Abstract: Disclosed is a display device, which includes a display panel that displays an image, and a controller that receives image data corresponding to a frame and drives the display panel. The controller divides the image data into a plurality of blocks and determines whether the image is a fixed image based on an inter-frame variation of a block of the plurality of blocks. The controller changes an afterimage prevention operation mode when the number of blocks displaying the fixed image for a period equal to or greater than a first reference value among the plurality of blocks is equal to or greater than a second reference value.

Abstract: A display device includes: a display panel; and a display panel driver to generate a data signal based on input image data, and generate a data voltage based on the data signal to provide the data voltage to the display panel. The display panel driver is further to: select compensation data from among first to K-th compensation data having different resolutions from each other, where K is a positive integer of 2 or more, the compensation data corresponding to an input resolution of the input image data; compensate for the input image data to generate the data signal by using the compensation data corresponding to the input resolution; accumulate the input image data to generate intermediate accumulated stress data; and change a resolution of the intermediate accumulated stress data to a reference resolution to generate accumulated stress data.

Abstract: A display device includes a display panel, a controller, and a data driver. The display panel includes a plurality of pixels. The controller receives image data including data representing a logo, detects a logo region including the logo in the image data, determines a correction gain based on a quotient of a second gray level of a peripheral region adjacent to the logo region and a first gray level of the logo region, and generates corrected image data by correcting the image data based on the correction gain. The data driver provides data signals to the plurality of pixels based on the corrected image data.

Abstract: A display device includes a display panel divided into panel blocks including pixels, and a display panel driver which drives the display panel, sets a time point to which a set time elapses from a time point when input image data is determined to be a still image as an operation time point, decreases a luminance gain from the operation time point, determines the set time based on accumulated deterioration amounts of the panel blocks, and applies the luminance gain to the input image data.

Abstract: A display apparatus includes a display panel and a display panel driver. The display panel driver drives the display panel. The display panel driver determines at least one selected from a first low luminance pattern and a second low luminance pattern, where the first lower luminance pattern includes a first low luminance area at a first end portion of the display panel in a vertical direction and a second low luminance area at a second end portion of the display panel in the vertical direction, and the second low luminance pattern includes a third low luminance area at a first end portion of the display panel in a horizontal direction and a fourth low luminance area at a second end portion of the display panel in the horizontal direction. The display panel driver determines a compensation area including a boundary between a low luminance area and a normal area.

Abstract: A display device includes a driving controller which generates output image data based on input image data, a data driver which generates data voltages based on the output image data, and a display panel which displays an image based on the data voltages. The driving controller may generate a plurality of edge values in a first direction for a plurality of blocks based on a plurality of luminance values for the plurality of blocks that are dividing the display panel, determine a boundary area in the first direction based on a continuity of edge blocks in a second direction crossing the first direction, the edge blocks being determined based on the plurality of edge values, and generate the output image data based on the input image data and compensation data for decreasing a luminance of the image corresponding to the boundary area.

Abstract: A display device including: a display panel including a route region located in the display region; and a drive controller configured to generate image data such that a reference point of the image is shifted along a shift route, the route region includes a center point, first to fourth points, and first to fourth sides, the shift route includes a first route that includes: a first sub-route along which the reference point moves from the center point to the first point; a second sub-route along which the reference point moves from the first point to the third point; a third sub-route along which the reference point moves from the third point to the second point; a fourth sub-route along which the reference point moves from the second point to the fourth point; and a fifth sub-route along which the reference point moves from the fourth point to an end point.

Abstract: A display device includes: a display panel including a plurality of pixels, and a panel driver configured to drive the display panel based on input image data. The panel driver determines whether a fixed image is displayed in an outermost region of the display panel based on the input image data, and decreases a luminance of the outermost region when that the fixed image is displayed in the outermost region is determined.

Abstract: A display device includes a display panel and a display image shift controller. The display panel includes a display area in which a display image is displayed and a shift area located within the display area. The display image shift controller generates a route shift signal, where a reference point of the display image is shifted in the shift area based on the route shift signal. The route shift signal includes first and second routes corresponding to a path through which the reference point of the display image is shifted. The first route includes a first sub-route and a second sub-route. The second route includes a third sub-route and a fourth sub-route. The first, second, third, and fourth sub-routes are different from each other.

Abstract: Disclosed is a display device, which includes a display panel that displays an image, and a controller that receives image data corresponding to a frame and drives the display panel. The controller divides the image data into a plurality of blocks and determines whether the image is a fixed image based on an inter-frame variation of a block of the plurality of blocks. The controller changes an afterimage prevention operation mode when the number of blocks displaying the fixed image for a period equal to or greater than a first reference value among the plurality of blocks is equal to or greater than a second reference value.

