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科技與工程學院
機電工程學系
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學位論文
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Browsing 學位論文 by Subject "3D image"
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雷射燒蝕導光板應用於大尺寸高指向性之背光模組設計
(
2014
)
曾立偉
;
Tseng, Li-Wei
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本論文研究目標為利用雷射燒蝕導光板設計大尺寸高指向的背光模組。高指向式背光模組可應用於指向時序式3D立體顯示,其優點有不會降低液晶面板的解析度與低能量耗損。我們使用CO2雷射打在材料為PMMA的導光板上,雷射的能量大小影響結構形狀。使用低能量的雷射製作出的表淺結構導光板,其出光十分集中在遠離法線的區域。由於結構細微,在重疊後不破壞出光集中度的條件下設計雙層雙邊入光之背光模組。以Lighttools進行建模與模擬。經過設計之背光模組,具有兩組偏離法線的出光強度峰值,在模組上方加上經過設計的多段逆稜鏡膜,便可得到具有兩股夾法線較小的出光峰值之背光模組,其出光峰值分別在5度與-4度,半高全寬分別為13與10.5度,串擾為5%與7%。出光面長480 mm寬74 mm,並排後可應用於20吋以上指向式立體顯示功能的電視或顯示器使用。
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