Display device and electronic device

A display device comprising:

• a display panel including a pixel configured to receive a driving voltage;
• a voltage generator configured to generate the driving voltage, to change a voltage level of the driving voltage as much as a given first variation or more, based on a voltage control signal, and to change the voltage level of the driving voltage as much as a second variation or less, based on a holding control signal, the second variation being smaller than the first variation;
• and
• a power consumption controller configured to determine whether a previous image based on a previous image data coincides with a given grayscale pattern condition and to generate the voltage control signal or the holding control signal depending on a result of a determination whether the previous image based on the previous image data coincides with the given grayscale pattern condition.

An electronic device comprising:

• a display module including a display panel configured to receive a driving voltage and a voltage generator configured to generate the driving voltage and to determine a voltage level of the driving voltage based on a voltage control signal;
• a driving controller configured to receive an image signal and to convert the image signal into an image data;
• and
• a main processor configured to provide the image signal to the driving controller,
• wherein the driving controller includes:
• a current compensator configured to calculate a load based on a previous image data and to an output compensation image data having a target luminance by compensating for a current image data based on the load, and
• wherein the driving controller is configured to:
• turn on the current compensator in a normal mode such that an image is displayed with the target luminance, and
• turn off the current compensator in a setting mode such that an image corresponding to the current image data is displayed with a given reference luminance.

An electronic device comprising:

• a display panel configured to receive a driving voltage;
• a voltage generator configured to generate the driving voltage, to change a voltage level of the driving voltage as much as a given first variation or more based on a voltage control signal, and to change the voltage level of the driving voltage as much as a second variation or less based on a holding control signal, the second variation being smaller than the first variation;
• and
• a driving controller configured to receive an image signal and to convert the image signal into an image data;
• a main processor configured to provide the image signal to the driving controller;
• and
• a power consumption controller configured to determine whether a previous image based on a previous image data coincides with a given grayscale pattern condition and to generate the voltage control signal or the holding control signal depending on a result of a determination whether the previous image based on the previous image data coincides with the given grayscale pattern condition.