Liquid crystal cells – elements and systems – Liquid crystal system – Stereoscopic
Reexamination Certificate
2011-02-14
2011-11-15
Nguyen, Hoan (Department: 2871)
Liquid crystal cells, elements and systems
Liquid crystal system
Stereoscopic
C356S012000, C349S061000, C349S062000, C349S065000
Reexamination Certificate
active
08059217
ABSTRACT:
A scanning backlight for a stereoscopic 3D liquid crystal display apparatus includes a light guide formed from a plurality of segments. Each segment has a first side and a second side opposite the first side, and a first surface extending between the first and second sides and a second surface opposite the first surface. The first surface substantially re-directs light and the second surface substantially transmits light. The plurality of segments are arranged substantially in parallel and with the second surfaces transmitting light in substantially the same direction to provide backlighting for a stereoscopic 3D liquid crystal display. A first light source is disposed along the first side of each segment for transmitting light into the light guide from the first side, and a second light source is disposed along the second side of each segment for transmitting light into the light guide from the second side. Each segment first and second light source is selectively turned on and off in a particular pattern and each segment light source selectively transmits light into the light guide first side or light guide second side to form a scanning backlight.
REFERENCES:
patent: 7086771 (2006-08-01), Kawabata et al.
patent: 7226197 (2007-06-01), Hayashi et al.
patent: 2006/0125774 (2006-06-01), Nishigaki
Brott Robert L.
Bryan William J.
Lundin David J.
Meis Michael A.
Schultz John C.
3M Innovative Properties Company
Nguyen Hoan
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