| 摘要 |
<p>An organic light-emitting display device including a white sub-pixel according to an aspect of the present invention can prevent a color coordinate change and afterimage caused by degradation of a white organic light-emitting device, and comprises: a display panel including a plurality of unit pixels consisting of red, green, blue, and white sub-pixels having organic light-emitting devices; a 4-color data converting unit for converting red, green, and blue input data into red, green, blue, and white input data by using a first lookup table (LUT); a degradation compensating unit for generating red, green, blue, and white output data by reflecting a particular gain value to the red, green, blue, and white input data, accumulating and storing the red, green, blue, and white output data in every set accumulation period, calculating a color ratio value of red, green, and blue colors according to the accumulated white output data, and feeding back the same to the 4-color data converting unit; and a panel driving unit for outputting a particular image through the display panel by supplying the red, green, blue, and white output data to a corresponding sub-pixel. The 4-color data converting unit renews the first lookup table based on the fed back color ratio value so that a color temperature of the white sub-pixel can become a target color temperature.</p> |
