Abstract: There are provided an array substrate and a display apparatus. The array substrate comprises a voltage driving circuit (1) for driving display pixels to display images, a current sensing circuit (2), and further comprises test pixels (3), a current comparison circuit (4), and a voltage compensation circuit (5), wherein the current sensing circuit (2) is connected to the test pixels (3) and the current comparison circuit (4), and the current comparison circuit (4) is connected to the voltage compensation circuit (5); the current comparison circuit (4) compares the current value of the current sensed by the current sensing circuit and flowing through the test pixels (3) with a set threshold, and outputs the comparison result to the voltage compensation circuit (5); and the voltage compensation circuit (5) compensates for the driving voltage of the voltage driving circuit (1) when the current value is smaller than the set threshold.

Abstract: A method, an apparatus and a system for display compensation relate to the field of display technique. The method for display compensation includes: measuring luminance of each of pixels in a full-color test picture outputted from a display apparatus in a uncompensated status when the display apparatus outputs the full-color test picture; obtaining a reference luminance value according to the measured luminance values of the respective pixels; obtaining compensation coefficients for the respective pixels according to the reference luminance value and the luminance values of the respective pixels; performing a compensation and correction on signals inputted to the respective pixels respectively according to the compensation coefficients. By utilizing the method, the issue of the non-uniformity of the display effect in the display apparatus can be addressed effectively.

Abstract: There are provided an array substrate and a display apparatus. The array substrate comprises a voltage driving circuit (1) for driving display pixels to display images, a current sensing circuit (2), and further comprises test pixels (3), a current comparison circuit (4), and a voltage compensation circuit (5), wherein the current sensing circuit (2) is connected to the test pixels (3) and the current comparison circuit (4), and the current comparison circuit (4) is connected to the voltage compensation circuit (5); the current comparison circuit (4) compares the current value of the current sensed by the current sensing circuit and flowing through the test pixels (3) with a set threshold, and outputs the comparison result to the voltage compensation circuit (5); and the voltage compensation circuit (5) compensates for the driving voltage of the voltage driving circuit (1) when the current value is smaller than the set threshold.

Abstract: A method, an apparatus and a system for display compensation relate to the field of display technique. The method for display compensation includes: measuring luminance of each of pixels in a full-color test picture outputted from a display apparatus in a uncompensated status when the display apparatus outputs the full-color test picture; obtaining a reference luminance value according to the measured luminance values of the respective pixels; obtaining compensation coefficients for the respective pixels according to the reference luminance value and the luminance values of the respective pixels; performing a compensation and correction on signals inputted to the respective pixels respectively according to the compensation coefficients. By utilizing the method, the issue of the non-uniformity of the display effect in the display apparatus can be addressed effectively.

Abstract: An electron emission display and a driving method thereof adjust a brightness differently according to a brightness of a frame in order to reduce power consumption and prevent a gradual failure from occurring, and easily recognize a change of the brightness. A pixel portion receives a data signal and a scan signal, and displays an image. A data driver generates the data signal using video data and transfers the data signal to the pixel portion. A scan driver transfers the scan signal to the pixel portion. A timing controller transfers a drive signal to drive the data driver and the scan driver, to the data driver and the scan driver. A data processor generates a control signal corresponding to frame data obtained by summing a value of video data inputted during one frame. A power supply section generates a drive voltage and transfers the drive voltage to the pixel portion, the data driver, the scan driver, the timing controller, and the data processor.

Abstract: An electron emission display and a driving method thereof, where a brightness is adjusted differently according to a brightness of a frame in order to reduce power consumption and prevent a brazing fire from occurring, and to easily recognize a change of the brightness.

Abstract: A driving apparatus, and a driving method for an electron emission display, includes a controller for comparing external video data input signals, switching a polarity control signal in a predetermined period on the basis of the comparison and controlling a video data output signal in accordance with the polarity control signal, and a data driver for modulating the video data signal output from the controller. The switching of the polarity control signal may be shifted temporally when the comparison indicates the video data input signals have the same gray level.

