Light-Emitting Device, Electronic Device, and Lighting Device

摘要

A light-emitting device, an electronic device, or a lighting device with low power consumption and high reliability is provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element. The first to fourth light-emitting elements include the same EL layer between an anode and a cathode. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a fluorescent substance. The peak wavelength of an emission spectrum of the fluorescent substance in a toluene solution of the fluorescent substance is 440 nm to 460 nm, preferably 440 nm to 455 nm. The second light-emitting layer contains a phosphorescent substance. The first light-emitting element exhibits blue emission. The second light-emitting element exhibits green emission. The third light-emitting element exhibits red emission. The fourth light-emitting element exhibits yellow emission.

主权项

1. A light-emitting device comprising:
a first light-emitting element emitting blue light; a second light-emitting element emitting green light; a third light-emitting element emitting red light; and a fourth light-emitting element, wherein the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element comprise the same EL layer, wherein the EL layer comprises a first EL layer comprising a first light-emitting layer, a second EL layer comprising a second light-emitting layer, and a charge-generation layer between the first EL layer and the second EL layer, wherein the first light-emitting layer includes a fluorescent substance, wherein the second light-emitting layer includes a phosphorescent substance, and wherein the fluorescent substance is an organic compound in which each of two benzo[b]naphtho[1,2-d]furanylamine skeletons is independently bonded to a pyrene skeleton.