# US 2014/0191219 A1 · Organic light emitting diode display and manufacturing method thereof

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- Number: US 2014/0191219 A1
- Document ID: US20140191219A1
- Status: Published application
- Kind: A1
- Application number: 14/149,794
- Filed: 2014-01-07
- Published: 2014-07-10
- Earliest claimed: 2013-01-09
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Jun-Young Kim
- Web page: https://patentgrep.com/patent/US20140191219A1

## CPC

- H10K 59/30: Devices specially adapted for multicolour light emission
- H10K 59/173: comprising banks or shadow masks
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

An organic light emitting diode (OLED) display includes: pixel electrodes formed on a substrate; a pixel definition layer between the pixel electrodes and partitioning a pixel area; organic emission layers of a plurality of colors on the pixel electrodes; and a common electrode on the organic emission layers. The pixel definition layer includes a first pattern and a second pattern having different formation materials, thicknesses, and extension directions.

## Claims

### Claim 1

An organic light emitting diode display comprising:
a plurality of pixel electrodes on a substrate;
a pixel definition layer between the pixel electrodes and partitioning a pixel area;
a plurality of organic emission layers of a plurality of colors on the pixel electrodes; and
a common electrode on the organic emission layers,
wherein adjacent ones of the organic emission layers in a first direction have different colors,
wherein adjacent ones of the organic emission layers in a second direction have a same color, and
wherein the pixel definition layer comprises a first pattern in the first direction, and a second pattern in the second direction that is thicker than the first pattern.

### Claim 2 (depends on 1)

The organic light emitting diode display of claim 1,
wherein the first pattern comprises an inorganic layer, and
wherein the second pattern comprises an organic layer.

### Claim 3 (depends on 2)

The organic light emitting diode display of claim 2,
wherein the first pattern comprises one of silicon oxide or silicon nitride, and wherein the second pattern comprises a polyimide.

### Claim 4 (depends on 2)

The organic light emitting diode display of claim 2,
wherein the first pattern is from about 1000 Å to about 3000 Å thick, and
wherein the second pattern is from about 3000 Å to about 5000 Å thick.

### Claim 5 (depends on 2)

The organic light emitting diode display of claim 2,
wherein one of the first pattern or the second pattern is formed before the other one of the first pattern or the second pattern, and
wherein the first pattern and the second pattern overlap at a crossing portion thereof.

### Claim 6 (depends on 1)

The organic light emitting diode display of claim 1, wherein an organic emission layer of one color from among the organic emission layers of the plurality of colors is formed by laser induced thermal imaging.

### Claim 7 (depends on 6)

The organic light emitting diode display of claim 6, wherein the organic emission layer of one color covers the first pattern and extends in the second direction.

### Claim 8

An organic light emitting diode display comprising:
a plurality of pixel electrodes on a substrate;
a pixel definition layer between the pixel electrodes and partitioning a pixel area;
a plurality of organic emission layers of a plurality of colors on the pixel electrodes; and
a common electrode on the organic emission layers,
wherein the pixel definition layer comprises a first pattern and a second pattern, the first pattern and the second pattern comprising different formation materials, having different thicknesses, and extending in different directions from each other.

### Claim 9 (depends on 8)

The organic light emitting diode display of claim 8,
wherein adjacent ones of the organic emission layers in a first direction have different colors, and
wherein adjacent ones of the organic emission layers in a second direction have a same color.

### Claim 10 (depends on 9)

The organic light emitting diode display of claim 9,
wherein the first pattern comprises an inorganic layer and extends in the first direction, and
wherein the second pattern comprises an organic layer, is thicker than the first pattern, and extends in the second direction.

### Claim 11 (depends on 10)

The organic light emitting diode display of claim 10,
wherein an organic emission layer of one color from among the organic emission layers of the plurality of colors is formed by laser induced thermal imaging, and
wherein the organic emission layer of the one color covers the first pattern and is arranged in the second direction.

### Claim 12

A method for manufacturing an organic light emitting diode display comprising:
forming a plurality of pixel electrodes on a substrate;
forming a pixel definition layer between the pixel electrodes, the pixel definition layer comprising a first pattern and a second pattern, the first pattern and the second pattern comprising different formation materials, having different thicknesses, and extending in different directions from each other;
disposing a base film and a donor film comprising a light-to-heat conversion layer and a transfer layer at a top of the substrate on which the pixel definition layer is formed;
irradiating the donor film with a laser to transfer the transfer layer onto the pixel electrodes and to form an organic emission layer; and
forming a common electrode on the organic emission layer.

### Claim 13 (depends on 12)

The method of claim 12,
wherein the first pattern is formed in a direction crossing an irradiation direction, and
wherein the second pattern is formed thicker than the first pattern and is formed in parallel with the irradiation direction.

### Claim 14 (depends on 13)

The method of claim 13,
wherein the first pattern is formed with an inorganic material, and
wherein the second pattern is formed with an organic material.

### Claim 15 (depends on 13)

The method of claim 13, wherein the organic emission layer is formed to cover the first pattern and is formed in parallel with the irradiation direction.