Drive method and drive device of liquid crystal display

A driving method of a liquid crystal display, comprising:

• Step 1:
• receiving an image, wherein the image comprises image pixels respectively comprising primary color components;
• Step 2:
• setting different weights for the primary color components of the image pixels of the image, comprising:
• determining skin color weights by implementing a skin color detection process to the image pixels of the image to determine a nude pixel and a non skin color pixel among the image pixels;
• and setting different weight values for the nude pixel and the non skin color pixel of the image pixels to serve as the skin color weights, such that the skin color weights set for the primary color components of the nude pixel are different;
• and
• Step 3:
• implementing a color washout compensation to the image pixels of the image according to the weights set for the primary color components of the image pixels, comprising wherein an original gray scale value of each of the primary color components of each of the image pixels of the image is employed to generate a first display gray scale value and a second display gray scale value that are respectively applied to control display brightness levels of two display pixels of the same color of the multiple display pixels on the liquid crystal display, the first display gray scale value being greater than the second display gray scale value, wherein for each of the primary color components of each of the image pixels of the image, a ratio of the first display gray scale value and the second display gray scale value is determined according to the skin color weight thereof so as to make a ratio of the first display gray scale value and the second display gray scale value of the nude pixel larger than a ratio of the first display gray scale value and the second display gray scale value of the non skin color pixel, and ratios of the first display gray scale values and the second display gray scale values of the different primary color components of the nude pixel are different, and
• wherein a sum of display brightness level corresponding to the first display gray scale value and display brightness level corresponding to the second display gray scale value is twice of display brightness level corresponding to the original gray scale value;
• and
• Step 4:
• driving the liquid crystal display to display the primary color components of the image pixels of the image after the color washout compensation.