Display substrate, display panel and display device

A display substrate, comprising:

• a color filter layer, comprising a display sub-pixel and a dummy sub-pixel, the display sub-pixel being located in a display region of a first base substrate, the display sub-pixel comprising a first display sub-pixel, a second display sub-pixel, a third display sub-pixel, and a fourth display sub-pixel, colors of emitted light of the first display sub-pixel, the second display sub-pixel, the third display sub-pixel, and the fourth display sub-pixel being different from each other;
• the dummy sub-pixel being located in a periphery region of the first base substrate, the periphery region being at least located at one side of the display region, the periphery region comprising a dummy region close to the display region and an edge region away from the display region, the dummy sub-pixel being located in the dummy region, the dummy sub-pixel comprising a first dummy sub-pixel, a second dummy sub-pixel, a third dummy sub-pixel, and a fourth dummy sub-pixel, materials of the first dummy sub-pixel, the second dummy sub-pixel, the third dummy sub-pixel, and the fourth dummy sub-pixel being the same as materials of the first display sub-pixel, the second display sub-pixel, the third display sub-pixel and the fourth display sub-pixel, respectively;
• and
• a spacer, comprising a plurality of first spacers and a plurality of second spacers, the plurality of first spacers being located in the periphery region, the plurality of second spacers being located in the display region,
• wherein the first display sub-pixel comprises a red sub-pixel, the second display sub-pixel comprises a green sub-pixel, the third display sub-pixel comprises a blue sub-pixel, and the fourth display sub-pixel comprises a white sub-pixel.