Hkc Corporation Limited

Chongqing Hkc Optoelectronics Technology Co., Ltd.

Mancheng Zhou

Haijiang Yuan

Baohong Kang

Rongrong Li

Yuanping Zhang

Haoxuan Zheng

Shuang Hong Wang

Hao Tang

Zhi Xiong

Xinghan Liu

Junfeng Xie

Peng Ren

A manufacturing method includes: providing a substrate; forming, in a display area of the substrate, a plurality of lines of scan lines, a plurality of rows of data lines and a plurality of display assemblies; forming, at the periphery of the display area, a sense line including a first sensing section connected to each of the scan lines, a switch assembly and a second sensing section connected in sequence and connected to each of the data lines; inputting a shut-off signal to a control terminal of the switch assembly; inputting a scanning signal to each of the scan lines through the first sensing section and inputting a data signal to each of the data lines through the second sensing section; and disconnecting the scan lines from the first sensing section and disconnecting the data lines from the second sensing section when confirming that each display assemblies is lighted up.

Manufacturing method for display panel, display panel and display device

A method includes steps of: obtaining a grayscale value of each sub-pixel in each minimum detection unit respectively; and exiting a picture detection function if at least one of the x minimum detection units meets a first preset condition corresponding to the at least one of the x minimum detection units when the picture detection function for a preset detection area is in an enabled state. A first preset condition corresponding to a first minimum detection unit is that the grayscale value of at least one sub-pixel of a first type is smaller than or equal to a first value, or alternatively, the grayscale value of at least one sub-pixel of a second type is greater than or equal to a second value.

Method and device for picture detection on a preset detection area of a display panel, display panel, and computer-readable storage medium

An electronic ink screen and a driving method thereof are disclosed. The driving method includes: in an image of a current page, sequentially receiving by each pixel a first reset voltage and an image voltage; in an image of a next page, sequentially receiving by each pixel a second reset voltage and an image voltage of the next page. The first reset voltage is used to reset the grayscale of the pixel from an original grayscale to a black grayscale. The image voltages are used to raise the grayscale of the pixel from a white grayscale or black grayscale to a target grayscale. Then the pixel displays according to the image voltage.

Electronic ink screen and driving method thereof

A driving circuit for a display panel, a display device, and a driving method are provided. The driving circuit includes a common voltage feedback line and N common voltage detection units. The N common voltage detection units are electrically connected to N common voltage collection points of a common electrode of the display panel in one-to-one correspondence. Each common voltage detection unit includes a switch module and a logic circuit. The switch module has a first connection end electrically connected to a common voltage collection point corresponding to the common voltage detection unit and a second connection end is electrically connected to the common voltage feedback line. N logic circuits sequentially output control signals to corresponding switch modules, and control N switch modules to sequentially turn on, to make the N common voltage collection points sequentially output N common voltages through the turned-on switch modules and common voltage feedback line.

Liquid crystal display (LCD) driving circuit compensating gray-scale loss due to attenuation of common voltage

A voltage compensation circuit, voltage compensation method, and display device, in which the voltage compensation circuit is applicable to the pixel unit of the 2T1C structure; during the voltage sensing period, the changed data signal is adjusted and output to the pixel unit, and the data signal is sensed at the turning-on moment of the second transistor of the pixel unit, and the threshold voltage is determined according to the voltage value of the data signal at the turning-on moment; and during the voltage compensation period, the voltage value of the compensated data signal is determined according to the threshold voltage value and output to the corresponding pixel unit; sensing of the threshold of the second transistor is realized, and there is no need to arrange T, sensor line or control signal line, the structure of the display panel is simplified and the design cost is reduced.

Voltage compensation circuit, voltage compensation method and display device

A liquid crystal display panel drive method including: determining a target pixel in a picture of a (k+1)-th frame according to a grayscale data of the (k+1)-th frame; acquiring a number difference between positive polarities and negative polarities in polarities of data drive signals of target pixels in a same row in the picture of the (k+1)-th frame; adjusting, a polarity of a data drive signal of a target pixel of the target row in the (k+1)-th frame data drive signal, and making an absolute value of the number difference corresponding to the target row to be less than or equal to the preset number; and driving the liquid crystal display panel to display the picture of the (k+1)-th frame based on the (k+1)-th frame data drive signal after being adjusted.

Liquid crystal display panel drive method and liquid crystal display panel drive device, liquid crystal display apparatus, and non-transitory computer-readable storage medium

A driving method of a display device and a display device are disclosed. The display device includes multiple scan lines, multiple data lines, and multiple LED lights driven by the multiple scan lines and data lines. The multiple LED lights are arranged in multiple rows and columns. An anode of each LED is connected to the respective scan line. A cathode of each LED is connected to the respective data line. The driving method includes: obtaining a compensated display grayscale corresponding to an LED in an instant row based on a display grayscale of an LED in the previous row, a display grayscale of the LED in the instant row, and a display grayscale compensation table; obtaining corresponding driving parameters according to the compensated display grayscale corresponding to the LED in the instant row; and controlling the LED in the instant row to display according to the driving parameters.

