An organic light emitting diode display, comprising: a substrate; scan lines transferring scan signals (Sn) to pixels; compensation control lines simultaneously transferring a compensation control signal (Gc) to the pixels; operation control lines applying operation control signals (Gw) to the pixels; data lines crossing the scan line and transferring data signals (Dm) to the pixels and driving voltage lines transferring a driving voltage (ELVDD) to the pixels; wherein each pixel comprises a switching thin film transistor (Ts) connected to the respective scan line and to the respective data line; a compensation thin film transistor (Tvth) and an initialization thin film transistor (Tinit) connected to the respective compensation control line; an operation control thin film transistor (Tgw) connected to the operation control line and the switching thin film transistor (Ts); a driving thin film transistor (Td) connected to the respective driving voltage line; an organic light emitting diode (OLED) connected to a driving drain electrode of the driving thin film transistor (Td); and a storage capacitor (Cst) connected between the driving voltage line and the operation control thin film transistor (Tgw); and a compensation capacitor (Cvth) connected between the operation control thin film transistor (Tgw) and the driving gate electrode of the driving thin film transistor (Td) and a hold capacitor (Chold) connected between an operation control source electrode of the operation control thin film transistor (Tgw) and an initialization gate electrode of the initialization thin film transistor (Tinit), wherein the hold capacitor (Chold) includes: a first hold condenser plate connected to a drain electrode of the switching thin film transistor (Ts); and a second hold condenser plate overlapping the first hold condenser plate, the organic light emitting diode display further characterized in that the scan lines are formed on the substrate, wherein the compensation control lines, the operation control lines and the driving voltage lines are crossing the scan lines and wherein the compensation control lines include vertical compensation control lines formed in parallel to the data lines and horizontal compensation control lines connected to the vertical compensation control lines at crossing positions with the vertical compensation control lines and the second hold condenser plate of each pixel is connected to the respective horizontal compensation control line. a substrate; scan lines transferring scan signals (Sn) to pixels; compensation control lines simultaneously transferring a compensation control signal (Gc) to the pixels; operation control lines applying operation control signals (Gw) to the pixels; data lines crossing the scan line and transferring data signals (Dm) to the pixels and driving voltage lines transferring a driving voltage (ELVDD) to the pixels; wherein each pixel comprises a switching thin film transistor (Ts) connected to the respective scan line and to the respective data line; a compensation thin film transistor (Tvth) and an initialization thin film transistor (Tinit) connected to the respective compensation control line; an operation control thin film transistor (Tgw) connected to the operation control line and the switching thin film transistor (Ts); a driving thin film transistor (Td) connected to the respective driving voltage line; an organic light emitting diode (OLED) connected to a driving drain electrode of the driving thin film transistor (Td); and a storage capacitor (Cst) connected between the driving voltage line and the operation control thin film transistor (Tgw); and a compensation capacitor (Cvth) connected between the operation control thin film transistor (Tgw) and the driving gate electrode of the driving thin film transistor (Td) and a hold capacitor (Chold) connected between an operation control source electrode of the operation control thin film transistor (Tgw) and an initialization gate electrode of the initialization thin film transistor (Tinit), a first hold condenser plate connected to a drain electrode of the switching thin film transistor (Ts); and a second hold condenser plate overlapping the first hold condenser plate,