An electronic device includes a display screen, a display control circuit, an active optical component, and an optical control circuit. The active optical component is located below the display screen. The display control circuit is configured to control refreshing of the display screen, and output a synchronization signal to the optical control circuit. The optical control circuit is configured to receive the synchronization signal, and control the active optical component to start light emission after a predetermined first delay that is after a moment corresponding to the synchronization signal to enable the display control circuit to refresh to one row of at least one row on the display screen corresponding to the active optical component after a predetermined second delay that is after the active optical component completes light emission.

Disclosed is a digital signage device and a method for operating the same, the digital signage device enabling a terminal, which has approached a display panel, to acquire tagging information, which has been updated with regard to each display object inside contents displayed on the display panel.

A display comprises a plurality of autonomous pixels on a substrate. Each autonomous pixel comprises a display element, a sensing element and a control element. The sensing element is arranged to detect an external stimulus and the control element is arranged to generate, entirely within the autonomous pixel, a control signal to drive the display element based, at least in part, on a magnitude of the external stimulus detected by the sensing element. Additionally, the control element comprises one or more groups of transistors, each group comprising two or more transistors arranged to perform the same function and connected in parallel with each other.

A display device is disclosed. The display device may include a display panel, a light blocking member, a distance sensing member, and a controlling member. The display panel may include a pixel region and a transmission region. The light blocking member may be disposed on a rear surface of the display panel and have an adjustable light transmittance. The distance sensing member may sense a viewing distance between a viewer and the display device. The controlling member may calculate a proper viewing distance range, may compare the viewing distance with the proper viewing distance range to generate a comparison result, and may adjust the light transmittance of the light blocking member based on the comparison result.

Systems and methods for signal communication over an optical link are described. One aspect includes receiving a source CONFIG1 signal from a DP master device and a sink CONFIG1 signal from a sink terminal. The source and sink CONFIG1 signals are analyzed. It is determined whether a signal transmission mode is a DP protocol. For a DP protocol, a pair of source AUX signals is received from the DP master device. A pair of sink AUX signals is received from the sink terminal. Communication resource contention between the source and sink AUX signals is identified. A communication direction of the communication resources is transitioned to give the source AUX signals precedence over the sink AUX signals. The source AUX signals are transferred to the sink terminal via the communication resources. The direction of the communication resources is again transitioned. The sink AUX signals are transferred to the DP master device.

An OLED display capable of visible light communication and a visible light communication system having same are disclosed. The OLED display comprises an OLED display unit, a data memory unit, and an OLED control unit. The OLED display unit emits an image which is outwardly displayed and additional information which is included in the image. The data memory unit is storing image data corresponding to the image and additional data corresponding to the additional information. The OLED control unit controls the OLED display unit to display the image by using the image data provided by the data memory unit and controls the flicker of the image within a range which cannot be perceived by human eyes so that the additional information is included in the image by using the additional data provided by the data memory unit. As described above, the OLED display displays not only a general image but also additional information included in the image and thus can perform an image display function together with a reception function in visible light communication.

A display panel and a driving method thereof, a drive device, and a drive system. The display panel includes a plurality of data lines, a plurality of gate lines, and a pixel array. The pixel array includes a communication pixel including a communication sub-pixel; the first communication gate line of the plurality of gate lines connected to the communication sub-pixel is configured to transmit a first scan signal which includes a display scan sub-signal and a first communication scan sub-signal, the first communication data line of the plurality of data lines connected to the communication sub-pixel is configured to transmit a first data signal which includes a first display data sub-signal and a first communication data sub-signal; and the communication sub-pixel is configured to display information corresponding to the first display data sub-signal and information corresponding to the first communication data sub-signal in a time-sharing manner.

An LED display apparatus, wherein the LED display apparatus includes a substrate having a first active area, a first LED element disposed in the first active area and a driving circuit electrically connects to the first LED element to drive the first LED element generating a continuous pulsed light having a first wave length range within a displaying time interval, wherein the first continuous pulsed light has a plurality of first light intensities and a plurality of second light intensities. The plurality of first light intensities are respectively corresponding to a first holding time interval and the plurality of second light intensities are corresponding to s a second holding time interval, at least one of the plurality of second light intensities is greater than at least one of the plurality of first light intensities, and the second holding time interval is less than the first holding time interval.

A multi-vision device can include a first display set configured to display a first split image of an entire image of content according to a progressive scanning method; a second display set disposed on a lower side of the first display set to display a second split image of the entire image; and a control unit configured to scan the second split image on the second display set according to a reverse-progressive scanning method, invert the scanned second split image vertically and display the inverted second split image on the second display set.

A display panel, a display module and a display method thereof, and a display device are provided. The display module includes a backlight module and a display panel. A driving circuit and a photosensor are provided on the display panel, and the photosensor is electrically connected with the driving circuit. When the backlight module receives a backlight control signal, the backlight module emits light based on a light emission frequency indicated by the backlight control signal, and the backlight control signal is converted from a display signal output from a host. The photosensor detects an optical signal generated by the backlight module, converts the optical signal into an electric signal, and transmits the electric signal to the driving circuit, such that the driving circuit drives the display panel to display an image.