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US 12,292,589 B2Granted
Polarized light-emitting film containing water-soluble coumarin compound or salt thereof, polarized light-emitting plate, and display device
AssigneeNippon Kayaku Kabushiki Kaisha
InventorsRyoutarou Morita, Noriaki Mochizuki
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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.
Claims13
A polarized light-emitting film comprising a water-soluble coumarin compound represented by the following formula (2):
- wherein R2 represents a hydrocarbon group having 1 to 10 carbon atoms, Q represents a sulfur atom, an oxygen atom, or a nitrogen atom, and n is an integer from 1 to 3,
- or a salt thereof.
Dependencies are inferred from the claim text.