| abstract |
Organic electroluminescence using the coumarin compound represented by the general formula (1), the method of producing the coumarin compound represented by the general formula (1) via the step of reacting the compound having an aldehyde group and the compound having an active methylene group and the coumarin compound represented by the general formula (1) An organic light emitting display device and an organic light emitting display device, and a display panel and an information display device using the organic light emitting display device.n n n (Formula 1)n n n n n n n n (In General Formula 1, phi represents an aromatic ring, a heterocycle, or a combination thereof, Z represents the same or different coumarin residues represented by the general formula (2), and m is an integer of 2 or more.)n n n (Formula 2)n n n n n n n n n Coumarin Compound |