反射薄板折合之新型輕薄導光裝置

顯示器產業是台灣目前重要的光電產業之ㄧ，而目前平面顯示器當中，又以液晶顯示器為主。因為液晶為非自發光材料，故需要另外的光源，使其能顯示影像；因此背光模組便成了液晶顯示器中相當重要的部份，且視市場需求發展出不同類型的背光模組。現今之側光式背光模組中的導光板，為藉由全反射原理將光導至整個面板，而再另外設計擴散點或是微結構的方式破壞全反射使出光面照度均勻化。但在本論文中，使用反射薄板折合之中空型的導光裝置，目的在於希望僅利用鏡面反射，便能導光以及使出光面均勻化，達到減輕整體背光模組之重量的目標，並期望能應用在大尺寸面板上。本論文先使用光學模擬軟體進行導光裝置的模擬設計，再依據設計結果做成實體模型並做量測。其量測結果顯示的確有達到減輕整體背光模組之重量的目標，但在亮度及均勻度方面仍需做進一步的優化。

關鍵字

背光模組；反射式導光裝置

並列摘要

Display devices is one of the most important part of current electro-optics industry, and liquid crystal display (LCD) shares the major portion of this market. Because liquid crystal is an non-emitting device, it requires additional light source to illuminate the image pattern. For this reason, back light unit (BLU) is an important part in LCD display and has several varieties depending on applications. The traditional light guide plate in backlight module of side edge type exploit total internal reflection to guide and distribute light over the whole screen, and dive the light out of the screen uniformly with well designed printed dot or microstructures pattern. In this article, novel light guide fully composed of reflective plate has been proposed as a light weight solution for backlight module of side edge type. Accompanying with the optical films used in existing backlight module, the uniformity of the prototype has shown the feasibility and potential for large screen application. We use the simulation soft to design the backlight module first, and make the prototype according to the simulation result. The weight of the prototype is thinner and lighter then the traditional one, but the luminance and uniformity is needed to optimize.