3D glasses and 3D video playing apparatus

  • US 8,625,036 B2
  • Filed: 10/12/2011
  • Issued: 01/07/2014
  • Est. Priority Date: 07/26/2011
  • Status: Active Grant
First Claim
Patent Images

1. A 3D video playing apparatus, comprising a 3D display device and a pair of 3D glasses, whereinthe 3D display device comprises a liquid crystal display, a first polarizer and a first quarter-wave phase plate, a surface of the first polarizer abuts on a light exiting surface of the LCD, the first polarizer matches with the light exiting surface of the LCD in both size and shape, the first quarter-wave phase plate is disposed on the other surface of the first polarizer and matches with the light exiting surface of the LCD in both size and shape;

  • the pair of 3D glasses comprises a left glass and a right glass in symmetry with each other, each of the glasses comprises a liquid crystal layer as well as a second quarter-wave phase plate and a second polarizer disposed at two sides of the liquid crystal layer respectively, and further a second half-wave phase plate disposed between the second quarter-wave phase plate and the liquid crystal layer, wherein the second quarter-wave phase plate, the second half-wave phase plate, and the second polarizer match with the liquid crystal layer in both size and shape; and

    the pair of 3D glasses is located at the side of the light exiting surface of the 3D display device and in a light path of the 3D display device with the second quarter-wave phase plates of the pair of 3D glasses facing towards the light exiting surface of the 3D display device.

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