Abstract: A display device including a display panel to display an image, a panel driver to drive the display panel, and a controller to control a driving of the panel driver. The controller includes a first circuit to receive frame data during an active period in synchronization with a vertical synchronization signal determining a start time point of a frame having the active period and a variable blank period, to shift a position of the frame data in response to a shift start signal to generate shift data, and to provide the shift data to the panel driver. A number of active periods of the vertical synchronization signal included in one period of the shift start signal differs from the number of active periods of the vertical synchronization signal included in another period of the shift start signal.

Abstract: A display apparatus includes a display panel, a data driver, a driving controller and a power voltage generator. The display panel displays an image. The data driver outputs a data voltage to the display panel. The driving controller controls an operation of the data driver. The power voltage generator outputs a power voltage of the display panel. The data driver outputs a clock recovery signal representing whether a clock recovery operation is normal or abnormal to the driving controller. The driving controller generates an overcurrent signal representing an overcurrent based on the clock recovery signal and outputs the overcurrent signal to the power voltage generator.

Abstract: A display device includes a display panel and a display image shift controller. The display panel includes a display area in which a display image is displayed and a shift area located within the display area. The display image shift controller generates a route shift signal, where a reference point of the display image is shifted in the shift area based on the route shift signal. The route shift signal includes first and second routes corresponding to a path through which the reference point of the display image is shifted. The first route includes a first sub-route and a second sub-route. The second route includes a third sub-route and a fourth sub-route. The first, second, third, and fourth sub-routes are different from each other.

Abstract: A display device includes a display panel which includes a compensation area, an image processing device, a timing controller which includes an average luminance decrease rate calculator which calculates an average luminance decrease rate, a luminance decrease rate calculator which calculates a luminance decrease rate for the compensation area, and a data compensator which generates output image data by applying the luminance decrease rate for the compensation area to the input image data, and a data driver which provides data voltages generated based on the output image data to the display panel.

Abstract: A display device includes a display panel which includes a compensation area, an image processing device, a timing controller which includes an average luminance decrease rate calculator which calculates an average luminance decrease rate, a luminance decrease rate calculator which calculates a luminance decrease rate for the compensation area, and a data compensator which generates output image data by applying the luminance decrease rate for the compensation area to the input image data, and a data driver which provides data voltages generated based on the output image data to the display panel.

Abstract: A display device includes a display panel divided into panel blocks including pixels, and a display panel driver which drives the display panel, sets a time point to which a set time elapses from a time point when input image data is determined to be a still image as an operation time point, decreases a luminance gain from the operation time point, determines the set time based on accumulated deterioration amounts of the panel blocks, and applies the luminance gain to the input image data.

Abstract: A display device is disclosed that includes a display panel, a controller, and a data driver. The controller is configured to determine first luminances with respect to a reference grayscale in a second frame when the reference grayscale is displayed in the second frame after the reference grayscale is displayed in a first frame. The controller is configured to determine second luminances with respect to the reference grayscale in the second frame when the reference grayscale is displayed in the second frame after a minimum grayscale is displayed in the first frame. The controller is further configured to temporally and spatially arrange first data corresponding to the reference grayscale and second data corresponding to the minimum grayscale to generate a data signal. And, the controller is configured to drive the display panel with a digital driving method in a first grayscale section, and drive the display panel with an analog driving method in a second grayscale section.

Abstract: A display device is disclosed that includes a display panel, a controller, and a data driver. The controller is configured to determine first luminances with respect to a reference grayscale in a second frame when the reference grayscale is displayed in the second frame after the reference grayscale is displayed in a first frame. The controller is configured to determine second luminances with respect to the reference grayscale in the second frame when the reference grayscale is displayed in the second frame after a minimum grayscale is displayed in the first frame. The controller is further configured to temporally and spatially arrange first data corresponding to the reference grayscale and second data corresponding to the minimum grayscale to generate a data signal. And, the controller is configured to drive the display panel with a digital driving method in a first grayscale section, and drive the display panel with an analog driving method in a second grayscale section.

Abstract: A display device includes: a display panel including a plurality of pixels connected to a plurality of scan lines and a plurality of data lines, respectively; a scan driver, which provides a scan signal to the pixels through the scan lines; a data driver, which provides a data voltage to the pixels through the data lines; and a controller, which controls the scan driver and the data driver, and receives input image data at a variable input frame frequency. The controller determines whether a gray scale value of the input image data is included in any range of a first gray scale range and a second gray scale range different from the first gray scale range, and dithers the input image data when it is determined that the gray scale value of the input image data is included the first gray scale range.

Abstract: A display device includes a display panel including a correction area in which a correction image including a logo image and a logo background image is displayed, and a panel driving block. The panel driving block includes a luminance correction block which corrects a luminance of the correction image, and the luminance correction block includes a first correction block which divides the correction area into a plurality of sub-areas, based on a distance from the logo image and generates an area correction signal for correcting the luminance of the correction image, a second correction block which generates a luminance correction signal for correcting the luminance of the correction image displayed in each of the sub-areas, based on a grayscale of the image signal and the area correction signal, and a third correction block which corrects the luminance of the correction image.