Devices and methods for enhancing color shift of interferometric modulators
First Claim
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1. An assembly, comprising:
- an interferometric modulator stack, including;
an absorber layer which is at least partially transmissive to incident light;
a reflective layer fixed relative to the absorber layer; and
a spacer layer disposed between the absorber layer and the reflective layer and defining an interferometric gap within the interferometric modulator stack; and
a textured layer disposed on a side of the absorber layer opposite the reflective layer, wherein the textured layer includes at least one optical feature having a curved surface, and wherein the textured layer refracts light in a substantially random pattern.
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Abstract
The color reflected by an interferometric modulator may vary as a function of the angle of view. A range of colors are thus viewable by rotating the interferometric modulator relative to an observer. By placing a textured layer between an observer and an interferometric modulator, a pattern which includes the range of colors may be viewed by the observer, and the range of colors may thus be viewable from a single viewing angle.
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Citations
21 Claims
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1. An assembly, comprising:
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an interferometric modulator stack, including; an absorber layer which is at least partially transmissive to incident light; a reflective layer fixed relative to the absorber layer; and a spacer layer disposed between the absorber layer and the reflective layer and defining an interferometric gap within the interferometric modulator stack; and a textured layer disposed on a side of the absorber layer opposite the reflective layer, wherein the textured layer includes at least one optical feature having a curved surface, and wherein the textured layer refracts light in a substantially random pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification