Polymer-dispersed liquid crystal device having an...

Details Polymer-dispersed liquid crystal device having an... Polymer-dispersed liquid crystal device having an...

G - Physics

02

F

G02F 1/1333 (2006.01) C09K 19/38 (2006.01) C09K 19/54 (2006.01) G02F 1/1334 (2006.01)

Patent

CA 2096826

2096826 9212219 PCTABS00014 A polymer-dispersed liquid crystal device comprises a multiplicity of droplets of a birefringent, functionally nematic liquid crystal material dispersed in a matrix comprising the reaction product of ultraviolet radiation polymerizable materials. The device specularly transmits incident light as a function of the magnitude of an electric field applied across the device. The difference between a first applied voltage corresponding to a first percentage of the total incident light transmitted by the device as a specular light and a second applied voltage corresponding to a second percentage of the total incident light transmitted by the device as specular light is greater than or equal to 15 volts. As a result, a polymer-dispersed liquid crystal device according to the invention displays a variable grey scale which has a uniform optical transmission. A method for preparing a PDLC device in general is also disclosed.

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