Power supply circuit for display unit, method for controlling same, display unit, and electronic apparatus

摘要

The invention prevents or substantially prevents the brightness from changing according to the number of pixels that are turned on in a display. A power supply circuit calculates the total number of pixels that are turned on using ON/OFF data RD that stipulates the ON/OFF state of the pixels 1400 and controls the output impedance of a power supply voltage that is transmitted to a display panel, so that the output impedance becomes lower as the calculated total number of the pixels increases.