Display panel and display device

A display panel, comprising:

• a first substrate and a second substrate disposed oppositely and a liquid crystal layer disposed between the first substrate and the second substrate;
• a material of the liquid crystal layer comprises cholesteric liquid crystal;
• the display panel further comprises a microstructure optical film layer located on a side of the second substrate facing away from the first substrate;
• incident light is incident from a side of the microstructure optical film layer, reflected by the cholesteric liquid crystal, and then emerged from the microstructure optical film layer;
• and
• the microstructure optical film layer comprises a plurality of wedge structures;
• at least part of the wedge structures have different angles and sizes, so that light emerged from side view angles and with different emergent angles are adjusted to be emerged from a center view angle;
• wherein each wedge structure comprises:
• an inclined substructure and a horizontal substructure;
• an included angle between an inclined surface of the inclined substructure and a horizontal plane of the horizontal substructure is greater than 90 degrees and less than 180 degrees;
• wherein
• θ
• =
• arctan
• [
• sin
• ⁢
• θ
• Incidence
• -
• n
• film
• ⁢
• sin
• ⁢
• (
• arcsin
• ⁢
• (
• 1
• n
• film
• ⁢
• sin
• ⁢
• θ
• Emergence
• )
• )
• n
• film
• ⁢
• cos
• ⁡
• (
• arcsin
• ⁡
• (
• 1
• n
• film
• ⁢
• sin
• ⁢
• θ
• Emergence
• )
• )
• -
• cos
• ⁢
• θ
• Incidence
• ]
• θ is a complementary angle of the included angle between the inclined surface of the inclined substructure and the horizontal plane of the horizontal structure, θIncidence is an included angle between the incident light and a normal line of the display panel, θEmergence is an included angle between emergent light and the normal line of the display panel, nfilm is a refractive index of the wedge structure.