Interferometric optical modulator with broadband reflection characteristics
First Claim
1. An optical device comprising:
- an optical stack comprising;
a first layer having a first refractive index, the first layer having a thickness in a range between about 700 angstroms and about 1350 angstroms;
a second layer over the first layer, the second layer having a second refractive index less than the first refractive index, the second layer having a thickness in a range between about 900 angstroms and about 1400 angstroms; and
a third layer over the second layer, the third layer having a third refractive index larger than the second refractive index; and
a fourth layer that is at least partially optically absorptive,wherein the optical stack and the fourth layer are a first distance from one another when the device is in a first state and are a second distance from one another when the device is in a second state, the first distance different from the second distance.
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Abstract
An optical device suitable for forming a pixel in a video display. The optical device includes a first layer having a first refractive index; a second layer over the first layer, the second layer having a second refractive index less than the first refractive index; and a third layer over the second layer, the third layer having a third refractive index larger than the second refractive index; and a fourth layer that is at least partially optically absorptive, wherein the optical stack and the fourth layer are a first distance from one another when the device is in a first state and are a second distance from one another when the device is in a second state, the first distance different from the second distance.
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Citations
31 Claims
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1. An optical device comprising:
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an optical stack comprising; a first layer having a first refractive index, the first layer having a thickness in a range between about 700 angstroms and about 1350 angstroms; a second layer over the first layer, the second layer having a second refractive index less than the first refractive index, the second layer having a thickness in a range between about 900 angstroms and about 1400 angstroms; and a third layer over the second layer, the third layer having a third refractive index larger than the second refractive index; and a fourth layer that is at least partially optically absorptive, wherein the optical stack and the fourth layer are a first distance from one another when the device is in a first state and are a second distance from one another when the device is in a second state, the first distance different from the second distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An optical device comprising:
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first means for reflecting and transmitting light, the first means having a first refractive index, the first means having a thickness in a range between about 700 angstroms and about 1350 angstroms; second means for reflecting and transmitting light, the second means over the first means, the second means having a second refractive index less than the first refractive index, the second means having a thickness in a range between about 900 angstroms and about 1400 angstroms; and third means for reflecting and transmitting light, the third means over the second means, the third means having a third refractive index larger than the second refractive index; and fourth means for reflecting and absorbing light, wherein the third means and the fourth means are a first distance from one another when the device is in a first state and are a second distance from one another when the device is in a second state, the first distance different from the second distance. - View Dependent Claims (30, 31)
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Specification