Patent ID: 8854294

Claim:
A display device, comprising a display panel comprising a plurality of unit pixels defining a viewable region of the display device and having a plurality of color channels, each of the plurality of color channels having an associated gamma correction profile; and a source driver integrated circuit (IC) configured to process an image data stream and to transmit the processed image data to the display panel, wherein the source driver IC comprises: gamma adjustment circuitry comprising: a plurality of resistor strings, each corresponding to a respective one of the plurality of color channels, wherein each resistor string is configured to provide a plurality of output voltage levels corresponding to a respective color channel; a plurality of sets of gamma adjustment voltage taps, each set of voltage taps corresponding to a respective one of the plurality of resistor strings, wherein each gamma adjustment voltage tap within a set is configured to be adjustably coupled to a respective location on a respective resistor string based upon a gamma correction profile configured to define a set of gamma adjustment locations along the respective resistor string to which each of a corresponding set of gamma adjustment voltage taps are coupled, wherein each respective set of gamma adjustment locations is determined based at least in part on transmittance sensitivity characteristics that corresponds to a transmittance versus voltage curve for the respective color channel, and wherein each respective set of gamma adjustment locations along the respective resistor string is determined by substantially optimizing a portion of the set of gamma adjustment locations to concentrate in a voltage range that corresponds to an area comprising a maximum absolute value of the transmittance sensitivity characteristics for the respective color channel; and a selection circuit configured to receive the plurality of output voltage levels provided by each of the resistor strings, to select one of the output voltage levels based upon one or more selection signals, and to output the selected voltage level to the display panel.