Visible spectrum modulator arrays

  • US 5,986,796 A
  • Filed: 11/05/1996
  • Issued: 11/16/1999
  • Est. Priority Date: 03/17/1993
  • Status: Expired due to Term
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First Claim
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1. A device for modulating light in the visible spectrum, comprisingan array of interferometric modulation elements formed integrally on a substratecontrol circuitry connected to the array for controlling each of the modulation elements independentlyeach of said modulation elements having two walls that define a cavity, one of the walls being movable relative to the other to define response modes, the cavity operating interferometrically on light within the cavity in at least one of the modes, at least one of the walls serving as a mirror and having at least two layers that cooperate to cause the element to exhibit, in modes in which the cavity is operating interferometrically, a predetermined optical response to light, each of the layers contributing substantially to causing the element to exhibit the predetermined optical response,wherein an optical response of the device in one of the response modes comprises broadband responses for transmission and reflection that respectively span the entire visible range of wavelengths.

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