A driving controller includes: a logo determiner configured to determine whether or not input image data includes a logo; a logo grayscale value calculator configured to calculate a logo grayscale value of a logo area corresponding to the logo in response to the input image data including the logo; a light emitting element life expectancy determiner configured to determine a life expectancy of a light emitting element corresponding to the logo area; a compensation reference grayscale value generator configured to determine a compensation reference grayscale value according to the life expectancy of the light emitting element corresponding to the logo area; and a logo luminance compensator configured to compare the logo grayscale value to the compensation reference grayscale value to determine whether or not to compensate a luminance of the logo area.

A light-emitting panel and a display device are provided. The light-emitting panel includes a base substrate, and a plurality of driving transistors and a plurality of light-emitting elements. One driving transistor is electrically connected to at least one light-emitting element. The plurality of light-emitting elements are arranged in an array to form one or more light-emitting element rows along a first direction and to form one or more light-emitting element columns along a second direction. In a direction parallel to a plane of the base substrate, the first direction intersects the second direction. In the direction parallel to the plane of the base substrate, a quantity of driving transistors adjacent to one light-emitting element is A, where A<2 and A is an integer.

A display device may include a display panel which displays an image based on a data voltage, a driving controller including a net power control setter which determines a scale factor for adjusting a gray scale of (N+1).sup.th frame data based on a load of N.sup.th frame data and a net power control reference value, where the driving controller generates a data signal based on input image data, and N is a natural number greater than or equal to 2, a data driver which converts the data signal into the data voltage and outputs the data voltage to the display panel, and a power supply voltage generator which senses a power supply current applied to the display panel in an N.sup.th frame and generates a power supply voltage based on a current level of the power supply current.

A display device including: a display panel including first and second display areas, and including pixels in the first and second display areas; and a data driver to output data signals to the pixels through a channels arranged along a first direction, wherein the channels include a first channel group corresponding to the first display area and a second channel group corresponding to the second display area, wherein some of the pixels emit light in different colors and have a first pixel arrangement along the first direction, and based on channel selection information about the first or second channel groups, the data driver outputs first data signals in a first output order along the first direction corresponding to the first pixel arrangement through the first channel group, and outputs second data signals in a second output order different from the first output order through the second channel group.

An embodiment provides a latch circuit which outputs, to a digital analog converter (DAC), a digital signal including grayscale data, the latch circuit including a first latch configured to store the digital signal and a second latch configured to output the digital signal by controlling first timing at which a level of a first signal included in the digital signal becomes an enable level, based on a center grayscale. The grayscale data includes first grayscale data and second grayscale data.

Disclosed is a display device comprising: a display panel on which a plurality of pixels of different colors are arrayed; a power supply configured to supply a high-potential driving voltage to the display panel; and a data driver configured to calculate an average picture level of input image data, and generate a data voltage based on a compensation value for compensating for a voltage drop of the high-potential driving voltage based on the calculated APL, wherein the compensation value is independently set for each of the colors.

A luminance difference correction method and a light emitting display apparatus using the same is discussed. The luminance difference correction method can include receiving by an camera an image, which is output from a camera region of a light emitting display panel and is reflected by at least one of a reflector or a cover glass associated with the apparatus. The method can further include analyzing by a controller the image received by the camera, and varying a level of at least one of (i) a gamma voltage used to generate a data voltage to be output to data lines included in the light emitting display panel, and (ii) one or more of driving voltages supplied to pixels included in the light emitting display panel.

Disclosed is a display device comprising a light emitting element, and a pixel driving circuit connected to the light emitting element and configured to include first to fourth nodes, wherein the pixel driving circuit includes a driving transistor connected to the first to third nodes, a plurality of switching transistors, a storage capacitor, and a plurality of signals and voltage lines, wherein an initialization voltage applied through an initialization line among the plurality of signals and voltage lines is varied based on a data voltage.

A display device includes a substrate, pixels on the substrate, and a driving circuit unit connected to the pixels through data lines. The driving circuit unit includes a thermistor having a resistance value which changes according to a temperature of the substrate and a register group in which set values of a dimming ratio corresponding to the temperature are stored, the driving circuit unit controls the pixels to emit light with a first luminance based on the dimming ratio when the temperature based on the resistance value is less than a minimum temperature, the driving circuit unit controls the pixels to emit light with a second luminance based on the dimming ratio when the temperature is greater than the minimum temperature and less than a maximum temperature, and the driving circuit unit stops image display of the pixels when the temperature is greater than the maximum temperature.

A display apparatus includes a display panel and a display panel driver. The display panel includes a first display area having a first pixel structure and a second display area having a second pixel structure different from the first pixel structure. The display panel driver drives the display panel in a first mode when an image complexity of input image data corresponding to a determination area which includes the first display area is greater than a threshold value and to drive the display panel in a second mode different from the first mode when the image complexity of the input image data is less than or equal to the threshold value.