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Elliptical LCD bar graph with path outline-defining segments

  • US 4,815,824 A
  • Filed: 02/23/1988
  • Issued: 03/28/1989
  • Est. Priority Date: 02/23/1988
  • Status: Expired due to Fees
First Claim
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1. A liquid crystal analog display device that displays along a predetermined path defined by a path outline, comprising:

  • a backplane defining the path outline;

    a plurality of display segments disposed along the path;

    a display segment backplane;

    a plurality of outline segments associated with the display segments for further defining the path outline;

    means for applying an electric potential to the display and outline segments;

    means for applying an electric potential to the path outline backplane so that there is an a.c. field across the path outline segments and the path outline backplane sufficient to maintain the path outline image; and

    means for selectively applying an electric field across said display segments and said display segment backplane for establishing an analog image display.

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