标题: 主动式液晶透晶阵列于3D显示及3D影像撷取之应用
Active Liquid Crystal Lens Array for 3d-Dsiplay and 3d-Capturing Application
作者: 黄乙白
Yi-Pai Huang
国立交通大学光电工程学系(所)
关键字: 主动式阵列;液晶透镜;立体显示;立体深度撷取;2D/3D切换;Active array;Liquid Crystal lens;Auto-stereoscopic Display;Stereo depth capturing;2D/3D switching
公开日期: 2012
摘要: 液晶透镜一直以来都是被动式驱动结构,亦即没有半导体层当作主动式的闸极(Gate) 来当作开关的作用,被动式结构在单一透镜元件时并不会受到限制,然而一但需要阵列 式透镜应用时就会有相当多的局限;因此本计昼主要目的是开发[主动式液晶透镜阵列] 结构,并将其应用于3D立体显示以及3D立体影像撷取两大方面。

主动式液晶透镜阵列将使用半导体层同时当作闸极与分压元件,在闸极电压驱动 时,元件导通后会将电荷送至液晶透镜之中心电极,在闸极关闭时,该半导体层因其高 阻抗特性,可成为达到分压的效果,使透镜的电场分布呈现渐变的透镜效果。

因为是主动式选择的透镜阵列,将其制作成柱状透镜阵列应用于3D显示技术时, 便可同时达到2D/3D切换、3D旋转切换、以及区域化3D显示等功能;另外,当作成 环状透镜阵列时,也可进一步应用于3D立体影像撷取,将液晶透镜阵列与相机镜头结 合,可区域化独立控制各个透镜焦距,并聚焦在不同在深度上,藉由后续的影像处理可 简单的撷取出拍摄影像的深度资讯,并可轻易的达到2D/3D影像撷取的切换;而除了一 般相机应用外,更可应用于微镜头(如:立体内视镜)上来撷取立体深度资讯。

因此,主动式液晶透镜阵列不但在学术上是首度被提出的液晶透镜结构,其未来亦 有机会可提供更多的实际应用价值。
Liquid crystal lens is still a “passive: device in current researches, which means it doesn’t have a semiconductor layer as an active Gate. A passive component can fit the application for single element, however, it will be limited when applied on array system. Therefore, the main object of this project is to develop “Active Liquid Crystal Lens Array”,and apply the array structure for 3D auto-stereoscopic display and 3D depth capturing.

The active LC array will utilize a semiconductor layer as gate and voltage sharing layer. When gate-on, it will be conducted to power-on the central electrode of LC lens. When Gate-off, the semiconductor layer will be perform as a high resistance layer to make the electric field as gradient distributions. Finally, a LC lens can be formed.

Due to the array is active driving, when it combine with 3D display with lenticular shape. The 3D display can be 2D/3D switchable, 3D rotatable, and 3D localizable. Additionally, when designing as circular lens array, it can be put in front of a camera to have 3D depth and image capturing function.

Therefore, the active liquid crystal lens array is not only the first LC-lens structure had been ever proposed, but also prospect many future applications.
官方说明文件#: NSC101-2221-E009-120-MY3
URI: http://hdl.handle.net/11536/98839
https://www.grb.gov.tw/search/planDetail?id=2635826&docId=396428
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