Mura compensation method for display panel

A Mura compensation method for display panel, which comprises the steps of:

• Step S1:
• shifting a plurality of grayscales of an entire inputted image or picture downwards to reserve space for Mura compensation;
• Step S2:
• obtaining luminance information of a grayscale b other than the lowest grayscale from the inputted through an image console, i.e., Mura value;
• Step S3:
• obtaining luminance information of 0 to the lowest grayscale from the inputted through an image console, and generating an index table for Mura values for 0 to the lowest grayscale;
• Step S4:
• using the Mura value of grayscale b obtained in Step S2 and using linearly interpolation algorithm to calculate the Mura values for the remaining grayscales;
• Step S5:
• determining whether the inputted data signal being smaller than the lowest grayscale;
• if so, proceeding to Step S6;
• otherwise, proceeding to Step S7;
• Step S6:
• searching the index table for Mura value to perform Mura compensation to make the compensated grayscale larger than the lowest grayscale;
• and
• Step S7:
• determining whether the inputted data signal being dynamic image;
• if so, using linear interpolation algorithm to calculate the Mura value corresponding to the inputted data signal;
• otherwise, using non-linear interpolation algorithm to calculate the Mura value corresponding to the inputted data signal;
• wherein in Step S1, the plurality of grayscales of an entire inputted image or picture is shifted downwards by 32 grayscales, and the shifted grayscales are grayscales 223, grayscale 192, grayscale 160, grayscale 128, grayscale 96 and grayscale 64;
• wherein in Step S4, the linear interpolation algorithm used to calculate the Mura values of the remaining grayscales is:
• Y
• a
• Y
• b
• =
• X
• a
• X
• b
• Wherein Xb is grayscale b, Xa is any grayscale of the remaining grayscales;
• Yb is the Mura value corresponding to grayscale b, and Ya is the Mura value corresponding to any grayscale of the remaining grayscales.