Patent ID: 7466300

Claim:
A display apparatus, comprising: a display panel; a display memory for storing contents to be displayed on said display panel; a charge pump type step-up circuit in continuous step-up operation stepping up a power source voltage to output a step-up voltage; a drive circuit receiving said step-up voltage as the drive voltage for driving said display panel based on a drive condition defined by a drive condition setting value to display the contents of said display memory on said display panel; a temperature sensor for detecting the temperature of said display panel and outputting temperature data associated with the temperature; a temperature compensation circuit for changing said drive condition setting value, when said temperature data has changed in a second predetermined period of time after a first predetermined period immediately after a switch of said charge pump type step-up circuit is switched ON, from the drive condition setting value set before said temperature data has changed (said value referred to old drive condition setting value) to a drive condition setting value in accord wit the temperature after said temperature data has changed (said value referred to as new drive condition setting value); and a controller for controlling said display memory, step-up circuit, drive circuit, temperature sensor, and temperature compensation circuit.