# US 2019/0319166 A1 · Light emitting composite and light emitting structure and optical sheet and electronic device

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- Number: US 2019/0319166 A1
- Document ID: US20190319166A1
- Status: Published application
- Kind: A1
- Application number: 16/108,296
- Filed: 2018-08-22
- Published: 2019-10-17
- Earliest claimed: 2018-04-12
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Eun Kyung Lee; Jiyoung Jung; Jeong II Park
- Web page: https://patentgrep.com/patent/US20190319166A1

## CPC

- C09K 11/025: {non-luminescent particle coatings or suspension media}
- H10H 20/812: within the light-emitting regions, e.g. having quantum confinement structures
- H10H 20/83: Electrodes
- H10H 20/8512: {Wavelength conversion materials}
- H10H 20/855: Optical field-shaping means, e.g. lenses
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES

## Abstract

A light emitting composite includes a light emitting element and a three dimensional protection structure bound to the light emitting element and surrounding the light emitting element. The three dimensional protection structure includes a SiO3/2 moiety and a polymerizable functional group. A light emitting structure, an optical sheet, and an electronic device are also disclosed.

## Claims

### Claim 1

A light emitting composite, comprising
a light emitting element, and
a three dimensional protection structure bound to the light emitting element, and surrounding the light emitting element,
wherein the three dimensional protection structure comprises a SiO3/2 moiety and a polymerizable functional group.

### Claim 2 (depends on 1)

The light emitting composite of claim 1, wherein
the light emitting element and the three dimensional protection structure are bound to each other by —C(═O)NRa— (wherein Ra is hydrogen or a substituted or unsubstituted C1 to C10 hydrocarbon group).

### Claim 3 (depends on 1)

The light emitting composite of claim 1, wherein the light emitting element and the three dimensional protection structure form a core-shell structure.

### Claim 4 (depends on 1)

The light emitting composite of claim 1, wherein the three dimensional protection structure includes one of —C(═O)—, —C(═O)O—, —OC(═O)—, —N(Rb)—C(═O)—, —N(Rb)—C(═O)O—, —N(Rb)OC(═O)— (wherein Rb is hydrogen or a substituted or unsubstituted C1 to C10 hydrocarbon group), or a combination thereof.

### Claim 5 (depends on 1)

The light emitting composite of claim 1, wherein the polymerizable functional group includes one of a (meth)acrylate group, an epoxy group, a styrene group, an acrylonitrile group, an N-vinylpyrrolidone group, a vinyl group, a derivative thereof, or a combination thereof.

### Claim 6 (depends on 1)

The light emitting composite of claim 1, wherein the light emitting composite is a condensation polymerization reaction product of a precursor represented by Chemical Formula 1 and a precursor represented by Chemical Formula 2:
wherein, in Chemical Formula 1,
Q is a light emitting element,
L1 is —C(═O)NRa—, wherein Ra is hydrogen or a substituted or unsubstituted C1 to C10 hydrocarbon group,
L2 is one of a single bond, a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted divalent C3 to C30 heterocyclic group, a substituted or unsubstituted C1 to C20 silylene group, a substituted or unsubstituted siloxane group, or a combination thereof,
R1 to R3 are independently one of a substituted or unsubstituted C1 to C20 alkoxy group, a hydroxy group, a halogen, or a carboxyl group, and
n is an integer of 1 or more,
wherein, in Chemical Formula 2,
L3 and L5 are independently one of a single bond, a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted divalent C3 to C30 heterocyclic group, a substituted or unsubstituted C2 to C20 alkenylene group, a substituted or unsubstituted C2 to C20 alkynylene group, —Rc—O—Rd—, —R—N—Rd—, —Rc—(C═O)—Rd—, or a combination thereof, wherein Rc and Rd are independently a C1 to C10 hydrocarbon group,
L4 is one of —O—, —S—, —(C═O)—, —(C═O)O—, —O(C═O)—, —(C═O)—NRe—, —(C═O)O—NRe—, or —O(C═O)—NRe—, wherein Re is one of hydrogen or a substituted or unsubstituted C1 to C6 hydrocarbon group,
R4 to R6 are independently one of hydrogen, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a hydroxy group, a halogen, a carboxyl group, or a combination thereof, provided that at least one of R4 to R6 is one of a substituted or unsubstituted C1 to C20 alkoxy group, a hydroxy group, a halogen, or a carboxyl group, and
R7 is hydrogen or a methyl group.

