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,Tcon )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Tcon 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 controlla-ble 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 Tcon ROM,according to the demand of users to realize WVA or NVA at different conditions,it gets two types of source volta-ges.The simulation results show that the up/down/left/right view angle are more than 8°at WVA and less than 40° at NVA,the results show that the new viewing angle controllable technology is effective.
参考文献
| [1] | 钟德镇;李永谦;戴文君 等.液晶显示装置[P].CN 201110225983.5,2011-11-23. |
| [2] | 马群刚.TFT-LCD原理与设计[M].北京:电子工业出版社,2011:216-242. |
| [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. |
| [4] | Seung Hee Lee;Hyang Yul Kim;Seung Min Lee;Seung Ho Hong;Jin Mahn Kim;Jung Yeal Koh;Hae Sung Park.Ultra-FFS TFT-LCD with super image quality, fast response time, and strong pressure-resistant characteristics[J].Journal of the Society for Information Display,20022(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].Applied Physics Letters,200688(4):041108. |
| [6] | Yeung F S;Li Y W;Kwok H S.Pi-cell liquid crystal displays at arbitrary pretilt angles[J].Applied Physics Letters,200790(5):051116. |
| [7] | Lim, YJ;Kim, JH;Her, JH;Park, KH;Lee, JH;Kim, BK;Kang, WS;Lee, GD;Lee, SH.Viewing angle switching of liquid crystal display using fringe-field switching to control off-axis phase retardation[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,20108(8):085501:1-085501:6. |
| [8] | Taira Y;Nakano D;Numata H.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].电子科技大学,2010. |
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