Gamma voltage generation circuit, method and data driver

摘要

The present invention provides a Gamma voltage generation circuit and method and a data driver. The circuit includes multiple resistors connected in series, configured to generate multiple candidate voltages corresponding to non-linear regions of a voltage-light transmissivity curve, the number of the multiple candidate voltages being more than the number of Gamma voltages corresponding to the non-linear regions of the voltage-light transmissivity curve; and voltage selectors connected to common ends of every two adjacent resistors of the multiple resistors, configured to select at least one candidate voltage from the multiple candidate voltages as the Gamma voltage(s) corresponding to the non-linear regions of the voltage-light transmissivity curve so that an actual Gamma curve coincides with an ideal Gamma curve, each common end corresponding to a candidate voltage. The Gamma voltage generation circuit according to the present invention is applicable to display panels with different voltage-light transmissivity curves.