Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-9632487-B2
Application number	US-201615222684-A
Country	US
Kind code	B2
Filing date	Jul 28, 2016
Priority date	Jul 29, 2015
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

Discussed is an organic light emitting display device including a substrate having a display area in which a plurality of plurality pixels are disposed, a non-display area outside of the display area, and at least one open hole area defined between the plurality of pixels, and a stacked layer structure disposed on the substrate and defining the plurality of pixels in the display area, the stacked layer structure including at least one organic layer, wherein the at least one open hole area includes at least one open hole penetrating through the substrate and at least one partition disposed along a circumference of the at least one open hole between the at least one open hole and the plurality of pixels adjacent thereto to separate the at least one organic layer from a corresponding layer that extends to the at least one open hole.

First claim

What is claimed is:

1. An organic light emitting display device comprising:
a substrate having a display area in which a plurality of pixels are disposed, a non-display area outside of the display area, and at least one open hole area defined between the plurality of pixels; and
a stacked layer structure disposed on the substrate and defining the plurality of pixels in the display area, the stacked layer structure including at least one organic layer,
wherein the at least one open hole area comprises:
at least one open hole penetrating through the substrate; and
at least one partition disposed along a circumference of the at least one open hole between the at least one open hole and the plurality of pixel adjacent thereto to separate the at least one organic layer from a corresponding layer that extends to the at least one open hole.

2. The organic light emitting display device of claim 1 , wherein the at least one partition includes a first partition and a second partition spaced apart from the first partition at a predetermined interval.

3. The organic light emitting display device of claim 1 , wherein a lateral shape of the at least one partition is an inversely tapered shape.

4. The organic light emitting display device of claim 1 , further comprising:
a gate line and a data line disposed on the substrate and demarcating the plurality of pixels,
wherein the gate line and the data line are disposed to bypass the at least one open hole.

5. The organic light emitting display device of claim 1 , further comprising:
a watchhand provided on a front side of the organic light emitting display device; and
a watch driving unit provided on a rear side of the organic light emitting display device,
wherein the watchhand and the watch driving unit are connected through the at least one open hole.

6. The organic light emitting display device of claim 5 , further comprising:
a pixel driving unit driving the plurality of pixels,
wherein the watch driving unit and the pixel driving unit operate separately.

7. The organic light emitting display device of claim 6 , wherein
the watch driving unit is constantly driven, and
the pixel driving unit is driven when a preset event occurs.

8. The organic light emitting display device of claim 1 , wherein a planar shape of the at least one partition includes a circular shape or a polygonal shape.

9. The organic light emitting display device of claim 1 , wherein a planar shape of the at least one open hole includes a circular shape or a polygonal shape.

10. The organic light emitting display device of claim 1 , wherein the at least one partition is formed on the substrate to have a step higher than a height of the at least one organic layer in order to separate the at least one organic layer from a corresponding layer that extends to the at least one open hole.

11. The organic light emitting display device of claim 1 , wherein the at least one organic layer is formed on a tapered surface of the at least one partition.

12. The organic light emitting display device of claim 1 , wherein the at least one open hole area includes a bank formed on the substrate, wherein the at least one partition is formed on the bank.

13. An organic light emitting display device comprising:
a substrate having a display area in which a plurality of pixels are disposed, a non-display area outside of the display area, and at least one open hole area defined between the plurality of pixels; and
a stacked layer structure disposed on the substrate and defining the plurality of pixels in the display area, the stacked layer structure including at least one organic layer,
wherein the at least one open hole area comprises:
at least one open hole penetrating through the substrate; and
a blocking pattern disposed along a circumference of the at least one open hole to block an introduction path of moisture and oxygen and a propagation path of cracks from spreading to the plurality of pixels adjacent to the at least one open hole by way of the at least one organic layer which extends to the at least one open hole, and
wherein the blocking pattern separates the at least one organic layer from a corresponding layer that extends to the at least one open hole.

14. The organic light emitting display device of claim 13 , wherein the at least one organic layer is separated from a corresponding layer that extends to the at least one open hole by the blocking pattern being formed on the substrate to have a step higher than a height of the at least one organic layer.

15. The organic light emitting display device of claim 13 , wherein the blocking pattern separates the introduction path and separates the propagation path.

16. The organic light emitting display device of claim 15 , further comprising:
a process line provided on an upper portion of the blocking pattern,
wherein the process line is a cut line formed to block the introduction path and the propagation path.

17. The organic light emitting display device of claim 13 , wherein the blocking pattern lengthens the introduction path and the propagation path.

18. The organic light emitting display device of claim 13 , wherein each of the plurality of pixels includes an organic light emitting diode and a thin film transistor,
wherein the organic light emitting diode includes an anode electrode, a cathode electrode, and an organic emission layer interposed between the two electrodes, and
wherein the organic emission layer is separated from a corresponding layer that extends to the at least one open hole by the blocking pattern.

19. The organic light emitting display device of claim 18 , further comprising a passivation layer formed to cover the thin film transistor,
wherein the passivation layer has a stacked structure including one or more inorganic films and an organic film, and
wherein edges of the organic film are covered by an inorganic film of the one or more inorganic films.

20. The organic light emitting display device of claim 13 ,
wherein an organic light emitting diode and a thin film transistor are disposed in each of the plurality of pixels,
wherein the organic light emitting diode includes an anode electrode, a cathode electrode, and an organic emission layer interposed between the two electrodes, and
wherein the cathode electrode is separated from a corresponding layer that extends to the at least one open hole by the blocking pattern.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Miso
• Ahn Taejoon
• Song Sangmoo
• Kang Heekwang
• Lee Hoyoung

Classifications

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/10

  OLED displays · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K50/846 Primary

  comprising getter material or desiccants · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title