带有圆台的超薄直下式LED背光设计  

Design of Ultra-Thin Direct-Down LED Backlight With the Conical Table

作　　者：王先盛 朱向冰[1,2] 吴康康 高腾 WANG Xian-sheng;ZHU Xiang-bing;WU Kang-kang;GAO Teng(Optoelectronic Technology Research Center,Anhui Normal University,Wuhu 241000,China;Key Laboratory of Optoelectronie Materials Science and Technology of Anhui,Wuhu 241000,China;College of Science,China University of Petroleum,Qingdao 266580,China)

机构地区：[1]安徽师范大学光电技术研究中心,安徽芜湖241000 [2]安徽省光电材料科学与技术重点实验室,安徽芜湖241000 [3]中国石油大学理学院,山东青岛266580

出　　处：《光学与光电技术》2018年第5期26-32,共7页Optics & Optoelectronic Technology

摘　　要：针对直下式LED背光模组厚度大的缺点,设计了一种带有圆台的超薄直下式LED背光模组。通过调整圆台斜面角度和底面直径,来改变LED灯珠光强极大处的指向和位置,降低混光高度。利用圆台、圆锥、反射隔板构建正六边形照明单元,用TracePro软件模拟不同的排列间距、混光高度、圆锥尺寸对均匀度的影响。结果表明:当排列间距为26mm,混光高度为16mm,圆锥高度为10mm时,均匀度达到了94.27%。该背光模组在确保高均匀度的同时极大地降低了厚度,为直下式背光模组的轻薄化提供了理论依据和研究方向。In order to solve the problems of large thickness of traditional direct-down type LED backlight, an ultra-thin direct-down LED backlight model with conical table is proposed. By adjusting the angle of the bevel and the diameter of the bottom of the conical table, the direction and position of maximum light intensity of the LED are changed, and the height of light mixing are reduced. The hexagonal lighting units are made of conical table, cones, and reflective baffles. The simulation of the effect on uniformity of different arrangement pitch, mixed light height, and cone size is performed on TracePro. The results show that when the arrangement pitch is 26 mm, the mixed light height is 16 mm, and the cone height is 10 mm, the uniformity reaches 94. 27%. The backlight module greatly reduces the thickness while ensu- ring high uniformity, and provides a theoretical basis and research direction for the light and thin direct-down backlight.

关 键 词：光学设计 液晶显示器 直下式背光模组 超薄 圆台 厚度 

分 类 号：O439[机械工程—光学工程]