Shenzhen China Star Optoelectronics Technology Co., Ltd.

Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.

Tai-jiun Hwang

Jing Xu

Zhenling Wang

Yuchao Zeng

Limin Wang

Pengfei Liang

Ping-sheng Kuo

The disclosure discloses a voltage compensation method, a compensation circuit, and a display device of OLED. The OLED voltage compensation method includes detecting and acquiring a brightness value of each pixel of the OLED display panel; converting the brightness value into a voltage code according to a Gamma curve; and acquiring compensation data according to the driving voltage code, and compensating the driving voltage code according to the compensation data to drive the OLED display panel to display according to the compensated driving voltage code. In this way, the accuracy of the OLED voltage compensation can be improved, and the display effect of the OLED display panel can be improved.

Voltage compensation method, compensation circuit, and display apparatus of OLED

Provided are a display control method, a display control device, a storage medium and a terminal of autostereoscopic three-dimensional (3D) image. The method includes the following steps: capturing distance information of a background object relative to a screen; capturing depth information of display content of the screen; determining a relative positional relation between the background object and the depth based on the distance information and the depth information; and causing the depth to move toward a side of the front of the screen when the background object is located on a side of the depth facing a front of the screen, thereby causing the background object to be located on a side of the depth facing a back of the screen.

Display control method, display control device, storage medium and terminal of autostereoscopic three-dimensional (3D) image

A scan driver and a driving method of scan driver are provided. The scan driver includes a first shift register and a second shift register respectively receiving a first clock signal and a second clock signal, a first initial pulse signal and a second initial pulse signal and according to a first scanning type or a second scanning type scans scan lines; a selection unit receiving selection signals to select the first shift register or the second shift register for scanning scan lines; a logic control unit receiving an output enable sign controls the outputting; a level shift unit outputting a level signal; an output amplifier amplifying the level signal and outputting to the scan lines. Therefore, it achieves to satisfy requirement of progressive scanning and non-sequential scanning.

Scan driver and a driving method of scan driver

The present invention discloses an image processing method and apparatus. The method comprises the steps of: counting the number of pixels distributing in different brightness values in the target image; determining an initial central brightness value that maximum numbers of pixels have and determining an average brightness value of the target image; and adjusting a quantity distribution of the pixels in the target image at different brightness values, so as to make a new central brightness values that maximum number of pixels have closer to the average brightness value than the initial central brightness value, and to expand a range of pixel brightness values having preset brightness thresholds in which the new central brightness value is included. The present invention discloses an image processing method and apparatus, which enlarges the range around the central brightness value and adjusts the brightness distribution of the image to enhance the details of the image.

Image processing method and apparatus

An AMOLED display panel includes data lines, scanning lines, a plurality of pixel units surrounded by the data lines and the scanning lines, a plurality of first driving circuits correspondingly arranged in pixel units arranged on predetermined positions, a plurality of second driving circuits arranged in the pixel units on another positions, and a temperature adjustment circuit. An input terminal of the temperature adjustment circuit is connected to the first pixel driving circuits, and an output terminal of the temperature adjustment circuit is connected to the data lines.

AMOLED display panel with function of temperature compensation and display device thereof

The disclosure discloses an AMOLED driving circuit and a display device. The driving circuit includes a pixel circuit, a digital driving circuit, and a detection circuit. The pixel circuit includes a data cable and a first switch element. The data cable and the first switch element are coupled. The digital driving circuit is coupled with the data cable, configured to provide a digital voltage signal to the pixel circuit by the data cable. The detection circuit is coupled with the data cable, configured to receive and output the current fed back from the data cable and flowing through the first switch element. The current is configured to compensate a threshold voltage of the first switch element. According to the manner above, embodiments provided by the disclosure can enhance the display effect of the AMOLED.

AMOLED driving circuit and AMOLED display device

A method of reducing the power consumption of the display panels includes: obtaining a brightness of each of pixels of an image to be displayed on the display panel; calculating an average brightness of the image in accordance with the brightness of each of the pixels of the image; obtaining a brightness adjustment coefficient in accordance with the average brightness; decreasing the brightness of each of the pixels of the image in accordance with the brightness adjustment coefficient; and enhancing a contrastness between the pixels of the image in accordance with the brightness adjustment coefficient. In addition, a system of reducing the power consumption of the display panels is also disclosed. In this way, the power consumption of the display panel may be reduced, and the contrastness of the displayed image may be enhanced.

Methods and systems of reducing power consumption of display panels

The present invention discloses a display panel and the driving method thereof. It divides the pixel electrodes of the display panel into multiple groups according to the light color allowed passing through. That is, each said pixel electrode allows the light with the same color to pass through; during one frame display, the data driver applies independent Gamma voltage to each said pixel electrode. After the gate driver drives the gate line connected with a group of the pixel electrodes, it drives the gate line connected with next group of the pixel electrodes in sequence, so that it can independently adjust the Gamma voltage applied to the pixels with different colors.

