by soldering to separate from the carrier.
1. A method for transferring an electronic device, comprising:
providing a flexible carrier having a first surface on which the electronic device to be transferred is disposed and a second surface which is opposite to the first surface;
providing a target substrate;
providing a pin which is light-transmissible and has a pressing end;
arranging the flexible carrier and the target substrate in a way that the flexible carrier is spaced from the target substrate with the first surface thereof facing the target substrate;
deforming the flexible carrier by exerting the pin to press the second surface of the flexible carrier with the pressing end thereof at a position corresponding to the electronic device disposed on the first surface of the flexible carrier until the electronic device is in contact with the target substrate;
applying an energy beam which is emitted from a light source separate from the pin and then travels through a material of the pin and goes out from the pressing end of the pin to bond the electronic device onto the target substrate; and
releasing the pin from pressing the flexible carrier.
2. The method for transferring the electronic device according to claim 1 , wherein the pin is made of a transparent material.
3. The method for transferring the electronic device according to claim 1 , wherein the energy beam is a laser beam.
4. The method for transferring the electronic device according to claim 1 , further comprising:
applying a solder onto the electronic device and/or the target substrate before applying the energy beam.
5. The method for transferring the electronic device according to claim 2 , wherein the transparent material is quartz.
6. The method for transferring the electronic device according to claim 1 , wherein the electronic device is an LED chip.
7. A method for making an LED display, comprising:
performing the method for transferring the electronic device according to claim 6 to transfer the LED chip onto a TFT substrate.