Liquid crystal device having a plural stripe-shaped ribs on one substrate for providing gradation display
First Claim
1. A ferroelectric liquid crystal device, comprising:
- a chiral smectic liquid crystal sandwiched between substrates having opposed surfaces upon which electrodes are formed, wherein the chiral smectic liquid crystal can be driven when an electric field is applied through said electrodes, and wherein at least one of the opposite opposed substrate surfaces has plural stripe-shaped ribs formed periodically thereon;
whereinsaid liquid crystal molecules are oriented by a rubbing process such that normal lines of a plurality of layers of liquid crystals constructed by a plurality of liquid crystal molecules are arranged in a uniform direction when they are projected onto the electrodes perpendicularly across the longitudinal direction of said strip-shaped ribs.
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Abstract
There is disclosed a ferroelectric liquid crystal device such as a chiral smectic liquid crystal device which is suitable for a gradation display. A chiral smectic liquid crystal is sandwiched between electrode substrates and is driven by an electric field which is applied through electrodes formed on the electrode substrates. At least one of the opposite electrode substrate surfaces periodically has a shape like a stripe-shaped rib. Liquid crystal molecules are oriented so that the normal lines of a plurality of layers which are constructed by a plurality of molecules and are arranged in a uniform direction when they are projected onto the electrode substrate surfaces perpendicularly cross the longitudinal direction of the stripe-shaped rib.
45 Citations
5 Claims
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1. A ferroelectric liquid crystal device, comprising:
- a chiral smectic liquid crystal sandwiched between substrates having opposed surfaces upon which electrodes are formed, wherein the chiral smectic liquid crystal can be driven when an electric field is applied through said electrodes, and wherein at least one of the opposite opposed substrate surfaces has plural stripe-shaped ribs formed periodically thereon;
whereinsaid liquid crystal molecules are oriented by a rubbing process such that normal lines of a plurality of layers of liquid crystals constructed by a plurality of liquid crystal molecules are arranged in a uniform direction when they are projected onto the electrodes perpendicularly across the longitudinal direction of said strip-shaped ribs. - View Dependent Claims (2, 3, 4, 5)
- a chiral smectic liquid crystal sandwiched between substrates having opposed surfaces upon which electrodes are formed, wherein the chiral smectic liquid crystal can be driven when an electric field is applied through said electrodes, and wherein at least one of the opposite opposed substrate surfaces has plural stripe-shaped ribs formed periodically thereon;
Specification
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- Resources
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Current AssigneeCanon Kabushiki Kaisha (Canon Inc.)
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Original AssigneeCanon Kabushiki Kaisha (Canon Inc.)
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InventorsOkada, Shinjiro
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Primary Examiner(s)Sikes, William L.
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Assistant Examiner(s)MAI, HUY KIM
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Application NumberUS07/836,914Time in Patent Office643 DaysField of Search359/87, 359/99, 359/100, 359/54, 359/76US Class Current349/85CPC Class CodesG02F 1/133784 by rubbingG02F 1/134309 characterised by their geom...G02F 1/141 using ferroelectric liquid ...G02F 2203/30 Gray scale
