# US 10,483,495 B2 · Organic light emitting diode and method of manufacturing the same

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- Number: US 10,483,495 B2
- Document ID: US10483495B2
- Status: Granted
- Kind: B2
- Application number: 16/030,287
- Filed: 2018-07-09
- Published: 2019-01-17
- Granted: 2019-11-19
- Earliest claimed: 2017-07-11
- Assignees: LG Display Co., Ltd.
- Applicants: LG Display Co., Ltd.
- Inventors: Taejoon Song; Jongmin Kim
- Web page: https://patentgrep.com/patent/US10483495B2

## CPC

- H10K 59/173: comprising banks or shadow masks
- H10K 59/1795: {comprising structures specially adapted for lowering the resistance}
- H10K 59/8051: {Anodes}
- H10K 59/84: Parallel electrical configurations of multiple OLEDs
- H10K 59/877: {comprising scattering means}
- H10K 59/80516: {combined with auxiliary electrodes, e.g. ITO layer combined with metal lines}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A lighting device is provided. The lighting device may include an organic light emitting diode arranged on one surface of a first substrate, the organic light emitting diode including a first electrode, an organic light emitting layer and a second electrode, and the first electrode is made of a transparent conductive material having a resistance value of 2,800-5,500Ω in each pixel, and has light scattering particles dispersed therein. Thus, even when a resistor of the organic light emitting layer is removed from a pixel due to a contact between the first electrode and the second electrode, it is possible to prevent an over current from being applied to the corresponding pixel through a resistor of the first electrode.

## Claims

### Claim 1

A lighting device, comprising:
a first substrate; and
an organic light emitting diode on a first surface of the first substrate, the organic light emitting diode including a first electrode, an organic light emitting layer, and a second electrode, the organic light emitting diode being divided into a plurality of pixels, each of the pixels having a respective light emitting region,
wherein the first electrode is made of a transparent conductive material having a resistance value within a range of 2,800Ω to 5,500Ω in each pixel, and has light scattering particles dispersed therein.

### Claim 2 (depends on 1)

The light device of claim 1, further comprising
an auxiliary electrode arranged on the first substrate and connected to the first electrode.

### Claim 3 (depends on 2)

The light apparatus of claim 2, wherein
the auxiliary electrode is arranged in a matrix shape, a mesh shape, an octagonal shape, a hexagonal shape, or a circular shape with a predetermined width.

### Claim 4 (depends on 1)

The light apparatus of claim 1, wherein
the first electrode includes at least one material selected from a group consisting of a conductive polymer, a carbon based material, and a nanowire based material.

### Claim 5 (depends on 1)

The light device of claim 1, wherein
the light scattering particles include at least one material selected from a group consisting of TiO2, BaTiO3, ZrO2, ZnO, SiO2 and SiO.

### Claim 6 (depends on 1)

The lighting device of claim 1, wherein
the light scattering particles reduce a refractive index between the first electrode and the first substrate.

### Claim 7 (depends on 1)

The lighting device of claim 1, further comprising:
a light extracting layer arranged on a second surface of the first substrate that is opposite to the first surface.

### Claim 8 (depends on 7)

The lighting device of claim 7, wherein
the light extracting layer includes a plurality of layers having a refractive index that gradually decreases from the second surface of the substrate toward an outer air layer.

### Claim 9 (depends on 7)

The lighting apparatus of claim 7, wherein
the light extracting layer includes light scattering particles.

### Claim 10 (depends on 1)

The lighting device of claim 1, wherein
the first substrate is made of a ductile film or glass.

### Claim 11 (depends on 1)

The lighting device of claim 1, further comprising
a second substrate attached to the first substrate by an adhesive.

### Claim 12 (depends on 11)

The lighting device of claim 11, wherein
the second substrate is made of any one of a polymer film, a metal foil and glass.