Patent ID: 8264466
Filing Date: 2012-09-11
Classification: G02F,G06F

Abstract:
1. A transparent touch screen construction, comprising: a substrate; a plurality of layer stacks disposed on the substrate leaving areas of the substrate exposed and areas of the substrate covered by the stacks, each layer stack comprising a transparent conductor layer and an intermediate layer, the intermediate layer having a first major surface in contact with the substrate and a second major surface in contact with the transparent conductor layer, the intermediate layer having an index of refraction that is less than that of the transparent conductor layer and less than that of the substrate; a plurality of lead lines electrically connected to the transparent conductor layers and configured for connecting to controller electronics adapted to determine touch input information based on signals received when a touch input is coupled to the transparent conductors; and an adhesive layer disposed on the transparent conductor layer of each layer stack in the areas covered by the stacks, the adhesive layer also being disposed on the substrate in the areas exposed by the stacks, the adhesive layer having a different material composition than the intermediate layer; wherein a thickness of the transparent conductor layer and a thickness of the intermediate layer are tailored to provide a difference in visible light transmission through the areas covered by the stacks and the areas exposed by the stacks that has a maximum over a range from 400 to 700 nm of about 1% or less and an average over the 400 to 700 nm range of about 0.5% or less.