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US 5,353,140 AGranted
Liquid crystal display
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Takashi Inujima, Toshimitsu Konuma, Toshiji Hamatani, Akira Mase, Mitsunori Sakama, Minoru Miyazaki, Kaoru Koyanagi, Toshiharu Yamaguchi
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Abstract
A liquid crystal display of the chiral smectic type is caused to have grey scales, by applying a voltage of an intermediate level to the liquid crystal. Within each picture element of the display, there are a number of domains of the liquid crystal layer, some being transparent while the other being opaque rendering grey tone to the picture element.
Claims15
A liquid crystal device comprising:
- a first substrate having a first electrode arrangement and a plurality of semiconductor devices;
- a second substrate opposed to said first substrate and having a second electrode arrangement;
- a rubbed orientation control layer provided on said second substrate;
- a liquid crystal layer disposed between said first and second substrates,
- wherein said first substrate has an unrubbed surface contiguous to said liquid crystal layer.
2 more elements
A liquid crystal display comprising:
- a substrate having a first transparent pattern formed thereon, thereby forming a first inner surface;
- a smectic liquid crystal layer contiguous to said first inner surface;
- a second electrode pattern forming a second inner surface contiguous to an opposite side of said smectic liquid crystal layer with respect to said first inner surface;
- and
- a plurality of pixels defined by said first and second electrode patterns in said liquid crystal layer,
- wherein one of said first and second inner surfaces contiguous to said liquid crystal layer is an unrubbed, uneven surface and the other of said first and second inner surfaces is a rubbed, oriented surface, and each said pixel comprises a plurality of regions having various thickness dispersed in the pixel.
3 more elements
A liquid crystal display comprising:
- a substrate having a first transparent pattern formed thereon, thereby forming a first inner surface;
- a smectic liquid crystal layer contiguous to said first inner surface;
- a second electrode pattern forming a second inner surface contiguous to an opposite side of said smectic liquid crystal layer with respect to said first inner surface;
- and
- a means for defining a plurality of picture elements on the liquid crystal layer, each picture element containing a plurality of domains.
2 more elements
Dependencies are inferred from the claim text.