| 摘要 |
A method for generating a gray scale voltage in an organic electroluminescence display device according to an embodiment of the present invention comprises the following steps. A gamma table is set on the basis that a screen displayed on a pixel part of the organic electroluminescence display device emits light at a first brightness level. A gamma reference voltage lookup table is established which records voltage values of red, green and blue data corresponding to each gray scale and brightness at the first brightness level, based on the gamma table. A second brightness level different from the current brightness level is selected. A gamma reference voltage control signal corresponding to the second brightness level is outputted with reference to the gamma table and the gamma reference voltage lookup table. The gamma reference voltage control signal is received and first gamma reference voltages corresponding to the second brightness level are set. A specific gray scale corresponding to a low gray scale region is fixed as a reference gray scale, and a voltage corresponding to the fixed reference gray scale is actually measured at the second brightness level and is set as a second gamma reference voltage. Gray scale voltages corresponding to the second brightness level are generated through the plurality of set gamma reference voltages and are outputted to a data driving unit. |
