ORGANIC LIGHT EMITTING DIODE(OLED) DRIVER CIRCUIT FOR DISPLAY DEVICE APPLICATION, ESPECIALLY PREVENTING REVERSE CURRENT THROUGH SPECIFIC OLED BY INDUCING FORWARD CURRENT CONSTRICTION THROUGH OTHER OLED

摘要

PURPOSE: An organic light emitting diode(OLED) driver circuit for display device application is provided to generate high light output combined with good contrast, and to enable a dynamic range by improving speed and resolution using a common anode configuration. CONSTITUTION: A display device includes a plurality of OLEDs(120) having an anode and a cathode and at least one driving circuit(200). The OLED is connected to anode lines(1-2-3) and cathode lines(4-5-6). The driving circuit is constituted as a common anode driving device, and each cathode line by the first switch(220a-220b-220c) are connected to current sources(150a-150b-150c), and each anode line by the second switch(210a-210b-210c) are connected to an anode power supply line. Each of the first switch is connected between the cathode line and each current source when the cathode line is being used, and the cathode line is connected to the anode power supply when the cathode line is not being used.