Device and method for manipulation of thermal response in a modulator
First Claim
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1. A display device, comprising:
- a plurality of display elements each comprising an interferometric light modulating device configured to produce interference resulting in at least one of the colors red, green and blue, each interferometric light modulating device comprising;
a partially-reflective part;
a reflective thermally-responsive movable part which moves relative to the partially-reflective part in response to changes of temperature, the movable part configured to reflect light through the partially-reflective part; and
a heat source configured to heat the movable part to vary a distance between the partially-reflective part and the movable part,wherein the distance is different for interferometric light modulating devices corresponding to different ones of the colors red, green, and blue, the distance having a value to cause interference to result in one of the colors red, green and blue.
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Abstract
By varying the spacing between two surfaces, one of which is disposed in front of the other, an interferometric modulator selectively creates constructive and/or destructive interference between light waves reflecting off the two surfaces. The desired spacing can be achieved by deforming one or both surfaces. A heating element associated with a particular surface causes the deformation by heating the material that forms one or both of the surfaces. By varying the amount of applied heat, the amount of deformation is varied, thus allowing the distance between the surfaces to be controlled and thereby creating constructive and/or destructive interference as desired.
511 Citations
21 Claims
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1. A display device, comprising:
a plurality of display elements each comprising an interferometric light modulating device configured to produce interference resulting in at least one of the colors red, green and blue, each interferometric light modulating device comprising; a partially-reflective part; a reflective thermally-responsive movable part which moves relative to the partially-reflective part in response to changes of temperature, the movable part configured to reflect light through the partially-reflective part; and a heat source configured to heat the movable part to vary a distance between the partially-reflective part and the movable part, wherein the distance is different for interferometric light modulating devices corresponding to different ones of the colors red, green, and blue, the distance having a value to cause interference to result in one of the colors red, green and blue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
Specification