用于大尺寸显示器的防窥膜表面微结构设计  

Surface Microstructure Design of Privacy Film for Large⁃sized Displays

作　　者：李德华 胡亮 于宪书 LI Dehua;HU Liang;YU Xianshu(The 55th Institute of China Electronics Technology Group Corporation,Nanjing 210016,CHN)

机构地区：[1]中国电子科技集团公司第五十五研究所,南京210016

出　　处：《光电子技术》2024年第4期334-337,共4页Optoelectronic Technology

摘　　要：设计了一种用于大尺寸显示器的防窥膜。基于普通百叶窗型防窥膜的防窥原理,根据人眼观看显示器不同区域的视线角度来设计特定的遮光微结构外形,使观看者在固定位置观看时整个显示区域内的亮度基本一致,解决了普通防窥膜应用于大尺寸显示器时边缘区域亮度过低的问题,同时不影响防窥效果。使用LightTools软件对大尺寸防窥膜进行了视角仿真,结果表明:人眼观察显示器边缘区域的亮度是中心区域亮度的94.9%,与普通防窥膜相比亮度提升了159.2%。A privacy film for large-sized displays was designed.Based on the anti-peeping princi-ple of conventional louver type privacy film,a specific light blocking microstructure shape was de-signed according to the line of sight angle of hume eyes watching different areas of the display,so that the brightness of the whole display area was basically the same when the viewer watched in a fixed po-sition.It could solve the problem that the brightness of the edge area was too low when the convention-al privacy film was applied to the large-sized display,and did not affect the anti-peeping effect.Visual angle simulation of large-sized privacy film was conducted using LightTools.The results showed that the brightness of the edge area was 94.9%of that of the center area,and the brightness was 159.2%higher than that of the conventional privacy film.

关 键 词：大尺寸显示器 防窥膜 微结构 

分 类 号：TN141.9[电子电信—物理电子学]