正交偏振3D显示系统的研究

【作者】 刘璞；

【导师】 黄子强；

【作者基本信息】 电子科技大学 ， 光学工程， 2012， 硕士

【摘要】 3D显示技术作为目前最炙手可热的显示技术，正在逐渐走进人们的生活。观众对临场感和现实感的追求，正是3D显示的制胜法宝，也是推动3D显示技术发展的源动力。而3D串扰又正是3D显示技术进入家庭和继续发展的最大制约。本课题围绕此中心从各方面分析了串扰产生的原因和过程，以及如何有效改善和消除3D串扰。（1）本文首先以人眼的双目视差以及双目视差产生的深度感知和立体视觉为基础提出了人眼对3D屏幕产生立体视觉效应的基本原理；并总结以上分析提出了实现3D立体显示必备的三个条件。（2）着重分析了3D串扰的形成原因和对3D显示画质的影响，提出了3D串扰度的定义、3D串扰度的测算原理、3D串扰光强的定义及其测算方法。将黑白模式3D串扰度的测算方法扩展到了灰灰模式3D串扰度的测算，更加符合现实中的实际使用习惯。（3）本文分析了基于TN-OWS(扭曲排列光波导开关，Twisted Nematic-OpticalWaveguide Switch)单元的偏振分光技术在背光调控模式下的抗串扰3D显示系统原理及其不足。并提出了一套以消除3D串扰为目的的无串扰偏光式3D显示系统，基于扫描模式的正交偏振3D显示系统。对此无串扰3D显示系统的基本结构和工作原理进行详细的介绍。本文重点分析了此无串扰3D显示系统消除3D串扰的过程和原理，对系统的核心部件TN副屏的器件设计思路以及所需驱动信号进行了分析和介绍。（4）本文还对液晶的电控双折射现象进行了推导，研究了TN型液晶盒的设计和制备工艺，选定材料制作出了实验用TN-OWS单元。进行TN-OWS单元的电光效应实验以验证TN-OWS作为基于扫描模式的正交偏振3D显示系统TN副屏的可行性，并对正交偏振3D显示系统的3D串扰问题进行了零电场正入射、不同电压正入射和视角特性的实验对比分析。更多还原

【Abstract】 Nowadays,3D display technology is gradually going into people’s life as thehottest display technology. Audience’s pursuit of high presence and sense of reality isnot only the weapon of3D display, but also the source of power for the development ofthe3D display technology. However,3D crosstalk is the greatest constraint ofintroducing the3D display technology into household and further development. Thisdissertation analyzes the causes and process of the3D crosstalk, and discusses how toreduce and eliminate the3D crosstalk effectively.(1) In this dissertation, we introduce the principles of how human eyes getthree-dimensional visual effect form the3D screen, which is based on thehuman eyes’ binocular parallax, the depth of perception and stereo vision. Wesum up the analysis above to propose three necessary conditions to achieve the3D stereoscopic display.(2) We analyze the causes of the3D crosstalk and the impact of the3D displayquality, and propose the definition of the3D crosstalk, calculation principle of3D crosstalk and the method to determine the3D crosstalk luminance. In thisdissertation, we extend the black and white mode3D crosstalk calculationmethod to gray-gray mode3D crosstalk estimation method which is moreconsistent with the real world.(3) In this dissertation, we analyzed the theory and shortcomings of the nocrosstalk polarized3D display system based on the backlight control mode.And we propose a no crosstalk polarized3D display system for the purpose ofeliminating the3D crosstalk: orthogonally polarized3D display system basedon the scan mode. Then we describe the basic structure and working principleof the no crosstalk3D display systems in detail. We analyzed the process andprinciples of the no crosstalk3D display system. After that, we analyze andintroduce the device design ideas and the required drive signal of the TNsub-display which is the core components of the orthogonally polarized3D display system based on the scan mode.(4) At last, we deduce the electricity controlled birefringence phenomenon of theliquid crystal, and study the design and preparation process of the TN typeliquid crystal cell. After that, we select the material to produce a TN type liquidcrystal cell for test. In the experiment, we use electro-optic effect experimentsof TN-OWS cell to verify the feasibility of the TN-OWS as the TN sub-displayof the orthogonally polarized3D display system based on the scan mode. Forthe3D crosstalk of orthogonally polarized3D display system, we compare andanalyze the experiment of zero electric field normal incidence, different voltagenormal incidence and viewing angle characteristics.更多还原