Organic light emitting diode display device and driving method thereof

摘要

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 configured to output scan signals to sequentially turn on the plurality of OLED pixels. The source driver is configured to output display voltages to the plurality of OLED pixels. The voltage controller is configured to adjust 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.

主权项

1. An organic light emitting diode (OLED) display device, comprising:
a plurality of OLED pixels, each of the OLED pixels comprising:
a current control switch with a first end coupled to a first voltage source; andan OLED with a first end coupled to a second end of the current control switch, and a second end coupled to a second voltage source; a gate driver configured to output scan signals to sequentially turn on the plurality of OLED pixels; a source driver configured to output display voltages to the plurality of OLED pixels; and a voltage controller configured to adjust 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 in order to reduce a voltage difference between the first end and the second end of the current control switch to a minimum value of a saturation region of the current control switch.