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昆山龙腾光电有限公司, 江苏 昆山 215301
收稿日期:2014-10-13,
修回日期:2014-11-23,
纸质出版日期:2015-06-05
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吴婷婷, 苏子芳, 钟德镇, 姜丽梅. 一种新的视角可控的液晶显示仿真研究[J]. 液晶与显示, 2015,30(3): 538-542
WU Ting-ting, SU Zi-fang, ZHONG De-zhen, JIANG Li-mei. New viewing angle controllable LCD[J]. , 2015,30(3): 538-542
吴婷婷, 苏子芳, 钟德镇, 姜丽梅. 一种新的视角可控的液晶显示仿真研究[J]. 液晶与显示, 2015,30(3): 538-542 DOI: 10.3788/YJYXS20153003.0538.
WU Ting-ting, SU Zi-fang, ZHONG De-zhen, JIANG Li-mei. New viewing angle controllable LCD[J]. , 2015,30(3): 538-542 DOI: 10.3788/YJYXS20153003.0538.
在PVA显示模式的基础上
研究了一种新型的液晶显示视角切换技术.通过增大液晶分子在暗态下的倾斜角度控制暗态亮度
实现了宽视角下暗态低
显示对比度高;窄视角下暗态高
在相同白态亮度下
显示对比度低.实施可行性:在时序控制芯片系统(Timing Controling
T
con
)中烧录两版code
使用者根据不同环境下对宽窄视角的特性需求选择相应的显示模式
通过宽窄视角下分别采用不同的
T
con
code编译驱动电压以实现宽窄视角的面板显示.模拟结果表明:宽视角显示上下左右视角达到80以上
而窄视角显示上下左右视角均不足40
从模拟结果看本文提供的宽窄视角显示方法是有效的.
Based on the PVA mode
this paper researches a new technology of viewing angle controllable LCD. By increasing the pretilt angle of liquid crystal molecular at dark states
it realizes a high contrast with low dark luminance at wide-viewing angle(WVA) mode and low contrast with high dark luminance at narrow-viewing angle(NVA) mode. By burning different code to
T
con
ROM
according to the demand of users to realize WVA or NVA at different conditions
it gets two types of source voltages. The simulation results show that the up/down/left/right view angle are more than 8at WVA and less than 40 at NVA
the results show that the new viewing angle controllable technology is effective.
钟德镇,李永谦,戴文君,等. 液晶显示装置:中国, 201110225983.5 [P]. 2011-11-23. Zhong D Z, Li Y Q, Dai W J, et al. The Liquid crystal display device:Chinese, 201110225983.5 [P]. 2011-11-23.(in Chinese)[2] 马群刚. TFT-LCD原理与设计 [M]. 北京:电子工业出版社, 2011:216-242. Ma Q G. Principle and Design of TFT-LCD[M].Beijing:Electronic industry Press,2011:216-242.(in Chinese)[3] 田民波,叶锋. TFT液晶显示原理与技术 [M]. 北京: 科学出版社, 2010:98-125. Tian M B, Ye F. The Principle and Technology of TFT-LCD[M].Beijing:Science Press,2010:98-125. (in Chinese)[4] Lee S H, Kim H Y, LEE S, et al. Ultra-FFS TFT-LCD with super image quality,fast response time, and strong pressure-resistant characteristics [J]. Journal of the Society for Information Display, 2002,10(2):117-122.[5] Yeung F S, Li Y W, Kwok H S. Viewing angle switching of vertical alignment liquid crystal displays by controlling birefringence of homogenously aligned liquid crystal layer[J]. Appl.Phys.Lett., 2006,88(4):041108.[6] Yeung F S, Li Y W, Kwok H S. Pi-cell liquid crystal displays at arbitrary pretilt angles[J]. Appl.Phys.Lett., 2007, 90(5):051116.[7] Lim Y J,Kim J H, Her J H, et al. Viewing angle switching of liquid crystal display using fringe-field switching to control off-axis phase retardation[J]. J.Phys.D:Appl.Phys, 2010,43:085501.[8] Taira Y, Nakano D, Numata H, et al. Low-power LCD using a novel optical system[J].SID'02 Digest,2002:1313-1315.[9] 冷金荜. 可控视角LCD的原理研究及验证[D].成都:电子科技大学, 2010. Leng J B. The principle research and vertification of viewing angle controlled LCD[D]. Chengdu: University of Electronic Science and Technology, 2010. (in Chinese)
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