发明名称 |
Iodine-Type Polarizer, Polarizing Place and Method for Producing Thereof |
摘要 |
There is provided a method for producing a polarizer having improved cross transmittance. The method for producing a polarizer includes: dyeing a polyvinyl alcohol (PVA)-based film with molecular iodine by immersing the PVA-based film in an aqueous iodine solution (a dyeing step); absorbing the molecular iodine into the PVA-based film using an aqueous boric acid solution (a cross-linking step); arranging the molecular iodine in the certain direction by stretching the PVA-based film in a certain direction (an stretching step); and drying, in an oven, the PVA-based film in which the molecular iodine is oriented; wherein a phosphate compound is added to the iodine aqueous solution (the dyeing step) or the aqueous boric acid solution(the stretching step) so that a weight ratio of the boric acid:the phosphate compound is in a range of 1:0.1 to 1:10.
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申请公布号 |
US2009290215(A1) |
申请公布日期 |
2009.11.26 |
申请号 |
US20080226104 |
申请日期 |
2008.02.04 |
申请人 |
KWON KI-OK;RAH KYUN-IL;KIM SEUNG-AE;SHON JEONG-WOO |
发明人 |
KWON KI-OK;RAH KYUN-IL;KIM SEUNG-AE;SHON JEONG-WOO |
分类号 |
G02B1/08;B31B1/60;D06P7/00 |
主分类号 |
G02B1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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