# US 9,437,660 B2 · Organic light-emitting diode display panel

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- Number: US 9,437,660 B2
- Document ID: US9437660B2
- Status: Granted
- Kind: B2
- Application number: 14/697,103
- Filed: 2015-04-27
- Published: 2015-08-13
- Granted: 2016-09-06
- Earliest claimed: 2012-11-19
- Assignees: LG Display Co., Ltd.
- Applicants: LG Display Co., Ltd.
- Inventors: ChungWan Oh
- Web page: https://patentgrep.com/patent/US9437660B2

## 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 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/873: {Encapsulations}
- H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K 77/111: {Flexible substrates}
- H10K 2102/311: {Flexible OLED}
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Disclosed is an organic light-emitting diode (OLED) display panel. An OLED display panel includes a plurality of signal lines and a thin film transistor formed on a substrate, an interlayer insulating layer, a first electrode, a bank, an organic light-emitting layer, a second electrode, a first passivation layer, an organic layer, a second passivation layer and a barrier film, wherein the bank is formed to completely cover the interlayer insulating layer, and an inclination formed by side surfaces of the bank and the interlayer insulating layer is made to be gradual.

## Claims

### Claim 1

An organic light-emitting diode display panel, comprising:
a substrate divided into an active area which defines a plurality of pixels, and a non-active area formed to enclose the active area;
a plurality of signal lines and thin film transistors formed on the substrate;
an interlayer insulating layer formed on the substrate including the thin film transistors, configured to expose one electrode of the thin film transistors to outside, and extending up to the non-active area;
a first electrode formed on the interlayer insulating layer, and connected to said one electrode;
a bank formed on the substrate including the first electrode such that a side surface of the interlayer insulating layer is exposed to outside;
an organic light-emitting layer formed on the first electrode in each pixel;
a second electrode on the organic light-emitting layer in an entire part of the active area;
a first passivation layer formed on an entire surface of the substrate including the second electrode;
an organic layer formed on the first passivation layer;
a second passivation layer formed on the first passivation layer including the organic layer;
a barrier film disposed in correspondence to the substrate; and
an adhesive layer interposed between the substrate and the barrier film, and configured to adhere the substrate and the barrier film to each other.

### Claim 2 (depends on 1)

The device of claim 1, wherein the interlayer insulating layer and the bank are formed such that side surfaces thereof form a stair shape.

### Claim 3 (depends on 1)

The device of claim 1, wherein the first passivation layer is formed to completely cover the interlayer insulating layer and the bank.

### Claim 4 (depends on 1)

The device of claim 1, wherein the substrate is formed of a plastic material having a flexible characteristic.