Driving method for display apparatus for adjusting grayscale value of display image and display device thereof

A driving method, comprising:

• dividing pixels of an original display image into a plurality of areas, wherein each of the plurality of areas comprises the pixels;
• dividing a frame original display image in one of the plurality of areas into a first display image and a second display image;
• acquiring a first mean value, a second mean value and a third mean value corresponding to the original display image in a divided area or multiple divided areas;
• setting a mean value of first components corresponding to the first display image in the divided area or the multiple divided areas, a mean value of second components corresponding to the first display image in the divided area or the multiple divided areas, and a mean value of third components corresponding to the first display image in the divided area or the multiple divided areas to be equal to the second mean value, and setting a mean value of the first components corresponding to the second display image in the divided area or the multiple divided areas and a mean value of the third components corresponding to the second display image in the divided area or the multiple divided areas to be equal to the third mean value, and setting a mean value of the second components corresponding to the second display image in the divided area or the multiple divided areas to be equal to a preset mean value;
• regulating a brightness value of a backlight circuit corresponding to the divided area or the multiple divided areas, according to the mean value of the first components corresponding to the original display image in the divided area or the multiple divided areas, the mean value of the second components corresponding to the original display image in the divided area or the multiple divided areas, and the mean value of the third components corresponding to the original display image in the divided area or the multiple divided areas, the mean value of the first components corresponding to the first display image in the divided area or the multiple divided areas, the mean value of the second components corresponding to the first display image in the divided area or the multiple divided areas, and the mean value of the third components corresponding to the first display image in the divided area or the multiple divided areas, and the mean value of the first components corresponding to the second display image in the divided area or the multiple divided areas, the mean value of the second components corresponding to the second display image in the divided area or the multiple divided areas, and the mean value of the third components corresponding to the second display image in the divided area or the multiple divided areas;
• acquiring a drive component corresponding to the pixel of the second display image in the divided area or the multiple divided areas, according to the brightness value of the backlight circuit corresponding to the divided area or the multiple divided areas before regulation, the brightness value of the backlight circuit corresponding to the divided area or the multiple divided areas after regulation, one of the first component, the second component, and the third component corresponding to the pixel of the original display image in the divided area or the multiple divided areas, and the drive component corresponding to the pixel of the first display image in the divided area or the multiple divided areas;
• and
• driving the pixel units corresponding to the divided area or the multiple divided areas of the display device for display, according to the drive components corresponding to the pixels of the first display image in the divided area or the multiple divided areas, the drive components corresponding to the pixels of the second display image in the divided area or the multiple divided areas.

A display device, comprising:

• an image dividing circuit configured to divide an original display image into a first display image and a second display image, wherein each of pixels of the original display image, the first display image and the second display image comprises components corresponding to a color space, and the components comprise a first component, a second components and a third component;
• a mean value acquisition circuit electrically connected to the image dividing circuit, and configured to acquire a first mean value, a second mean value and a third mean value corresponding to the original display image, and wherein the first mean value, the second mean value and the third mean value are a mean value of the first components corresponding to the original display image, a mean value of the second components corresponding to the original display image, and a mean value of the third components corresponding to the original display image, respectively, and the first mean value is higher than the second mean values, and higher than the third mean value;
• a component setting circuit electrically connected to the mean value acquisition circuit, and configured to set the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image to be equal to a second mean value, and set the mean value of the first components corresponding to the second display image and the mean value of the third components corresponding to the second display image to be equal to the third mean value, and set the mean value of the second components corresponding to the second display image to be equal to a preset mean value;
• a backlight regulation circuit electrically connected to the component setting circuit, and configured to regulate a brightness value of a backlight circuit according to the mean value of the first components corresponding to the original display image, the mean value of the second components corresponding to the original display image, and the mean value of the third components corresponding to the original display image, the mean value of the first components corresponding to the first display image, the mean value of the second components corresponding to the first display image, and the mean value of the third components corresponding to the first display image, and the mean value of the first components corresponding to the second display image, the mean value of the second components corresponding to the second display image, and the mean value of the third components corresponding to the second display image;
• a drive component acquisition circuit electrically connected to the backlight regulation circuit, configured to acquire a drive component corresponding to the pixel of the second display image according to the brightness value of the backlight circuit before regulation, the brightness value of the backlight circuit after regulation, one of the first component, the second component, and the third component corresponding to the pixel of the original display image, and the drive component corresponding to the pixel of the first display image, and wherein the drive components corresponding to the pixel of the first display image is equal to a second largest component among the first component, the second component, and the third component corresponding to the pixel of the original display image;
• and
• a driver circuit electrically connected to the drive component acquisition circuit, and configured to according to the drive components corresponding to the pixels of the first display image, and the drive components corresponding to the pixels of the second display image, driving the pixel unit of the display device for display.