A method of and a display control device for emulating OLED degradation for an OLED display panel are proposed, where the OLED display panel includes pixels, and each of the pixels includes subpixels. The method includes the following steps. A current image signal is received. A driving signal level for each of the subpixels is determined based on the current image signal. An actual surface temperature of each of the subpixels is estimated based on the corresponding driving signal level. An accumulated stress of each of the subpixels is computed based on the corresponding driving signal level, the corresponding actual surface temperature, and at least one previous image signal prior to the current image signal. A degradation map that emulates OLED degradation of the OLED display panel is generated based on the accumulated stress of each of the subpixels.

A image sticking compensating device according to example embodiments includes a degradation calculator configured to calculate a degradation weight based on input image data, and to calculate degradation data of a frame, an accumulator configured to accumulate the degradation data, and to generate age data using the accumulated degradation data, and a compensator configured to determine a grayscale compensation value corresponding to the age data and an input grayscale of the input image data, and to output age compensation data by applying the grayscale compensation value to the input image data.

A display apparatus include a display panel and a display panel driver. The display panel includes a panel block. The display panel driver senses a driving current to generate a sensing current, generates a temperature weight of the panel block based on the sensing current and location information of a circuit component, generates a load value of the panel block based on input image data, and generates a predicted temperature of the panel block based on the temperature weight of the panel block and the load value of the panel block.

A touch screen controller, a touch screen driving circuit and a touch screen system are provided. The touch screen driving circuit configured to drive a touch screen includes an analog driving circuit configured to provide driving signals to a display panel and a touch panel of the touch screen, and generate a touch sensing value based on a touch sensing signal from the touch panel; a display noise table (DNT) comprising display noise information indicating display noise that varies according to a driving state of the touch screen and image data; a feature extractor configured to extract a plurality of feature values from the driving state and the image data; and a touch processor configured to read a display noise value mapped to the plurality of feature values from the DNT, subtract the display noise value from the touch sensing value and generate a touch value.

A display device includes a display panel including a plurality of pixels, a gate driver configured to provide gate signals to the plurality of pixels, a data driver configured to provide data signals to the plurality of pixels, a correction data memory configured to store mura correction data, and a controller configured to control the gate driver and the data driver. The controller includes a pattern detection block configured to detect a set pattern in input image data, and a mura correction block configured to perform a mura correction operation that corrects the input image data based on the mura correction data in response to the set pattern not being detected, and to not perform the mura correction operation in accordance with the set pattern being detected.

A image sticking compensating device according to example embodiments includes a degradation calculator configured to calculate a degradation weight based on input image data, and to calculate degradation data of a frame, an accumulator configured to accumulate the degradation data, and to generate age data using the accumulated degradation data, and a compensator configured to determine a grayscale compensation value corresponding to the age data and an input grayscale of the input image data, and to output age compensation data by applying the grayscale compensation value to the input image data.

A display device includes a display panel, a luminance compensator, and a data driver. The display panel includes a plurality of pixels. The luminance compensator is configured to calculate a scaling factor based on a target current, a black image current, and a sensing current. The target current is calculated based on an input current input to the display panel. The sensing current is measured from the display panel. The data driver is configured to generate a data voltage based on input image data to supply the data voltage to the pixels. The data voltage has a voltage level adjusted based on the scaling factor.

According to an aspect of the present disclosure, a display device includes a display panel in which a plurality of pixels including a first sub pixel, a second sub pixel, a third sub pixel, and a fourth sub pixel each having a different color is disposed; a data driver configured to supply a data voltage to the plurality of pixels by using a plurality of data lines; and a gate driver configured to supply a gate signal to the plurality of pixels by using a plurality of gate lines, where each of the plurality of data lines is divided into a plurality of sub data lines and each of the plurality of sub data lines is connected to a plurality of sub pixels having the same color, thereby minimizing data transition of a data voltage.

A display apparatus includes a display panel, a driving controller and a data driver. The driving controller is configured to predict a panel temperature according to a position in the display panel based on input image data, to calculate a block current of a display block of the display panel and a panel resistance according to the position in the display panel based on the panel temperature, to calculate a voltage drop according to the position in the display panel based on the block current and the panel resistance and to compensate the input image data based on the voltage drop to generate a data signal. The data driver is configured to convert the data signal to a data voltage and to output the data voltage to the display panel.

Systems, methods, and devices are provided to selectively perform a frame replay at various stages of an image processing pipeline for an electronic display. Image processing circuitry may include first compensation circuitry that compensates for a first compensation factor relating to a first physical parameter of an electronic display and second compensation circuitry that compensates for a second compensation factor relating to a second physical parameter of the electronic display. A first tap point that enables the image frame to be stored and reused may be located between the first compensation circuitry and the second compensation circuitry, while a second tap point may be located after the second compensation circuitry.