Patent ID: 8858056

Claim:
A light guide plate comprising: a plate body having an incident surface, a light-exiting surface being perpendicular to the incident surface and two side surfaces being perpendicular to both of the incident surface and the light-exiting surface, wherein the light-exiting surface including a reflecting area and a non-reflecting area, and the reflecting area is disposed at two ends of the light-exiting surface that are close to the side surfaces; a light-exiting prism structure mounted in the non-reflecting area and including a plurality of light-exiting strip-shaped prisms being parallel to each other, wherein a length direction of each of the light-exiting strip-shaped prisms is perpendicular to the incident surface and parallel to the side surfaces; and a reflecting prism structure mounted in the reflecting area of the light-exiting surface for reflecting light which travels close to the side surfaces back to the plate body, wherein the reflecting prism structure includes two plane mirrors and a plurality of reflecting strip-shaped prisms; the side surfaces of the plate body are parallel to a length direction of each of the reflecting strip-shaped prisms; the adjacent reflecting strip-shaped prisms are gradually varied in height-to-width aspect ratio, wherein the plane mirrors are close to the side surfaces and the reflecting strip-shaped prism are far away from the side surfaces, wherein the reflecting strip-shaped prism being close to the plane mirrors has a smaller height-to-width aspect ratio and the reflecting strip-shaped prism being far away from the plane mirrors has a larger height-to-width aspect ratio, wherein the height-to-width aspect ratio is a ratio of a height and a width of the reflecting strip-shaped prism, wherein the plane mirrors and the reflecting strip-shaped prisms are disposed on the same plane.