Display panel and liquid the driving method thereof

A temperature compensation circuit and method for a display panel and a display panel are provided. The display panel includes a control circuit, a driving circuit, a detection circuit and a pixel circuit; wherein the detection circuit is configured to obtain a current threshold voltage of a transistor of the pixel circuit, the control circuit obtains a current voltage difference between the current threshold voltage and an initial threshold voltage, obtains a current compensation gain matching the current voltage difference according to a predetermined related data of a voltage difference and a compensation gain, and controls the driving circuit to drive the pixel circuit by using the current compensation gain. By practice of the disclosure, the temperature compensation for a display panel could be achieved without the additional temperature sensor, so the service life of the display panel could be extended.

Temperature compensation circuit and method for a display panel and display panel

A video signal conditioner of a display device is provided. The video signal conditioner includes: a signal receiving module, for receiving an externally input video signal; a luminance conversion module, for converting the externally input video signal to brightness; an average luminance acquiring module, for acquiring an average luminance of a Nth row of pixels when a Mth frame image is displayed; a luminance adjustment parameter calculation module, for calculating a luminance adjustment parameter of the Nth row of pixels when the Mth frame image is displayed; a video signal adjustment parameter calculation module, for calculating a video signal adjustment parameter of the Nth row of pixels when the Mth frame image is displayed; an output module, for outputting the adjusted video signal corresponding to the Nth line of pixels when the Mth frame image is displayed.

Video signal conditioner of display device and video signal adjustment method thereof

An OLED data compensation circuit and method, and an OLED display device are disclosed. The OLED data compensation circuit includes: a sensing circuit for detecting a drifting amount of a threshold voltage of thin film transistors (TFTs); a timing controller connected with the sensing circuit for receiving the drifting amount, and outputting voltage control signals and source driving signals, which controlling a voltage of data signals outputted by a source driver; a reference voltage output circuit connected with the timing controller, is configured for outputting a first reference voltage in accordance with the voltage control signals, the voltage of the data signals and the first reference voltage are configured for compensating the drifting amount of the threshold voltage of the driving TFTs to compensate data of the OLED. In this way, the OLED data compensation is not limited only by the source driver, the OLED data compensation may be enhanced.

Organic light-emitting OLED data compensation circuits and methods and the OLED display devices thereof

A method for controlling brightness of an OLED panel when booting. The method includes steps of: obtaining a brightness to be displayed corresponding to each pixel in a booting process; comparing the brightness to be displayed of each pixel with a preset brightness threshold; if the brightness to be displayed is greater than the brightness threshold, adjusting the brightness to be displayed to be less than or equal to the brightness threshold; using the brightness to be displayed after adjusting to adjust a grayscale value to be displayed of the pixel; using the grayscale value to be displayed to control a corresponding pixel to perform a display; gradually increasing the brightness threshold with time, and returning to the step of obtaining a brightness to be displayed corresponding to each pixel in a booting process. The present invention can reduce the probability of the image sticking and the speed of ageing.

Method for controlling brightness of an organic light-emitting diode panel when booting

The present disclosure provides a method for displaying image and apparatus thereof, the method includes: When a first image in power saving mode needs to be switched to a second image, determining a difference of average picture level between the first image and the second image; according to a relationship between a preset difference of average picture level and a first time, determining the first time, and the first time is a time restoring a first brightness to a second brightness needed, the first brightness is a brightness of the first image in power saving mode, and the second brightness is a normal brightness of the second image; switching from the first image to the second image, and the brightness of the second image is gradually restored in the first time to the normal brightness. In this way, the human eye cannot bring discomfort and enhance the panel viewing comfort.

Method for displaying image and apparatus thereof

A method for driving a display device includes: dividing static frames displayed by the display device into a first frame and a second frame, which comprises a first sub-frame and a second sub-frame; outputting grey-scale images during the display period of the first frame and the first sub-frame; outputting dark state images during the display period of the second sub-frame, where the length of the display period of the second sub-frame is proportional to that of the static frames. The present invention also proposes a display device using the method. The brightness of the display device can be dynamically adjusted, preventing the device from operating in high brightness for a long period of time, and prolonging its lifespan.

Display device and method for driving display device

The disclosure is related to a naked eye three-dimensional display panel and an overdriving method. The overdriving method comprises: obtaining target voltages and overdriving voltages of driving electrodes; searching overdriving periods corresponding to the target voltages and the driving voltages in a preset look-up table, wherein mapping relations for different values of the target voltages, the overdriving voltages and the overdriving periods are stored in the preset look-up table; generating overdriving signals according to the obtained target voltages, the obtained driving voltages and the searched overdriving periods; and driving the liquid crystal prism. The disclosure can avoid the issues of insufficient overdriving and excessive overdriving and the naked eye three-dimensional displaying effect using the overdriving technology can be assured.

Growing community of inventors

Guangdong, China

Tai-jiun Hwang