G - Physics – 02 – F
Patent
G - Physics
02
F
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G02F 1/133 (2006.01) G02F 1/1343 (2006.01) G02F 1/137 (2006.01)
Patent
CA 1189171
ABSTRACT "Liquid crystal display device". In a matrix display device in which the bistabi- lity effect of cholesteric liquid crystals is used the supporting plates 1, 2 are provided with first ridges 3 and second ridges ? ? extend across the second ridges onto the first ridges 3 on which the electrodes are separated from each other by a strip 6. Liquid crystal orienting layers 7 are provided over the whole surface of the supporting plates 1, 2. The second ridges 4 divide each picture element into many sub-elements, Upon forming the focal-conic texture as a result of surface-inhomo- geneities the second ridges 4 restrict the growth of said texture into the homeotropic-nematic texture to one single element. (Figure 2)
419007
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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