Shenzhen China Star Optoelectronics Technology Co., Ltd.

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

Shen-sian Syu

Ming-Jong Jou

Jian He

Yufeng Jin

Yugang Bao

Hao Li

Ronggang Wang

Lin Li

Yufan Deng

Ching-hong Lai

Chih Hao Wu

A display panel and a display are provided. The display panel includes a glass substrate, at least one driving chip and a flexible printed circuit, wherein the at least one driving chip is electrically connected to the flexible printed circuit. Both the at least one driving chip and the flexible printed circuit are arranged on the glass substrate together to reduce the thickness of the display.

Display panel and display

A method of potential regulation of display panel, a potential regulation system and a storage apparatus are provided. The method comprising: obtaining a display bias value &#x394;Vof the display panel; calculating an outputting voltage value V=V+&#x394;Vwhich currently needs according a currently inputting voltage value Vand the display bias value &#x394;V; determining whether the currently inputting voltage value Vis in regulation range of the potential regulator; if yes, controlling the potential regulator to output correspondingly regulation voltage value according to the outputting voltage value V; if no, regulating the regulation range of the potential regulator according to the outputting voltage value V. Therefore, it could efficiency improve the problem of potential deviation in the display panel.

Method of potential regulation of display panel, potential regulation system and storage apparatus

A pixel driving circuit, a driving method thereof and an OLED display panel are provided. A plurality of scanning lines and a plurality of data lines of the pixel driving circuit intersect to define a plurality of pixel units, the plurality of pixel units in each row are connected to a corresponding scanning line and a corresponding power line, the plurality of pixel units in each column are connected to a corresponding data line, in a scanning period, scanning signal is input to an end of the scanning line to drive the plurality of pixel units along a first direction, power driving signal is input to an end of the power line opposite to the end of the scanning line to which the scanning signal is input to drive the plurality of pixel units along a second direction, the first direction and the second direction are opposite.

Pixel driving circuit, driving method thereof and OLED display panel

A compensation table compressing method is provided, processes each encoding block by prediction modes and select one prediction mode with the minimum rate distortion optimizing value as an optimized prediction mode by the rate distortion optimizing method such that each encoding block can correspond to an optimized prediction mode, which lowers the compression ratio of the compensation table and the time complexity of encoding and increases the quality of compression.

Compensation table compressing method

An image local contrast enhancement method includes: obtaining a first block where a pixel is located and a second block adjacent to the first block, and a gray scale source of a third block; obtaining a source gray scale of a fourth block opposite to the first block; respectively calculating a linear interpolation value according to the source gray scale and a distance between the pixel and the first block, the second block, the third block, and the fourth block; calculating a nonlinear interpolation value of the linear interpolation value by a nonlinear function; performing weighted calculation on the nonlinear interpolation value to obtain a target gray scale. The disclosure increases the diagonal blocks in the local gray scale adjustment, reflects the diagonal direction of the image, enhances the display effect of the local contrast in the smoothing process, enhances the edge image display effect, and improves the user experience.

Image local contrast enhancement method

A method and a device for compensating brightness of an AMOLED display panel are provided. The method is simple, and the device is simple in structure and is easy to operate. By performing an aging experiment on the display panel in advance, an attenuation law that the brightness of sub-pixels varies with time and gray levels is obtained, and a compensation data is computed and a dynamic compensation table is generated. A correcting module corrects the inputted original gray levels based on the dynamic compensation table and the brightness of sub-pixels are compensated such that the display panel can display images normally.

Method and device for compensating brightness of AMOLED display panel

A compensation circuit and an Organic Light Emitting Diode (OLED) device are disclosed. The compensation circuit includes a driver switch for driving a load, a reset energy storage element coupled to a to-be-reset terminal of the driver switch; and a reset charging circuit coupled to the reset energy storage element. During when the driver switch is reset, the reset charging circuit sequentially outputs a fast charging signal and a reset initialization signal to the reset energy storage element; the fast charging signal is for fast charging the reset energy storage element. The reset initialization signal is for adjusting the voltage output from the reset energy storage element to the driver switch's to-be-reset terminal to a preset voltage. Through the above design, the reset energy storage element may be fast charged with reduced charging time during the Reset stage, enhancing the Reset efficiency.

Compensation circuit and organic light emitting diode display device

The invention discloses an offset method and equipment of a RGBW panel subpixel. The method includes: inputting data of pixels based on RGB color space in an image; determining the most similar pixels of each of the pixels in the image according to the data of the pixels based on RGB color space; when the resolution of pixels is the same, converting the data of the pixels based on RGB color space to data of the pixels based on RGBW color space, determining data based on RGBW color space corresponding to the most similar pixels of the pixels; three fourths subsampling the pixels in the image according to the data of the pixels based on RGBW color space, the data based on RGBW color space corresponding to the most similar pixels of each of the pixels; outputting data of pixels in the image after being sampled.

