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Optical device including optical modulation device, and driving method thereof

  • US 10,354,576 B2
  • Filed: 03/01/2016
  • Issued: 07/16/2019
  • Est. Priority Date: 03/17/2015
  • Status: Active Grant
First Claim
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1. An optical device, comprising:

  • a display panel that displays an image;

    a phase retardation plate disposed on the display panel that includes a quarter-wave plate; and

    an optical modulation device that includes a first plate and second plate disposed to face each other, a liquid crystal layer disposed between the first plate and the second plate and that includes a plurality of liquid crystal molecules, and a plurality of unit areas,wherein the first plate includes a plurality of lower electrodes that extend in a first direction and are arranged in a second direction that crosses the first direction, the second plate includes an upper electrode,wherein light emitted from the display panel is received by the optical modulation device, andwhen the display panel displays a first image during a first subframe, the optical modulation device applies a first driving signal to the plurality of lower electrodes and changes a circular polarization direction of light received from the phase retardation plate, andwhen the display panel displays a second image during a second subframe following the first subframe, the optical modulation device applies a second driving signal different from the first driving signal to the plurality of lower electrodes and maintains the circular polarization direction of light received from the phase retardation plate.

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