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US 7,742,124 B2Granted
Optical retarder
AssigneePuredepth Limited
InventorGareth Paul Bell
Life of this patent
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Abstract
The present invention (1) includes a multi-focal plane display with two or more at least partially overlapping screens (2, 3) with a first order optical retarder (5) interposed therebetween. The invention removes the undersirable presence of colored interference fringes while also providing a means of addressing the polarization incompatibility between adjacent LCD display screens (2, 3).
Claims34
A multi-component display comprising:
- a first display screen comprising a first plurality of pixels, wherein said first display screen is operable to display graphical objects using said first plurality of pixels, and wherein each of said first plurality of pixels comprises a respective red color filter, a respective green color filter and a respective blue color filter;
- a second display screen comprising a second plurality of pixels, wherein said second display screen is operable to display graphical objects using said second plurality of pixels, wherein said second display screen overlaps said first display screen;
- a first-order optical retarder disposed between said first and second display screens;
- an optical component disposed between said first and second display screens;
- and
- a light source for illuminating said first and second display screens.
3 more elements
A method of manufacturing a multi-component display, said method comprising:
- positioning a first display screen and a second display screen in an overlapping arrangement, wherein said first display screen is operable to display graphical objects using a first plurality of pixels of said first display screen, and wherein each of said first plurality of pixels comprises a respective red color filter, a respective green color filter and a respective blue color filter;
- disposing an optical component between said first and second display screens;
- disposing a first-order optical retarder between said first and second display screens;
- and
- disposing a light source behind a display screen selected from said first and second display screens.
2 more elements
Dependencies are inferred from the claim text.