A display panel, comprising: a polarizer comprising a dielectric layer and a wire grid structure array arranged on the dielectric layer , wherein the wire grid structure array comprises a plurality of wire grid structures , each of the wire grid structures comprises wire grid units consisting of three first wire grid units and a second wire grid unit , and each of the wire grid units comprises a plurality of wires spaced apart from each other, wherein the wire grid units are configured to respectively convert incident light beams to obtain polarized light beams; and a backlight module , and a down substrate , a liquid crystal layer , and a top substrate arranged on the backlight module in sequence, wherein the top substrate comprises a photo-resist layer and a top polarizer on the photo-resist layer , the down substrate comprises a thin film transistor (TFT) array and the polarizer , the polarizer is arranged on TFT array , the wire grid structure array is arranged between the dielectric layer and the backlight module , and the photo-resist layer comprises a plurality of pixels, wherein each of the pixels comprises at least one red sub-pixel (R), one green sub-pixel (G), one blue sub-pixel (B), and one white sub-pixel (W); each of the red sub-pixels (R), the green sub-pixels (G), and the blue sub-pixels (B) is arranged corresponding to one first wire grid unit ; each of the white sub-pixels (W) is arranged corresponding to one second wire grid unit ; wherein wire grid periods and duty cycle ratios of the first wire grid unit and the second wire grid unit corresponding to the red sub-pixel (R), the green sub-pixel (G), the blue sub-pixel (B), and the white sub-pixel (W) are configured such that a white point color coordinate composited by the red sub-pixel (R), the green sub-pixel (G), and the blue sub-pixel (B) and a white point color coordinate of the white sub-pixel (W) are matched. a polarizer comprising a dielectric layer and a wire grid structure array arranged on the dielectric layer , wherein the wire grid structure array comprises a plurality of wire grid structures , each of the wire grid structures comprises wire grid units consisting of three first wire grid units and a second wire grid unit , and each of the wire grid units comprises a plurality of wires spaced apart from each other, wherein the wire grid units are configured to respectively convert incident light beams to obtain polarized light beams; and a backlight module , and a down substrate , a liquid crystal layer , and a top substrate arranged on the backlight module in sequence, wherein the top substrate comprises a photo-resist layer and a top polarizer on the photo-resist layer , the down substrate comprises a thin film transistor (TFT) array and the polarizer , the polarizer is arranged on TFT array , the wire grid structure array is arranged between the dielectric layer and the backlight module , and the photo-resist layer comprises a plurality of pixels, wherein each of the pixels comprises at least one red sub-pixel (R), one green sub-pixel (G), one blue sub-pixel (B), and one white sub-pixel (W); each of the red sub-pixels (R), the green sub-pixels (G), and the blue sub-pixels (B) is arranged corresponding to one first wire grid unit ; each of the white sub-pixels (W) is arranged corresponding to one second wire grid unit ; wherein wire grid periods and duty cycle ratios of the first wire grid unit and the second wire grid unit corresponding to the red sub-pixel (R), the green sub-pixel (G), the blue sub-pixel (B), and the white sub-pixel (W) are configured such that a white point color coordinate composited by the red sub-pixel (R), the green sub-pixel (G), and the blue sub-pixel (B) and a white point color coordinate of the white sub-pixel (W) are matched. <EOS>