| 摘要 |
Disclosed are an apparatus and a method for compensating for a fluctuation in threshold voltage due to a deterioration of a driving transistor TR12 included in pixel circuits P × 10 of an organic light-emitting display device. The organic light-emitting display device includes a plurality of pixel circuits P × 10 which are disposed at areas in which a plurality of gate lines supplying row selecting signals SCAN and a plurality of data lines supplying image signals Vdata intersect each other, wherein each pixel circuit P × 10 comprises: an organic EL device OLED10, a driving transistor TR12 controlling a current flowing in the organic EL device OLED10 depending on the image signal Vdata; a switching transistor TR11 controlling a conduction state depending on the row selecting signal SCAN; a first capacitor C11 being charged with a threshold voltage of the driving transistor; and a second capacitor C12 being charged with a voltage corresponding to the image signal Vdata, and the driving transistor applies a current corresponding to a summed voltage of the voltage charged in the first capacitor and the voltage charged in the second capacitor to the organic EL device OLED 10, such that the organic EL device OLED10 emits light at luminance corresponding to the current. |
