Organic light emitting diode display and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9741962-B2
Application number	US-201514969321-A
Country	US
Kind code	B2
Filing date	Dec 15, 2015
Priority date	May 22, 2015
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

An organic light emitting diode display includes: a substrate including a display area displaying an image and a peripheral area enclosing the display area; a plurality of signal lines formed in the display area; a plurality of pixels connected to the plurality of signal lines; a plurality of fan-out lines formed in the peripheral area and connected to the plurality of pixels; a first interlayer insulating layer covering the plurality of fan-out lines; a second interlayer insulating layer covering the first interlayer insulating layer and including a first sealant opening exposing a portion of the first interlayer insulating layer; and an etching preventing member positioned in the first sealant opening and overlapping the plurality of fan-out lines in plan view.

First claim

What is claimed is:

1. An organic light emitting diode display, comprising:
a substrate including a display area displaying an image and a peripheral area enclosing the display area;
a plurality of signal lines formed in the display area;
a plurality of pixels connected to the plurality of signal lines;
a plurality of fan-out lines formed in the peripheral area and connected to the plurality of pixels;
a first interlayer insulating layer covering the plurality of fan-out lines;
a second interlayer insulating layer covering the first interlayer insulating layer and including a first sealant opening exposing a portion of the first interlayer insulating layer; and
an etching preventing member positioned in the first sealant opening and overlapping the plurality of fan-out lines in plan view.

2. The organic light emitting diode display of claim 1 , further comprising:
a passivation layer formed on the second interlayer insulating layer and including a second sealant opening having the same pattern as the first sealant opening; and
a sealant in the peripheral area and crossing the plurality of fan-out lines,
wherein the sealant fills the first sealant opening and the second sealant opening.

3. The organic light emitting diode display of claim 2 , wherein
each of the plurality of signal lines includes a scan line formed on the substrate and transmitting a scan signal, and a data line and a driving voltage line crossing the scan line and respectively transmitting a data voltage and a driving voltage, and
each of the plurality of pixels includes:
a switching transistor connected to the scan line and the data line,
a driving transistor connected to the switching transistor and including a driving gate electrode, a second storage electrode overlapping a first storage electrode of the driving gate electrode and extended from the driving voltage line, and
an organic light emitting diode electrically connected to the driving transistor.

4. The organic light emitting diode display of claim 3 , wherein
each of the plurality of fan-out lines is formed on the same layer as the scan line, and
the etching preventing member is formed on the same layer as the data line.

5. The organic light emitting diode display of claim 3 , wherein
the first interlayer insulating layer covers the scan line, and
the data line is formed on the second interlayer insulating layer.

6. The organic light emitting diode display of claim 3 , wherein
the sealant is positioned on the etching preventing member.

7. The organic light emitting diode display of claim 3 , wherein
the driving voltage line includes a first driving voltage line parallel to the data line and a second driving voltage line parallel to the data line,
wherein the first driving voltage line is formed on the same layer as the data line, and the second driving voltage line is formed on the same layer as the scan line.

8. The organic light emitting diode display of claim 7 , wherein
the second storage electrode is formed on the first interlayer insulating layer, and the first driving voltage line and the data line are formed on the second interlayer insulating layer.

9. The organic light emitting diode display of claim 2 , wherein
the first interlayer insulating layer includes an inorganic material, and the second interlayer insulating layer and the passivation layer include an organic material.

10. The organic light emitting diode display of claim 2 , wherein
the etching preventing member overlaps each of the plurality of fan-out lines.

11. The organic light emitting diode display of claim 2 , wherein
the etching preventing member overlaps the plurality of fan-out lines together.

12. The organic light emitting diode display of claim 1 , further comprising
a semiconductor formed on the substrate and including a switching channel of the switching transistor and a driving channel of the driving transistor separated from each other,
wherein the driving channel overlaps the driving gate electrode and the driving channel is curved in plan view.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Sung Eun
• Cho Seung-Hwan
• Shim Dong Hwan
• Yoon Joo Sun
• Lee Jung Kyu

Classifications

• H01L51/5246 Primary

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic

• H10K50/8426 Primary

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/124

  Insulating layers formed between TFT elements and OLED elements · CPC title