A display control device includes: a photodetection sensor configured to detect light from pixels of display screens with both a first display device and a second display device with a pixel size different from that of the first display device in a display system in which a video signal is displayed on a plurality of display devices adjacent to each other as detection targets; and a display adjustor configured to determine a degree of enlargement or reduction of video signals displayed on the display devices on the basis of a difference between the pixel size of the first display device and the pixel size of the second display device based on a result of detection from the photodetection sensor.

Display device including: a pixel matrix comprising a plurality of pixel groups, each group comprising a plurality of pixel blocks; a video card comprising an input configured to receive a digital signal to be displayed, and a plurality of outputs each coupled to a group by an associated primary data distribution network, the video card being configured to decode the digital signal and send to each of the outputs of digital data encoded in a format suitable for the matrix and intended to be displayed by the group coupled to said output; and wherein: each group includes a plurality of control circuits each associated with a block of the group and coupled to the associated main data bus; each pixel includes a driver circuit configured to generate pixel control signals.

A display device includes a plurality of first pixels and a plurality of second pixels. Each of the plurality of first pixels includes a first LED chip including a first anode and a first cathode, a second LED chip including a second anode and a second cathode, and a first transistor. One of source and drain electrodes of the first transistor is electrically connected to a first power supply voltage line. The other of the source and drain electrodes is electrically connected to the first anode and the second cathode. The first cathode and the second anode are electrically connected to a second power supply voltage line. A first potential of the first power supply voltage line is different to a second potential of the second power supply voltage line.

A display panel driving system includes: a display panel having a first panel partition and a second panel partition; a first display driving circuit operatively connected to the first panel partition and configured to drive the first panel partition; a second display driving circuit operatively connected to the second panel partition and configured to drive the second panel partition; and a comparison circuit respectively connected to the first and second display driving circuits; each display driving circuit is utilized to collect brightness level statistics associated with the display panel partitions it drives; each display driving circuit is configured to determine a cathode voltage value associated with the display panel partition it drives and transmit the cathode voltage value to the comparison circuit for comparison for each of the panel partitions and determine a target value which is then utilized to adjust the cathode voltage of the whole display panel.

A display device includes a display panel including a display region and a non-display region surrounding the display region, a plurality of a light-emitting units arranged at the display region; a touch circuit connected to the display panel, and configured to detect touch information when the display panel is touched; a control circuit connected to the touch circuit and the display panel, and configured to control a corresponding light-emitting unit to emit a predetermined light beam in response to the touch information; a photosensing circuit connected to the display panel and the control circuit, and configured to sense the predetermined light beam and convert it into an electric signal; and a data processor connected to the control circuit and the display panel, and configured to process the electric signal acquired by the photosensing circuit through conversion to acquire monitoring data, and display the monitoring data on the display panel.

An embodiment method of measuring ambient light comprises generating, by an ambient light sensor associated with a screen which alternates between first phases in which light is emitted and second phases in which no light is emitted by the screen, a first signal representative of an intensity of light received by the ambient light sensor during the first and second phases; comparing the first signal with a threshold intensity value; and controlling a timing of an ambient light measurement by the light sensor based on the comparison.

An image display system includes semiconductor light sources that output optical signals including modulated signal portions at timings different from each other, optical fiber cables that respectively transmit the optical signals, a light synthesizer that synthesizes the optical signals to output a synthesized optical signal, a light amount detector that detects an output light amount of the synthesized optical signal, a modulated signal detector that detects the modulated signal portions from the detected output light amount, an image modulator that modulates the synthesized optical signal according to an input image signal to output a modulated image light, and a light source controller that outputs drive control signals for respectively outputting the optical signals respectively including the modulated signal portions according to the image signal, and detects a failure of the optical fiber cables based on whether a modulated signal portion among the plurality of modulated signal portions is detected.

A display manufacturing system includes: a plurality of display devices, each including a display panel which displays an image; a driving voltage measurer which calculates a saturation voltage corresponding to a luminance of the image displayed on the display panel by changing a driving power voltage for driving the display panel; and a processor which calculates a current density and a degradation weight value based on the saturation voltage, and controls the display panel included in each of the plurality of display devices based on the current density and the degradation weight value.

The present disclosure provides a light emitting device and a display apparatus, The light emitting device includes a substrate, and a first electrode, a light emitting layer and a second electrode which are sequentially disposed on the substrate, an electrochromic substrate is disposed on the second electrode; the light emitting device further includes a chromaticity instrument, a processor, and a driver; the chromaticity instrument is configured to acquire chromaticity of light emitted by the light emitting device; the processor is configured to calculate compensated chromaticity for the light emitted by the light emitting device according to the chromaticity of the light emitted by the light emitting device acquired by the chromaticity instrument, and calculate an electrical signal according to the compensated chromaticity for the light emitted by the light emitting device.

A degradation compensator including a compensation factor determiner configured to determine a compensation factor based on a distance between adjacent sub-pixels, and a data compensator configured to apply the compensation factor to a stress compensation weight to generate compensation data for compensating image data.