Patent ID: 7920216
Filing Date: 2011-04-05
Classification: G02B,G02F

Abstract:
1. A stereo image display device, having a switch function between a first display direction and a second display direction, comprising: a polarized light source module, for providing a polarized light; a first light grating unit, disposed on a light path of the polarized light, wherein when the first light grating unit is activated, the polarized light is modulated to form a first grating light source for outputting light in every two columns in the first display direction, and when the first light grating unit is turned off, all the polarized light substantially passes through; a second light grating unit, disposed on the light path of the polarized light, wherein when the second light grating unit is activated, the polarized light is modulated to form a second grating light source for outputting light in every two rows in the second display direction, and when the second light grating unit is turned off, all the polarized light substantially passes through, and when the first light grating unit generates the first grating light source, the second light grating unit is controlled to maintain a state of the first grating light source; and an image display unit, displaying a first image at odd columns or rows of pixels and a second image at even columns or rows of pixels based on a light output from the light grating units, wherein the first light grating unit comprises: wherein the second light grating unit comprises: