1. Field of the Invention
The present invention relates to an organic light emitting device and a driving method thereof, and more particularly, to an organic light emitting device, which can reduce quality deviation between display devices, and a method of configuring a gamma set of the same.
2. Description of the Related Art
In line with the tendency toward lightweightness and slimness of portable display devices such as notebook computers, cellular phones or portable multimedia players (PMPs) as well as displays for home use, such as a TV or a monitor, a variety of flat display devices are widely used. There are various types of flat display devices, including a liquid crystal display device, an organic light emitting device and an electrophorectic display device. Among the flat display devices, the organic light emitting device is increasingly demanded owing to its various advantages, including low power consumption, high brightness, high contrast ratio, and facilitated enabling of a flexible display.
The organic light emitting device implements an image using an organic light emitting diode (OLED) as a light-emitting element. The OLED emits light with brightness corresponding to the current flowing therein. The organic light emitting device includes a plurality of OLEDs and may display an image by controlling gray scales of the respective OLEDs by controlling the current flowing in each OLED. The organic light emitting device may include a plurality of thin film transistors to control the current flowing in each OLED.
Even if organic light emitting devices are manufactured by the same process, they may have different display quality characteristics in view of brightness and color coordinate system due to differences in OLED characteristics of the respective devices. Accordingly, in order to effectively manage quality of the organic light emitting device, it is necessary to reduce a deviation in display quality.