# US 8,569,950 B2 · Light emitting display device and method for fabricating the same

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- Number: US 8,569,950 B2
- Document ID: US8569950B2
- Status: Granted
- Kind: B2
- Application number: 12/214,010
- Filed: 2008-06-16
- Published: 2009-03-05
- Granted: 2013-10-29
- Earliest claimed: 2007-09-05
- Assignees: Samsung Display Co., Ltd.
- Applicants: Young-Cheol Joo; Kwan-Hee Lee; Seung-Yong Song; Jong-Hoon Son; Young-Seo Choi
- Inventors: Young-Cheol Joo; Kwan-Hee Lee; Seung-Yong Song; Jong-Hoon Son; Young-Seo Choi
- Web page: https://patentgrep.com/patent/US8569950B2

## CPC

- H05B 33/10: Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
- H05B 33/04: Sealing arrangements {, e.g. against humidity}
- H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants}
- H10K 59/8723: {Vertical spacers, e.g. arranged between the sealing arrangement and the OLED}
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Disclosed are a light emitting display device and a method for fabricating the same. The light emitting display device according to the present embodiments includes a first substrate including a pixel region and a non-pixel region surrounding the pixel region; a plurality of light emitting diodes disposed in the pixel region of the first substrate, and each including a first electrode, a light emitting layer, and a second electrode; and a second substrate disposed to face the first substrate. Also, the light emitting display device according to the present embodiments includes a sealant by coupling the first substrate to the second substrate to encapsulate the pixel region; and a spacer disposed between the first substrate and the second substrate and provided in a non-light emission region arranged between the adjacent light emitting diodes. In this case, the spacer is disposed on the second electrode of the non-light emission region to be in contact with the second substrate.

## Claims

### Claim 1

A light emitting display device, comprising:
a first substrate including a pixel region and a non-pixel region surrounding the pixel region;
a thin film transistor disposed on the first substrate;
an overcoat layer disposed on the thin film transistor;
a plurality of light emitting diodes disposed on the pixel region of the first substrate and including a first electrode, a light emitting layer, and a second electrode which are electrically coupled to the thin film transistor through viaholes formed on the overcoat layer;
a second substrate disposed to face the first substrate;
a sealant coupling the first substrate to the second substrate configured to encapsulate the pixel region; and
a non-metallic spacer disposed between the first substrate and the second substrate provided in a non-light emission region arranged between adjacent light emitting diodes,
wherein the spacer is disposed on and contacts the overcoat layer of the non-light emission region, and is distinct from and contacted on at least three sides by a pixel definition layer, and the second electrode is formed on and contacts the pixel definition layer, and the second electrode is in contact with the second substrate.

### Claim 2 (depends on 1)

The light emitting display device according to claim 1, wherein the second substrate has the form of a flat plate.

### Claim 3 (depends on 1)

The light emitting display device according to claim 1, wherein the second substrate is concavely formed toward a space formed by coupling the first substrate to the second substrate.

### Claim 4 (depends on 1)

The light emitting display device according to claim 1, wherein the sealant is from about 5 to about 8 μm.