Patent ID: 7391393

Claim:
A source driver for a current driven active matrix organic electroluminescent device, comprising: a shift register for generating an enable signal for storing data; a data latch circuit for storing digital data inputted from an exterior; a line latch circuit for sequentially storing the data in response to the enable signal and outputting the stored data in parallel at one time in response to a load signal; a current type digital-to-analog converter for converting the digital data outputted from the line latch circuit into an analog data signal, the analog data signal being outputted in a form of a current signal; and a high voltage shield circuit for transferring the analog data signal to source lines of an external panel and for shielding internal circuits of the source driver from a high voltage of the panel, wherein the internal circuits of the source driver are driven at a voltage substantially lower than the high voltage of the panel, the internal circuits of the source driver comprising the shift register, the data latch circuit, the line latch circuit, the current type digital-to-analog converter and the high voltage shield circuit.