Abstract: A ballbar testing tune-up method for machine tool includes the steps of letting a machine tool system execute a ballbar test; obtaining a phase characteristic and a peak-value characteristic; creating a Lagrange interpolation polynomial and inputting a servo controller parameter, a phase characteristic and a peak-value characteristic of the machine tool system each time when executing the ballbar test, and obtaining a proposed servo parameter. This method is simple and easy without incurring additional equipment costs, but just using existing equipment to find the proposed servo parameter quickly and input it into a machine tool system, so as to improve the response issue of a servo system and reduce manufacturing contour error to enhance the working precision of the machine tool system.

Abstract: A ballbar testing tune-up method for machine tool includes the steps of letting a machine tool system execute a ballbar test; obtaining a phase characteristic and a peak-value characteristic; creating a Lagrange interpolation polynomial and inputting a servo controller parameter, a phase characteristic and a peak-value characteristic of the machine tool system each time when executing the ballbar test, and obtaining a proposed servo parameter. This method is simple and easy without incurring additional equipment costs, but just using existing equipment to find the proposed servo parameter quickly and input it into a machine tool system, so as to improve the response issue of a servo system and reduce manufacturing contour error to enhance the working precision of the machine tool system.

Abstract: The present application relates to a light emission control and scan driver and a display device having the drivers. A light emission control and scan driver includes a plurality of driver stages for outputting light emission control signals and scan signals, each of which including: a light emission control driving unit for providing control signals to the scan units and a scan driving unit. Control signals may be light emission control signals. The light emission control driving unit has a first input signal terminal, a first clock terminal, a second clock terminal and a light emission control output terminal, and outputs light emission control signals at the light emission control output terminal based on input signals input at the first input signal terminal, light emission timing control signals input at the first clock terminal and inverted light emission timing control signals input at the second clock terminal.

Abstract: A display driver comprises a plurality of driver stages. For each stage, a source node of a first transistor is coupled to a first power supply, a gate node is coupled to a first node, and a drain node is coupled to a first output end. A source node of a second transistor is coupled to the first output end and a gate node of is coupled to a second controller and a drain node is electrically coupled to a first input end. The first controller is coupled to a second input end and a third input end to provide sampled signals to the first node and a second output end. The second controller is coupled to the first controller and a second power supply. The first output end of each driver stage is coupled to the third input end of the next driver stage.

Abstract: A scan control line driving module and a display device. The scan control line driving module includes a first grade scan control line driving unit for receiving a first timing sequence control signal outputted by a timing sequence controller and for outputting a first grade scan signal to a panel display module and a second grade scan control line driving unit. The second grade scan control line driving unit receives a second timing sequence control signal from the timing sequence controller and the first grade scan signal from the first grade scan control line driving unit. The second grade scan control line driving unit outputs a second grade scan signal to the panel display module and a scan control line driving unit of the next grade. Each scan control line driving unit includes only two control input ends to save the space for wires.

Abstract: The present disclosure provides a pixel driving circuit and a display device, the pixel driving circuit includes: a control unit; a capacitor; a first transistor; a second transistor; a third transistor and a fourth transistor. The present disclosure can effectively compensate the variation of the threshold voltage of the drive thin film transistor by controlling the thin film transistors, thus prevent nonuniform brightness of a screen due to nonuniform current, and extend lifespan of the screen.

Abstract: A display driver comprises a plurality of driver stages. For each stage, a source node of a first transistor is coupled to a first power supply, a gate node is coupled to a first node, and a drain node is coupled to a first output end. A source node of a second transistor is coupled to the first output end and a gate node of is coupled to a second controller and a drain node is electrically coupled to a first input end. The first controller is coupled to a second input end and a third input end to provide sampled signals to the first node and a second output end. The second controller is coupled to the first controller and a second power supply. The first output end of each driver stage is coupled to the third input end of the next driver stage.

Abstract: The present application relates to a light emission control and scan driver and a display device having the drivers. A light emission control and scan driver includes a plurality of driver stages for outputting light emission control signals and scan signals, each of which including: a light emission control driving unit for providing control signals to the scan units and a scan driving unit. Control signals may be light emission control signals. The light emission control driving unit has a first input signal terminal, a first clock terminal, a second clock terminal and a light emission control output terminal, and outputs light emission control signals at the light emission control output terminal based on input signals input at the first input signal terminal, light emission timing control signals input at the first clock terminal and inverted light emission timing control signals input at the second clock terminal.

Abstract: The present disclosure provides a pixel driving circuit and a display device, the pixel driving circuit includes: a control unit; a capacitor; a first transistor; a second transistor; a third transistor and a fourth transistor. The present disclosure can effectively compensate the variation of the threshold voltage of the drive thin film transistor by controlling the thin film transistors, thus prevent nonuniform brightness of a screen due to nonuniform current, and extend lifespan of the screen.

Abstract: An operation monitor device for a hardware component detects a load current that is changed due to the operation of the hardware component through a pulse width modulation (PWM) module; thereby generating a voltage variation. A monitoring unit outputs a detecting result to a system by detecting the voltage variation and generates a modulating signal in response to a monitor signal fed back by the system according to the detecting result, such that a controller generates a reference voltage variation according to the modulating signal. In this way, the load current changes as the load of the hardware component increases, such that the controller changes the generated reference voltage and further modulates the output voltage supplied to the hardware component by the PWM module, thus meeting the execution state of the hardware component and improving performance.