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Method of making liquid crystal device having plural stripe-shaped ribs on one substrate

  • US 5,499,130 A
  • Filed: 06/05/1995
  • Issued: 03/12/1996
  • Est. Priority Date: 02/20/1991
  • Status: Expired due to Fees
First Claim
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1. A method for producing a liquid crystal element, comprising the steps of:

  • selecting a pair of electrode substrates;

    forming a configuration of periodic stripe-like ribs on at least one of the pair of electrode substrates;

    subjecting each of said pair of electrode substrates to a rubbing processing in which the rubbing of the lower substrate is made in a direction at an angle rotating in a clockwise direction from a rubbing direction of the upper substrate;

    selecting a chiral smectic liquid crystal which changes state between isotropic phase, cholesteric phase and smectic A phase according to temperature;

    injecting said chiral smectic liquid crystal between said pair of electrode substrates;

    providing means for applying a voltage between said pair of electrode substrates, said voltage forming a transmittance in said liquid crystal according to a gradation ;

    wherein a normal line with respect to plural layers arranged in a uniform direction composed of plural molecules projected onto the surface of said electrode with said stripe-like ribs crosses said stripe-like ribs.

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