单片LCoS时序彩色化显示的研究
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摘要
在信息爆炸的科技高速发展时代,显示技术以直观快速和准确清晰传播信息的能力广受人们青睐。现在显示技术已经成为和人们生活息息相关的重要技术之一,是人们获取信息的重要途径和手段之一。与此同时,人们对显示技术的要求也越来越高,各种显示技术应运而生。可以说,21世纪的显示技术将是大尺寸平板显示和微型显示系统流行和发展的黄金时期。
在微显示方面,硅基液晶微显示器(LCoS:Liquid Crystal on Silicon)作为一种新型微显示器件,是CMOS半导体集成电路技术和液晶显示技术相结合的产物,具有小体积、高分辨率、高解析度、高有效光利用率和低功耗等优点。因此,LCoS广泛应用于便携式投影显示系统和近目显示系统中。本论文就是基于LCoS在便携式微显示投影系统中的应用,对LCoS显示器件原理特性、彩色化技术以及投影系统的参数特性进行前期调研,以时序彩色化显示方案实现了SVGA分辨率、180Hz主频、256级灰度全彩色视频投影显示。
论文采用单片式LCoS搭建了三基色显示系统,选择高饱和度和高亮度的LED作为三基色光源,相较于传统的EBU三基色系统,其投影图像亮度高,色彩丰富且更容易实现色域扩展。为使投影图像接近标准彩色显示,通过配比和白场点计算方法算出的时间配比,并实施了两种方式。
LCoS本质上属于液晶显示技术,论文重点论述了液晶的非线性电光特性,伽马校正原理以及分析比较了建成的校正方案,并最终选择了数字查表法来对LCoS的非线性电光特性进行伽马校正,得到了较为理想的图像再现效果。
In the information explosion era of science and technology, fast and precise display technology for clear and intuitive ability to disseminate information were widely favored by people. Now display technology is all over in people's lives, which have become an important technology for people to obtain information. At the same time, people are more and more serious with the display technology, as a result, various display technologies have emerged. In the 21st century It is the golden age for large flat-panel displays and micro-display system and development of the golden age of pop.
As a new micro-display devices,LCoS(liquid crystal on silicon) is a combination of CMOS integrated circuit technology semiconductor and liquid crystal display technology. Because of the various advantages such as small size, high resolution, high-efficient light utilization and low dissipation, LCoS micro-display systems are widely used in portable display systems and Near-Eye display systems. This paper is based on the application of LCoS display in portable microdisplay projection system, including the research work about the working principle and colorization scheme of the LCoS display device during the earlier period of the project and realizing the SVGA resolution,180Hz fresh rate.256-gray scale tricolor video projection display by the single panel LCoS display which was set up in this project.
This paper is based on single-panel tricolor LCoS display system with high saturation and high brightness LED as light source. Compared with the traditional display with EBU tricolor, the projected image with the new display is more bright, more colorful and easier to achieve color gamut extension. In order to make the projected image close to the standard color display, the display time of the three primary color is analyzed by the method of white balance.and implemented in two ways.
LCoS is essentially a liquid crystal display technology. This paper focused on the non-linear electro-optic properties of liquid crystal and the methods of gamma correction. Finally a practical gamma correction is developed based on normal scheme.by inserting an LUT gamma correction block in the hardware design program.
