Method of producing elliptically polarizing plate and image...

Details Method of producing elliptically polarizing plate and image... Method of producing elliptically polarizing plate and image...

2006-02-15

2008-12-23

Healy, Brian (Department: 2883)

Liquid crystal cells, elements and systems

Nominal manufacturing methods or post manufacturing...

C349S087000, C349S096000, C349S117000, C349S128000, C349S129000, C349S191000

Reexamination Certificate

active

07468777

ABSTRACT:
The present invention provides a method of producing an elliptically polarizing plate including the steps of: forming a first birefringent layer on a surface of a transparent protective film; laminating a polarizer on a surface of the transparent protective film; forming a second birefringent layer on a surface of the first birefringent layer; and forming a third birefringent layer on a surface of the second birefringent layer. The first birefringent layer is arranged on the opposite side against the polarizer with respect to the transparent protective film. The step of forming the first birefringent layer includes the steps of: applying a liquid crystal material onto a substrate subjected to an alignment treatment; treating the applied liquid crystal material, so as to form the first birefringent layer on the substrate; and transferring the first birefringent layer onto a surface of the transparent protective film.

REFERENCES:
patent: 5953083 (1999-09-01), Sharp
patent: 6835796 (2004-12-01), Sakamoto et al.
patent: 3174367 (2001-03-01), None
patent: 2003-195037 (2003-07-01), None

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