Driving circuit, driving method, and display device

A driving method and a driving device of a display panel, and a display device are provided. The driving method includes: receiving a video signal transmitted by an external processor; transmitting a first scanning signal to a current row of pixels in response to a first gray-scale value of each of the current row of pixels of the display panel corresponding to the video signal being greater than a preset gray-scale value; transmitting a second scanning signal to a next row of pixels of the display panel; and transmitting, based on the first gray-scale value, a data signal to the display panel and driving the display panel to display the video signal.

Driving method for generating a scanning signal with pulse width modulation based on gray-scale value, driving device of display panel, and display device

An electrophoretic display device and a method for electrophoretic display refreshing are provided in the disclosure. The electrophoretic display device includes a display screen, a driving circuit, a driving control circuit, and a processor. The display screen includes multiple pixel units. The driving circuit is configured to generate multiple first data-voltage signals at a first time and multiple second data-voltage signals at a second time. The processor is configured to obtain and compare one of the multiple first data-voltage signals and one of the multiple second data-voltage signals that both are to be received by a same pixel unit of the multiple pixel units, to obtain a comparison result, and the processor is configured to control, according to the comparison result, the driving circuit and the driving control circuit to drive the pixel unit to work.

Electrophoretic display device and method for electrophoretic display refreshing

A pixel array and a display panel are provided in the disclosure. The pixel array includes multiple scan lines, multiple emission lines, multiple data lines, and multiple pixel units, where the multiple data lines are insulated from the plurality of scan lines and the multiple emission lines, each of the multiple pixel units includes a first pixel sub-unit, a second pixel sub-unit, and a third pixel sub-unit, second pixel sub-units and/or third pixel sub-units in the same row are electrically coupled with the same scan line and the same emission line and first pixel sub-units in the same row are electrically coupled with another scan line and another emission line, and first pixel sub-units, and/or third pixel sub-units, and/or second pixel sub-units in the same column are electrically coupled with the same data line.

Pixel array and display panel

An array substrate includes a plurality of TFT switches arranged in an array and a scan driver circuit. In each row of TFT switches, a plurality of TFT switches form a first group of switches, and the rest of the TFT switches form a second group of switches. The scan driver circuit outputs first and second scan signals for each row of the TFT switches. The first group of switches receives the first scan signal, and the second group of switches receives the second scan signal. When a static image is displayed, the first scan signal or the second scan signal is an off signal to turn off the first or second group of switches.

Array substrate, control method thereof, and display panel

An electronic ink screen and a control method therefor and a control device therefor. The control method for the electronic ink screen includes: in a preset time period, ensuring that a difference between the number of times of positive voltage refresh processes corresponding to a target capsule and the number of times of negative voltage refresh processes corresponding to the target capsule is less than or equal to a preset difference threshold. Each of the positive voltage refresh processes includes: increasing an amplitude of a control voltage signal to a preset maximum positive voltage value, and then reducing the amplitude of the control voltage signal. Each of the negative voltage refresh processes includes: reducing the amplitude of the control voltage signal to a preset maximum negative voltage value, and then increasing the amplitude of the control voltage signal.

Electronic ink screen and control method therefor and control device therefor

A method and a device for removing afterimage, and a display panel. The method includes the image displayed on the display panel is first monitored to determine a target area of the image, and the target area is an area where a color does not change in the image; the background color in the target area is determined; the pixel data in the target area is traversed to determine a block in an image displayed in the target area; and finally, the target pixel in the block based on the background color is determined, and the color of the target pixel is switched according to a preset time interval.

Method and device for removing afterimage, and display panel

A gamma voltage generator, a display device, and a driving method of a display panel. The gamma voltage generator includes a control module, a data storage module, a digital-to-analog conversion module, and an output module which are electrically connected in sequence. The data storage module includes at least a first data memory and a second data memory. The first memory is configured to store and output a first digital signal to enable the output module to output a first gamma voltage in a first operating phase of the display panel. The second memory is configured to store and output a second digital signal to enable the output module to output a second gamma voltage in a second operating phase of the display panel. The first operating phase and a second operating phase are divided in accordance with a chronological order.

Gamma voltage generator, display device, and driving method of display panel

A display panel includes a plurality of sub-pixels, where each sub-pixel is correspondingly provided with a drive circuit. The drive circuit includes a light emitting assembly and a storage capacitor. The power-on method of the display panel includes: acquiring a power-on signal, and generating a first initialization instruction, a second initialization instruction and a display instruction according to the power-on signal; initializing the storage capacitor according to the first initialization instruction; initializing the light emitting assembly according to the second initialization instruction after initializing the storage capacitor, and at least providing preset gray-scale voltages for the light emitting assembly, so as to perform a preheating startup on the light emitting assembly; and controlling the light emitting assembly to display normally according to the display instruction after initializing the light emitting assembly.

Growing community of inventors

Chongqing, China

Mancheng Zhou