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US 12,641,944 B2Granted
Light-emitting element and light-emitting device
AssigneeSharp Kabushiki Kaisha
InventorYoshihiro Ueta
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Abstract
A light-emitting element includes: a first electrode; a second electrode; and a light-emitting layer between the first electrode and the second electrode, wherein the light-emitting layer includes quantum dots and a cyclic organic compound, and at least some of atoms that form a ring of the cyclic organic compound are coordinated to the quantum dots.
Claims7
A light-emitting element comprising:
- a first electrode;
- a second electrode;
- and
- a light-emitting layer between the first electrode and the second electrode, wherein
- the light-emitting layer includes quantum dots and a cyclic organic compound,
- the cyclic organic compound is configured such that at least some of atoms that form a ring of the cyclic organic compound are coordinated with the quantum dots, or the cyclic organic compound includes cyclic ether,
- the cyclic ether has a general formula (1)
- [Chem. 1]
- (—CH2—CH2-A-)n (1)
- where n is an integer from 2 to 8, both inclusive, and each A may be either identical to another A or different from another A and is any of an O, an NH, and an S, and
- the cyclic organic compound includes π-electrons at a concentration that differs between the at least some of atoms that form the ring of the cyclic organic compound.
8 more elements
A light-emitting element comprising:
- a first electrode;
- a second electrode;
- and
- a light-emitting layer between the first electrode and the second electrode, wherein
- the light-emitting layer includes quantum dots and a cyclic organic compound,
- the cyclic organic compound is configured such that at least some of atoms that form a ring of the cyclic organic compound are coordinated with the quantum dots, or the cyclic organic compound includes cyclic ether,
- the cyclic ether has a general formula (1)
- [Chem. 1]
- (—CH2—CH2-A-) (1)
- where n is an integer from 2 to 8, both inclusive, and each A may be either identical to another A or different from another A and is any of an O, an NH, and an S,
- the cyclic organic compound includes a first cyclic organic compound and a second cyclic organic compound that has a ring that is formed by more atoms than is a ring of the first cyclic organic compound,
- the quantum dots include first quantum dots with which at least some of atoms that form the ring of the first cyclic organic compound are coordinated and second quantum dots with which at least some of atoms that form the ring of the second cyclic organic compound are coordinated, the second quantum dots having a shorter emission wavelength than the first quantum dots, and
- the light-emitting layer includes a first light-emitting layer including the first quantum dots and a second light-emitting layer including the second quantum dots.
10 more elements
A light-emitting device comprising a plurality of light-emitting elements, each of the plurality of light-emitting elements comprising:
- a first electrode;
- a second electrode;
- and
- a light-emitting layer between the first electrode and the second electrode, wherein
- the light-emitting layer includes quantum dots and a cyclic organic compound,
- the cyclic organic compound is configured such that at least some of atoms that form a ring of the cyclic organic compound are coordinated with the quantum dots, or the cyclic organic compound includes cyclic ether,
- the cyclic ether has a general formula (1)
- [Chem. 1]
- (—CH2—CH2-A-)n (1)
- where n is an integer from 2 to 8, both inclusive, and each A may be either identical to another A or different from another A and is any of an O, an NH, and an S,
- the plurality of light-emitting elements includes a first light-emitting element and a second light-emitting element that differs from the first light-emitting element,
- a first light-emitting layer, that is the light-emitting layer in the first light-emitting element, includes first quantum dots as the quantum dots and a first cyclic organic compound as the cyclic organic compound,
- a second light-emitting layer, that is the light-emitting layer in the second light-emitting element, includes second quantum dots as the quantum dots and a second cyclic organic compound as the cyclic organic compound,
- the second quantum dots have a shorter emission wavelength than the first quantum dots, and
- a ring of the second cyclic organic compound is formed by fewer atoms than is a ring of the first cyclic organic compound.
12 more elements
Dependencies are inferred from the claim text.