# US 10,872,937 B2 · Organic electroluminescence display device

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- Number: US 10,872,937 B2
- Document ID: US10872937B2
- Status: Granted
- Kind: B2
- Application number: 15/954,331
- Filed: 2018-04-16
- Published: 2019-02-07
- Granted: 2020-12-22
- Earliest claimed: 2017-08-07
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Jaeweon Hur; Sukhoon Kang; Hyein Jeong
- Web page: https://patentgrep.com/patent/US10872937B2

## CPC

- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 85/111: {comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene}
- H10K 85/141: {comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE}
- H10K 85/40: Organosilicon compounds, e.g. TIPS pentacene
- H10K 85/654: {comprising only nitrogen as heteroatom (H10K85/652 takes precedence)}
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Provided is an organic electroluminescence display device including a substrate, a first electrode disposed on the substrate, a pixel defining layer disposed on the first electrode and having an opening defined therein for exposing at least a part of the first electrode, an organic layer disposed on the first electrode exposed by the opening and including a light emitting layer, and a second electrode disposed on the organic layer, wherein the pixel defining layer includes a base resin and a hindered amine light stabilizer (HALS).

## Claims

### Claim 1

An organic electroluminescence display device comprising:
a substrate;
a first electrode disposed on the substrate;
a pixel defining layer disposed on a portion of the first electrode and having an opening defined therein for exposing at least another portion of the first electrode, the opening of the pixel defining layer defining a pixel;
an organic layer disposed on the first electrode exposed by the opening and comprising a light emitting layer, the organic layer being in the pixel defined by the opening of the pixel defining layer;
a second electrode disposed on the organic layer; and
a passivation layer disposed between the substrate and the first electrode;
wherein the pixel defining layer comprises a base resin and a hindered amine light stabilizer (HALS),
wherein the pixel defining layer is a partition wall, and
wherein the pixel defining layer which comprises the hindered amine light stabilizer (HALS) is disposed on the same layer as the organic layer comprising the emission layer.

### Claim 2 (depends on 1)

The organic electroluminescence display device of claim 1, wherein the hindered amine light stabilizer is present in an amount of 0.01 wt % to 5.0 wt % based on the total 100 wt % of the base resin.

### Claim 3 (depends on 1)

The organic electroluminescence display device of claim 1, wherein the hindered amine light stabilizer comprises at least one of a first compound having a structure represented by Formula 1 below in a molecule and a second compound having a structure represented by Formula 2 below in a molecule:
in Formula 2, R1 is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 ring-forming carbon atoms.

### Claim 4 (depends on 3)

The organic electroluminescence display device of claim 3, wherein Formula 1 is represented by Formula 1-1 below:
in Formula 1-1, X1 is a unit comprising any one of the following structural formulas or a combination thereof:
in the structural Formula above, n is an integer from 1 to 10.

### Claim 5 (depends on 3)

The organic electroluminescence display device of claim 3, wherein Formula 2 is represented by Formula 2-1 below:
in Formula 2-1,
R1-1 and R1-2 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 ring-forming carbon atoms, and
X2 is a unit comprising any one of the following structural formulas or a combination thereof:
in the structural formula above, n is an integer from 1 to 10.

### Claim 6 (depends on 3)

The organic electroluminescence display device of claim 3, wherein the hindered amine light stabilizer comprises both the first compound and the second compound.

### Claim 7 (depends on 1)

The organic electroluminescence display device of claim 1, wherein the base resin comprises at least one of a polyimide-based resin, a polyamide-based resin, a polyacrylic resin, or a siloxane-based resin.

### Claim 8 (depends on 1)

The organic electroluminescence display device of claim 1, wherein the base resin comprises a polyamide-based resin represented by Formula 3 below:
in Formula 3,
m is an integer from 1 to 1000,
Y1 and Y2 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 ring-forming carbon atoms, and
S1 and S2 are each independently a unit comprising any one of the following structural formulas or a combination thereof:
in the structural formula above, n is an integer from 1 to 10.

### Claim 9 (depends on 1)

The organic electroluminescence display device of claim 1, wherein the base resin comprises a siloxane-based resin represented by Formula 4 below:
in Formula 4,
q is an integer from 1 to 1000,
Z1 and Z2 are each independently a unit comprising any one of the following structural formulas or a combination thereof:
in the structural formula above, n is an integer from 1 to 10.

### Claim 10 (depends on 1)

The organic electroluminescence display device of claim 1, wherein the pixel defining layer further comprises an ultraviolet ray absorbing agent.