Patterned light modulating device
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United States of America Patent
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Jun 23, 2009
Grant Date -
Aug 26, 2004
app pub date -
Jul 7, 2003
filing date -
Jul 4, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A repeated pattern layer having areas for imparting different electro-optic characteristics to a light modulating device is disclosed. The repeated pattern is arranged so that any pixel area formed in the assembled device (above a certain minimum size) will contain an area of each electo-optic characteristic in the right proportions. The pattern is arranged as a two dimensional grid of areas of different characteristic with at least one area of each characteristic provided in each row and column of the grid.The patterned layer may usefully be an alignment layer for a liquid crystal device, especially a bistable device, and the different areas may be arranged to give grey scale in the device.
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