Display panel and driving method thereof, and display device

The invention discloses a display panel and a driving method thereof, and a display device. The display panel comprises: a display substrate, wherein light emitted from a light exiting surface of thedisplay substrate is linearly polarized light; a functional liquid crystal box is located on one side of the light exiting surface of the display substrate, and comprises a first substrate, a liquid crystal molecule layer and a second substrate; a functional electrode layer is located on the side, close to the liquid crystal molecule layer, of the first substrate, and comprises a first electrode group and a second electrode group which are arranged in a first direction in a staggered manner; the first electrode group and the second electrode group each comprise at least two electrodes; a lighttransmittance axis of a functional polarization structure is perpendicular to a polarization direction of the light emitted by the display substrate; the display panel comprises a first display state; in the first display sta