POLARIZED LIGHT-EMITTING FILM CONTAINING WATER-SOLUBLE COUMARIN COMPOUND OR SALT THEREOF, POLARIZED LIGHT-EMITTING PLATE, AND DISPLAY DEVICE
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United States of America Patent
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Jan 19, 2023
app pub date -
Jun 26, 2020
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Jun 26, 2020
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Abstract
This polarized light-emitting film contains a water-soluble coumarin compound represented by formula (1) (in formula (1), A represents an optionally substituted coumarin skeleton, X represents a sulfo group or a carboxyl group, and n represents an integer of 1 to 3.) or a salt thereof.
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