Ferroelectric liquid crystal apparatus having a threshold voltage greater than the polarization value divided by the insulating layer capacitance
AssigneeCanon Kabushiki Kaisha
InventorsShuzo Kaneko, Ryoji Fujiwara, Akio Yoshida, Tomoko Maruyama
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Abstract
A liquid crystal element includes a liquid crystal exhibiting spontaneous polarization, a pair of electrode substrates for sandwiching the liquid crystal therebetween, and insulating layers formed between the electrode substrates and the liquid crystal. A spontaneous polarization P.sub.s value, in nC/cm.sup.2, of the liquid crystal, an interelectrode composite capacitance Ci, in nF/cm.sup.2, of the insulating layers, and a voltage threshold value Vth, in volts, of optical response of the liquid crystal in the liquid crystal element satisfy the following condition: ##EQU1##
Claims2
A liquid crystal element comprising a liquid crystal exhibiting spontaneous polarization, a pair of electrode substrates for sandwiching said liquid crystal therebetween, and insulating layers formed between said electrode substrates and said liquid crystal, wherein a spontaneous polarization P.sub.S value, in nC/cm.sup.2, of said liquid crystal, an interelectrode composite capacitance Ci, in nF/cm.sup.2, of said insulating layers, and a voltage threshold value Vth, in volts, of optical response of said liquid crystal in said liquid crystal element satisfy the following condition:
- ##EQU25##
Dependencies are inferred from the claim text.