US Patent 10515609 Display device and operation method thereof, and electronic device

A first circuit generates first display data that is digital data which has information on luminance of an image displayed on a display portion. A second circuit generates second display data that is digital data obtained by converting a digital value of the first display data. A third circuit generates a first analog signal and a second analog signal whose potentials are calculated on the basis of the digital value of the first display data. The potential of the second analog signal is lower than the potential of the first analog signal. A fourth circuit converts the second display data into third display data that is analog data. A potential of the third display data is calculated on the basis of the potential of the first analog signal, the potential of the second analog signal, and a digital value of the second display data.