G - Physics – 09 – F
Patent
G - Physics
09
F
40/36, 345/8
G09F 13/20 (2006.01) B44F 1/06 (2006.01) B44F 1/10 (2006.01) G02F 1/00 (2006.01) G09F 9/35 (2006.01)
Patent
CA 1273791
DISPLAY FORMS USING LIQUID CRYSTALS ABSTRACT In a display device, planar or curved, panel or coloured pane it is known that the image or the colours do not change noticeably with the angle of viewing or angle of illumination. In this invention drastic changes in the image and colours can be obtained using cholesteric or other chiral liquid crystal coatings or polymers with liquid crystaline properties. In addition the colours are more intense than feasible with other colourants. These two properties are value in applications where it is desired to attract the viewers attention such as in advertising and signage. In a coloured pane consisting of ornamental or stained glass parts it is known that the process of achieving the desired image effects is not simple and limited in scope. Using liquid crystal coatings the process of achieving such effects is greatly simplified and less expensive. By providing two or more liquid crystal coatings on transparent substrates overlaying each other new colours and three-dimensional effects can be obtained as a result of the colour additive properties of liquid crystals coatings which do not absorb light.
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