18987755. ORGANIC LIGHT-EMITTING ELEMENT AND DISPLAY APPARATUS INCLUDING THE SAME (CANON KABUSHIKI KAISHA)
ORGANIC LIGHT-EMITTING ELEMENT AND DISPLAY APPARATUS INCLUDING THE SAME
Organization Name
Inventor(s)
HITOSHI Nagashima of Kanagawa JP
MASAHITO Miyabe of Kanagawa JP
HIROKAZU Miyashita of Miyagi JP
ORGANIC LIGHT-EMITTING ELEMENT AND DISPLAY APPARATUS INCLUDING THE SAME
This abstract first appeared for US patent application 18987755 titled 'ORGANIC LIGHT-EMITTING ELEMENT AND DISPLAY APPARATUS INCLUDING THE SAME
Original Abstract Submitted
An organic light-emitting element including a first electrode and a second electrode, and an organic compound layer disposed between the first electrode and the second electrode. The organic compound layer includes a light-emitting layer. The light-emitting layer contains at least a first organic compound, a second organic compound, and a luminescent compound that emits phosphorescence. Lowest excited triplet energies of the first organic compound and the second organic compound are higher than a lowest excited triplet energy of the luminescent compound. In the first organic compound and the second organic compound, all freely rotatable single bonds are carbon-carbon bonds. The organic light-emitting element satisfies a relation of formula (1):