Capacitive touch sensor laminate for display panel device

摘要

A capacitive touch sensor laminate for use in a display panel device includes: a dielectric central substrate structure made of a transparent resin material and formed to have flat surfaces, respectively, on opposite sides thereof; a at least one-layer structured coat layer made of a transparent material, formed on each of the flat surfaces, and including at least one refractive index adjusting layer for suppressing visibility of an electrode pattern formed by the transparent electrically conductive layer; and a transparent electrically conductive layer formed on and in adjacent relation to the coat layer. The at least one-layer structured coat layers formed on respective ones of the flat surfaces are configured such that thicknesses of corresponding layers therein on respective opposite sides of the dielectric central substrate structure are set to allow the corresponding layers to become mutually symmetrical across the dielectric central substrate structure.

主权项

1. A capacitive touch sensor laminate for use in a display panel device having a touch input function, comprising:
a dielectric central substrate structure made of a transparent resin material and formed to have flat surfaces, respectively, on opposite sides thereof; an at least one-layer structured coat layer made of a transparent material and formed on each of the flat surfaces; and a transparent electrically conductive layer formed on and in adjacent relation to the coat layer; wherein; each of the at least one-layer structured coat layers comprises at least one refractive index adjusting layer for suppressing visibility of an electrode pattern formed by the transparent electrically conductive layer, each of the at least one-layer structured coat layers formed on respective ones of the flat surfaces are configured such that thicknesses of corresponding layers therein on respective opposite sides of the dielectric central substrate structure are set to allow the corresponding layers to become mutually symmetrical across the dielectric central substrate structure, each of the refractive index adjusting layers comprises a first refractive index adjusting undercoat layer, and a second refractive index adjusting undercoat layer formed on the first refractive index adjusting undercoat layer, wherein the first refractive index adjusting undercoat layer is between the dielectric central substrate structure and the second refractive index adjusting undercoat layer, the first refractive index adjusting undercoat layer has a refractive index greater than that of the second refractive index adjusting undercoat layer, and the first refractive index adjusting undercoat layer has a thickness which is 35 nanometers (nm) or less, and the second refractive index adjusting undercoat layer has a thickness less than that of the first undercoat layer.