Patent ID: 6034758
Filing Date: 2000-03-07
Classification: G02F,G09G

Abstract:
A passive dot matrix liquid crystal display assembly adapted to be driven at a multiplex ratio of 1/2 to 1/4, comprising:(a) a first electrode plate having a face and a back;(b) a second electrode plate having a face and a back, said face of said second plate being spaced apart from and opposed to said face of said first plate;(c) a layer of liquid crystal material intermediate said face of said first plate and said face of said second plate;(d) a plurality of spaced apart electrodes on the face of said second plate defining a matrix of back plane electrodes, said matrix comprising at least two columns and comprising a predetermined number of rows, said predetermined number of rows being greater than twice the inverse of said multiplex ratio;(e) a plurality of electrically conductive bridges interconnecting a plurality of said back plane electrodes to form a predetermined number of groups of interconnected back plane electrodes, said predetermined number of groups being equal to the inverse of said multiplex ratio;(f) a plurality of electrically conductive back plane leads, said electrically conductive back plane leads each being connected to one of said groups of interconnected back plane electrodes for applying a voltage thereto;(g) a plurality of spaced apart electrodes on the face of said first plate defining a matrix of main electrodes, said matrix comprising at least two columns and comprising a predetermined number of rows, said predetermined number of rows being greater than twice the inverse of said multiplex ratio, each of said main electrodes being spaced apart from and aligned with one of said back plane electrodes on said second plate;(h) a plurality of bridges on the face of said first plate, said plurality of bridges electrically interconnecting a plurality of said main electrodes to form a plurality of main electrode groups, wherein the number of main electrodes in each main electrode group is no greater than the inverse of said multiplex ratio;(i) a plurality of electrically conductive main leads on the face of said first plate, each of said main leads electrically connected to one of said plurality of main electrode groups.