Patent ID: 7909974

Claim:
A layer composition of an electrowetting system, comprising a first carrier made of a transparent insulating material; a first electrode layer disposed over the first carrier; an insulator layer over the first electrode layer being built, at least in parts, of a material with a permittivity of ∈ r ≧20; a first repellent layer over the insulator layer that is repellent for at least one fluid that adjoins to the repellent layer; a fluid layer on the first repellent layer, wherein the fluid layer comprises at least two non-mixable fluids which, under the influence of an applied voltage, reversibly change their wetting behavior towards a surface of the first repellent layer; and a second repellent layer disposed over a first adhesive layer disposed over a second electrode layer disposed over a second carrier; wherein the first carrier, the first electrode layer, the insulator layer and the first repellent layer form a first section, and the second repellent layer, the first adhesive layer, the second electrode layer and the second carrier form a second section, with the first and second section forming a sandwich around the fluid layer, wherein a second adhesive layer is disposed between the insulator layer and the first repellent layer, and wherein the adhesion enhancing layer comprises Si n H 2n+2 or Si n H 2n (n≧1) or a mixture thereof.