Patent ID: 8884858

Claim:
A liquid crystal display device, comprising: a liquid crystal panel; a first polarizer disposed at an upper side of the liquid crystal panel; a second polarizer disposed at a lower side of the liquid crystal panel; and a light path control film disposed at an outer side of the first polarizer and configured to redirect light transmitted through the liquid crystal panel at low angles of a viewing angle to minimize gray inversion at the low angles of the viewing angle, wherein the light path control film emits the light in two or more different directions of a lower viewing angle and in the front direction simultaneously, wherein the light path control film comprises a transparent substrate comprising: a plurality of triangular protruded patterns on an emitted surface of the light configured to emit the light in two or more different directions of the lower viewing angle, and a recessed flat surface formed among the triangular protruded patterns configured to emit the light in the front direction, wherein the triangular protruded patterns include at least two or more shapes, wherein each triangular pattern comprises an asymmetric prism, wherein the different shaped prisms redirect the light toward the two or more directions of the lower viewing angle different from each other, according to the inclination of each different shaped prism, and wherein light from the recessed flat surface formed among the prisms emits in a same direction as incident light.