APPARATUS FOR CONTROLLING DRIVING CURRENT OF ORGANIC LUMINESCENCE ELECTRO DISPLAY PANEL USING FEEDBACK OF OUTPUT SIGNAL AND ITS CONTROL METHOD, IN WHICH THE LUMINESCENCE OF A PANEL IS CONTROLLED UNIFORMLY

摘要

PURPOSE: An apparatus for controlling a driving current of an organic luminescence electro display panel(OLED) using feedback of an output signal and its control method are provided to make a uniform brightness and to increase display quality of an OLED panel by constituting a bias circuit capable of removing or minimizing deviation of each output current. CONSTITUTION: According to the apparatus for driving an organic luminescence electro display(OLED) panel, a basic bias signal to drive the OLED panel is inputted to an input port(20). An output signal of the input port is divided into a plurality of signals and each of them is inputted to a plurality of multiple bias units(30a-30d) respectively. An output signal of the multiple bias unit is inputted to a plurality of output ports(40a-40d) respectively. And an output signal of the adjacent output port is inputted to a comparator unit(50a-50c), which calculates a difference of inputted signal and then feeds it back to the corresponding multiple bias unit.