| 摘要 |
An OLED device and a driving method thereof are provided to improve visibility by adjusting luminance of pixels according to the adjustment of gamma gray voltages of data signals corresponding to the lightness of ambient beams. An OLED(Organic Light Emitting Display) device includes a pixel unit(100), scan and data drivers(200,300), an optic sensor(500), and first and second luminance controllers(400,600), The pixel unit includes pixels connected to scan lines, light emitting control lines, and data lines. The scan driver is electrically connected to the pixel unit through the scan and light emitting control lines. The data driver is connected to the pixel unit through the data lines. The optic sensor generates an optic detection signal corresponding to the lightness of ambient light. The first luminance controller generates a first luminance control signal for adjusting gamma gray voltages of data signals corresponding to the optic detection signal. The second luminance controller, which is turned on and off based on the optic detection signal, generates a second luminance control signal for adjusting the pulse width of a light emitting control signal corresponding to one frame data.
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