A display device including pixels; a controller configured to generate first compensation data based on first sensing data with respect to threshold voltages of driving transistors of the pixels which are sensed during a first sensing period, to generate second compensation data based on second sensing data with respect to mobilities of the driving transistors of the pixels which are sensed during the first sensing period, to generate third compensation data based on third sensing data with respect to mobility change amounts of the driving transistors of the pixels which are sensed using image data for sensing compensated based on the first and second compensation data during a second sensing period, and to compensate input image data based on the first, second, and third compensation data to generate compensated image data; and a data driver configured to provide data voltages to the pixels based on the compensated image data.

A display device (10) and an image display method therefor, an image display system, and a storage medium, which relate to the technical field of display. A controller (101) of the display device (10) can adjust a gamma parameter when the temperature of a display module (102) is high, so as to reduce a drive voltage required by the display module (102) while keeping a brightness change of the display module (102) small. In this manner, the temperature of the display module (102) can be reduced, the display module (102) can be prevented from being damaged, and the display device (10) has a high reliability.

A display device dynamically determines pixel settle times to reduce a display latency. The display device includes a backlight unit (BLU) for providing light for displaying an image, a plurality of pixels for modulating the light provided by the BLU, and a controller circuit for controlling the BLU and the plurality of pixels. The controller circuit determines a settle time from display data for a current display frame and display data for a previous display frame, and turns on the BLU based on the determined settle time. The determined settle time corresponding to an expected amount of time for the plurality of pixel to transition from a first state corresponding to the display data for the previous display frame to a second state corresponding to the display data for the current display frame.

The present invention relates to an image display device and an operation method therefor. An image display device according to an embodiment of the present invention comprises a housing, a roller disposed inside the housing, and a plurality of pixels. The image display device includes: a display panel that can be wound on or unwound from the roller; and a control unit for controlling the operation of the roller so that the display panel rolls up or rolls down. The control unit can check the temperature of the display panel, and apply a main signal to at least one of the plurality of pixels according to the temperature of the display panel when the temperature of the display panel is less than a reference temperature, and control the operation of the roller when the temperature of the display panel is the reference temperature or higher. Various other embodiments are also possible.

For a node in which a difference between a base sensor value which is a sensor value obtained at certain time intervals and a first reference value which is a sensor value obtained when an organic EL element does not emit light in normal temperature state is greater than a threshold value, a correction value calculation circuit stores the product of a base computing value and a third reference value as a correction value in a correction value storage unit, the third reference value representing a ratio of the first reference value to a second reference value which is a sensor value obtained when the organic EL element emits light in normal temperature state, and the base computing value being obtained by providing the product of the third reference value and the base sensor value as an input value to a base computing value calculation circuit.

A display may include an array of pixels. Each pixel in the array may include a drive transistor, emission transistors, a data loading transistor, a gate voltage setting transistor, an initialization transistor, an anode reset transistor, a storage capacitor, and an optional current boosting capacitor. A data refresh may include a initialization phase, a threshold voltage sampling phase, and a data programming phase. The threshold voltage sampling phase can be substantially longer than the data programming phase to decrease a current sampling level during the threshold voltage sampling phase, which helps reduce the display luminance sensitivity to temperature variations.

A screen saver controller includes a temperature calculator, a temperature comparator, an operator, and a screen saver data generator. The temperature calculator calculates temperature data of a display panel based on input image data. The temperature comparator receives the temperature data and a target temperature and compares a temperature of the display panel with the target temperature to generate temperature change data. The operator receives the temperature data and the temperature change data and generates operation data based on the temperature data and the temperature change data. The screen saver data generator receives the operation data and generates screen saver data based on the operation data. The screen saver controller adjusts a luminance of the display panel based on the screen saver data when operating in a first mode.

A display apparatus may include a display panel including a plurality of light emitting diode (LED) pixels; a panel driver configured to provide a driving signal to the display panel to drive the display panel; a memory storing heating characteristic information of each of a red (R) sub-pixel, a green (G) sub-pixel, and a blue (B) sub-pixel included in each of the plurality of LED pixels; and a processor configured to: obtain an average brightness value corresponding to an input image based on a gray level value of the input image, obtain heating estimation data of the input image based on the gray level value of the input image and the heating characteristic information stored in the memory, modify the obtained average brightness value based on the heating estimation data, and control the panel driver based on the modified average brightness value.

A display device according to example embodiments includes an image analyzer configured to calculate contrast and load of an image of a frame based on R, G, and B image data input corresponding to the frame, an image processor configured to control a peak control coefficient applied to W image data to adaptively control peak luminance based on the contrast and the load, and to respectively generate R′, G′, and B′ image data by subtracting a product of the W image data and the peak control coefficient from each of the R, G, and B image data, a display panel including a plurality of pixels, a data driver configured to generate a data signal based on the R′, G′, B, and W image data, and to provide the data signal to the display panel, and a scan driver configured to provide a scan signal to the display panel.

An organic light-emitting circuit structure having a temperature function includes an organic light-emitting diode which has an anode and a cathode opposite to each other; a driving transistor including a first electrode and a second electrode; the first electrode is a source electrode, the second electrode is a drain electrode; or, the first electrode is the drain electrode, the second electrode is the source electrode; a temperature sensitive resistor, which is electrically connected between the driving transistor and the light-emitting device or between the driving transistor and the voltage source. The temperature sensitive resistor increases a resistance value at sensing a temperature increase or decreases the resistance value at sensing a temperature decrease. As a result a current through the organic light-emitting diode stays compensated and stable, thereby ensuring that the organic light-emitting diode keeps emitting light normally under various temperature conditions.