Organic light emitting diode display device and driving method thereof

An organic light emitting diode (OLED) display device includes a plurality of OLED pixels, a gate driver, a source driver, and a voltage controller. Each of the OLED pixels includes a current control switch and an OLED. A first end of the current control switch is coupled to a first voltage source. A first end of the OLED is coupled to a second end of the current control switch, and a second end of the OLED is coupled to a second voltage source. The gate driver is for outputting scan signals to sequentially turn on the plurality of OLED pixels. The source driver is for outputting display voltages to the plurality of OLED pixels. The voltage controller is for adjusting a voltage difference between the first voltage source and the second voltage source according to a maximum grey level value of display data of a frame. 本发明涉及有机发光二极管显示装置及其驱动方法。该有机发光二极管显示装置包含多个有机发光二极管像素，栅极驱动器，源极驱动器，及电压控制器。每有机发光二极管像素包含电流控制开关及有机发光二极管。该电流控制开关的第端耦接于第电压源。该有机发光二极管的第端耦接于该电流控制开关的第二端，该有机发光二极管的第二端耦接于第二电压源。该栅极驱动器用以输出扫描讯号，以依序开启这些有机发光二极管像素。该源极