摘要:
A driving circuit comprises a plurality of shift register (SR). An ith SR among the plurality SR's comprises a resetting circuit, an input switch, a capacitor, and an output circuit. The resetting circuit is used for adjusting a resetting voltage according to a control voltage. The input switch is used for adjusting the control voltage according to an (i−2)th driving signal from an (i−2)th SR among the plurality of SR's, selectively. The capacitor is used for adding a voltage variation of a boosting signal to the control voltage. The output circuit is used for taking an ith input signal as an ith output signal according to the control voltage and the resetting voltage, selectively. The positive edge of the boosting voltage leads the negative edge of the ith input signal.
摘要:
A driving circuit comprises a plurality of shift register (SR). An ith SR among the plurality SR's comprises a resetting circuit, an input switch, a capacitor, and an output circuit. The resetting circuit is used for adjusting a resetting voltage according to a control voltage. The input switch is used for adjusting the control voltage according to an (i−2)th driving signal from an (i−2)th SR among the plurality of SR's, selectively. The capacitor is used for adding a voltage variation of a boosting signal to the control voltage. The output circuit is used for taking an ith input signal as an ith output signal according to the control voltage and the resetting voltage, selectively. The positive edge of the boosting voltage leads the negative edge of the ith input signal.
摘要:
A driving circuit comprises a plurality of shift register (SR). An ith SR among the plurality SR's comprises a resetting circuit, an input switch, a capacitor, and an output circuit. The resetting circuit is used for adjusting a resetting voltage according to a control voltage. The input switch is used for adjusting the control voltage according to an (i−2)th driving signal from an (i−2)th SR among the plurality of SR's, selectively. The capacitor is used for adding a voltage variation of a boosting signal to the control voltage. The output circuit is used for taking an ith input signal as an ith output signal according to the control voltage and the resetting voltage, selectively. The positive edge of the boosting voltage leads the negative edge of the ith input signal.
摘要:
A liquid crystal display includes a liquid crystal panel, a source driving circuit, a timing controller, and a gate driving circuit. The source driving circuit converts frame data into a plurality of data voltages, and charges/discharges a first data line according to a data voltage of the plurality of data voltages. The gate driving circuit enables a gate line corresponding to the data voltage. The timing controller sequentially enables a plurality of switch enable lines corresponding to the gate line. A plurality of pixel switches are turned on according to the enabled gate line. A data line switch is turned on according to an enabled switch enable line. The data voltage charges/discharges a corresponding pixel through the turned-on data line switch and one of the turned-on pixel switches.
摘要:
A gate driver has a plurality of shift registers. Each of the shift registers has at least three input terminals, two signal input terminals, a pull-up circuit, a driving circuit, a stability pull-down control circuit, and a stability pull-down circuit. The three input terminals of each shift register receive three different clock signals. Accordingly, the driving circuit and the stability pull-down control circuit of each shift register are controlled according to the three clock signals, such that a glitch causing by the coupling effect of the parasitic capacitor of the driving circuit is avoided and the stability of the gate driver is improved.
摘要:
A shift register includes a plurality of shift register circuits, where an Nth shift register circuit of the shift register includes a driving unit, a boost unit, a pull up unit, and a key pull down unit. The driving unit is for providing a gate signal, a first boost control signal, and a first transmission control signal according a first driving signal and a high frequency clock signal. The boost unit is for boosting the voltage of the first driving signal according to a first boost signal. The pull up unit is for providing a second driving signal according to the first transmission control signal and the gate signal, and is for providing a second boost signal according to the first boost control signal and a second boost control signal. The key pull down unit is for pulling down the first driving signal according to a second transmission control signal.
摘要:
A touch display apparatus includes a touch driver and a display driver. The touch driver outputs touch signals to drive a touch panel. The display driver outputs scan signals to drive a display panel. A display driver has a plurality of shift registers, and each of the plurality of shift registers includes a pull-up unit, a driving unit, a pull-down unit and a holding unit. The pull-up unit is electrically connected to a driving node for outputting a driving voltage. The driving unit is electrically connected to the driving node for outputting a first scan signal according to a clock. A pull-down unit is electrically connected to the driving node and the output terminal, for pulling down the voltage level of the driving voltage and the first scan signal, respectively. The holding unit is electrically connected to the driving node.
摘要:
A shift register circuit includes a first transistor, a capacitor, a pull-up control circuit, a first pull-down circuit, a pull-down control circuit, a second pull-down circuit and a compensation circuit. The compensation circuit further includes a second transistor, a third transistor, a fourth transistor, a fifth transistor and a sixth transistor. The second transistor, the third transistor, the fourth transistor, and the fifth transistor are corporately used to output a compensation pulse; and the sixth transistor is used to output the compensation pulse to a gate terminal of the first transistor thereby compensating a control signal.
摘要:
A liquid crystal display includes a liquid crystal panel, a source driving circuit, a timing controller, and a gate driving circuit. The source driving circuit converts frame data into a plurality of data voltages, and charges/discharges a first data line according to a data voltage of the plurality of data voltages. The gate driving circuit enables a gate line corresponding to the data voltage. The timing controller sequentially enables a plurality of switch enable lines corresponding to the gate line. A plurality of pixel switches are turned on according to the enabled gate line. A data line switch is turned on according to an enabled switch enable line. The data voltage charges/discharges a corresponding pixel through the turned-on data line switch and one of the turned-on pixel switches.
摘要:
A pixel driving circuit includes a light emitting diode (LED), a data writing unit, two transistors and two compensation units. The gate of the first transistor is coupled to the data writing unit for determining the current flow of the LED. The first compensation unit is coupled to the first transistor for providing a current path from the gate of the first transistor to a first voltage source and a current path from the gate of the first transistor to a second voltage source. The second compensation unit includes a first capacitor coupled to the gate of the first transistor for voltage coupling and providing a differential voltage that equals to the OLED to the gate of the first transistor. The second transistor is coupled between the first voltage source and a second voltage source for enabling or disabling the current flow between the first and second voltage sources.