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US 9,067,952 B2Granted
Thiadiazole, light-emitting element, light-emitting apparatus, authentication apparatus, and electronic device
AssigneeSeiko Epson Corporation
InventorsHidetoshi Yamamoto, Tetsuji Fujita
Life of this patent
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Abstract
The thiadiazole represented by formula (2) or (4), when used as a light-emitting material in a light-emitting element, allows the light-emitting element to emit near-infrared light: in formulae (2) and (4), each R independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group. There may be a ring formed by a carbon linkage between two adjacent R's.
Claims19
A thiadiazole represented by formula D-1 or (4):
- wherein each R independently represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a ring group, wherein the ring group includes two adjacent carbon atoms that bond to each other.
A light-emitting element comprising:
- an anode;
- a cathode;
- a light-emitting layer that is disposed between the anode and the cathode and, when electric current flows between the anode and the cathode, emits light;
- and
- an electron transport layer, which is a layer having the capability of transporting electrons, provided between the cathode and the light-emitting layer so as to be in contact with the light-emitting layer,
- wherein the electron transport layer contains a compound having an azaindolizine skeleton and an anthracene skeleton in the molecule as an electron transport material, and
- the light-emitting layer contains a compound represented by formula (1) as a light-emitting material and a compound represented by formula IRH-1 as a host material for the light-emitting material;
- where each A independently represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryl amino group, or a substituted or unsubstituted triarylamine;
- where n represents a natural number of 1 to 12 and R is independently a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aryl amino group.
6 more elements
A light-emitting element comprising:
- an anode;
- a cathode;
- a light-emitting layer that is disposed between the anode and the cathode and, when electric current flows between the anode and the cathode, emits light;
- and
- an electron transport layer, which is a layer having the capability of transporting electrons, provided between the cathode and the light-emitting layer so as to be in contact with the light-emitting layer,
- wherein the light-emitting layer contains a compound represented by formula (1) as a light-emitting material, and
- the electron transport layer contains a compound having an azaindolizine skeleton and an anthracene skeleton in the molecule as an electron transport material;
- where each A independently represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryl amino group, or a substituted or unsubstituted triarylamine.
5 more elements
A light-emitting element comprising:
- an anode;
- a cathode;
- a light-emitting layer that is disposed between the anode and the cathode and, when electric current flows between the anode and the cathode, emits light;
- and
- an electron transport layer, which is a layer having the capability of transporting electrons, provided between the cathode and the light-emitting layer so as to be in contact with the light-emitting layer,
- wherein the electron transport layer contains a compound having an azaindolizine skeleton and an anthracene skeleton in the molecule as an electron transport material, and
- the light-emitting layer contains a compound represented by formula (1) as a light-emitting material and a compound represented by formula IRH-4 as a host material for the light-emitting material;
- where each A independently represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryl amino group, or a substituted or unsubstituted triarylamine;
- where n represents a natural number of 1 to 12 and each R is independently a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aryl amino group.
6 more elements
Dependencies are inferred from the claim text.