Patent ID: 8284241

Claim:
An autostereoscopic display apparatus comprising: a backlight unit; a polarizing plate disposed in front of the backlight unit; a display panel which displays a left eye image and a right eye image by interlacing pixel lines of the left and right eye images alternately and sequentially; a lenticular lens sheet, disposed between the polarizing plate and the display panel, which separates light emitted from the backlight unit into a left eye viewing zone and a right eye viewing zone; and a spatial light modulator disposed between the polarizing plate and the lenticular lens sheet and which switches between first, second, and third statuses in which the polarization direction of incident light changes; a first birefringent element array, disposed between the spatial light modulator and the lenticular lens sheet, comprising a plurality of first and second vertical birefringent elements that alternate in the horizontal direction; and a second birefringent element array disposed between the lenticular lens sheet and the display panel, comprising a plurality of third and fourth horizontal birefringent elements that alternate in the vertical direction.