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 apparatus includes a display panel, a data driver and a driving controller. The display panel includes a plurality of display blocks. The data driver is configured to output data voltages to the display panel. The driving controller is configured to control the data driver. The driving controller is configured to calculate differences between loads of a previous frame and loads of a present frame for the display blocks for each colors, to determine whether an image is a static image or not based on the differences between the loads of the previous frame and the loads of the present frame for the display blocks for the each colors, and to reduce luminance of the image when the image is determined as the static image.

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: 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 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 apparatus includes a display panel, a data driver and a driving controller. The display panel includes a plurality of display blocks. The data driver is configured to output data voltages to the display panel. The driving controller is configured to control the data driver. The driving controller is configured to calculate differences between loads of a previous frame and loads of a present frame for the display blocks for each colors, to determine whether an image is a static image or not based on the differences between the loads of the previous frame and the loads of the present frame for the display blocks for the each colors, and to reduce luminance of the image when the image is determined as the static image.

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 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: 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 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: 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: An isolated flyback converter for an LED driver may include: (1) A snubber circuit configured to be connected to the primary side of a transformer. (2) A switching unit configured to have a source terminal and a drain terminal and configured to be turned on or off. (3) A control unit configured to detect a first input signal proportional to a fluctuation in the power supply voltage, detect a second input signal when the switching unit is turned off, generate a signal inversely proportional to the maximum value of the first input signal and multiply the generated signal to the second input signal, and control a peak current of the switching unit to be proportional to the multiplication result of the signal inversely proportional to the maximum value of the first input signal and the second input signal such that a secondary-side current of the transformer is maintained constant.

Abstract: An isolated flyback converter for an LED driver may include: (1) A snubber circuit configured to be connected to the primary side of a transformer. (2) A switching unit configured to have a source terminal and a drain terminal and configured to be turned on or off. (3) A control unit configured to detect a first input signal proportional to a fluctuation in the power supply voltage, detect a second input signal when the switching unit is turned off, generate a signal inversely proportional to the maximum value of the first input signal and multiply the generated signal to the second input signal, and control a peak current of the switching unit to be proportional to the multiplication result of the signal inversely proportional to the maximum value of the first input signal and the second input signal such that a secondary-side current of the transformer is maintained constant.