发明名称 Liquid crystal devices comprising a multitude of domains having different threshold voltages for switching liquid crystals
摘要 A liquid crystal device comprises a pair of substrates and a liquid crystal provided between the paired substrates wherein domains whose threshold voltages are different from one another are finely distributed throughout the liquid crystal. In particular, the respective substrates each has a transparent electrode and an alignment film formed thereon in this order and the substrates are assembled to establish a given space therebetween, and a ferroelectric liquid crystal being injected into the given space wherein domains are finely distributed as set out above, thereby providing a a liquid crystal display device. The fine distribution is such that when a transmittance through inverted domains is 25%, the number of domains (microdomains) having a size of larger than 2 mumphi in a field of 1 mm2 is not smaller than 300, preferably not smaller than 600, and the width of the threshold voltage within the domains is not smaller than 2 volts within a transmittance range of from 10 to 90%. The liquid crystal device, particularly the display device, keeps a high contrast and can easily, reliably realize an analog gray-side display at low costs.
申请公布号 US6384887(B1) 申请公布日期 2002.05.07
申请号 US19990419753 申请日期 1999.10.18
申请人 SONY CORPORATION 发明人 YASUDA AKIO;NITO KEIICHI;MATSUI ERIKO;TAKANASHI HIDEHIKO;YANG YING-BAO
分类号 G02F1/1333;G02F1/1337;G02F1/141;(IPC1-7):G02F1/133;G02F1/133 主分类号 G02F1/1333
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