Granted Patent B2

US 12,534,434 · App. 16/636,732 · Granted Jan 27, 2026

Inventors: Kyoko Takeda (Kanagawa, JP); Harue Osaka (Kanagawa, JP); Satoshi Seo (Kanagawa, JP); Tsunenori Suzuki (Kanagawa, JP); Naoaki Hashimoto (Kanagawa, JP)

Assignee: Semiconductor Energy Laboratory Co., Ltd.

C07D209/82C07D407/14H10K85/636H10K85/6572H10K85/6574H10K50/11

Abstract

Claims (37)

1 . A light-emitting element comprising a light-emitting layer between a pair of electrodes,

wherein the light-emitting layer comprises a host material and a guest material,

wherein the light-emitting layer emits light derived from the guest material,

wherein the guest material is an organic compound represented by General Formula (G2), and

wherein in General Formula (G2):

each of Ar 1 and Ar 3 to Ar 8 independently represents a substituted or unsubstituted arylene group having 6 to 25 carbon atoms;

Ar 2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms;

each of a, d, e, f, and g independently represents an integer of 0 to 3, and each of b and c independently represents an integer of 1 to 3;

each of Ar 9 to Ar 12 independently represents a substituted or unsubstituted aryl group having 6 to 100 carbon atoms or a substituted or unsubstituted heteroaryl group having 3 to 100 carbon atoms; and

each of R 1 to R 10 independently represents hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 7 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.

2 . The light-emitting element according to claim 1 ,

wherein the guest material is an organic compound represented by General Formula (G3), and

wherein:

each of R 11 to R 15 independently represents hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 7 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.

3 . The light-emitting element according to claim 1 ,

wherein each of Ar 9 and Ar 11 is independently any one of a substituted or unsubstituted phenyl group, biphenyl group, naphthyl group, triphenylyl group, fluorenyl group, carbazolyl group, dibenzothiophenyl group, dibenzofuranyl group, benzofluorenyl group, benzocarbazolyl group, naphthobenzothiophenyl group, naphthobenzofuranyl group, dibenzofluorenyl group, dibenzocarbazolyl group, dinaphthothiophenyl group, dinaphthofuranyl group, and phenanthryl group.

4 . The light-emitting element according to claim 1 ,

wherein each of Ar 10 and Ar 12 independently represents any one of substituents represented by General Formulae (Ht-1) to (Ht-7),

wherein in General Formulae (Ht-3) and (Ht-4):

X represents oxygen or sulfur, and

wherein in General Formulae (Ht-1) to (Ht-7):

any one of R 16 to R 21 , any one of R 22 to R 31 , any one of R 32 to R 39 , any one of R 40 to R 48 , any one of R 49 to R 57 , any one of R 58 to R 67 , and any one of R 68 to R 77 each represent a single bond to Ar 6 or Ar 8 ; and

the other R 16 to R 85 each independently represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 7 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.

5 . A electronic device comprising:

the light-emitting element according to claim 1 .

6 . A display device comprising:

the electronic device according to claim 5 ; and

at least one of a color filter and a transistor.

7 . A light-emitting element comprising a light-emitting layer between a pair of electrodes,

wherein the light-emitting layer comprises a host material and a guest material,

wherein the light-emitting layer emits light derived from the guest material, and

wherein the guest material is an organic compound represented by Structural Formula (168),

8 . A electronic device comprising:

the light-emitting element according to claim 7 .

9 . A display device comprising:

the electronic device according to claim 8 ; and

at least one of a color filter and a transistor.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (53)