a substrate;

a pixel driving circuit disposed on the substrate, wherein the pixel driving circuit comprises a plurality of driving sub-circuits; and

a pixel layer disposed on the substrate, wherein the pixel layer comprises pixel units arranged in an array, each of the pixel units comprises a red pixel, a green pixel, a first blue pixel, and a second blue pixel; each of the driving sub-circuits is in one-to-one correspondence with one color pixel, and the driving sub-circuits are used to drive a corresponding color pixel to light up, and a light transmission band of the first blue pixel is different from a light transmission band of the second blue pixel;

wherein in a first display mode, the pixel driving circuit drives the red pixels, the green pixels, and the first blue pixels to light up; or, in a second display mode, the pixel driving circuit drives the red pixels, the green pixels, and the second blue pixels to light up;

wherein an irradiance of wavelengths within a preset intensity range of allowable transmission wavelengths corresponding to blue light is less than or equal to 20% of an irradiance of the allowable transmission wavelengths corresponding to the blue light.