利用同步多曲面方法設計側光式方向性背光模組

Abstract

近年來由於環保意識抬頭，綠色環境(Green Environment)已被各個產業視為永續發展的重要議題，一般來說，基於Eco-Display對於背光模組的訴求，除了可使用LED做為背光模組的光源外，亦能藉由調控背光模組的出光角度，來增加面板出光後的利用率，而要做到控制背光的出光角度，通常會採用雙光源系統的方式，或是利用雙層液晶的結構來達到目的，但這些方式容易造成背光模組的光機架構繁複，故光源出光效率無法有效提升!

因此，本研究主要目的是基於側光式背光模組的機構，透過一層導光板的設計，配合上非成像曲面的設計方法，使得LED出光至導光板時能有效控制在特定角度內，進而達成方向性背光的目的!

Recently, green technologies have been taken as an important issue for the sustainable development due to environmental consciousness. In general, to fit the requirements of Eco-Display in terms of backlight modules, we use the LED as the source of backlight and modulate the viewing angles to increase the efficiency of outgoing rays from backlight. Conventional viewing angle modulation can be achieved by two ways, including a dual light source system and a dual liquid crystal layers design. But multiple optical structures make them face some problems about energy saving.

In this study, we take advantage of conventional side-it configuration, which enables viewing angle modulation by the design of simultaneous multiple surface lens and a light guide plate. The proposed mechanism would confine the viewing angles of backlight module to get the purpose of directional backlight.