Light guide assembly, backlight source and display device

Abstract

A light guide assembly, a backlight source and a display device are provided. The light guide assembly includes: a first medium layer including a first light incidence face and a first light exit face opposed to each other; at least one triangular prism unit on the first light exit face, each triangular prism unit including a second light incidence face, a second light exit face and a non-exit face, the second light incidence face being in contact with the first light exit face; and a second medium layer covering the second light exit face, refractive index n2 of each triangular prism unit is greater than refractive index n3 of the first medium layer and refractive index n1 of the second medium layer; and wherein an angle A between the second light incidence face and the second light exit face meets: α+β−10°<A<α+β, where α=arcsin(n1/n2) and β=arcsin(n3/n2).

Dependencies are inferred from the claim text.