Patent ID: 11930703
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A light-emitting element comprising:
a pair of electrodes; and
a light-emitting layer between the pair of electrodes, the light-emitting layer comprising a light-emitting substance and a host material,
wherein the light-emitting substance comprises an organic compound having a molecular weight of less than or equal to 5000 and represented by General Formula (G1):, wherein X1 and X2 independently represent an oxygen atom or a sulfur atom,
wherein at least one of R1 to R12 represents a substituent having 6 to 100 carbon atoms,
wherein the others of R1 to R12 independently represent hydrogen or a substituent having 1 to 25 carbon atoms,
wherein the substituent having 6 to 100 carbon atoms is a substituent represented by General Formula (g2):, , and
wherein R40 to R43 and R45 to R49 independently represent hydrogen, an aliphatic hydrocarbon group having 1 to 10 carbon atoms, an alicyclic hydrocarbon group having 3 to 20 carbon atoms, an aromatic hydrocarbon group having 6 to 25 carbon atoms, or a heterocyclic group having 1 to 25 carbon atoms.