Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-03-07
2006-03-07
Nguyen, Dung T. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S096000, C349S098000, C349S118000, C349S119000, C349S120000
Reexamination Certificate
active
07009670
ABSTRACT:
The achromatic quarter-wave film of this invention has a laminated twisted nematic liquid crystal film sandwiched between two uniaxial polymer films to provide a optical component which converts linearly polarized light into circularly polarized radiation which upon reflection back through said optical component is blocked from outward radiation by the polarizer for the initial incident wide spectrum light thus realizing wider broadband width for full color flat panel displays.
REFERENCES:
patent: 5863457 (1999-01-01), Hasebe et al.
patent: 6204904 (2001-03-01), Tillin et al.
S. Pancharatnam,Proceedings of the Indian Academy of Science,Sec. A., vol. 41, 130-136 (1955).
Tae-Hoon Yoon, Gi-Dong Lee and Jae Chang Kim,Nontwist quarter-wave liquid-crystal cell for a high-constrast reflective display,vol. 25, No. 20/Optics Letters, Oct. 15, 2000.
Huang Yuhua
Wu Shin-Tson
Wu Thomas X.
Law Offices of Brian S. Steinberger , P.A.
Nguyen Dung T.
Research Foundation of the University of Central Florida, Inc.
Steinberger Brian S.
Vu Phu
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