Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – Alignment layer of specified composition
Reexamination Certificate
2006-05-30
2006-05-30
Dixon, Merrick (Department: 1774)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
Alignment layer of specified composition
C428S001100, C428S001310, C349S194000, C349S008000, C349S016000, C359S489040, C359S464000, C359S506000, C359S601000
Reexamination Certificate
active
07052746
ABSTRACT:
A privacy screen for a display (e.g., a LCD) includes having a polarizing film and a birefringent film is described. The privacy screen transmits substantial amounts of light emanating from the display in an orthogonal (or near-orthogonal) direction while not transmitting substantial amounts of horizontal, non-orthogonal light emanating from the display. In this manner, a privacy effect results in that the display is viewable by someone only when that someone is essentially directly in front of the display.
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Dixon Merrick
E. I. du Pont de Nemour and Company
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