Abstract: A GOA unit, a GOA circuit and a display panel are provided. The GOA unit includes a pull-up module, a pull-up holding module, a converting module, a pull-down holding module, and a pull-down module. Each module can be implemented with N-type TFTs. The GOA unit could generate a negative impulse waveform for internal feedback mechanism.

Abstract: A pixel driver circuit and a display panel are provided. The pixel driver circuit includes a control transistor, a first transistor, a fourth transistor, a light emitting device. A gate electrode of the control transistor receives first control signals, a source electrode of the control transistor receives data signals. A drain electrode of the control transistor is connected to a gate electrode of the first transistor and a gate electrode of the fourth transistor. A source electrode of the first transistor receives first power signals. A source electrode of the fourth transistor receives second power signals. Drain electrodes of the first transistor and fourth transistor are connected to an anode of the light emitting device. The first transistor and fourth transistor correspond to a first driving time period and a second driving time period alternated. The pixel driver circuit and display panel of the present invention enhance display effect.

Abstract: Embodiments of the application provide a gate driver on array (GOA) circuit and display apparatus, which is capable of outputting signals of positive and negative pulse waveforms using a simplified circuit design.

Abstract: The present invention provides a method of driving a display panel and a driving device. The present invention determines sub-pixels shared by sub-pixel rendering technology through comparing differences of the color components, and the sub-pixels shared by the display image are not fixed. Since the sub-pixels with the smallest absolute value of the color component difference are selected for sharing, a contrast of an edge region of an image is improved, and distortion of an edge region of an image is reduced.

Abstract: Embodiments of the application provide a gate driver on array (GOA) circuit and a display apparatus, which is capable of outputting signals of negative pulse waveforms using a simplified circuit design and improving output capability of the GOA circuit by changing a high voltage level of a clock signal to a voltage level of a first high level signal. Thus, the GOA circuit is improved by the first capacitor and the second capacitor, which make the GOA circuit more stable.

Abstract: Embodiments of the application provide a gate driver on array (GOA) circuit and a display apparatus, which is capable of outputting signals of negative pulse waveforms using a simplified circuit design and improving output capability of the GOA circuit by changing a high voltage level of a clock signal to a voltage level of a first high level signal. Thus, the GOA circuit is improved by the first capacitor and the second capacitor, which make the GOA circuit more stable.

Abstract: A method, an apparatus, and a system of compensating an organic light emitting diode (OLED) in a display panel for efficiency decay are disclosed. The method includes acquiring an IV curve of the OLED device according to a drain voltage with grayscales applied to a driven thin-film transistor (TFT) and an output current; comparing the IV curve with an IV curve database model, and determining a target curve and a first match curve; determining a second match curve according to a measuring moment; acquiring a target voltage corresponding to a target luminance; acquiring a target current corresponding to the target voltage; and acquiring, based on a characteristic curve of the driven TFT, a compensated gate voltage through the target voltage, the target current, and the drain voltage. The OLED device can be compensated for efficiency decay. Display effects are improved, causing the display panel to display uniformly.

Abstract: A gate driving unit and a gate driving method are provided. The gate driving unit includes an input unit, a driving unit, a pull-down unit, and a pull-down control unit. The pull-down unit has an output terminal of a current stage cascaded signal and an output terminal; in the pull-up phase, the output terminal of the current stage cascaded signal and the output terminal output signal, a voltage of the output terminal of the current stage cascaded signal is pulled down to a first reference low electric level, and a voltage of the output terminal is pulled down to a second reference low electric level.

Abstract: A method, an apparatus, and a system of compensating an organic light emitting diode (OLED) in a display panel for efficiency decay are disclosed. The method includes acquiring an IV curve of the OLED device according to a drain voltage with grayscales applied to a driven thin-film transistor (TFT) and an output current; comparing the IV curve with an IV curve database model, and determining a target curve and a first match curve; determining a second match curve according to a measuring moment; acquiring a target voltage corresponding to a target luminance; acquiring a target current corresponding to the target voltage; and acquiring, based on a characteristic curve of the driven TFT, a compensated gate voltage through the target voltage, the target current, and the drain voltage. The OLED device can be compensated for efficiency decay. Display effects are improved, causing the display panel to display uniformly.

Abstract: Embodiments of the application provide a gate driver on array (GOA) circuit and display apparatus, which is capable of outputting signals of positive and negative pulse waveforms using a simplified circuit design.

Abstract: A gate driving unit and a gate driving method are provided. The gate driving unit includes an input unit, a driving unit, a pull-down unit, and a pull-down control unit. The pull-down unit has an output terminal of a current stage cascaded signal and an output terminal; in the pull-up phase, the output terminal of the current stage cascaded signal and the output terminal output signal, a voltage of the output terminal of the current stage cascaded signal is pulled down to a first reference low electric level, and a voltage of the output terminal is pulled down to a second reference low electric level.