Patent ID: 8228449

Claim:
3D glasses for use in a stereoscopic display device that comprises a display panel configured to emit an image light for a right eye and an image light for a left eye and an optical filter comprising a first area configured to adjust a polarized state of the image light for the right eye and a second area configured to adjust a polarized state of the image light for the left eye, wherein the 3D glasses comprise a right-eye area through which the image light for the right eye passes; and a left-eye area through which the image light for the left eye passes; the right-eye area and the left-eye area each comprising a compensation film configured to compensate for a phase difference deviation between the first and second areas of the optical filter, respectively; wherein a phase difference value of the compensation film in the right-eye area and that of the compensation film in the left-eye area are different from each other, and, wherein when a wavelength of the image light emitted from the display panel is λ, a sum of the phase difference value of the compensation film in the right-eye area and the phase difference value of the first area and a sum of the phase difference value of the compensation film in the left-eye area and the phase difference value of the second area are λ/2, respectively.