Patent ID: 7471050

Claim:
An organic EL drive circuit including a plurality of current drive circuits, for generating each a PWM pulse having a pulse width corresponding to display data corresponding to luminance of organic EL elements and outputting each a drive current for driving the organic EL elements for a time period corresponding to the PWM pulse, comprising a peak current generator circuit for generating a peak current on the drive current and means for converting the display data into light emitting timing data, wherein the current drive circuit is provided for each of output pins connected to the respective organic EL elements, the peak current generator circuit generates the peak current larger than the drive current corresponding to the display data when a value of the display data is a predetermined value or a value lower than the predetermined value; wherein the peak current initially charges the organic EL elements or emits light initially when the display data value is the predetermined value or lower; and wherein the current drive circuit includes an output stage current source, the PWM pulse has the pulse width corresponding to the light emitting time data, the output stage current source is driven by the PWM pulse and the predetermined value corresponds to a display data value of low luminance with which luminance difference on a display screen is unclear.