Liquid crystal display device using cholesteric liquid crystal

Details Liquid crystal display device using cholesteric liquid crystal Liquid crystal display device using cholesteric liquid crystal

2007-08-07

2007-08-07

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S096000, C349S097000, C349S114000

Reexamination Certificate

active

10614293

ABSTRACT:
A liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a retardation layer on an outer surface of the first substrate; a linear polarizing layer on the retardation layer; a cholesteric liquid crystal color filter (CCF) layer on an inner surface of the second substrate; a liquid crystal layer between the first substrate and the CCF layer; a first cholesteric liquid crystal (CLC) polarizing layer on an outer surface of the second substrate, the first CLC polarizing layer having a first helical pitch of a first circular polarization direction; a second cholesteric liquid crystal (CLC) polarizing layer on the first CLC layer, the second CLC polarizing layer having a second helical pitch of a second circular polarization direction opposite to the first circular polarization direction; and a backlight unit outside the second CLC layer.

REFERENCES:
patent: 6574044 (2003-06-01), Sahouani et al.
patent: 6597418 (2003-07-01), Moon et al.
patent: 2001/0026335 (2001-10-01), Moon
patent: 2002/0012085 (2002-01-01), Honda et al.
patent: 2002/0036735 (2002-03-01), Arakawa et al.
patent: 2004/0008301 (2004-01-01), Yoon
patent: 2001111863 (2001-12-01), None

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