Abstract:
A device and system for thin wafer cleaning is disclosed. A preferred embodiment comprises a spin chuck having at least three holding clamps. A thin wafer with a wafer frame is mounted on the spin chuck through a tape layer. When the holding clamps are unlocked, there is no interference with the removal and placement of the wafer frame. On the other hand, when the holding clamps are locked, the holding clamps are brought into contact with the outer edge of the wafer frame so as to prevent the wafer frame from moving laterally. Furthermore, the shape of the holding clamps in a locked position is capable of preventing the wafer frame from moving vertically.
Abstract:
A device and system for thin wafer cleaning is disclosed. A preferred embodiment comprises a spin chuck having at least three holding clamps. A thin wafer with a wafer frame is mounted on the spin chuck through a tape layer. When the holding clamps are unlocked, there is no interference with the removal and placement of the wafer frame. On the other hand, when the holding clamps are locked, the holding clamps are brought into contact with the outer edge of the wafer frame so as to prevent the wafer frame from moving laterally. Furthermore, the shape of the holding clamps in a locked position is capable of preventing the wafer frame from moving vertically.
Abstract:
A method includes bonding a wafer on a carrier through an adhesive, and performing a thinning process on the wafer. After the step of performing the thinning process, a portion of the adhesive not covered by the wafer is removed, while the portion of the adhesive covered by the wafer is not removed.
Abstract:
A method includes bonding a wafer on a carrier through an adhesive, and performing a thinning process on the wafer. After the step of performing the thinning process, a portion of the adhesive not covered by the wafer is removed, while the portion of the adhesive covered by the wafer is not removed.
Abstract:
The embodiments described provide apparatus and methods for bonding wafers to carriers with the surface contours of plates facing the substrates or carriers are modified either by re-shaping, by using height adjusters, by adding shim(s), or by zoned temperature control. The modified surface contours of such plates compensate the effects that may cause the non-planarity of bonded substrates.
Abstract:
This description relates to a wafer debonding and cleaning apparatus including an automatic wafer handling module. The automatic wafer handling module loads a semiconductor wafer into a wafer debonding module for a debonding process. The automatic wafer handling module removes the semiconductor wafer from the debonding module and loads the semiconductor wafer into a wafer cleaning module for a cleaning process.
Abstract:
A motor control device is electrically connected with a motor. The motor control device includes a controller and a driving circuit. The controller has a default value of time and generates a first driving signal and a second driving signal. The driving circuit includes a first switching element and a second switching element, the first switching element and the second switching element receive the first driving signal and the second driving signal respectively, and the first switching element and the second switching element are switched on or switched off alternately according to the first driving signal and the second driving signal respectively, so as to drive the motor to operate. The controller switches off the first switching element by the first driving signal the default value of time before the controller switches on the second switching element by the second driving signal, and the controller switches off the second switching element by the second driving signal the default value of time before the controller switches on the first switching element by the first driving signal.
Abstract:
A fan rotation speed control circuit comprises an AC power source, a coil electrically connected with the AC power source, a sensing module having a first resistor and a sensing device in parallel connection with mentioned first resistor, a capacitor, a DIAC, and a TRIAC having a first terminal, a second terminal and a gate terminal, wherein mentioned coil electrically connected with the first resistor and the sensing device, mentioned capacitor electrically connected with the first resistor and the sensing device, mentioned DIAC electrically connected with the first resistor, the sensing device and the capacitor, mentioned first terminal electrically connected with the first resistor, the sensing device and the coil, mentioned second terminal electrically connected with the capacitor and the AC power source, and mentioned gate terminal electrically connected with the DIAC.
Abstract:
A fan motor speed control circuit and a voltage-regulating module thereof are disclosed. The fan motor speed control circuit includes the voltage-regulating module and a driving module electrically connected to the voltage-regulating module. The driving module includes a pulse signal generating unit, a speed control unit, and a drive unit. The speed control unit compares a high frequency pulse signal generated by the pulse signal generating unit with a variable reference voltage signal output by the voltage-regulating module, and then outputs a control signal to the drive unit to proceed the speed control of the fan motor. In application, the voltage-regulating module and the driving module are electrically connected to a voltage source in parallel.
Abstract:
A method and system for delivering a mixed slurry for use chemical mechanical polishing operation. A first slurry may be mixed with a second slurry to provide a mixed slurry thereof. A flow rate and a mixing ratio associated with the mixed slurry can be controlled to provide an accurate flow rate control and adjustable mixing ratio thereof. The first slurry and the second slurry may be mixed in-line utilizing an in-line mixing mechanism to provide a mixed slurry thereof. Alternatively, the first and second slurries may be pre-mixed utilizing a pre-mixing mechanism to provide a mixed slurry there.