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Optical liquid-crystal devices allowing high-frequency excitations

机译:允许高频激发的光学液晶装置

摘要

A method applicable to a liquid crystal cell comprising two parallel transparent plates (11, 12) coated on their facing inert faces with electrode-forming conductive coatings (14,15), and with a shim (13) interposed between the plates, the space in said cells between said plates containing a substance (17) including molecules which are endowed with nematic properties, wherein: controlled variations in surface impedance are defined on at least one of the electrode coatings in selected zones (16) thereof; and a variable frequency excitation electrical voltage is applied between the electrodes (14, 15) provided on respective ones of said plates (11, 12), and voltage being selected to be suitable for producing alternately an electric field extending normally to the electrodes and an electric field which slopes relative to the normal to said electrodes at said zones (16) having a controlled impedance variation.
机译:一种适用于液晶盒的方法,包括两个平行的透明板(11、12),在其面对的惰性面上涂有形成电极的导电涂层(14,15),以及在板之间插入垫片(13)。在所述板之间的所述单元中,所述板包含含有被赋予向列性质的分子的物质(17),其中:在其选定区域(16)中的至少一个电极涂层上限定了表面阻抗的受控变化;并且在设置在所述板(11、12)中的各个板(11、12)上的电极(14、15)之间施加可变频率的激励电压,并且该电压被选择为适于交替产生垂直延伸到所述电极和所述电极的电场。相对于所述电极的法线在所述区域(16)处相对于所述电极的法线倾斜的电场具有受控的阻抗变化。

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