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 (120, 121) 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 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, one green sub-pixel, one blue sub-pixel, and one white sub-pixel; each of the red sub-pixels, the green sub-pixels, and the blue sub-pixels is arranged corresponding to one first wire grid unit; each of the white sub-pixels 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, the green sub-pixel, the blue sub-pixel, and the white sub-pixel are configured such that a white point color coordinate composited by the red sub-pixel, the green sub-pixel, and the blue sub-pixel and a white point color coordinate of the white sub-pixel 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 (120, 121) 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 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, one green sub-pixel, one blue sub-pixel, and one white sub-pixel; each of the red sub-pixels, the green sub-pixels, and the blue sub-pixels is arranged corresponding to one first wire grid unit; each of the white sub-pixels 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, the green sub-pixel, the blue sub-pixel, and the white sub-pixel are configured such that a white point color coordinate composited by the red sub-pixel, the green sub-pixel, and the blue sub-pixel and a white point color coordinate of the white sub-pixel are matched.