BigPatents India

This relates to liquid crystal device which comprises (a) pair of transparent substrates held facing each other with a gap normally employed in such devices, (b) each substrate having on one of its surfaces a coating of a transparent electrically conducting material which serves as an electrode, (c) an additional layer of a coating of a polymer on the resulting substrate, (d) a discotic nematic liquid crystal being filled in the gap between the coated surfaces of the substrates thereby forming a cell, and (e) the cell mounted between a pair of crossed polarizers. The above device has the following advantages over the conventional TN-liquid crystal display: (i) a wider and symmetric viewing angle, and (ii) avoidance of the step involving the alignment of the liquid crystal by rubbing or photo-alignment (iii) considerable reduction in the change in the pixel capacitance between ON and OFF states.