1. A method for producing a polymer composition with the ability to be cured by UV light to an anisotropic electrically conductive polymer layer, comprising the steps of:providing a non-conductive matrix of a flowable polymer composition having inherent photocurability;
adding to said matrix conductive particles having a predetermined aspect ratio in an amount sufficiently low to allow the concentration of the conductive particles to be maintained at a level lower than the percolation threshold of isotropic mixture; and
placing the thus formed composition in a receptacle in which exposure to UV light is prevented;
wherein the aspect ratio is defined as the ratio between the largest linear dimension of a particle and the largest dimension perpendicular to said largest dimension,
wherein the aspect ratio for a majority of the conductive particles is in the range below 5,
wherein the aspect ratio for at least 75% of the particles is in the range below 10, and
wherein the aspect ratio for at least 90% of the conductive particles is in the range below 20.