Boe Technology Group Co., Ltd.

Hefei Boe Optoelectronics Technology Co., Ltd.

Jiacheng Huang

Jian He

Xia Feng

Qing Yang

Xiaofei Peng

Meng Zhang

Donghui Wang

Liangliang Zheng

Gang Zhang

Tingting Jin

Shengfei Ma

Lingling Liu

Yunyun Zhang

Qiang Zhu

Tingfei Wang

A timing controller includes: a field programmable gate array configured to generate a reference clock signal, and obtain at least one group of clock signals according to the reference clock signal. Each group of clock signals includes at least two clock signals, and a waveform of each clock signal is same as a waveform of the reference clock signal, and active levels in different clock signals are provided with a delay of a preset duration. The reference clock signal includes a first clock sub-signal for first duration and a second clock sub-signal for a second duration. At least one output interface group is connected to the field programmable gate array. Each output interface group includes at least two output interfaces, and each of the at least two output interfaces is configured to output one clock signal of a group of clock signals corresponding to the output interface group.

Timing controller, display apparatus and display control method thereof

A display device and a display driving method thereof are disclosed. The method includes: acquiring a grayscale of each pixel in a pixel matrix of a to-be-output image of the display device, wherein the pixel matrix comprises a plurality of pixels in a plurality of pixel rows, and each pixel row comprises multiple pixels; determining a refresh type and a refresh rate for the to-be-output image according to the grayscale of each pixel in the pixel matrix, wherein the refresh type comprises a single-frequency refresh and a multi-frequency refresh; and refreshing pixel voltages of the pixel matrix at a single determined refresh rate under the single-frequency refresh, or refreshing the pixel voltages of the pixel matrix at a plurality of determined refresh rates under the multi-frequency refresh.

Display device and display driving method thereof

The disclosure discloses an absorption circuit which is coupled to a switching power supply, wherein the absorption circuit comprises: a switching power supply voltage spike suppression circuit for changing a voltage spike of the switching power supply into a desired voltage spike, an energy storage circuit which is coupled to the switching power supply voltage spike suppression circuit and used for storing the spike voltage that is suppressed, and a release circuit which is coupled to the energy storage circuit and used for, when the voltage stored by the energy storage circuit is higher than the output voltage of the switching power supply, releasing the energy which is stored by the energy storage circuit and higher than the output voltage to the output terminal of the switching power supply. The disclosure further discloses a corresponding switching power supply and a liquid crystal display driving circuit.

Circuit and switching power supply and liquid crystal display driving circuit

The present invention provides a display panel and a driving method thereof, as well as a liquid crystal display device, which relates to the field of liquid crystal display technology, and can reduce the power consumption of the display panel. The display panel comprises a source driver, a plurality of pixel units defined by a plurality of gate lines and a plurality of data lines arranged crossly, and a common voltage output driver, the common voltage output driver is used for, at a Nth frame, inputting a negative common voltage to a first pixel unit, and at an adjacent frame of the Nth frame, inputting a positive common voltage to the first pixel unit, the first pixel unit is one of the plurality of pixel units, N is a positive integer; the source driver is used for, when the common voltage output driver inputs the negative common voltage to the first pixel unit, inputting a data voltage greater than or equal to the negative common voltage to the first pixel unit, and, when the common voltage output driver inputs the positive common voltage to the first pixel unit, inputting a data voltage less than or equal to the positive common voltage to the first pixel unit. The display panel can be applied in a liquid crystal display device.

Display panel having adjustable common voltage and method of driving the same

The present disclosure provides a soft-start power supply circuit, a method for controlling the same, and a display device. The soft-start power supply circuit includes: a soft-start circuitry configured to pull up a potential of a feedback voltage terminal to a potential of an input voltage terminal during a first phase of an operating cycle and to pull down the potential of the feedback voltage terminal to a potential of a ground terminal during a second phase of the operating cycle; a feedback operation circuitry configured to control a driving circuitry to be turned off during the first phase and control the driving circuitry to be turned on and off alternately during the second phase; a driving circuitry configured to, in an on state, output a signal of the input voltage terminal after rectifying and filtering by a rectifying and filtering circuitry to an output voltage terminal.

Soft-start power supply circuit, method for controlling the same, and display device

The method for adjusting a gamma voltage comprises: applying a reference common electrode voltage and a to-be-adjusted gamma voltage to a display module; collecting first light intensity data when the display module displays a grayscale test pattern after the reference common electrode voltage and the to-be-adjusted gamma voltage are applied; plotting a testing gamma curve in accordance with the first light intensity data; when the testing gamma curve is not located within the acceptable range of the standard gamma curve, adjusting the to-be-adjusted gamma voltage currently applied to the display module, until the testing gamma curve is located within the acceptable range of the standard gamma curve; and when the testing gamma curve is located within the acceptable range of the standard gamma curve, determining the to-be-adjusted gamma voltage currently applied to the display module as a final gamma voltage.

Method and system for adjusting gamma voltage, and electronic device

There are provided a GOA circuit, an array substrate, a display device and a driving method. The GOA circuit includes clock signal input lines and more than two GOA units connected in cascade, wherein each of the GOA units includes a selection signal output sub-unit and a selection sub-unit; the selection signal output sub-unit is configured to receive a source signal, and output a selection signal in accordance with the source signal; the selection sub-unit receives the selection signal and N clock signals, and outputs the received signal in accordance with the selection signal; and the clock signal input lines are no less than a number of N, and are configured to input the clock signals to the selection sub-unit, where N is an integer number which is higher than or equal to two. The gate driving structure of the GOA circuit, the array substrate and the display device occupies a small area. The driving method can achieve a single dot polarity inversion.

GOA circuit, array substrate, display device and driving method

This invention provides a liquid crystal display panel, a source driver in the liquid crystal display panel comprises an amplifier whose amplification coefficient is adjustable, the amplifier can adjust a received data signal based on a currently selected amplification coefficient, and output the adjusted data signal to a data line that is currently signally-connected with the amplifier, moreover, the currently selected amplification coefficient is inversely proportional to a rate at which the data line charges a current signally-connected sub-pixel unit. For the case that the rate at which the data line charges the sub-pixel unit is relatively low, a relative large amplification coefficient can be selected, thereby nonuniform brightness of the display image caused by a low charging rate of the sub-pixel unit can be avoided; for the case that the rate at which the data line charges the sub-pixel unit is relatively high, a relatively small amplification coefficient is selected, thereby unnecessary power consumption can be saved. This invention further provides a display device comprising such a liquid crystal display panel and a driving method for use in such a liquid crystal display panel.

Driving method of a liquid crystal display panel, a liquid crystal display panel and a display device

A gate driver () and a display device, which relate to the technical field of display, and are applicable to the design and manufacture of display devices. The gate driver () comprises: a power-off voltage detection circuit () and a power-off de-ghosting function circuit () connected to the power-off voltage detection circuit (), wherein the power-off voltage detection circuit () is used for detecting a current voltage state, and outputting a control signal to the power-off de-ghosting function circuit () according to the voltage state, so that the power-off de-ghosting function circuit () outputs a signal to eliminate power-off ghosting according to the control signal. The gate driver () integrates the power-off voltage detection circuit () and the power-off de-ghosting function circuit (); the integration level is high, and the display device can eliminate the power-off ghosting without the need to match the selected type of the gate driver () and a printed circuit board.

Growing community of inventors

Beijing, China

Jiacheng Huang