Color film substrate, display panel, display device and preparation method of display panel

The invention is applicable to the technical field of display devices, and provides a color film substrate, a display panel, a display device and a preparation method of the display panel; the color film substrate comprises a first substrate and a plurality of pixels; the plurality of pixels are arranged on one side, facing an array substrate, of the first substrate; and each pixel comprises a plurality of color resistance blocks with different colors, in the color resistance blocks, the wavelength of light with the same color as the color resistance blocks is lambda, the distance between the color resistance blocks and the array substrate is d, and the value of d of each color resistance block is increased along with the increase of the lambda value corresponding to the color resistance blocks. According to the color film substrate, the transmittance can be improved while the aperture opening ratio and the NTSC are not changed. 本申请适用于显示装置技术领域，提供了一种彩膜基板、显示面板、显示装置及显示面板的制备方法，所述彩膜基板包括：第一基板和多个像素，多个所述像素均设置于所述第一基板面