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US 7,116,387 B2Granted
Display device for automatically switching between 2D and 3D images
AssigneeIndustrial Technology Research Institute
InventorsChao-Hsu Tsai, Nai-Yueh Wang
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Abstract
A display device includes a spatial light modulator, two microretarders of stripes superposed with one another and placed behind the spatial light modulator, a polarizer placed behind the two microretarders, a back light placed behind the polarizer, first and second driving devices and a carrier. The horizontal relative movement of the two microretarders is able to selectively display a 2D image and a 3D image.
Claims5
A display device comprising:
- a spatial light modulator, wherein the spatial light modulator is an LCD panel;
- a first microretarder and a second microretarder superposed with the first microretarder and placed behind the spatial light modulator, wherein each of the two microretarders has multiple vertical stripes, a portion of the vertical stripes of one of the microretarders has a phase retardation π and a portion of the vertical stripes of the other microretarder has a phase retardation −π, wherein other portions of the vertical stripes of the two microretarders have a phase retardation of 0;
- a polarizer placed behind the two microretarders;
- a back light placed behind the polarizer;
- a first driving device connected to the first microretarder to move the first microretarder and a second driving device connected to a combination of the first microretarder and the first driving device to move the combination;
- and
- a carrier, wherein relative horizontal movement of the two microretarders results in the display device to alternatively display a 2D image and a 3D image.
4 more elements
Dependencies are inferred from the claim text.