A display panel comprising a plurality of pixel units, the display panel comprising: a first substrate and a second substrate opposite to each other, a side of the first substrate facing away the second substrate being a light exiting side of the display panel, and a side of the second substrate facing away the first substrate being a light incident side of the display panel; a first light-shielding layer on the first substrate, the first light-shielding layer comprising a plurality of first openings as light-transmitting regions for the pixel units, and a liquid crystal layer between the first substrate and the second substrate, wherein each pixel unit of the plurality of pixel units comprises a first electrode, a second electrode and a lens, the lens is arranged on a side of the first substrate facing the second substrate and extends toward the second substrate, wherein the lens comprises a light incident surface and a light exiting surface, and the light incident surface of the lens is in direct contact with the liquid crystal layer, wherein the first electrode and the second electrode are configured to form an electric field in response to receiving a voltage, the electric field is configured to drive liquid crystal molecules of the liquid crystal layer to deflect so as to change a ratio of transmission and reflection at the light incident surface of the lens of linearly polarized light if incident onto the liquid crystal layer, thereby being configured to change a ratio of the linearly polarized light exiting from a light-transmitting region of the light-transmitting regions and the linearly polarized light absorbed by the first light shielding layer, wherein an initial direction of a long axis of the liquid crystal molecules in the liquid crystal layer in the absence of an electric field is parallel to the first substrate, a refractive index n 1 of the lens is equal to n O, wherein n O is an o-light refractive index of liquid crystal molecules in the liquid crystal layer, and characterized in that an angle α between a tangent plane for any point on the light incident surface of the lens and the light exiting surface of the lens satisfies α ≥ arcsin n 1 n e, wherein n 1 is the refractive index of the lens, and n e is an e-light refractive index of liquid crystal molecules in the liquid crystal layer. a first substrate and a second substrate opposite to each other, a side of the first substrate facing away the second substrate being a light exiting side of the display panel, and a side of the second substrate facing away the first substrate being a light incident side of the display panel; a first light-shielding layer on the first substrate, the first light-shielding layer comprising a plurality of first openings as light-transmitting regions for the pixel units, and a liquid crystal layer between the first substrate and the second substrate, wherein each pixel unit of the plurality of pixel units comprises a first electrode, a second electrode and a lens, the lens is arranged on a side of the first substrate facing the second substrate and extends toward the second substrate, wherein the lens comprises a light incident surface and a light exiting surface, and the light incident surface of the lens is in direct contact with the liquid crystal layer, wherein the first electrode and the second electrode are configured to form an electric field in response to receiving a voltage, the electric field is configured to drive liquid crystal molecules of the liquid crystal layer to deflect so as to change a ratio of transmission and reflection at the light incident surface of the lens of linearly polarized light if incident onto the liquid crystal layer, thereby being configured to change a ratio of the linearly polarized light exiting from a light-transmitting region of the light-transmitting regions and the linearly polarized light absorbed by the first light shielding layer, wherein an initial direction of a long axis of the liquid crystal molecules in the liquid crystal layer in the absence of an electric field is parallel to the first substrate, a refractive index n 1 of the lens is equal to n O, wherein n O is an o-light refractive index of liquid crystal molecules in the liquid crystal layer, and characterized in that an angle α between a tangent plane for any point on the light incident surface of the lens and the light exiting surface of the lens satisfies α ≥ arcsin n 1 n e, wherein n 1 is the refractive index of the lens, and n e is an e-light refractive index of liquid crystal molecules in the liquid crystal layer.