A display system includes a driver for operating a panel having a plurality of pixels arranged by a plurality of first lines and at least one second line The driver includes a driver output unit for providing to the panel a single driver output for activating the plurality of first lines, the single driver output being demultiplexed on the panel to activate each first line.

The present application provides a method, a device and a system for determining an actual option common voltage of a display panel. The method for determining the actual option common voltage of the display panel includes the following steps: acquiring a first common voltage and a second common voltage for fitting a curve; acquiring a first flicker corresponding to the first common voltage and a second flicker corresponding to the second common voltage; acquiring a first Vcom-Flicker curve according to the first common voltage and the first flicker, and acquiring a second Vcom-Flicker curve according to the second common voltage and the second flicker; and determining a common voltage at an intersection of the first Vcom-Flicker curve and the second Vcom-Flicker curve, in which the common voltage at the intersection is the actual option common voltage.

A display device includes a substrate, first electrodes, lines, pixel electrodes, a display functional layer, a common electrode, second electrodes, and a controller. The first electrodes are opposed to the second electrodes with a space therebetween, and an insulating layer is provided between the common electrode and the first and second electrodes. During the display periods, in response to a control signal from the controller, the pixel electrodes are supplied with a pixel signal through the lines, and the common electrode is supplied with a common signal. During the sensing period, in response to the control signal from the controller, the lines are supplied with a first drive signal to generate a magnetic field. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between themselves and the second electrodes in response to the control signal from the controller, synchronously or asynchronously with the display periods.

The disclosure provides a voltage adjustment method and a voltage adjustment device for a display panel, and a display device. The method includes: detecting whether an absolute value of a difference between a first gray scale data of a first sub pixel and a second gray scale data of a second sub pixel in a static picture area is larger than a preset gray scale threshold; if so, acquiring the first gray scale data; and inputting a target data voltage to the data line according to the first gray scale data, to adjust an original pixel voltage to the first sub pixel into a target pixel voltage and to cause an absolute value of a difference between a first voltage difference in the positive frame and a second voltage difference in the negative frame to be smaller than a preset voltage difference threshold.

An interface circuit comprises a timing signal generating unit that generates a timing signal indicating a timing to switch between a data input period and a non-input period, a plurality of driver error detection circuits that detects an error in source drivers, a selector circuit that selects one of the driver error detection circuits in the non-input period and that outputs a driver error detection signal indicating an error detection result, an input error detection circuit that detects an input error of a data signal and outputs an input error detection signal indicating the result, an OR circuit that outputs an OR of the driver error detection signal and the input error detection signal, and a signal output unit connected to an output part of the OR circuit.

A method for compensating for a difference between positive and negative polarities of a display panel is provided. The display panel is electrically connected to a source driver, and the source driver includes first and second output drivers alternately connected to a same data line in the display panel. The method may include: detecting positive and negative polarity effective voltages of the display panel; adjusting a driver setting of at least one of the first and second output drivers based on the positive and negative polarity effective voltages, to change magnitudes of the positive and/or negative polarity effective voltages; and when the positive and negative polarity effective voltages relative to a common mode voltage are same in absolute value, obtaining an adjusted driver setting and applying the adjusted driver setting to the at least one of the first and second output drivers.

A gamma reference voltage generator includes a first resistor string, black voltage setters, a selector, and a second resistor string. The first resistor string receives a first reference voltage and a second reference voltage. The black voltage setters extract a plurality of black candidate voltages from the first resistor string. The selector selects one of the black candidate voltages as a black gamma voltage based on a selection signal. The second resistor string receives a first voltage corresponding to one of the black candidate voltages and a second voltage extracted from the first resistor string. In addition, the gamma reference voltage generator includes gamma voltage setters that extract a plurality of gamma voltages from the second resistor string.

A display device can include a display panel having a plurality of pixels disposed on a substrate, and a power supplier configured to supply a driving voltage to the display panel. The power supplier can include a first converter configured to receive an input voltage supplied from an external system and convert the input voltage into a boost voltage, a second converter configured to convert the boost voltage into the driving voltage, a first feedback unit configured to output a first pulse width modulation (PWM) signal to the first converter so that the boost voltage is proportional to a first reference voltage, and a second feedback unit configured to output a second PWM signal to the second converter so that the driving voltage is proportional to a second reference voltage.

The present disclosure provides an apparatus and method for controlling a display module, and a display device. The apparatus for controlling the display module includes a voltage sampling circuit and a data processing circuit. The voltage sampling circuit may acquire a data voltage and a common voltage and transmit the acquired data voltage and common voltage to the data processing circuit. The data processing circuit may determine, based on the data voltage and the common voltage, whether liquid crystal molecules are deflected abnormally, and control a main control circuit to restart if the liquid crystal molecules are deflected abnormally.

According to one embodiment of the present disclosure, there is provided a DC-DC converter including a slope compensation circuit configured to generate a sawtooth-shaped compensation ramp wave to output a slope voltage, a current sensing circuit configured to receive and convert a sensing current to output the converted current, and an adder configured to receive the slope voltage and the sensing current, wherein the adder includes a sensing resistor and a sensing switch, one end of the sensing resistor is connected to the current sensing circuit and the other end of the sensing resistor is connected to the sensing switch and the slope compensation circuit, and one end of the sensing switch is connected to the sensing resistor and the slope compensation circuit and the other end of the sensing switch is connected to the ground.