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;
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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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
38 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; 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. - 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, 29, 30)
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31. A method of forming an optical device, comprising:
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forming a first layer, the first layer having a first refractive index; forming a second layer over the first layer, the second layer having a second refractive index less than the first refractive index; forming a third layer over the second layer, the third layer having a third refractive index larger than the second refractive index; forming a sacrificial layer over the third layer; forming a fourth layer that is at least partially optically absorptive over the sacrificial layer; and removing the sacrificial layer. - View Dependent Claims (32)
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33. A method of modulating light, comprising:
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providing an optical device comprising; an optical stack comprising; 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; applying a first voltage to the device to place the device in the first state; and
applying a second voltage to the device to place the device in the second state. - View Dependent Claims (34, 35)
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36. An optical device comprising:
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first means for reflecting and transmitting light, the first means having a first refractive index; 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; 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 (37, 38)
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Specification