CURRENT DRIVING PIXEL CIRCUIT AND ORGANIC LIGHT EMITTING DEVICE PIXEL CIRCUIT USING IT

摘要

A current driving pixel circuit and organic light emitting device pixel circuit using the same is provided to maintain operation current constantly by bypassing the variation amount of current. In a current driving pixel circuit and organic light emitting device pixel circuit, a first switching unit(310) makes the input current on/off by the predetermined voltage(Vscan) while including the first output terminal(312) and the second output terminal(314). The driving part(320) comprises the switching control terminal connected with the second output terminal of the first switching unit, the input terminal(322) connected to the predetermined power source(Vdd) and the output terminal(324) connected to the first output terminal of the first switching unit. One end of the voltage sustain unit(330) is connected to the second output terminal of the first switching part and switching control terminal of the driving part. The other end of the voltage sustain part is connected to the input terminal of the driving part. A second switching part(340) comprises the input terminal connected to the first output terminal of the first switching unit.