PLASMON-BASED COLOR TUNABLE DEVICES
First Claim
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1. A pixel structure comprising:
- a first color-tunable layer having an apparent color that depends on a first plasmon resonance in the first color tunable layer;
a first tuning system coupled to control the first color-tunable layer and select a first frequency of the first plasmon resonance;
a shutter in a stack with the color-tunable layer; and
a back plate in the stack.
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Abstract
A color-tunable, reflective, paper-like display utilizes the unique optical properties of nano-engineered metal and metal-dielectric composite structures that exhibit a plasmon resonance. By changing the dielectric properties of a medium in which these structures are embedded, or by changing the spatial relationship of these structures, their optical absorbance and scattering spectra can be tuned. This enables simpler pixel architectures with better performance than is possible with fixed-color technologies. Low power video rate operation can be achieved in a paper-like display.
29 Citations
18 Claims
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1. A pixel structure comprising:
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a first color-tunable layer having an apparent color that depends on a first plasmon resonance in the first color tunable layer; a first tuning system coupled to control the first color-tunable layer and select a first frequency of the first plasmon resonance; a shutter in a stack with the color-tunable layer; and a back plate in the stack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pixel structure comprising:
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a first color-tunable layer having an apparent color that depends on a first plasmon resonance in the first color tunable structure; a first tuning system coupled to control a first frequency of the first plasmon resonance, the first tuning system selecting the first frequency from a first frequency range; a second color-tunable layer having an apparent color that depends on a second plasmon resonance in the second color tunable structure; and a second tuning system coupled to control a second frequency of the second plasmon resonance, the second tuning system selecting the second frequency from a second frequency range. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A light shutter comprising:
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a plurality of discrete structures having a plasmon resonance with a width corresponding to a range of frequencies to be gated by the light shutter; and a tuning system coupled to control a peak frequency of the plasmon resonance, the tuning system being capable of switching the peak frequency between a first frequency within the range and a second frequency outside the range.
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18. The light shutter of claim 41, wherein the range corresponds to visible frequencies of light.
Specification