| 摘要 |
An apparatus for generating a gray scale voltage in an organic light emitting display device is disclosed. In one aspect, the apparatus includes a gamma reference voltage generator, a gray scale voltage output unit and a gray scale voltage selector. The gamma reference voltage generator outputs a gamma reference voltage. The gray scale voltage output unit outputs N first gray scale voltages, based on the gamma reference voltage. The gray scale voltage selector has a lookup table in which voltage values respectively corresponding M reference gray scales are previously set, and outputs second gray scale voltages by selecting M of the N first gray scale voltages. |
