Organic light-emitting display device including substrate having plurality of trenches and method of fabricating the same

Patent metadata

Field	Value
Publication number	US-10050098-B2
Application number	US-201615299690-A
Country	US
Kind code	B2
Filing date	Oct 21, 2016
Priority date	Dec 29, 2015
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

An organic light-emitting display device and a method of fabricating the same are provided. The organic light-emitting display device includes a substrate having a plurality of trenches; a thin film transistor on the substrate; a light-emitting diode connected to the thin film transistor; an upper auxiliary electrode connected to one of an anode and a cathode of the light-emitting diode; and a lower auxiliary electrode in an auxiliary electrode trench among the plurality of trenches of the substrate and connected to the upper auxiliary electrode.

First claim

What is claimed is:

1. An organic light-emitting display device, comprising:
a substrate having a plurality of trenches;
a thin film transistor on the substrate;
a light-emitting diode connected to the thin film transistor;
an upper auxiliary electrode connected to one of an anode and a cathode of the light-emitting diode;
a lower auxiliary electrode in an auxiliary electrode trench among the plurality of trenches of the substrate and connected to the upper auxiliary electrode; and
a light shielding layer overlapping with the thin film transistor, wherein the light shielding layer is embedded in a light shielding trench among the plurality of trenches of the substrate.

2. The organic light-emitting display device of claim 1 , further comprising a first buffer layer on the substrate.

3. The organic light-emitting display device of claim 2 , further comprising:
a heat-resistant buffer layer; and
a second buffer layer,
wherein the first buffer layer, the heat-resistant buffer layer, and the second buffer layer are sequentially stacked one above another between the light shielding layer and the thin film transistor.

4. The organic light-emitting display device of claim 3 , wherein the heat-resistant buffer layer includes an organic film material having a lower dielectric constant than those of the first and second buffer layers.

5. The organic light-emitting display device of claim 2 , further comprising a lower pad electrode embedded in a lower pad trench of the substrate and an upper pad electrode connected to the lower pad electrode through the first buffer layer.

6. The organic light-emitting display device of claim 5 , further comprising:
a signal link located above the lower auxiliary electrode; and
a signal pad connected to the signal link,
wherein the first buffer layer, the heat-resistant buffer layer, and the second buffer layer are sequentially stacked one above another between the lower auxiliary electrode and the signal link, and
wherein:
the signal pad includes the lower pad electrode and the upper pad electrode;
the upper pad electrode is connected to the lower pad electrode through a pad contact hole, and
the pad contact hole passes through the first buffer layer and an interlayer insulator film.

7. The organic light-emitting display device of claim 1 , further comprising an alignment key embedded in an alignment key trench among the plurality of trenches of the substrate, or disposed on the substrate.

Assignees

• Lg Display Co Ltd

Inventors

• Nam Kyoung-Jin
• Kim Jeong-Oh
• Kim Yong-Min
• Park Eun-Young

Classifications

• H10W46/301

  for alignment · CPC title

• H10W46/00

  Marks applied to devices, e.g. for alignment or identification · CPC title

• H01L27/1218

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic

• H01L27/1288

  Electricity · mapped topic