Abstract: A thin film transistor includes a gate electrode embedded in an insulating layer that overlies a substrate, a gate dielectric overlying the gate electrode, an active layer comprising a compound semiconductor material and overlying the gate dielectric, and a source electrode and drain electrode contacting end portions of the active layer. The gate dielectric may have thicker portions over interfaces with the insulating layer to suppress hydrogen diffusion therethrough. Additionally or alternatively, a passivation capping dielectric including a dielectric metal oxide material may be interposed between the active layer and a dielectric layer overlying the active layer to suppress hydrogen diffusion therethrough.

Abstract: A thin film transistor includes a gate electrode embedded in an insulating layer that overlies a substrate, a gate dielectric overlying the gate electrode, an active layer comprising a compound semiconductor material and overlying the gate dielectric, and a source electrode and drain electrode contacting end portions of the active layer. The gate dielectric may have thicker portions over interfaces with the insulating layer to suppress hydrogen diffusion therethrough. Additionally or alternatively, a passivation capping dielectric including a dielectric metal oxide material may be interposed between the active layer and a dielectric layer overlying the active layer to suppress hydrogen diffusion therethrough.

Abstract: A motor driving circuit for receiving a control signal to output at least one output current for driving a motor is provided. The motor driving circuit includes an input module, a gain module, an output module, a first slew rate limiting module, and a second slew rate limiting module. The first slew rate limiting module has a first limiting parameter. The second slew rate includes a second limiting parameter. An output current is outputted by the output terminal. When a rising slew rate of the output current is less than a first slew rate value, the first slew rate limiting module does not operate. When the rising slew rate of the output current is greater than the first slew rate value, the motor driving circuit limits the rising slew rate of the output current based on the first limiting parameter of the first slew rate limiting module.

Abstract: A motor control system includes a motor driving circuit and a motor. The motor driving circuit includes a control module, a PWM signal detecting module, a transient state detecting module and a driving module. The PWM signal detecting module is electrically connected to the control module to receive a PWM signal and to convert the PWM signal into a first digital PWM control signal. The transient state detecting module provides a second digital PWM control signal to the control module according to the first digital PWM control signal at a first time point and the first digital PWM control signal at a second time point. The driving module receives at least one driving signal from the control module. The control module determines whether to turn off a low side switch of the driving module according to the second digital PWM control signal.

Abstract: A motor driving circuit includes a first output switch, a second output switch, a first adjusting module, and a second adjusting module. A rising slew rate of the first output current along the first direction is adjusted according to the first adjusting parameter of the first adjusting module. A falling slew rate of the first output current along the first direction is adjusted according to the second adjusting parameter of the second adjusting module.

Abstract: A motor control system includes a motor driving circuit and a motor. The motor driving circuit includes a control module, a PWM signal detecting module, a transient state detecting module and a driving module. The PWM signal detecting module is electrically connected to the control module to receive a PWM signal and to convert the PWM signal into a first digital PWM control signal. The transient state detecting module provides a second digital PWM control signal to the control module according to the first digital PWM control signal at a first time point and the first digital PWM control signal at a second time point. The driving module receives at least one driving signal from the control module. The control module determines whether to turn off a low side switch of the driving module according to the second digital PWM control signal.

Abstract: A motor driving circuit for receiving a control signal to output at least one output current for driving a motor is provided. The motor driving circuit includes an input module, a gain module, an output module, a first slew rate limiting module, and a second slew rate limiting module. The first slew rate limiting module has a first limiting parameter. The second slew rate includes a second limiting parameter. An output current is outputted by the output terminal. When a rising slew rate of the output current is less than a first slew rate value, the first slew rate limiting module does not operate. When the rising slew rate of the output current is greater than the first slew rate value, the motor driving circuit limits the rising slew rate of the output current based on the first limiting parameter of the first slew rate limiting module.

Abstract: A motor driving circuit includes a first output switch, a second output switch, a first adjusting module, and a second adjusting module. A rising slew rate of the first output current along the first direction is adjusted according to the first adjusting parameter of the first adjusting module. A falling slew rate of the first output current along the first direction is adjusted according to the second adjusting parameter of the second adjusting module.

Abstract: The present disclosure illustrates a motor speed curve control circuit. The motor speed curve control circuit is configured for adjusting a speed of a motor according to a motor speed curve. The motor speed curve control circuit comprises a divider resistor module, an analog-to-digital converter and an arithmetic unit. The resistor module is configured for generating at least one turning-point voltage. The turning-point voltage is used to adjust a slope of the motor speed curve. The analog-to-digital converter converts the turning-point voltage to digital form. The arithmetic unit sets a speed associated with the turning-point voltage corresponding to a first preset duty cycle in the motor speed curve, such that the motor speed curve becomes linear. The arithmetic unit generates a second pulse width modulation signal according to the adjusted motor speed curve and a first pulse width modulation signal to drive the motor.

Abstract: The present disclosure illustrates a motor speed curve control circuit. The motor speed curve control circuit is configured for adjusting a speed of a motor according to a motor speed curve. The motor speed curve control circuit comprises a divider resistor module, an analog-to-digital converter and an arithmetic unit. The resistor module is configured for generating at least one turning-point voltage. The turning-point voltage is used to adjust a slope of the motor speed curve. The analog-to-digital converter converts the turning-point voltage to digital form. The arithmetic unit sets a speed associated with the turning-point voltage corresponding to a first preset duty cycle in the motor speed curve, such that the motor speed curve becomes linear. The arithmetic unit generates a second pulse width modulation signal according to the adjusted motor speed curve and a first pulse width modulation signal to drive the motor.