| Summary: | 碩士 === 國立成功大學 === 機械工程學系碩博士班 === 96 === In order to improve the quality of light-guide plate and to reduce the cost, the purpose of this research is to discuss the design and production of light-guide plate, which is made of hard and soft polymer materials. In case of hard light-guide plate, the microstructures formation on the PMMA plate of upper surface made by photolithography technology was different from conventional V-cut or printing method. The adjusting of shape, size and exposure of mask can change the appearance of microstructures. The uniformity in light-guide plate sample using one diffusive sheet and two crossed BEF increase about 82% ~ 89 %. This uniformity is higher 2~9 percentage than reference of the commercial products in the same measurement condition (figure 4-29, 4-30). Brightness in multiple sample is higher 3~10 percentage than reference of the commercial products in the same measurement condition (figure 4-35, 4-37). Also the LIGA-Like process was use to produce metal model products, it could be produce in bulk, as far suitable for commercial purpose. In case of soft light-guide plate, CO2 laser was used to ablation optical fibers clad for scattering of light in the light-guide plate. Furthermore, the light-guide plate has slant microstructures so that the light emitting angle can be modify. The final design of light-guide plate is flexible that with 80.1 % uniformity and 77.6 % of efficiency, and can apply to display or light source that are flexible. Furthermore, light-guide plate can be designed by the variation of microstructures angle for special purpose, such as wide-view-angel and bi-view-angle LCDs.
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