Patent ID: 7271743
Filing Date: 2007-09-18
Classification: H03K

Abstract:
1. A switch arrangement, comprising: a lamellar photoconductor; at least one light source to illuminate the photoconductor; and a conductor comprising a lamellar matrix consisting of crossing rows and columns and arranged to further transmit light escaping from the photoconductor to said conductor through local contacts between the photoconductor and said conductor, said local contacts being located at the points of intersections of said rows and said columns for guiding light to both said row and said column; wherein the photoconductor is flexible and configured to flexibly press against the conductor by the effect of an external force for inducing the local contact, and to return after the termination of the effect of said external force for losing the local contact, to cause a detectable change in the light guided through the local contact; and wherein each row and each column is provided with a sensor arranged to detect light guided through the local contact and further along the row and the column.