Study of the Dual V- Cut Light Guide Plate for LCD Back Light Module

• Main Authors: Chen,Yung-Shou, 陳永壽
• Other Authors: Hsu , Ray-Quan
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/87414336305423169834

碩士 === 國立交通大學 === 工學院精密與自動化工程學程 === 100 === ABSTRACT The manufacturing technology of LCD is gradually becoming more complex in recent years . The backlight structure consists of light guide plate , diffuser, prism sheet , and frame is the light source of TFT-LCD system. The back light unit is easy to make, but its cost accounted is very high, so it attracts large quantities of manufacturers to plunge into the relevant studies . Optical characteristics of LGP is determined by the micro-structure design. Using micro-structure to detour light from the total reflection of LGP can increase the light inject from light-emitting surface of LGP. The surface of the micro-structure and processes condition is correlated with the mold of the optical characteristics. Using optics simulation software ASAP to build and construct the V-CUT LGP optics module, one can analyze and discuss the effect of the variation of its structure parameter, such as V-groove degree(), V-groove depth(D), V-groove pitch(P) on the brightness enhancement . It was found from the result of experiment , relative to other structure parameter, that V-cut degree() influence the brightness enhancement the most, and have the best result on 90 degree.