Optical filter for display, process for the preparation of the same, and display and plasma display panel provided with the optical filter

Abstract

[Problem to be Solved] To provide an optical filter for display provided with an earth electrode which can be easily prepared, and a process for the preparation thereof. [Means for Solving Problem] An optical filter for display provided with an electrode part of a conductive metal layer comprising a transparent substrate, the conductive metal layer provided on a surface of the substrate, and a functional layer provided on a surface of the conductive layer, wherein the conductive metal layer is exposed in a large number of island-shaped areas at a side edge or its vicinity of the functional layer, and the number of the island-shaped areas is 25 to 250/cm2 in an intermittent band-shaped region and an area ratio of the island-shaped areas is 2 to 50% based on the intermittent band-shaped region, the intermittent band-shaped region being defined by a band-shaped area having a perpendicular width between the most inside point and the most outside point of the island-shaped areas, and a process for the preparation thereof.

Dependencies are inferred from the claim text.