A display device includes a display panel, a data driving circuit, and a timing controller, wherein the display panel includes a plurality of gate lines to which a scan signal is applied, a plurality of data lines to which a data voltage is applied, a plurality of reference voltage lines to which a reference voltage is applied, and a plurality of subpixels, wherein the data driving circuit senses a voltage on one reference voltage line selected from the plurality of reference voltage lines in a first detecting period and a second detecting period having different voltage detecting paths, and wherein the timing controller controls the data driving circuit, and determining whether or not the reference voltage line is abnormal using a sensing voltage detected from the reference voltage line.

A dynamic shading system is disclosed. The system comprises a screen and a control system. The screen comprises a plurality of light valves. Each light valve has an adjustable translucency so that the screen can present an image on one side of the screen. The control system is configured to determine what image is to be presented on the one side of the screen in dependence of light intensity incident on another side of the screen. the control system is further configured to control each light valve of the screen to have a translucency so that the plurality of the light valves forms the determined image on the one side of the screen.

A liquid crystal display (LCD) and a driving method thereof are disclosed. The LCD includes: an LCD panel, a grayscale voltage output portion and a grayscale voltage adjusting portion. The LCD panel includes a deformation area formed by bonding of a driver integrated circuit, and the deformation area includes a first subpixel. The grayscale voltage output portion is configured to output a first grayscale voltage to the first subpixel. The grayscale voltage adjusting portion is configured to adjust the first grayscale voltage into a second grayscale voltage, so that a brightness of the first subpixel at the second grayscale voltage is less than a brightness of the first subpixel at the first grayscale voltage.

Techniques are described for portable computing devices and other apparatus that include an ambient light sensor. The techniques can be particularly advantageous for situations in which the ambient light sensor is disposed behind a display screen of a host device such that ambient light detected by the sensor passes through the light emitting display before being detected by the sensor.

A color shift compensation method, a color shift compensation system and a display panel are provided. The color shift compensation method includes: accumulating actual display time of a display panel; determining whether or not the actual display time reaches a preset cumulative display time threshold; and in a case where the actual display time reaches the preset cumulative display time threshold, driving the display panel to display according to compensated adjustment voltages that are pre-stored, and in a case where the actual display time does not reach the preset cumulative display time threshold, driving the display panel to display according to current adjustment voltages that are pre-stored.

A voltage-programmed display system allows measurement of effects on pixels in a panel that includes both active pixels and reference pixels coupled to a supply line and a programming line. The reference pixels are controlled so that they are not subject to substantial changes due to aging and operating conditions over time. A readout circuit is coupled to the active pixels and the reference pixels for reading at least one of current, voltage or charge from the pixels when they are supplied with known input signals. The readout circuit is subject to changes due to aging and operating conditions over time, but the readout values from the reference pixels are used to adjust the readout values from the active pixels to compensate for the unwanted effects.

A visual perception device has a look-up table stored in a laser driver chip. The look-up table includes relational gain data to compensate for brighter areas of a laser pattern wherein pixels are located more closely than areas where the pixels are further apart and to compensate for differences in intensity of individual pixels when the intensities of pixels are altered due to design characteristics of an eye piece.

A light module driving method for a illumination device, wherein the illumination device includes a driving unit, a transformation unit, a compensation and calibration unit and a light module, and the driving unit is configured to output a light driving signal according to a source, wherein the transformation unit is coupled to the driving unit and the light module, and the light driving signal is configured to drive a plurality of lighting zones corresponding to a light-emitting diode (LED) module of the light module, wherein the light module driving method includes transforming, by the transformation unit, the light driving signal into a plurality of modulated light driving signals according to the compensation and calibration unit to drive each lighting zone corresponding to the LED module.

An overdrive method includes: performing loss compression to an input image to generate image data, and storing the image data into a memory; reading the image data from the memory and decoding the image data to obtain a previous image; obtaining a current image, calculating a difference between a current grey level at a location of the current image and a previous grey level of the previous image at the location; calculating a gain according to the difference and a threshold; calculating an overdrive grey level according to the current grey level and the previous grey level; and mixing the overdrive grey level and the current grey level based on the gain to generate an output grey level to replace the current grey level.

A display device includes a silicon wafer including digital circuits, a micro-light emitting diode (micro-LED) wafer including an array of micro-LEDs, and an indium-gallium-zinc-oxide (IGZO) layer between the silicon wafer and the micro-LED wafer and including analog circuits. The digital circuits are characterized by a first operating supply voltage and are configured to generate digital control signals based on digital display data of an image frame. The analog circuits are characterized by a second operating supply voltage higher than the first operating supply voltage. The analog circuits includes analog storage devices configured to storing analog signals, and transistors controlled by the digital control signals and the analog signals to generate drive currents for driving the array of micro-LEDs. The digital circuits on the silicon wafer or the analog circuits in the IGZO layer include level-shifting circuits at interfaces between the digital circuits and the analog circuits.