Display panel and display device

A display panel, comprising:

• a first substrate;
• a second substrate, disposed oppositely to the first substrate;
• a liquid crystal layer, disposed between the first substrate and the second substrate;
• a first optical film, disposed on a side of the first substrate opposite to the liquid crystal layer, the first optical film comprising a plurality of nanoscale grooves and being configured to split a white light incident on the first optical film into a plurality of monochromatic lights with different colors;
• and
• a black matrix pattern, disposed between the first substrate and the liquid crystal layer,
• wherein the first optical film and the black matrix patter are located on a same side of the liquid crystal layer.