1. Field
Embodiments relate to an organic light emitting display and a method of driving the same. More particularly, embodiments relate to an organic light emitting display and a method of driving such an organic light emitting display capable of uniformly maintaining brightness and color coordinates so that a user cannot recognize a change in a frame frequency.
2. Description of the Related Art
Recently, various flat panel displays (FPD) that are lower in weight and smaller in volume than comparable cathode ray tubes (CRT) have been developed. FPDs generally include liquid crystal displays (LCD), field emission displays (FED), plasma display panels (PDP), and organic light emitting displays.
Among the FPDs, organic light emitting displays may display images using organic light emitting diodes (OLED) that generate light by the re-combination of electrons and holes. Organic light emitting displays generally have characteristics such as relatively high response speeds and lower power consumption.
In general, organic light emitting displays include pixels arranged in a matrix. Each of the pixels may include at least two transistors and at least one capacitor and organic light emitting diode (OLED).
The pixels may display an image with predetermined brightness by respectively supplying currents corresponding to voltages charged in the capacitors to the OLEDs via driving transistors. The capacitors may be charged with voltages corresponding to data signals, respectively, during a period when scan signals are supplied.
Organic light emitting displays may be adapted to be driving in a common driving mode with a first frame frequency and a low-power driving mode with a second frame frequency that is lower than the first frame frequency. Organic light emitting displays that are adapted to maintain brightness and/or color characteristics irrespective of changes in frame frequency are desired.