共查询到19条相似文献,搜索用时 875 毫秒
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用微锥膜改善反射式彩色液晶显示器件的视角 总被引:1,自引:0,他引:1
本文提出并设计了一种具有微圆锥形结构的膜,用于改善反射式彩色液晶显示器的色度和视角。模拟计算结果表明,这种膜可以准直从锥形底部入射的光,向前散射由锥形顶部入射的光。作为应用实例,我们分析了微圆锥形结构膜对反射式干涉彩色滤光膜视角特性的影响,其作用十分显著。由于微锥膜的作用不依赖于液晶器件层,所以对多种模式的反射式彩色液晶显示器都是有效的。 相似文献
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聚合物分散螺旋织构(PDCT)液晶固态薄膜显示器是一种新型高反射率高对比度反射式液晶显示器。PDCTLC模式同时综合运用了对入射光的两种散射和一种反射机制,成功实现了光学关断态的类纸型亮白色态。这种类纸型薄膜光阀尤其适用于反射式超大屏幕显示装置。 相似文献
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提出了一种采用单偏振片和单补偿膜的反射式彩色超扭曲向列液晶显示器(STN—LCD),通过器件参数和补偿膜的优化得到了高亮度和高对比度。 相似文献
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文中研究了反射式TFT液晶电子纸的原理及实现方法.其特征为在普通TFT面板的基础上,增加全反射结构以及采用低功耗驱动.该液晶电子纸可直接利用环境光,不需要背光,功耗较低.实验结果表明该反射式TFT液晶电子纸具有传统电子纸类似的显示效果,同时具有高速的显示响应和优越的高温环境显示性能.对采用5.4 cm反射式TFT液晶面... 相似文献
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LCOS(Liquid Crystal On Silicon)是近年来发展迅速的一种新的反射式投影芯片技术、即反射式液晶或硅面液晶。LCOS与传统的DLP的主要区别在于,LCOS是用控制液晶透光率的方式改变光的强度,而DLP是用微镜片的旋转角度控制光的强度。LCOS即具有反射式投影器件的优点,又兼有透射式器件低成本的优势,因此吸引了很多厂家的注意力。 相似文献
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《Display Technology, Journal of》2009,5(8):331-334
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SHIHongjun SHIYongji 《半导体光子学与技术》1998,4(2):67-73
A modular flat-screen liquid crystal television display is described .The picture elements of the modules may be emissive ,reflective or transmissive .The flat-screen liquid crystal television also comprised of an electrical control circuit capable of categorizing incoming television picture signals corresponding to the modules in the array and directing the electrical signals to the drive circuits of each module according to the portion of the television picture to be reproduced by the picture elements of that module.The picture elements are preferably formed in a light modulating film composed of a liquid crystal dispersion in a polymeric binder.A color display was also produced by placing a patterned red-green-blue filter adjacent the active matrix so that each picture element could also be coordinated with the color components of a color video signal. 相似文献
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SHIHongjun SHIYongji 《半导体光子学与技术》1998,4(1):1-9
A modular flat-screen liquid crystal television display is described.The picture elements of the modules may be emissive ,reflective or transmissive .The flat-screen liquid crystal television also comprised of an electrical control circuit capable of categorizing incoming television picture signals corresponding to the modules in the array and directing the electrical signals to the drive circuits of each module according to the portion of the television picture to be reproduced by the picture elements of that module.The picture elements are preferably formed in a light modulating film composed of a liquid crystal dispersion in a polymeric binder.A color display was also produced by placing a patterned red-green-blue filter adjacent the active matrix so that each picture element could also be coordinated with the color components of a color video signal. 相似文献
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《Electron Device Letters, IEEE》2002,23(7):401-403
Polymer dispersed liquid crystal (PDLC) is a promising liquid crystal for reflective displays in low power mobile applications. However, it is difficult to obtain full color PDLC displays. Color sequential PDLC is one solution but this requires short PDLC switching times. It is demonstrated that the PDLC switching times can be reduced to color sequential levels by changing the orientation of the electric field (field-oriented addressing). By choosing the right pixel geometry, this can be done at relatively low switching voltages compared to the classic addressing method which is based on changing the magnitude of the electric field 相似文献
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利用Berreman 4×4矩阵和Matlab编程模拟了胆甾相液晶的反射光谱,分析了螺旋数(液晶厚度)、基板的折射率、双折射、折射率色散、固定螺距、梯度螺距和入射角等因素对反射光谱带宽的影响。结果表明,要得到理想的Bragg反射带宽,液晶层的厚度即螺旋数N需达到N≥10;基板折射率会影响最大反射率,基板折射率ng与寻常光折射率no相比,ngno时,最大反射率比较低,ng越小越影响明显,当ng≥no时,具有很好的反射率;折射率的色散和大的入射角会使带宽变窄,而大的双折射Δn和螺距P可以得到较宽的反射带宽,但拓宽效果有限。通过梯度螺距的函数表达式,理论模拟了具有螺距梯度的胆甾相液晶的反射带宽,其对于胆甾相液晶宽波反射的实验研究具有一定的意义。 相似文献
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研究LED背光对液晶器件色彩的影响和CSTN及TFT—LCD白色色度坐标的变化规律,以及LCD的红、绿、蓝三色受LED背光的影响规律及色彩还原性的变化,并对背光发光光谱和液晶屏的透过光谱进行了测量比较。 相似文献