Polarizing film and producing method thereof, and optical component using the same
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United States of America Patent
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Issued Date -
Aug 10, 2006
app pub date -
Jun 9, 2005
filing date -
Feb 4, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides a polarizing film with high polarization degree and high transmittance, which is directed to the use of polyvinyl alcohol (PVA)-based film by subjecting to a monoaxial multi-step dry-stretch process, thereafter conducting a swelling process in a water-washing tank, cross-dyeing in a dyeing-crosslinking tank comprising an aqueous iodine containing solution, then subjecting to a post stretch process in an stretch tank 05 comprising PVA crosslinking agent, as to obtaining a polarizing film with a transmittance of at least 43% and a polarization degree of at least 98%; and the producing method thereof, a polarizing plate and an optical component produced from the same.
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