Light emitting display device and method for fabricating the same

• US 8,569,950 B2
• Filed: 06/16/2008
• Issued: 10/29/2013
• Est. Priority Date: 09/05/2007
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Joo, Young-Cheol, Lee, Kwan-Hee, Song, Seung-Yong, Son, Jong-Hoon, Choi, Young-Seo
• Primary Examiner(s): RALEIGH, DONALD L
• Application Number:
  US12/214,010
• Publication Number:
  US 20090058294A1
• Time in Patent Office: 1,961 Days
• Field of Search: 257/40, 257/72, 257 98-100, 257642-643, 257/759, 313498-512, 315/169.1, 315/169.3, 427/58, 427/64, 427/66, 427532-535, 427/539, 428690-691, 428/917, 438 26- 29, 438/34, 438/82, 445 24- 25
• US Class Current: 313/512
• CPC Class Codes: H05B 33/04 Sealing arrangements , e.g. against humidity
• CPC Class Codes: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 50/8428 Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/8723 Vertical spacers, e.g. arranged between the sealing arrangement and the OLED

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

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.

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

3. 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.

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

m.