POLARIZING PLATE AND OPTICAL DISPLAY APPARATUS
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United States of America Patent
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Issued Date -
Sep 12, 2024
app pub date -
Mar 1, 2024
filing date -
Mar 8, 2023
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Abstract
A polarizing plate and an optical display apparatus including the same are disclosed. A polarizing plate includes: a polarizer; and a protective layer on at least one surface of the polarizer, and the polarizer includes a polyvinyl alcohol based film containing a dichroic material and contains a zinc cation and a sodium cation, and a ratio of the sodium cation to the zinc cation is in a range from 0.1 to 0.96, and a total content of the zinc cation and the sodium cation is in a range from 500 ppm to 1,500 ppm.
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