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US 4,906,074 AGranted
FLC liquid crystal electro-optical device having microdomains within pixels
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Masahiko Sato
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Abstract
A liquid crystal display comprises a pair of substrates provided with an electrode arrangement in matrix form, A chiral smectic C phase liquid crystal material is interposed between the substrates. In the liquid crystal layer, each pixel consists of a number of micro-domains which can be compared to polycrystal line structures. Interaction between adjacent pixels through well ordered liquid crystal structure is suppressed by virtue of the micro-domains.
Claims2
A liquid crystal device comprising:
- a pair of substrates;
- a chiral smectic liquid crystal layer interposed between said substrates;
- an electrode arrangement provided for defining a plurality of cell regions in said liquid crystal layer in array form and for applying an electric field to each region;
- and
- an orientation control surface formed on at least one inside surface of said substrates,
- wherein said liquid crystal layer is composed of a material conforming to the formula, ##STR4## where R.sub.1 is a hydrocarbon, and R.sub.2 is a hydrocarbon comprising at least two asymmetric carbon atoms,
- whereby each region consists of a plurality of individual micro-domains in each of which liquid crystal molecules are aligned in accordance with one direction which is different from adjacent micro-domains contiguous thereto.
4 more elements
Dependencies are inferred from the claim text.