Abstract: A display device includes: a display unit including a plurality of pixels to display an image; a first power supply to generate a first power voltage; a second power supply to generate a second power voltage; and a signal controller to control the first power supply to supply the first power voltage to the display unit in response to at least one control signal associated with luminance of the image, and to control the second power supply to stop supplying the second power voltage after the first power voltage starts to be supplied.

Abstract: A display device includes: a display unit including a plurality of pixels to display an image; a first power supply to generate a first power voltage; a second power supply to generate a second power voltage; and a signal controller to control the first power supply to supply the first power voltage to the display unit in response to at least one control signal associated with luminance of the image, and to control the second power supply to stop supplying the second power voltage after the first power voltage starts to be supplied.

Abstract: A display device includes: organic light emitting diodes configured to emit light depending on grayscales constituting a target frame; a power voltage supplier configured to supply a power voltage to one electrode of each of the organic light emitting diodes; and a power voltage determiner configured to: extract target grayscales in descending order from a highest grayscale among the grayscales; and determine a voltage value of the power voltage based on each number of the target grayscales.

Abstract: A display device includes: organic light emitting diodes configured to emit light depending on grayscales constituting a target frame; a power voltage supplier configured to supply a power voltage to one electrode of each of the organic light emitting diodes; and a power voltage determiner configured to: extract target grayscales in descending order from a highest grayscale among the grayscales; and determine a voltage value of the power voltage based on each number of the target grayscales.

Abstract: A timing controller, OLED display having the same and method of for driving the display are disclosed. The timing controller includes a failure mode determiner that can receive an input signal and determine whether the OLED display is in a failure mode based on the input signal. The timing controller also includes a failure mode generator configured to store a fail signal, output the fail signal in the failure mode, and selectively output a multiplexed signal including one of the input signal or the fail signal based on whether the OLED display is in the failure mode. The timing controller further includes a failure mode controller configured to receive the multiplexed signal from the failure mode generator, store the multiplexed signal, and selectively output the multiplexed signal of a current frame or the multiplexed signal of a previous frame based on whether the OLED display is in the failure mode.

Abstract: A timing controller, OLED display having the same and method of for driving the display are disclosed. The timing controller includes a failure mode determiner that can receive an input signal and determine whether the OLED display is in a failure mode based on the input signal. The timing controller also includes a failure mode generator configured to store a fail signal, output the fail signal in the failure mode, and selectively output a multiplexed signal including one of the input signal or the fail signal based on whether the OLED display is in the failure mode. The timing controller further includes a failure mode controller configured to receive the multiplexed signal from the failure mode generator, store the multiplexed signal, and selectively output the multiplexed signal of a current frame or the multiplexed signal of a previous frame based on whether the OLED display is in the failure mode.

Abstract: An organic light emitting display and a driving method thereof, which can effectively detect degradation information of pixels in a display. An organic light emitting display includes a pixel unit and a degradation detector. The pixel unit has a plurality of pixels positioned at intersection portions of scan lines and data lines. The degradation detector divides the pixel unit into a plurality of first blocks each including a plurality of pixels, and detects degradation information for each second block including a plurality of first blocks. In the degradation detector, the second blocks are divided so that each second block shares one or more first blocks with another second block adjacent thereto.

Abstract: A timing controller for a display includes a receiver, a calculator, a storage device, and a generator. The receiver receives data and a data enable input signal. The calculator calculates a length of an input frame based on the data enable input signal. The storage device stores information indicative of the length of the input frame. The generator generates a data enable output signal having a predetermined number of pulses based on the stored length information. The pulses of the data enable output signal are distributed in a substantially uniform manner within an output frame, the data is output synchronized with the data enable output signal.

Abstract: In a display apparatus, a display panel is divided into dimming areas and a backlight device includes light source blocks providing light to the dimming areas. Average gray-scale values and maximum gray-scale values respectively corresponding to the dimming areas are generated based on image signals provided to the dimming areas. Whether the average gray-scale values and the maximum gray-scale values are respectively within first and second reference ranges are checked. One of at least two parameters is selected according to a checked result, and representative brightness values respectively corresponding to the dimming areas are determined using the selected parameter. Duty ratios of the light source blocks are controlled based on the representative brightness values. As a result, power consumption is reduced when applying a dimming device to the display apparatus.

