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Reflective-type liquid crystal display using polarizer free mixed- mode twist nematic cells with dichroic dye
Reflective-type liquid crystal display using polarizer free mixed- mode twist nematic cells with dichroic dye
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机译:使用无偏振片的混合模式扭曲向列单元和二色性染料的反射型液晶显示器
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摘要
An optical display employs a liquid crystal cell with a d&Dgr; n/. lambda. of approximately 0.2-0.8, allowing the cell's optical transmissivity to be modulated by an applied electric field through a dominant non-polarization rotation effect. For visible wavelengths, d. DELTA.n is approximately 0.1-0.4 microns, with a preferred value of about 0.25 microns. Applications include a reflective projection display in which input light is polarized at a greater than 0° and less than 90° angle, preferably about 20°, to the input LC directors of a twisted nematic cell; a reflective direct view system in which a quarter- wave plate is substituted for a polarization analyzer; and both a reflective and a transmissive guest-host system in which optical absorption by dye molecules is the dominant modulation mechanism.
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机译:光学显示器采用具有d&Dgr的液晶盒。 n /。 lambda。大约0.2-0.8°的光,可以通过主要的非偏振旋转效应,通过施加的电场来调制电池的光透射率。对于可见波长,d。 Δn约为0.1-0.4微米,优选值为约0.25微米。应用包括反射式投影显示器,其中输入光以大于0°且小于90°的角度偏振,优选约20°偏振到扭曲向列型液晶盒的输入LC指向矢;一种反射式直视系统,其中四分之一波片代替了偏振分析仪;以及反射和透射的客体-宿主系统,其中染料分子的光吸收是主要的调制机制。
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