The present invention discloses a display panel and a display device. The display panel comprises: a cover plate, a first substrate and a second substrate stacked on top of one another; display functional stacked layers located between the first substrate and the second substrate, the display functional stacked layers having an image display region and an edge frame region; an isolation layer located between the first substrate and the cover plate, the isolation layer having a refractive index different from those of the first substrate and the cover plate, and wherein the first substrate is formed with a curved first light deflection surface at an edge thereof, the first light deflection surface being configured to deflect light from the edge portion of the image display region of the display functional stacked layers towards an edge of the cover plate, and the cover plate is formed with a curved second light deflection surface at the edge thereof, the second light deflection surface being configured to deflect light deflected by the first light deflection surface away from the edge of the cover plate. The display panel and the display device can achieve a display effect of narrowed edge frame or non-edge frame.