LIGHT GUIDE METHOD AND ITS SYSTEM, AND BACK LIGHT ASSEMBLY HAVING THE SAME AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a light guide method and its system, and a back light assembly having the same, and a liquid crystal display device.

SOLUTION: A light transmission plate 120 includes a light incident surface which receives provision of light, a light reflection surface which borders upon the first side of the light incident surface and a light exit surface which borders upon the second side of the light incident surface. A plurality of prisms having a round shape in section are formed on the light reflection surface which emits the light by guiding the route of the light and is formed with a plurality of prisms in proximity to the light incident surface. As the light is made incident through the light reflection surface, the light is diffused and transmitted through the prisms having the round shape in the section and is emitted through the light exit surface. A light luminance control section is arranged in the upper part of the light transmission plate and controls the luminance of the light guided by the light transmission plate and provides a liquid crystal panel with the light.

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