Abstract: A method of driving a light source unit of a liquid crystal display panel according to an exemplary embodiment of the present disclosure includes the steps of calculating average and maximum values of image signals applied to the liquid crystal panel; calculating a representative value of the image signals using the average and maximum values; determining the luminance of the light source unit according to the representative value and driving the light source unit accordingly. The representative value may be calculated from Lrep=(1??)×Lavg+?×Lmax, where Lrep is a representative value, Lavg is an average value, Lmax is the maximum value, and ? is a value that decreases as a difference between the maximum and average image signal values increases, and has a range between 0 and 1.

Abstract: An organic light emitting display and a driving method thereof, which can effectively detect degradation information of pixels in a display. An organic light emitting display includes a pixel unit and a degradation detector. The pixel unit has a plurality of pixels positioned at intersection portions of scan lines and data lines. The degradation detector divides the pixel unit into a plurality of first blocks each including a plurality of pixels, and detects degradation information for each second block including a plurality of first blocks. In the degradation detector, the second blocks are divided so that each second block shares one or more first blocks with another second block adjacent thereto.

Abstract: A data processing method compensates a color of input data for a present frame of a display panel of a display apparatus to generate color compensating data. Dimming levels of a plurality of light emitting blocks included in a light source module for the display panel are determined using the color compensating data. Compensating data of the present frame is generated using the color compensating data and compensating coefficient data including the dimming levels.

Abstract: A method of driving a display panel determines luminance coefficients of a plurality of light emitting blocks included in a light source module using a Gaussian function. A pixel luminance is determined using the luminance coefficient and dimming levels of the light emitting block. The pixel luminance is a luminance of light provided to each pixel of the display panel. Input data compensated using the pixel luminance to generate compensated data. The pixel luminance provided to the pixels is calculated by considering the luminance change due to the adjacent light emitting blocks. Thus, the luminance of the input data is accurately displayed.

Abstract: A method of driving a light source comprises gradually decreasing a luminance of a light emitted from an upper light emitting module disposed along a first side of a display panel during a frame where the first side corresponds to a start point of a scanning direction; and gradually increasing a luminance of a light emitted from a lower light emitting module disposed along a second side of the display panel during the frame where the second side corresponds to an end point of the scanning direction.

Abstract: A driving method of a liquid crystal display is provided for improving an echo phenomenon in the screen and improving crosstalk in a 3D display device. The liquid crystal display includes a liquid crystal panel and a light source unit divided into a plurality of blocks and that irradiates light by a light source unit of the corresponding block being driven at a response time of liquid crystals of the liquid crystal panel. Data of a liquid crystal panel corresponding to the plurality of blocks is analyzed to determine an n-th block corresponding to a portion having the highest visibility. Driving periods of light source units of the n-th block, an (n?1)-th block, and an (n+1)-th block are synchronized.

Abstract: A data processing method compensates a color of input data for a present frame of a display panel of a display apparatus to generate color compensating data. Dimming levels of a plurality of light emitting blocks included in a light source module for the display panel are determined using the color compensating data. Compensating data of the present frame is generated using the color compensating data and compensating coefficient data including the dimming levels.

Abstract: A method of driving a light source unit of a liquid crystal display panel according to an exemplary embodiment of the present disclosure includes the steps of calculating average and maximum values of image signals applied to the liquid crystal panel; calculating a representative value of the image signals using the average and maximum values; determining the luminance of the light source unit according to the representative value and driving the light source unit accordingly. The representative value may be calculated from Lrep?(1??)×Lavg+?×Lmax, where Lrep is a representative value, Lavg is an average value, Lmax is the maximum value, and ? is a value that decreases as a difference between the maximum and average image signal values increases, and has a range between 0 and 1.

Abstract: In a display apparatus, a display panel is divided into dimming areas and a backlight device includes light source blocks providing light to the dimming areas. Average gray-scale values and maximum gray-scale values respectively corresponding to the dimming areas are generated based on image signals provided to the dimming areas. Whether the average gray-scale values and the maximum gray-scale values are respectively within first and second reference ranges are checked. One of at least two parameters is selected according to a checked result, and representative brightness values respectively corresponding to the dimming areas are determined using the selected parameter. Duty ratios of the light source blocks are controlled based on the representative brightness values. As a result, power consumption is reduced when applying a dimming device to the display apparatus.