Offset method and equipment of RGBW panel subpixel

A method of self-adaptive conversion for images includes: calculating the degree of color saturation of each pixel of an RGB image and original grey value of each primary color component, and calculating a global gain value; calculating a total gain value of each pixel based on the global gain value and the partial gain value of each pixel; enhancing luminance of the white color component of each primary color component of each pixel based on the total gain value of each pixel, so to output an RGBW image. The present invention improves deviated color saturation to ensure display quality while elevating the display luminance when a conversion from an RGB image into an RGBW image.

Method of self-adaptive conversion for images

An adjusting method of display parameter and a liquid crystal display (LCD) system are provided. The adjusting method includes: obtaining a first luminance value and a second luminance value when a LCD panel displaying a minimum grayscale image and a maximum grayscale image respectively; based on the first luminance value, the second luminance value and a standard Gamma curve of the LCD panel, obtaining each target luminance value conforming to the standard Gamma curve and corresponding to each grayscale; based on the target luminance value of each grayscale and a relationship between grayscale voltage and luminance obtained in advance, obtaining a target grayscale voltage of each grayscale; and adjusting a grayscale voltage of each grayscale to be the target grayscale voltage of the grayscale to thereby achieve Gamma adjustment. By the above method, automatic adjustment of display parameter for the LCD panel can be achieved.

Adjusting method of display parameter and liquid crystal display system

The present disclosure provides a method and a device for adjusting a Gamma curve of TFT-LCD. The method comprises steps of: capturing grayscale images of the TFT-LCD to be tested which are displayed under a series of specific grayscale voltages; calculating grayscale information corresponding to the images according to the captured grayscale images, so as to obtain a Gamma curve; determining an uneven area in the Gamma curve based on the grayscale information corresponding to two adjacent grayscale voltages; calculating depth of the uneven area; and adjusting amplitude of any one or both of the two adjacent grayscale voltages based on the depth so that the Gamma curve between the two adjacent grayscale voltages is even. The present disclosure can improve the Gamma curve, thus eliminating the display color cast or the brightness abnormity.

Gamma curve adjusting method and adjusting device for TFT-LCD to address problems caused by uneven gamma curve

A liquid crystal display panel and a grayscale voltage compensating method thereof are provided. The compensating method includes: obtaining an actual voltage distribution of a common voltage on a common electrode; and compensating positive polarity grayscale voltages as well as negative polarity grayscale voltages of respective pixel electrodes according to the actual voltage distribution to make that: for a same grayscale value, a difference value between the compensated positive polarity grayscale voltage of each pixel electrode and the common voltage on an opposing position of the pixel electrode on the common electrode is equal to a difference value between the compensated negative polarity grayscale voltage of the pixel electrode and the common voltage on the opposing position. By the above method, the invention can eliminate the flicker phenomenon when the liquid crystal display panel is displaying and therefore the display effect is improved.

Liquid crystal display panel and grayscale voltage compensating method thereof

An adjustment circuit for measuring an optical parameter is disclosed. The adjustment circuit includes an optical sensing module for detecting an optical signal and converting the detected optical signal into a voltage signal; an amplification module for amplifying the voltage signal; an A/D conversion module for converting the amplified voltage signal into a digital signal; a control module for analyzing the digital signal for generating an analyzed result; a signal generating module for outputting a frequency square wave signal according to the analyzed result; and an adjustment module for adjusting an amplification factor of the amplification module according to the frequency square wave signal. The circuit of the present disclosure is easy, and an automatic measurement can be implemented.

Adjustment circuit and method for measuring optical parameter and optical measurement system

The present invention provides an array substrate, a display apparatus and a driving method thereof. The array substrate comprises: an active area, comprising a plurality of display pixel units; a source driver, being located outside the active area and providing drive signals to the display pixel units; a gamma voltage generating circuit, providing a gamma reference voltage to the source driver, and the gamma voltage generating circuit is inputted with a PWM signal from the pulse generating circuit TCon and obtains the gamma reference voltage for outputting the gamma reference voltage to the source driver according to the PWM signal. Compared with the programmable control chip, the cost is diminished; compared with the resistance divider, the adjustment is convenient.

Array substrate, display apparatus and driving method thereof

An auto-zero circuit of an operational amplifier is disclosed, and the auto-zero circuit has: a micro-control unit and a digital potentiometer; the micro-control unit is used to obtain a voltage value of an offset voltage of the output end when there is no input in the operational amplifier, and generates a control signal which causes the voltage value of the offset voltage to be smaller than a first threshold value according to the voltage value of the offset voltage; the digital potentiometer is used to adjust a resistance thereof according to the control signal.

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Guangdong, China

Shen-sian Syu