# US 9,520,454 B2 · Organic light-emitting display apparatus

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- Number: US 9,520,454 B2
- Document ID: US9520454B2
- Status: Granted
- Kind: B2
- Application number: 14/921,293
- Filed: 2015-10-23
- Published: 2016-02-11
- Granted: 2016-12-13
- Earliest claimed: 2014-01-06
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Won-Kyu Kwak; Han-Sung Bae; Sun-Youl Lee
- Web page: https://patentgrep.com/patent/US9520454B2

## CPC

- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/1213: {the pixel elements being TFTs}
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K 59/127: comprising two substrates, e.g. display comprising OLED array and TFT driving circuitry on different substrates
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants}
- H10K 59/873: {Encapsulations}
- H10K 59/87: {Passivation; Containers; Encapsulations}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

An organic light-emitting display apparatus includes: a first substrate; an insulating layer on the first substrate; a signal wiring on the insulating layer; an organic light-emitting device on the first substrate, the organic light-emitting device defining an active area and including a first electrode, a second electrode, and an intermediate layer between the first and second electrodes; a passivation layer on the insulating layer; and a metal layer on the passivation layer at an outer region adjacent to the active area, separated from the first electrode, and contacting the second electrode and the signal wiring, wherein a first opening is in the passivation layer at the outer region, and the metal layer contacts the insulating layer at the first opening.

## Claims

### Claim 1

An organic light-emitting display apparatus comprising:
a first substrate;
an insulating layer on the first substrate;
a signal wiring on the insulating layer;
an organic light-emitting device on the first substrate, the organic light-emitting device defining an active area and comprising a first electrode, a second electrode, and an intermediate layer between the first and second electrodes;
a passivation layer on the insulating layer;
a circuit unit below the passivation layer and comprising a plurality of thin-film transistors; and
a metal layer on the passivation layer at an outer region adjacent to the active area and contacting the second electrode and the signal wiring,
wherein a first opening is in the passivation layer at the outer region, and the metal layer contacts the insulating layer at the first opening,
wherein the metal layer and the first electrode comprise the same material,
wherein the metal layer has a second opening above the passivation layer and outside the second electrode,
wherein the first opening is formed toward the active area from the circuit unit and the second opening is formed toward the outer region from the circuit unit, and
wherein a bottom surface of the signal wiring, a bottom of the first opening, and a top surface of the insulating layer are at a same level from a top surface of the first substrate.

### Claim 2 (depends on 1)

The organic light-emitting display apparatus of claim 1, wherein the metal layer is separated from the first electrode.

### Claim 3 (depends on 1)

The organic light-emitting display apparatus of claim 1, further comprising a pixel defining film covering a part of the first electrode and a part of the metal layer and contacting the passivation layer.

### Claim 4 (depends on 1)

The organic light-emitting display apparatus of claim 1, wherein the first opening extends across the passivation layer, and
wherein the passivation layer comprises two portions separated at the first opening.

### Claim 5 (depends on 1)

The organic light-emitting display apparatus of claim 1, wherein the metal layer has a plurality of the second openings.

### Claim 6 (depends on 5)

The organic light-emitting display apparatus of claim 5, wherein the plurality of the second openings are arranged along a line parallel to an end of the second electrode.

### Claim 7 (depends on 1)

The organic light-emitting display apparatus of claim 1, wherein the first opening is configured to prevent impurities in the passivation layer at the outer region from migrating to the active area.

### Claim 8 (depends on 1)

The organic light-emitting display apparatus of claim 1, further comprising:
a second substrate over the second electrode; and
a sealant between the first and second substrates and coupling the first and second substrates to each other.

### Claim 9 (depends on 1)

The organic light-emitting display apparatus of claim 1, wherein the metal layer electrically connects the second electrode and the signal wiring to each other.