| Summary: | 碩士 === 國立臺灣海洋大學 === 機械與機電工程學系 === 94 === The brightness of LCD is predominantly influenced by the light guide panel (LGP). In this thesis, the effect of the LGP thickness and the geometric aspects of the microstructures on the LGP on the luminance of the back light plate (BLP) is investigated. The study is conducted by employing both the computer simulation and experiments.
The optical analysis software TracePro, which is based on the Monte Carlo method, is used to analyze the optical behavior of the BLP. An optimal design of the LGP can be obtained by the computer simulation. Experimental work is also conducted to evaluate the reliability of the simulation. PMMA LGPs with pyramid microstructures are fabricated using the lithography and hot embossing techniques. The microstructures are examined using OM and SEM. The luminance of BLP is measured using the luminance meter.
The simulation results are in good agreement with the experimental works. It is found that a thinner LGP results in higher luminance of BLP, but has larger variation in the luminance distribution. An LGP with higher misconstrues yields higher magnitude but larger variation in luminance. Also, the results reveal that the luminance and its variation can be greatly improved by varying the sizes of microstructures over the LGP.
Key words：light guide panel, back light plate, luminance, TracePro
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