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Holographic display device

  • US 10,642,220 B2
  • Filed: 08/29/2017
  • Issued: 05/05/2020
  • Est. Priority Date: 01/04/2017
  • Status: Active Grant
First Claim
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1. A holographic display device comprising:

  • a first substrate and a second substrate disposed opposite to each other, wherein a display screen is disposed on the first substrate, and a display surface of the display screen faces the second substrate; and

    four trapezoidal holographic plates, wherein an upper side edge of each trapezoidal holographic plate is movably connected to the first substrate, a lower side edge of each trapezoidal holographic plate is movably connected to the second substrate;

    wherein the holographic display device has a first state and a second state,in the first state, the four trapezoidal holographic plates enclose a four-sided prismoid structure and are supported between the first substrate and the second substrate;

    in the second state, the first substrate and the second substrate are stacked, and the four trapezoidal holographic plates are unfolded to be in a same plane and stacked between the first substrate and the second substrate, andwherein;

    the upper side edge of each trapezoidal holographic plate is connected to the first substrate and is capable of pivoting around a connection;

    a lower side edge of the trapezoidal holographic plate is connected to the second substrate and can slide on the second substrate;

    in a process of forming the first state, the upper side edges of the four trapezoidal holographic plates pivot in a first rotation direction around their connections with the first substrate, and the lower side edges slide to a first position in a direction towards a middle portion of the second substrate so that the four trapezoidal holographic plates enclose the four-sided prismoid structure;

    in a process of forming the second state, the upper side edges of the four trapezoidal holographic plates are pivoted in a second rotation direction about their connections with the first substrate, and the lower side edges slide to a second position in a direction towards a vicinity of periphery of the second substrate, so that the four trapezoidal holographic plates are unfolded to be in the same plane, and are stacked on the second substrate.

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