LIGHT GUIDE PLATE, BACKLIGHT MODULE, AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

A light guide plate includes an optically effective portion and an optical coupling portion adjoining the optically effective portion. The optically effective portion includes a first bottom surface, a light output surface opposite to the first bottom surface, and a side surface connected between the first bottom surface and the light output surface. The optical coupling portion includes a second bottom surface, a first light incident surface opposite to the side surface, a second light incident surface, a first connecting surface, and a second connecting surface. The second bottom surface is coplanar with the first bottom surface. The second light incident surface extends from the first light incident surface away from the side surface. The first connecting surface extends from the second light incident surface toward the side surface. The second connecting surface is connected between the first connecting surface and the light output surface.

主权项

1. A light guide plate comprising:
a rectangular plated optically effective portion comprising a first bottom surface, a light output surface opposite to the first bottom surface, and a side surface perpendicularly interconnected between the first bottom surface and the light output surface; and an optical coupling portion adjoining to the optically effective portion, the optical coupling portion comprising a second bottom surface, a first light incident surface, a second light incident surface, a first connecting surface, and a second connecting surface, the second bottom surface being coplanar with the first bottom surface, the first light incident surface being opposite to and parallel with the side surface, the second light incident surface perpendicularly extending from the first light incident surface along a direction away the side surface, the second light incident surface and the second bottom surface located at opposite ends of the first light incident surface, the first connecting surface extending from the second light incident surface along a direction toward the side surface, the first connecting surface and the first incident surface located at opposite sides of the second light incident surface, and the second connecting surface interconnected between the first connecting surface and the light output surface.