Organic light emitting display device and driving method thereof
AssigneeSamsung Display Co., Ltd.
InventorJi-Hyun Ka
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Abstract
An organic light emitting display device capable of stably compensating for a threshold voltage of a driving transistor is provided. The organic light emitting display device includes pixels each having a driving transistor and being configured to initialize a voltage of the driving transistor by an initialization power, a gray level determining unit for generating a gray level value using externally supplied data, and an initialization power generator for controlling a voltage level of the initialization power to correspond to the gray level value.
Claims16
An organic light emitting display device comprising:
- pixels each comprising a driving transistor and being configured to initialize a voltage of a gate electrode of the driving transistor to a common variable gate initialization voltage;
- a gray level determining unit for generating a representative gray level value of a frame using externally supplied data corresponding to the frame;
- and
- an initialization power generator for supplying the common variable gate initialization voltage to the pixels and varying the common variable gate initialization voltage each frame in correspondence with the representative gray level value of the frame.
A driving method of an organic light emitting display device comprising pixels each having a driving transistor and being configured to initialize a voltage of a gate electrode of the driving transistor to a common variable gate initialization voltage, the driving method comprising:
- extracting a representative gray level value of a frame using externally supplied data corresponding to the frame;
- and
- supplying the common variable gate initialization voltage to the pixels and varying the common variable gate initialization voltage each frame in correspondence with the representative gray level value of the frame.
Dependencies are inferred from the claim text.