Patent ID: 7636139
Filing Date: 2009-12-22
Classification: G02F

Abstract:
1. A colour display device comprising: a first display substrate and a second display substrate, said substrates being spaced apart and opposed to each other; a layer of an electro-optic material between the substrates; a set of first elongated electrodes on an inner surface of the first display substrate and a set of second elongated electrodes on an inner surface of the second display substrate, the first electrodes overlapping the second electrodes to define pixels for selectively applying an electric field across at least some of said electro-optic material, a length of the first electrodes being arranged substantially orthogonally relative to a length of the second electrodes; a set of first elongate colour filters on the first display substrate, each of said electrodes being in register with one of said first colour filters; and a set of second elongate colour filters on the second display substrate, each of said second electrodes being in register with one of said second colour filters, said set of first colour filters being arranged such that a length of said set of first colour filters is substantially orthogonal relative to a length of said set of second colour filters and each first colour filter overlaps at least two second color filters; in which the colour of light transmitted through a pixel is determined by the light transmitted by both the first colour filter and the second colour filter that intersect at that pixel.