Patent ID: 8111445

Claim:
A display device comprising: a substrate; an array of display pixels configured to form an image, each display pixel comprising at least one individually addressable light-modulating element arranged over the substrate and configured to interferometrically modulate incident visible light, said at least one individually addressable light-modulating element comprising: an optical stack including a reflective layer disposed over the substrate; a movable element; and an air gap between the reflective layer and the movable element forming an optical cavity that changes size with movement of said movable element thereby interferometrically modulating incident visible light that forms part of the image; and an optical compensation structure; wherein the array of display pixels is arranged between the substrate and the optical compensation structure, and wherein for said at least one individually addressable light-modulating element said optical stack is closer to the substrate and said moveable element is closer to said optical compensation structure and an optical path extending from the optical stack to the optical compensation structure passes through only one air gap that changes size with movement of said moveable element thereby interferometrically modulating incident visible light that forms part of the image.