DATA DRIVING CIRCUIT FOR CURRENT WRITING TYPE AMOEL DISPLAY PANEL

摘要

PROBLEM TO BE SOLVED: To provide a new driving circuit for an AMOEL (active matrix organic luminescent) panel having a current writing type pixel structure.

SOLUTION: The driving circuit is characterized in that it includes a plurality of current output channels and a plurality of channel current generating circuits which are located corresponding to the current output channels in order to minimize the differences in current levels generated between the channels. Each channel current generating circuit consists of a pair of transistors and is provided with a current generating part which generates a current having small deviation and is made proportional to the square of the difference between the threshold voltages of the transistors, and a current mirror part which mirrors the current and outputs the mirrored current as the current of the channels.

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