Patent ID: 9651736
Date: 2017-05-16
CPC Classifications: B05D,G02B,G03F,Y10T

Claim:
1. An apparatus, comprising: a substrate including a first surface region which separates neighboring second surface regions from one another, wherein the first surface region has a first wettability coefficient and the second surface regions have a second wettability coefficient, wherein the second wettability coefficient causes the second surface regions to be hydrophilic and the first wettability coefficient causes the first surface region to be hydrophobic relative to the second surface regions, wherein the first surface region corresponds to an upper surface of the substrate, and wherein the second surface regions comprise a landing pad surface having a different surface elevation relative to the upper surface of the substrate; and an optical structure which is arranged on at least one of the second surface regions but which does not cover the first surface region, the optical structure having sidewalls that are substantially aligned to an interface between the first and second surface regions.