### Claim 7 (depends on 1)

The light emitting composite of claim 1, wherein the three dimensional protection structure is represented by Chemical Formula 3:
(R8R9R10SiO1/2)M1(R11R12SiO2/2)D1(R13SiO3/2)T1(SiO4/2)Q1 [Chemical Formula 3]
wherein, in Chemical Formula 3,
R8 to R13 are independently one of hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C7 to C30 arylalkyl group, a substituted or unsubstituted C1 to C30 heteroalkyl group, a substituted or unsubstituted C2 to C30 heterocycloalkyl group, a substituted or unsubstituted C2 to C30 alkenyl group, a substituted or unsubstituted C2 to C30 alkynyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C2 to C30 epoxy group, a substituted or unsubstituted C1 to C30 carbonyl group, a substituted or unsubstituted C1 to C30 carboxyl group, a substituted or unsubstituted amide group, a hydroxyl group, a (meth)acrylate group, a nitrile group, or a combination thereof,
one of R13's comprises a linking point with the light emitting element bound by —C(═O)NRa— (wherein Ra is hydrogen or a substituted or unsubstituted C1 to C10 hydrocarbon group),
at least one of R8 to R13 comprises a polymerizable functional group,
0≤M1<1, 0≤D1<1, 0≤T1<1, 0≤Q1<1, and
M1+D1+T1+Q1=1.

### Claim 8 (depends on 1)

The light emitting composite of claim 1, wherein the light emitting element comprises one of a quantum dot, phosphor, or a combination thereof.

### Claim 9 (depends on 1)

The light emitting composite of claim 1, wherein a particle diameter of the light emitting composite is at least two times larger than that of the light emitting element.

### Claim 10 (depends on 1)

A light emitting structure comprising:
a cured product of the light emitting composite of claim 1.

### Claim 11 (depends on 10)

The light emitting structure of claim 10, further comprising:
a cured product of an organometal compound, or
a cured product of the light emitting composite and an organometal compound.

### Claim 12 (depends on 11)

The light emitting structure of claim 11, wherein the organometal compound comprises one of an aluminum compound, a titanium compound, a zirconium compound, a hafnium compound, a magnesium compound, a tin compound, or a combination thereof.

### Claim 13 (depends on 10)

The light emitting structure of claim 10, wherein the light emitting structure has a weight loss of less than or equal to about 5% at about 300° C.

### Claim 14 (depends on 10)

An optical sheet comprising:
the light emitting structure of claim 10.

### Claim 15 (depends on 10)

An electronic device comprising:
the light emitting structure of claim 10.

### Claim 16 (depends on 15)

The electronic device of claim 15, wherein the electronic device includes a light source, and a display panel on the light source.

### Claim 17 (depends on 16)

The electronic device of claim 16, wherein the light emitting structure is included in the light source.

### Claim 18 (depends on 16)

The electronic device of claim 16, wherein
the display panel includes a color conversion layer that is supplied with first visible light from the light source and emits second visible light in the same wavelength as the first visible light or in a longer wavelength than the first visible light, and
the light emitting structure is included in the color conversion layer.

### Claim 19 (depends on 18)

The electronic device of claim 18, wherein
the first visible light is blue light, and
the second visible light is one of blue light, green light, red light, or a combination thereof.

### Claim 20 (depends on 16)

The electronic device of claim 16, further comprising:
an optical sheet between the light source and the display panel, and
wherein the light emitting structure is included in the optical sheet.

### Claim 21 (depends on 15)

The electronic device of claim 15, wherein
the electronic device includes a first electrode and a second electrode facing each other, and an emission layer between the first electrode and the second electrode, and
the emission layer includes the light emitting structure.