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Dynamic holographic display with cantilever

  • US 5,424,866 A
  • Filed: 08/16/1993
  • Issued: 06/13/1995
  • Est. Priority Date: 01/30/1991
  • Status: Expired due to Fees
First Claim
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1. A method of forming an image comprising steps of:

  • forming an array of cells on the surface of a substrate, each cell comprising a cantilever structure of semiconducting material, each cantilever structure having a free end and a metallic film with a reflective surface insulated from the semiconducting material except at an area adjacent the free end;

    passing electrical currents through said metallic films to the areas adjacent the free ends into the semiconducting material, and back to the substrate from control circuitry connected to said metallic films causing said cantilever structures to head and deform from differing expansion characteristics of the metallic films and the semiconducting material, moving said reflective surfaces; and

    controlling said electrical currents for each cell such that said reflective surfaces move in a manner to reflect illumination to provide an image to an observer.

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