Patent ID: 8134581
Filing Date: 2012-03-13
Classification: G02F

Abstract:
1. A method of imaging a bistable matrix-addressable display element comprising: providing a bistable matrix-addressable display element comprising a substrate, a bistable chiral nematic liquid crystal imaging layer having a reflection maximum, at least one conductor, and at least one field-spreading layer between said bistable chiral nematic liquid crystal imaging layer and said at least one conductor, wherein said field-spreading layer has a sheet resistance (SER) of from 10.sup.9 to 10.sup.6 Ohms per square; identifying an area to be updated of said bistable matrix-addressable display element, wherein said area to be updated comprises rows of pixels; and applying a sequence of drive signals having a 4-phase approach to image said bistable matrix-addressable display element, wherein said 4-phase approach comprises: