Achromatic quarter wave film

Details Achromatic quarter wave film Achromatic quarter wave film

2007-01-30

2007-01-30

Wu, Shean C (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C428S001200, C428S001300, C428S500000, C349S117000, C349S118000, C349S119000, C349S120000, C349S121000, C349S137000, C349S096000, C359S490020, C359S506000

Reexamination Certificate

active

10434366

ABSTRACT:
An achromatic quarter wave film (AQWF) comprising at least one quarter wave film (QWF) and at least one half wave film (HWF), each of said QWF and HWF comprising polymerized or vitrified anisotropic material, to methods and materials for the preparation of the AQWF, its use in optical devices like compensators and liquid crystal displays, and to a liquid crystal display comprising such an AQWF.

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