Display apparatus and operating method thereof

An operating method of a display apparatus, comprising:

• providing a control unit and a display module, wherein the display module is coupled to the control unit;
• and
• outputting a first signal to the display module through the control unit, such that the display module continuously displays a first image in a first frame time based on the first signal, wherein the first image has a first pattern, and a first ratio of an area of the first pattern to an area of the first image ranges from 5% to 30%,
• wherein the first pattern at a first time point in the first frame time has a color located at a first coordinate position in a CIE 1931 chromaticity diagram, the first pattern at a second time point in the first frame time has another color located at a second coordinate position in the CIE 1931 chromaticity diagram, and the first coordinate position is different from the second coordinate position.