LCD with reduced canopy reflection

Details LCD with reduced canopy reflection LCD with reduced canopy reflection

1996-11-07

1998-02-03

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 75, 349102, G02F 11347, G02F 11335

Patent

active

057150281

ABSTRACT:
A liquid crystal display and corresponding method are provided for reducing display image reflections off of a reflection point on an external medium (e.g. cockpit canopy or automotive windshield). A retarder is provided on the front side of the display so that the polarization direction of the display image is substantially parallel to the plane of incidence when the image reaches the reflection point. Additionally, the angle of incidence .THETA..sub.i is substantially matched to the Brewster angle .THETA..sub.p in order to maximize the reduction of reflection at the reflection point. The retarder has a retardation value of from about 220-320 nm according to certain embodiments, and is a 1/2 .lambda. retarder according to preferred embodiments.

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"Optics" by Eugene Hecht, pp. 296-300, 1987.

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