Patent ID: 8765252

Claim:
A thin film device with minimized spatial variation of local mean height comprising: a substrate; at least one first structure disposed on a first area of the substrate, the at least one first structure having a first spatially varying weighted local mean height determined by a layer weighting function, the at least one first structure having a first maximum, a first minimum and a first variation for a given averaging area; and at least one compensation structure disposed on a second area of the substrate separate from the first area, the at least one compensation structure having a second spatially varying weighted local mean height determined by the layer weighting function, having a second maximum different than the first maximum, a second minimum, and a second variation for the given averaging area, the first structure and compensation structure combining to provide a combined structure upon the substrate with minimized spatial variation of a combined weighted local mean height; wherein a plurality of vertically stacked thin film layers are stacked upon each other, and are patterned to define the at least one compensation structure and the at least one first structure, for at least two common thin film layers comprising both the at least one first structure and the at least one compensation structure has a uniform layer height in each structure, and wherein the first of the at least two common layers is disposed directly on the substrate.