DRIVING APPARATUS AND DRIVING METHOD FOR ORGANIC LIGHT EMITTING DEVICE

摘要

A driving apparatus and a driving method for an organic light emitting device is provided to shorten a lifetime due to current variation flowing an emitting diode by controlling a current flowing a emitting diode. An amplifying unit(651) expands the number of a first image signal and outputs a second image signal. A compression unit(653) reduces the number of the grayscale of a second image signal, and it compresses a corresponding voltage and generates a third image signal. An operation unit(652) calculates a voltage corresponding to a second image signal and outputs a constant value, and an accumulation unit(654) accumulates the constant value. A memory(655) increases the number of the bit in response to an output signal of the accumulation unit.