Apparatus to control transfer parameters during transfer of semiconductor devices
An apparatus includes a transfer mechanism to transfer an electrically-actuatable element directly from a wafer tape to a transfer location on a circuit trace on a product substrate. The transfer mechanism includes one or more transfer wires. Two or more stabilizers disposed on either side of the one or more transfer wires. A needle actuator is connected to the one or more transfer wires and the two or more stabilizers to move the one or more transfer wires and the two or more stabilizers to a die transfer position.
1. An apparatus for executing a direct transfer of one or more semiconductor device die from a wafer tape to a substrate, the apparatus comprising:
a first frame configured to hold the wafer tape;
a second frame configured to secure the substrate such that a transfer surface is disposed facing the one or more semiconductor device die disposed on a first side of the wafer tape;
one or more transfer wires disposed adjacent a second side of the wafer tape opposite the first side, a length of the one or more transfer wires extending in a direction toward the wafer tape;
one or more stabilizers disposed adjacent the second side of the wafer tape, a length of the one or more stabilizers extending in a direction toward the wafer tape; and
a needle actuator configured to actuate the one or more transfer wires and the one or more stabilizers into a die transfer position at which at least one transfer wire and at least one stabilizer press on the second side of the wafer tape to press a semiconductor device die of the one or more semiconductor device die into contact with the transfer surface of the substrate.
2. The apparatus according to claim 1 , wherein the apparatus includes two or more stabilizers.
3. The apparatus according to claim 2 , wherein the needle actuator is configured to actuate the two or more stabilizers independently and simultaneously.
4. The apparatus according to claim 1 , wherein the needle actuator is configured to actuate the one or more transfer wires and the one or more stabilizers in a first direction, the first direction being toward the wafer tape.
5. The apparatus according to claim 4 , wherein the needle actuator is configured to actuate the one or more transfer needles and the one or more stabilizers concurrently in the first direction and sequentially in a second direction, the second direction being opposite the first direction.
6. The apparatus according to claim 1 , wherein the needle actuator includes an electromechanical actuator.
7. The apparatus according to claim 1 , wherein the apparatus further comprises a vacuum unit disposed adjacent the second side of the wafer tape, the vacuum unit being configured to engage during at least a portion of the direct transfer of the one or more semiconductor device die, wherein the vacuum unit is configured to remain engaged until the semiconductor device die is released from the wafer tape.
8. The apparatus according to claim 7 , wherein the vacuum unit is configured to minimize oscillation of the wafer tape during the direct transfer.