Patent ID: 7038654

Claim:
A display apparatus, comprising: a display panel; a display memory for storing contents to be displayed on said display panel; a step-up circuit for stepping up a power source voltage to a predetermined 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 period of time in which the current for driving said display panel do not change appreciably, 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 with 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.