在微显示方面,硅基液晶微显示器(LCoS:Liquid Crystal on Silicon)作为一种新型微显示器件,是CMOS半导体集成电路技术和液晶显示技术相结合的产物,具有小体积、高分辨率、高解析度、高有效光利用率和低功耗等优点。因此,LCoS广泛应用于便携式投影显示系统和近目显示系统中。本论文就是基于LCoS在便携式微显示投影系统中的应用,对LCoS显示器件原理特性、彩色化技术以及投影系统的参数特性进行前期调研,以时序彩色化显示方案实现了SVGA分辨率、180Hz主频、256级灰度全彩色视频投影显示。
论文采用单片式LCoS搭建了三基色显示系统,选择高饱和度和高亮度的LED作为三基色光源,相较于传统的EBU三基色系统,其投影图像亮度高,色彩丰富且更容易实现色域扩展。为使投影图像接近标准彩色显示,通过配比和白场点计算方法算出的时间配比,并实施了两种方式。
LCoS本质上属于液晶显示技术,论文重点论述了液晶的非线性电光特性,伽马校正原理以及分析比较了建成的校正方案,并最终选择了数字查表法来对LCoS的非线性电光特性进行伽马校正,得到了较为理想的图像再现效果。
In the information explosion era of science and technology, fast and precise display technology for clear and intuitive ability to disseminate information were widely favored by people. Now display technology is all over in people's lives, which have become an important technology for people to obtain information. At the same time, people are more and more serious with the display technology, as a result, various display technologies have emerged. In the 21st century It is the golden age for large flat-panel displays and micro-display system and development of the golden age of pop.
As a new micro-display devices,LCoS(liquid crystal on silicon) is a combination of CMOS integrated circuit technology semiconductor and liquid crystal display technology. Because of the various advantages such as small size, high resolution, high-efficient light utilization and low dissipation, LCoS micro-display systems are widely used in portable display systems and Near-Eye display systems. This paper is based on the application of LCoS display in portable microdisplay projection system, including the research work about the working principle and colorization scheme of the LCoS display device during the earlier period of the project and realizing the SVGA resolution,180Hz fresh rate.256-gray scale tricolor video projection display by the single panel LCoS display which was set up in this project.
This paper is based on single-panel tricolor LCoS display system with high saturation and high brightness LED as light source. Compared with the traditional display with EBU tricolor, the projected image with the new display is more bright, more colorful and easier to achieve color gamut extension. In order to make the projected image close to the standard color display, the display time of the three primary color is analyzed by the method of white balance.and implemented in two ways.
LCoS is essentially a liquid crystal display technology. This paper focused on the non-linear electro-optic properties of liquid crystal and the methods of gamma correction. Finally a practical gamma correction is developed based on normal scheme.by inserting an LUT gamma correction block in the hardware design program.
