Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Apurba Pradhan0
Kim Leong Tan0
Andrew Thomas Taylor0
Date of Patent
March 2, 2010
0Patent Application Number
115500410
Date Filed
October 17, 2006
0Patent Primary Examiner
Patent abstract
The invention relates to a method of electronic contrast enhancement for an LCD panel for use in an imaging device. The method comprises the step of coupling the LCD panel with a trim retarder in a pre-determined azimuthal orientation for at least partially compensating the residual in-plane retardance, followed by the step of non-mechanical fine-tuning of a dark state of the LCD panel. In the preferred embodiment, the fine-tuning of the dark state of the LCD panel is realized by adjusting the dark-state magnitude of the LC voltage. The method can be used in batch, e.g. wafer-level manufacturing of integrated trim retarder/LCD panels assemblies that can be electronically tuned to provide high on/off contrast.
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