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System and method for multi-level brightness in interferometric modulation

  • US 7,492,503 B2
  • Filed: 09/25/2007
  • Issued: 02/17/2009
  • Est. Priority Date: 09/27/2004
  • Status: Expired due to Fees
First Claim
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1. A display device, comprising:

  • a first electrode having a substantially non-uniform width; and

    a plurality of second electrodes separated from the first electrode, wherein light in cavities between the first and second electrodes is interferometrically modulated at least in part by at least one of the electrodes, and wherein at least two of the second electrodes respectively overlap areas of the first electrode, the overlapped areas each being respective different sizes,wherein the second electrodes are configured to selectively actuate in response to electrostatic forces between the first and second electrodes, and a brightness of the display device as viewed from a viewing direction is selectively adjusted based on the selective actuation of the second electrodes.

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