引文
[1]Kakn FJ. Projection display technologies for the millennium, SPIE,2000, Vol. 3954:12-18;
[2]CRT背投成像原理[J].电器评价,2003年03期：pp32-35；
[3]熊静懿,贺银波,曾广杰等.液晶投影显示技术发展现状[J],光学仪器,2001,23(4)：pp37-48；
[4]Zheng Zhenrong. Color-Separating Multilayer Systems Used for TFT-LCD Projeetors,光子学报,2002 31(8)：pp1016-1019；
[5]陈吉,孙宁,付强.液晶光阀显示系统的研究[J],科技创新导报,2008 NO.02：pp10；
[6]Kwak Y, MacDonaldL. Charaeterisation of a desktop LCD Projector Displays, 2000 21(2):pp 179-194;
[7]SamPsell J B. An overview of Texas Instrurnenis Digital Micromirror Device (DMD) and Its Application to Projeetion Displays(J), Society for information Display,1993(24):pp1012-1015;
[8]李定川.DLP投影机的使用及技术特点[J],实用影音技术,2004年第2期：pp54-56；
[9]刘敏CRT、LCD、 DLP、LCoS结构、原理、性能比较[J],家电检修技术,2005年01S期：pp26-27；
[10]Dennis F.Vanderwerf. Applied Prismatic and Reflective Optics(M),07 July2010: pp165-177;
[11]夏常荣.LCoS投影技术及其市场分析[J],真空电子技术,2002年第2期：pp63-65；
[12]Youri Meuret, Patrick De Visschere. Optical engines for high-performance liquid crystal on silicon projection systems, Optical Engineering, Vol.42 No.12, December 2003:pp3551-3556;
[13]刘浩.LCoS光引擎中分光合光部分的技术分析[J],现代显示,2008,92(9)：pp45-48；
[14]赵汉鼎.LCoS投影显示现状与我国LCoS产业的发展[J],新显示时代,2007No.11(Sum No.308):pp49-55;
[15]代永平.LCoS微显示技术[J],液晶与显示,2008年8月,第24卷第4期：pp471-476；
[16]Hsu Rong, Liu Peiyuan. New challenges in LCoS Technologies Lasers and Electro-Optics Society(J),2004,1(11):pp106-107;
[17]夏常荣.LCoS投影技术及其市场分析[J],国际光电与显示,2002 No.4：pp35-39；
[18]刘颖,池勇,陈守龙,蔡振龙.LED微投影显示技术发展现况与展望[D],2009全国半导体照明技术与应用论坛论文文集：pp104-108；
[19]梁静秋.微显示器件的研究进展[J],光机电信息,2010第27卷第12期：pp21-27；
[20]张永利,周晶晶,耿卫东,代永平,孙钟林.新型近眼显示系统的分析与设计(J),光电子技术,2004年6月,第24卷第2期：pp125—128；
[21]代永平,华强,孙钟林.基于LCoS的微型显示器[J].电视技术,2004：pp55-57：
[22]代永平,孙钟林,耿卫东.硅基微显示技术[J],光电子技术,2002,22(4)：pp192-197；
[23]金伟其,胡威捷,辐射度光度和色度及其测量[M],北京理工大学出版社,2004；
[24]汤顺清.色度学[M],北京理工大学出版社出版,1990.6；
[25]耿卫东,代永平,任立如,孙钟林.场时序彩色液晶显示器技术[J],半导体光电,2002年第23卷第5期：pp299-300；
[26]秦亚杰.LCoS微显示技术研究与设计[D]：pp7-10；
[27]Jeffrey A. Shimizu.适用于背投高清晰度电视的卷进式彩色LCoS[J].现代显示.2001(4)：pp27-30；
[28]章毓晋.图像工程上册-图像处理[M],清华大学出版社；
[29]应根裕,胡文波,邱勇.平板显示原理[M],人民邮电出版社,2002；
[30][日]大石严等主编,白玉林.王毓仁译.显示技术基础[M],2003年04月第1版：pp177-180；
[31]Martin Kykta高清显示中的伽马校正、亮度和明视度探索[J],现代显示,2009年12月：pp13-18；
[32]张兴义.电子显示技术[M],北京理工大学出版社,1998；
[33]魏永毅.液晶电光非线性效应校正技术研究[D]：pp13-20；
[34]耿卫东,刘会刚,刘艳艳,商广辉,金庆,胡思捷,全治臻.场序彩色LCoS智能伽玛矫正电路设计[J],液晶与显示,2010年10月,第25卷第5期：pp713-717；
[35]金笑丛.单片式LCoS视频显示系统的伽马校正[D]：pp39-41；
