Liquid crystal cells – elements and systems – Cell containing liquid crystal of specific composition – In cholesteric phase
Reexamination Certificate
2005-04-05
2005-04-05
Parker, Kenneth (Department: 2871)
Liquid crystal cells, elements and systems
Cell containing liquid crystal of specific composition
In cholesteric phase
C252S299010
Reexamination Certificate
active
06876427
ABSTRACT:
An optical body includes a) first particles comprising a first cholesteric liquid crystal material and b) a second cholesteric liquid crystal material. The first particles and the second cholesteric liquid crystal material form a structure where the first cholesteric liquid crystal material has a pitch that is different than the second cholesteric liquid crystal material. In one example, the second cholesteric liquid crystal material is in the form of second particles. In another example, the first particles are dispersed in a matrix of the second cholesteric liquid crystal material. In other examples, the optical body has more than one layer. In addition, one or more additional cholesteric liquid crystal materials can be used in the optical body. These optical bodies can be used as a reflective polarizer and can be used in a display.
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Bowley Christopher C.
Ebihara Ikuko
Gilligan Gregory Edward
Pokorny Richard John
Radcliffe Marc Dudley
3M Innovative Properties Company
Chung David
Kobilansky Anna A.
Parker Kenneth
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