Display system
Assignee3M Innovative Properties Company
InventorsKristopher J. Derks, Shannon L. Siefken, Tao Liu, Nathaniel K. Naismith
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Abstract
A display system includes an extended illumination source, a first liquid crystal assembly disposed on the extended illumination source, and a second liquid crystal assembly disposed on the first liquid crystal display assembly. The first liquid crystal assembly includes a bottom reflective polarizer, a top reflective polarizer, and a bottom liquid crystal panel disposed between the top and bottom reflective polarizers. The second liquid crystal assembly includes a top absorbing polarizer, and a top liquid crystal panel disposed between the top absorbing polarizer and the first liquid crystal assembly.
Claims6
An extended polarized light source system, comprising:
- an extended illumination source comprising:
- a first extended emission surface;
- a reflecting layer;
- an optically diffusive layer facing, and spaced apart from, the reflecting layer, the reflecting layer and the optically diffusive layer defining an optical cavity therebetween;
- and
- at least one light source providing light to the optical cavity;
- and
- a liquid crystal assembly disposed on the extended illumination source and comprising:
- a second extended emission surface substantially co-extensive with the first extended emission surface;
- and
- a pixelated liquid crystal panel disposed between first and second reflective polarizers, wherein:
- a first light exiting the extended illumination source from the first extended emission surface has a first intensity variation across the first extended emission surface, the liquid crystal assembly receiving the first light and transmitting at least a portion of the received light, the transmitted light exiting the liquid crystal assembly from the second extended emission surface having a second intensity variation across the second extended emission surface, the second intensity variation less than the first intensity variation.
Dependencies are inferred from the claim text.