Organic electroluminescent display device and method and apparatus of manufacturing the same

Patent metadata

Field	Value
Publication number	US-8928222-B2
Application number	US-50020109-A
Country	US
Kind code	B2
Filing date	Jul 9, 2009
Priority date	Nov 21, 2008
Publication date	Jan 6, 2015
Grant date	Jan 6, 2015

Abstract

A an organic electroluminescent display device includes an array substrate including a driving thin film transistor in a pixel region on a first substrate; an opposing substrate including an organic electroluminescent diode in the pixel region on a second substrate; an adhesive layer filling a space between the array substrate and the opposing substrate; and a connection spacer to electrically connect the organic electroluminescent diode with the driving thin film transistor.

First claim

What is claimed is:

1. An organic electroluminescent display device, comprising:
an array substrate including a driving thin film transistor in a pixel region on a first substrate;
an opposing substrate including an organic electroluminescent diode in the pixel region on a second substrate;
a separator corresponding to a boundary of the pixel region on the opposing substrate;
an adhesive layer filling a space between the array substrate and the opposing substrate, the adhesive layer including conductive particles;
a connection spacer configured to electrically connect the organic electroluminescent diode with the driving thin film transistor such that the adhesive layer disposes between the driving thin film transistor and the organic organic electroluminescent diode;
at least one first shield pattern on one of an inner surface of the array substrate and an inner surface of the opposing substrate, the at least one first shield pattern surrounding the display region of the device; and
at least one second shield pattern on the other of the inner surface of the array substrate and the inner surface of the opposing substrate, the at least one second shield pattern surrounding the display region of the device and alternating with the first shield pattern,
wherein the first pattern and the second pattern occlude,
wherein each of the first shield pattern and the second shield pattern has a first width equal to each other,
wherein a distance between a neighboring two of the first shield patterns or a neighboring two of the second shield patterns has a second width equal to each other,
wherein the second width is bigger than the first width, and
wherein the second shield pattern comprises a same material as the connection spacer.

2. The device according to claim 1 , wherein:
the adhesive layer includes an inorganic compound material, and an organic compound material or an organic/inorganic compound material; and
the inorganic compound material has conductivity.

3. The device according to claim 2 , wherein the inorganic compound material includes at least one of carbon black, carbon nanotube, semiconductor nanocrystal, and metal nanocrystal.

4. The device according to claim 2 , wherein the organic compound material includes at least one of a pentacene group material and a PPV (poly<p-phenylene vinylene>) group material.

5. The device according to claim 2 , wherein a weight % of the organic compound material or the organic inorganic compound material to the inorganic compound material is equal to or more than 1 weight %.

6. The device according to claim 1 , wherein the adhesive layer has a specific resistance equal to or less than 6*10 6 Ω cm.

7. The device according to claim 1 , wherein the adhesive layer has a thermal conductivity equal to or more than 0.19 W/mK.

8. The device according to claim 1 , wherein the adhesive layer has a water vapor transmission rate (WVTR) equal to or less than 1000 g/m 2 day.

9. The device according to claim 1 , wherein the adhesive layer has a thickness equal to or more than 10 nm.

10. The device according to claim 1 , further comprising:
a seal pattern surrounding a display region of the device,
wherein both ends of the seal pattern contact an inner surface of the array substrate and an inner surface of the opposing substrate, respectively.

11. The device according to claim 10 , wherein:
the inner surface of the array substrate and the inner surface of the opposing substrate have first and second grooves, respectively; and
the seal pattern fills the first and second grooves.

12. The device according to claim 1 , further comprising a seal pattern covering sides of the device, an outer surface of the array substrate, and an outer surface of the opposing substrate.

13. The device according to claim 1 , further comprising a metal layer covering the at least one first shield pattern.

14. The device according to claim 13 , further comprising a metal layer covering the at least one second shield pattern.

15. The device according to claim 1 , wherein:
the array substrate further includes a switching thin film transistor and a connection electrode in the pixel region; and
the connection electrode electrically connects the driving thin film transistor with the organic electroluminescent diode.

16. The device according to claim 15 , wherein:
the organic electroluminescent diode includes a first electrode on an inner surface of the opposing substrate, an organic emitting layer on the first electrode, and a second electrode on the organic emitting layer;
the connection spacer includes a patterned spacer and a portion of the second electrode on the patterned spacer; and
the portion of the second electrode contacts the connection electrode.

17. The device according to claim 1 , wherein:
the organic electroluminescent diode includes a first electrode on an inner surface of the opposing substrate, an organic emitting layer on the first electrode, and a second electrode on the organic emitting layer; and
the connection spacer connect the second electrode and a drain electrode of the driving thin film transistor.

Assignees

• Kim Myung-Seop
• Seo Jeong-Dae
• Lee Jong-Moo
• Choi Hyun-Ju
• Han Chang-Wook
• Tak Yoon-Heung
• Lg Display Co Ltd

Inventors

• Kim Myung-Seop
• Seo Jeong-Dae
• Lee Jong-Moo
• Choi Hyun-Ju
• Han Chang-Wook
• Tak Yoon-Heung

Classifications

• H10K50/841

  Self-supporting sealing arrangements · CPC title

• H10K50/844

  Encapsulations · CPC title

• H10K59/871

  Self-supporting sealing arrangements · CPC title

• H10K59/127

  comprising two substrates, e.g. display comprising OLED array and TFT driving circuitry on different substrates · CPC title

• B30B5/02 Primary

  wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid pressure · CPC title