| 摘要 |
A liquid crystal display device comprising a laser beam source, a liquid crystal cell so formed that a liquid crystal layer in which a liquid crystal of cyano-biphenyl system is added with a dichromatic dye of 1,3 di (1,4-dimethyl-7-isopropylazulenyl)-cyclobutene diylium having a formula <IMAGE> is interposed between opposing transparent electrode plates, and means for irradiating to the cell a laser beam generated from the laser beam source.
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