Emissive type display device, semiconductor device, electronic device, and power supply line driving method

An electronic device comprising:

• a pixel array section having pixels ready for an active matrix driving system;
• a first driving circuit for driving a signal line;
• a second driving circuit for controlling an operation of writing a potential of said signal line to each pixel forming said pixel array section;
• a circuit for setting a peak luminance level of each display frame;
• a third driving circuit for variably controlling a total application period length of a driving voltage applied to a power supply line connected to each pixel and amplitude of the driving voltage so as to obtain a set peak luminance level, when the set peak luminance level is lower than a set value, the third driving circuit dividing the driving voltage into a plurality of times of pulse waveform, and variably controlling the amplitude of the driving voltage at each output time according to the peak luminance level such that the amplitude of the driving voltage at least one output time is lower than a maximum driving voltage in a non-emission period;
• a system controlling section configured to control operation of an entire system;
• and
• an operating input section configured to receive an operating input to said system controlling section.

A method of driving a power supply line disposed in an emissive type display device, said method comprising the steps of:

• in variably controlling a total application period length of a driving voltage applied to a power supply line connected to each pixel forming a pixel array section and amplitude of the driving voltage so as to obtain a set peak luminance level,
• dividing the driving voltage into a plurality of times of pulse waveform when the set peak luminance level is lower than a set value;
• and
• variably controlling the amplitude of the driving voltage at each output time according to the peak luminance level such that the amplitude of the driving voltage at least one output time is lower than a maximum driving voltage in a non-emission period.