Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 10, 2007
0Patent Application Number
109785460
Date Filed
November 1, 2004
0Patent Primary Examiner
Patent abstract
A privacy screen for a display (e.g., a LCD) 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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