Device, system and method for display gamma correction

A display module Gamma correction device, comprising:

• a storage unit configured to store m binding point values of a grayscale corresponding to a set of initial Gamma register values and x sets of alternate Gamma register values;
• a Gamma correction unit configured to obtain corrected Gamma register values corresponding to binding points of a grayscale by correcting register values of s binding points selected from the set of m binding points of the grayscale based on a group of initial Gamma register values that correspond to the m binding points and a Gamma curve;
• and
• a reference Gamma register value selecting unit configured to select, from x sets of alternate Gamma register values wherein each set corresponds to m binding points and the initial Gamma register values, a set of Gamma register values used for Gamma correction of the display module(s) as reference register values;
• wherein said Gamma correction unit further configured to perform Gamma correction on the remaining (m s) binding points based on the reference Gamma register values and the target Gamma curve so as to obtain a set of target Gamma register values corresponding to the m binding points;
• and wherein s, m, and x are all integers greater than one.