Abstract: A field emission display apparatus including a field emission display panel and a driving device for the field emission display panel. The driving device includes a power supply unit, the power supply unit including an abnormal current detection unit and a discharge circuit. The abnormal current detection unit generates an arc-current detection signal when the value of a current flowing between a negative anode voltage terminal of the field emission display panel and a common ground line is larger than an upper limit. The discharge circuit generates a short circuit between an anode plate of the field emission display panel and the negative anode voltage terminal when the arc-current detection signal is generated from the abnormal current detection unit.

Abstract: An EED capable of reducing noise influence between a high voltage element and a low voltage logic element in an EED panel includes: a high voltage ground for a high voltage element, a low voltage ground for a low voltage element, and a ferrite bead, connected between the high voltage ground and the low voltage ground, to block RF noise from the high voltage ground.

Abstract: An electron emission display adapted to reduce or prevent non-uniformity of brightness between pixels and distortion of the white balance. The electron emission display includes a display region, a data driver, and a compensation unit. The display region has a plurality of pixels, each pixel comprising a plurality of sub-pixels. The data driver is coupled to the display region, and is configured to generate a data signal for driving the pixels to display an image. The compensation unit receives brightness data and image data, compensates the image data for a pixel, and outputs compensated image data to the data driver. To this end, the compensation unit includes a first compensation coefficient estimator and a second compensation coefficient estimator. The first compensation coefficient estimator receives brightness data of respective sub-pixels and estimates a plurality of first compensation coefficients such that the sub-pixels would emit the same brightness in response to the same data.

Abstract: An electron emission display device may include a pixel unit configured to emit electrons from first electrodes in accordance with voltages applied to the first electrodes and second electrodes, a clock generator including first and second lookup tables storing pulse widths of clocks, the clock generator configured to select one of the first and second lookup tables in accordance with polarity signals and to output the clocks, a data driver configured to generate data signals from image signals and the clocks generated from the clock generator, and to transfer the data signals and the clocks to the first electrode, and a scan driver configured to generate scan signals and to transfer the scan signals to the second electrode.

Abstract: A field emission display apparatus including a field emission display panel and a driving device for the field emission display panel. The driving device includes a power supply unit, the power supply unit including an abnormal current detection unit and a discharge circuit. The abnormal current detection unit generates an arc-current detection signal when the value of a current flowing between a negative anode voltage terminal of the field emission display panel and a common ground line is larger than an upper limit. The discharge circuit generates a short circuit between an anode plate of the field emission display panel and the negative anode voltage terminal when the arc-current detection signal is generated from the abnormal current detection unit.

Abstract: An electron emission display device including: a pixel area for emitting electrons depending on voltage applied to a first electrode and a second electrode; a timing controller for outputting varying pulse widths clocks, the pulse widths of clocks being varied depending on gray scales of image signals. The display device also includes a data driver for generating data signals using the image signals and transferring them to the first electrode; a scan driver generating scan signals and transferring them to the second electrode; and a voltage controller for controlling the voltage of the second electrode depending on the sum of the image signals in one frame interval, wherein the data driver counts the number of the clock pulses to control the pulse widths of the data signals.

Abstract: Gamma correction for adjusting a white balance of an image may be performed and uniformity of an image being displayed may be improved by modulating a pulse width of a received video data signal. A driving apparatus for an electron emission device may include a controller for receiving an external video data signal and generating a plurality of clock signals based on the video data signal, and a data driver for receiving a corresponding one of the plurality of clock signals from the controller and modulating a pulse width of the received video data signal based on the corresponding clock signal.

Abstract: An EED capable of reducing noise influence between a high voltage element and a low voltage logic element in an EED panel includes: a high voltage ground for a high voltage element, a low voltage ground for a low voltage element, and a ferrite bead, connected between the high voltage ground and the low voltage ground, to block RF noise from the high voltage ground.