[36]李鸿安,戴青松,武沛俊.一种六基色投影显示技术[J].电子产品世界,2009 05：pp125-127；
[37]李熹霖.LED全彩色显示屏的白平衡和色均匀问题[J],现代显示,2004年第2期：pp15-16；
[38]邹静燕.单片LCoS四基色时序彩色显示的研究[D]：pp57-60；
[2]CRT背投成像原理[J].电器评价,2003年03期：pp32-35；
[3]熊静懿,贺银波,曾广杰等.液晶投影显示技术发展现状[J],光学仪器,2001,23(4)：pp37-48；
[4]Zheng Zhenrong. Color-Separating Multilayer Systems Used for TFT-LCD Projeetors,光子学报,2002 31(8)：pp1016-1019；
[5]陈吉,孙宁,付强.液晶光阀显示系统的研究[J],科技创新导报,2008 NO.02：pp10；
[6]Kwak Y, MacDonaldL. Charaeterisation of a desktop LCD Projector Displays, 2000 21(2):pp 179-194;
[7]SamPsell J B. An overview of Texas Instrurnenis Digital Micromirror Device (DMD) and Its Application to Projeetion Displays(J), Society for information Display,1993(24):pp1012-1015;
[8]李定川.DLP投影机的使用及技术特点[J],实用影音技术,2004年第2期：pp54-56；
[9]刘敏CRT、LCD、 DLP、LCoS结构、原理、性能比较[J],家电检修技术,2005年01S期：pp26-27；
[10]Dennis F.Vanderwerf. Applied Prismatic and Reflective Optics(M),07 July2010: pp165-177;
[11]夏常荣.LCoS投影技术及其市场分析[J],真空电子技术,2002年第2期：pp63-65；
[12]Youri Meuret, Patrick De Visschere. Optical engines for high-performance liquid crystal on silicon projection systems, Optical Engineering, Vol.42 No.12, December 2003:pp3551-3556;
[13]刘浩.LCoS光引擎中分光合光部分的技术分析[J],现代显示,2008,92(9)：pp45-48；
[14]赵汉鼎.LCoS投影显示现状与我国LCoS产业的发展[J],新显示时代,2007No.11(Sum No.308):pp49-55;
[15]代永平.LCoS微显示技术[J],液晶与显示,2008年8月,第24卷第4期：pp471-476；
[16]Hsu Rong, Liu Peiyuan. New challenges in LCoS Technologies Lasers and Electro-Optics Society(J),2004,1(11):pp106-107;
[17]夏常荣.LCoS投影技术及其市场分析[J],国际光电与显示,2002 No.4：pp35-39；
[18]刘颖,池勇,陈守龙,蔡振龙.LED微投影显示技术发展现况与展望[D],2009全国半导体照明技术与应用论坛论文文集：pp104-108；
[19]梁静秋.微显示器件的研究进展[J],光机电信息,2010第27卷第12期：pp21-27；
[20]张永利,周晶晶,耿卫东,代永平,孙钟林.新型近眼显示系统的分析与设计(J),光电子技术,2004年6月,第24卷第2期：pp125—128；
[21]代永平,华强,孙钟林.基于LCoS的微型显示器[J].电视技术,2004：pp55-57：
[22]代永平,孙钟林,耿卫东.硅基微显示技术[J],光电子技术,2002,22(4)：pp192-197；
[23]金伟其,胡威捷,辐射度光度和色度及其测量[M],北京理工大学出版社,2004；
[24]汤顺清.色度学[M],北京理工大学出版社出版,1990.6；
[25]耿卫东,代永平,任立如,孙钟林.场时序彩色液晶显示器技术[J],半导体光电,2002年第23卷第5期：pp299-300；
[26]秦亚杰.LCoS微显示技术研究与设计[D]：pp7-10；
[27]Jeffrey A. Shimizu.适用于背投高清晰度电视的卷进式彩色LCoS[J].现代显示.2001(4)：pp27-30；
[28]章毓晋.图像工程上册-图像处理[M],清华大学出版社；
[29]应根裕,胡文波,邱勇.平板显示原理[M],人民邮电出版社,2002；
[30][日]大石严等主编,白玉林.王毓仁译.显示技术基础[M],2003年04月第1版：pp177-180；
[31]Martin Kykta高清显示中的伽马校正、亮度和明视度探索[J],现代显示,2009年12月：pp13-18；
[32]张兴义.电子显示技术[M],北京理工大学出版社,1998；
[33]魏永毅.液晶电光非线性效应校正技术研究[D]：pp13-20；
[34]耿卫东,刘会刚,刘艳艳,商广辉,金庆,胡思捷,全治臻.场序彩色LCoS智能伽玛矫正电路设计[J],液晶与显示,2010年10月,第25卷第5期：pp713-717；
[35]金笑丛.单片式LCoS视频显示系统的伽马校正[D]：pp39-41；
[36]李鸿安,戴青松,武沛俊.一种六基色投影显示技术[J].电子产品世界,2009 05：pp125-127；
[37]李熹霖.LED全彩色显示屏的白平衡和色均匀问题[J],现代显示,2004年第2期：pp15-16；
[38]邹静燕.单片LCoS四基色时序彩色显示的研究[D]：pp57-60；