负型液晶在ADS广视角技术中的应用

王菲菲; 邵喜斌

doi:doi:10.3788/yjyxs20163108.0760

液晶与显示, 2016, 31 (8): 760, 网络出版: 2016-10-24

负型液晶在ADS广视角技术中的应用

Application of negative LC in ADS wide view technology

论文大纲

王菲菲邵喜斌 ^*

作者单位

北京京东显示技术有限公司, 北京 100176

广视角技术高级超维场转换技术负型液晶残像 wide view technology advanced super dimension switch technology negative liquid crystal image sticking

摘要

为满足液晶面板尤其是大尺寸产品对高透过率不断提升的需求, 进行负型液晶在ADS广视角技术中的研究。首先, 介绍ADS技术的发展进程及主要特点, 然后模拟分析负型液晶参数变化对ADS显示特性的影响, 最后, 利用mini cell对负型液晶和PI材料的进行实验室评价。液晶参数中: Δn影响透过率, |Δε|和K值影响响应时间和工作电压, γ1影响响应时间。负型液晶透过率比正型液晶提升约8%, 但响应时间增加约50%, 负型液晶与PI的匹配性及残像差于正型液晶, 与PI材料的搭配对残像有显著影响。调整负型液晶参数可优化产品性能。负型液晶可大幅提高产品的透过率, 但需要加快响应时间和提升残像水平。响应速度的提高除了需要降低液晶的黏度, 还需在电极结构优化方面做更多努力, 而残像水平的提升, 除提高负型液晶材料本身的稳定性外, 与其搭配的取向材料的研发也十分重要。

Abstract

In order to meet the demand of high transmittance for large size products, we research the application of negative LC in ADS technology. First, we introduce the development progress and main features of ADS technology. And then, we analyze the relationship between negative LC parameters and ADS display characteristics. Finally, we evaluate the features of different negative LC matching with different PI materials. Among the parameters of negative LC, Δn greatly affects on transmittance, |Δε| and K mainly impact on response time and operation voltage, γ1 has great influence on RT. The transmittance of negative LC is about 8% higher than that of positive LC, but the RT is increased by ~50%. The matching of negative LC and PI materials is worse than positive LC, and it has significant impact on imaging sticking. The product performance can be optimized by adjusting the negative liquid crystal parameters. The transmittance can be greatly improved by using of negative LC, but the response time and image sticking should be greatly improved for large size display. Response time can be fasted by lower γ1 of LC, but it may be not enough, further optimizing the pixel structure is also necessary. Image sticking can be improved by enhancing the stabilized of LC, while the development of PI material for negative LC is also very important.

参考文献

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王菲菲, 邵喜斌. 负型液晶在ADS广视角技术中的应用[J]. 液晶与显示, 2016, 31(8): 760. WANG Fei-fei, SHAO Xi-Bin. Application of negative LC in ADS wide view technology[J]. Chinese Journal of Liquid Crystals and Displays, 2016, 31(8): 760.

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