Full color range interferometric modulation
First Claim
1. A full color range analog controlled interferometric modulation device comprising:
- a transparent substrate;
a transparent fixed-position electrically conductive electrode with a bottom surface overlying the substrate;
a transparent spacer with a thickness overlying the fixed-position electrode;
an induced absorber overlying the spacer;
an optically reflective electrically conductive moveable membrane overlying the induced absorber;
a cavity with a maximum air gap dimension between the induced absorber and the moveable membrane; and
,wherein the spacer thickness is greater than the cavity maximum air gap dimension.
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Accused Products
Abstract
A full color range analog controlled interferometric modulation device is provided. The device includes a transparent substrate, and a transparent fixed-position electrically conductive electrode with a bottom surface overlying the substrate. A transparent spacer overlies the fixed-position electrode, and an induced absorber overlies the spacer. An optically reflective electrically conductive moveable membrane overlies the induced absorber. A cavity is formed between the induced absorber and the moveable membrane having a maximum air gap dimension less than the spacer thickness. In one aspect, the distance from the top surface of the fixed-position electrode to a cavity lower surface is at least twice as great as the cavity maximum air gap dimension. In another aspect, at least one anti-reflective coating (ARC) layer is interposed between the substrate and the fixed-position electrode, and at least one ARC layer is interposed between the fixed-position electrode and the spacer.
25 Citations
22 Claims
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1. A full color range analog controlled interferometric modulation device comprising:
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a transparent substrate; a transparent fixed-position electrically conductive electrode with a bottom surface overlying the substrate; a transparent spacer with a thickness overlying the fixed-position electrode; an induced absorber overlying the spacer; an optically reflective electrically conductive moveable membrane overlying the induced absorber; a cavity with a maximum air gap dimension between the induced absorber and the moveable membrane; and
,wherein the spacer thickness is greater than the cavity maximum air gap dimension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for selectively reflecting pure colors in the visible spectrum using an analog controlled interferometric modulation device, the method comprising:
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providing an interferometric device having a transparent spacer overlying a fixed-position electrode, an induced absorber overlying the spacer, a cavity overlying the induced absorber, and a moveable membrane electrode overlying the cavity, where the distance from a top surface of the fixed-position electrode to a bottom surface of the cavity is greater than a cavity maximum air gap dimension; accepting a full color light spectrum; applying a first voltage to the electrodes; in response to the first voltage, forming a first air gap dimension between the electrodes; reflecting a first color in a visible light spectrum; applying a second voltage to the electrodes, different than the first voltage; in response to the second voltage, forming a second air gap dimension between the electrodes; and reflecting a second color in the visible light spectrum. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification