Patent ID: 9129539
Filing Date: 2015-09-08
Classification: G02B,G09F,Y10T

Abstract:
1. A device for displaying information comprising at least one display element which includes: a liquid, the surface energy thereof being variable by means of an electric field; a first and a second volume for receiving the liquid, wherein said first and said second volume are defined by a first effective radius or a second effective radius, respectively; a fluidic passage between said first and said second volume, wherein in a first state said liquid substantially occupies said first volume and wherein in a second state said liquid substantially occupies said second volume, and wherein said passage is configured such that the fraction of the liquid facing to the unoccupied volume comprises a radius which is smaller than the effective radius of the presently occupied volume such that if the liquid occupies the first volume it will remain disposed in a stable manner in the first volume if the electric field is turned off and if the liquid occupies the second volume it will remain disposed in a stable manner in the second volume if the electric field is turned off, and wherein said first and/or said second volume are in fluidic connection with at least one respectively associated return volume, wherein the liquid volume is adjusted such that said return volume is partly filled and a radius forms which is larger than the radius of the liquid within the passage.