Optical composite film, display panel, and display device

An optical composite film, comprising:

• a first optically-uniaxial optical film layer, comprising a plate-shaped portion and a plurality of refraction portions disposed on a side of the plate-shaped portion, wherein the plurality of refraction portions is selected from one type of camber columns and quadrangular prisms, and when the plurality of refraction portions is the camber columns, the refraction portion has a plurality of side surfaces, one of the plurality of side surfaces is an arc-shaped convex surface, and a side surface of the refraction portion away from the arc-shaped convex surface is laminated to the plate-shaped portion;
• and when the plurality of refraction portions is the quadrangular prisms, a side surface of the refraction portion is laminated to the plate-shaped portion;
• a second optically-uniaxial optical film layer, stacked on a side of the plate-shaped portion close to the refraction portion, wherein the plurality of refraction portions is accommodated in the second optically-uniaxial optical film layer, an extraordinary light refractive index of the first optically-uniaxial optical film layer is greater than an ordinary light refractive index of the second optically-uniaxial optical film layer, and a material of the first optically-uniaxial optical film layer is the same as a material of the second optically-uniaxial optical film layer;
• and
• a reflection grating film layer, disposed on a side of the second optically-uniaxial optical film layer away from the first optically-uniaxial optical film layer.