DOUBLE-VISION BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

In the embodiments of the invention, a double-vision backlight module and a LCD device are provided. In the embodiments of the present invention, a light-splitting prism sheet is disposed between a diffuser plate and a LCD panel for splitting light. The prism sheet is arranged such that a side having prisms thereon of the prism sheet faces the LCD panel, and thereby splitting the light and enhancing the brightness, and eventually enhancing the brightness in both left and right view areas and at the same time reducing the brightness in the central-interference area, and thus improving the double-vision effect.

主权项

1. A double-vision backlight module, comprising a parallel backlight source and a diffuser plate, wherein the double-vision backlight module further comprises a prism sheet disposed between the diffuser plate and a LCD panel, for splitting light incident from the parallel backlight source and converging the split light into the left and/or right view areas, wherein,
the prism sheet is arranged such that a side having the prisms thereon of the prism sheet faces the LCD panel, axes of the prisms are vertical to a horizontal line connecting the left and right view areas, and a prism base angle of the prism sheet is smaller than arcsin(1/n), wherein n is the refractive index of the prisms.