Display device including a power supply voltage wiring having openings

Patent metadata

Field	Value
Publication number	US-11552152-B2
Application number	US-201916250044-A
Country	US
Kind code	B2
Filing date	Jan 17, 2019
Priority date	Jan 23, 2018
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A display device including a lower substrate having a display region including a plurality of pixel regions, and a peripheral region surrounding the display region; a plurality of pixel structures in the plurality of pixel regions on the lower substrate; an upper substrate on the plurality of pixel structures; a seal between the lower substrate and the upper substrate in the peripheral region; and a power supply voltage wiring between the seal and the lower substrate in the peripheral region, wherein the power supply voltage wiring partially overlaps the seal, and the power supply voltage wiring includes a plurality of first openings in a portion thereof that protrudes inwardly from the seal in a first direction extending from the peripheral region into the display region.

First claim

What is claimed is:

1. A display device, comprising:
a lower substrate having:
a display region including a plurality of pixel regions, and
a peripheral region surrounding the display region;

a plurality of pixel structures in the plurality of pixel regions on the lower substrate;
an upper substrate on the plurality of pixel structures;
a seal between the lower substrate and the upper substrate in the peripheral region; and
a power supply voltage wiring between the seal and the lower substrate in the peripheral region, wherein:
the power supply voltage wiring partially overlaps the seal,
the power supply voltage wiring includes a plurality of first openings,
the first openings are formed in a portion, which protrudes from a side wall of the seal in a first direction extending from the peripheral region into the display region, of the power supply voltage wiring, and
the side wall of the seal is a boundary of the seal located most adjacent to the pixel structures.

2. The display device as claimed in claim 1 , wherein the first openings are arranged along a boundary of the display region and the peripheral region in a second direction that is perpendicular to the first direction.

3. The display device as claimed in claim 1 , wherein the power supply voltage wiring further includes a plurality of second openings in a portion thereof that overlap the seal.

4. The display device as claimed in claim 3 , wherein:
the second openings are spaced apart from the first openings by a predetermined distance,
the first openings and the second openings are arranged in a second direction that is perpendicular to the first direction, and
the first openings and the second openings are aligned in parallel to each other.

5. The display device as claimed in claim 3 , further comprising a plurality of semiconductor elements between the lower substrate and the pixel structures,
wherein each of the semiconductor elements includes:
an active layer on the lower substrate;
a gate electrode on the active layer; and
source and drain electrodes on the gate electrode.

6. The display device as claimed in claim 5 , wherein the power supply voltage wiring and the source and drain electrodes are located at a same layer.

7. The display device as claimed in claim 5 , further comprising:
a gate insulation layer on the lower substrate, the gate insulation layer covering the active layer;
an insulating interlayer on the gate insulation layer, the insulating interlayer covering the gate electrode;
a planarization layer on the insulating interlayer, the planarization layer covering the source and drain electrodes; and
a pixel defining layer on the planarization layer.

8. The display device as claimed in claim 7 , wherein the seal is in contact with an upper surface of the planarization layer through the second openings.

9. The display device as claimed in claim 7 , wherein at least a part of the power supply voltage wiring protruding inwardly from the seal overlaps and directly contacts the planarization layer.

10. The display device as claimed in claim 3 , wherein:
the power supply voltage wiring further includes a plurality of third openings spaced apart from the second openings by a predetermined distance, the third openings being arranged in a second direction that is perpendicular to the first direction, and
the second openings and the third openings are aligned in parallel to each other.

11. The display device as claimed in claim 1 , further comprising a touch wiring structure along a boundary of the display region and the peripheral region on the upper substrate in the peripheral region, the touch wiring structure including a plurality of wirings.

12. The display device as claimed in claim 11 , wherein the touch wiring structure overlaps the portion of the power supply voltage wiring protruding inwardly from the seal.

13. The display device as claimed in claim 1 , wherein the plurality of pixel structures includes:
a plurality of lower electrodes;
a plurality of light emitting layers on the lower electrodes; and
an upper electrode on the light emitting layers.

14. The display device as claimed in claim 13 , wherein:
the upper electrode extends from the display region into the peripheral region, and
the upper electrode located in the peripheral region is electrically connected to the power supply voltage wiring.

15. The display device as claimed in claim 14 , further comprising a first connection pattern between the upper electrode and the power supply voltage wiring,
wherein the upper electrode and the power supply voltage wiring are electrically connected through the first connection pattern.

16. The display device as claimed in claim 15 , wherein:
a first end of the first connection pattern is in direct contact with the upper electrode,
a second end of the first connection pattern is in direct contact with the power supply voltage wiring, and
the first connection pattern and the plurality of lower electrodes are located at a same layer.

17. A display device, comprising:
a lower substrate having:
a display region including a plurality of pixel regions, and
a peripheral region surrounding the display region;

a plurality of pixel structures in the plurality of pixel regions on the lower substrate;
an upper substrate on the plurality of pixel structures;
a seal between the lower substrate and the upper substrate in the peripheral region;
a power supply voltage wiring between the seal and the lower substrate in the peripheral region, the power supply voltage wiring partially overlapping the seal, the power supply voltage wiring including a plurality of first openings in a portion thereof that are overlapped and at least partially filled with the seal, and the power supply voltage wiring having a portion that protrudes inwardly from the seal in a first direction extending from the peripheral region into the display region;
a touch wiring structure along a boundary between the display region and the peripheral region in the peripheral region on the upper substrate, the touch wiring structure overlapping the portion of the power supply voltage wiring that protrudes inwardly from the seal; and
a blocker surrounding the touch wiring structure in the peripheral region on a lower surface of the upper substrate, the blocker overlapping a remaining portion of the power supply voltage wiring protruded from the seal.

18. The display device as claimed in claim 17 , wherein each of the plurality of first openings directly contacts an insulating layer below the power supply voltage wiring.

Assignees

• Samsung Display Co Ltd

Inventors

• Shim Hyunsub
• Lee Sunyoul
• Jung Sun-Kyo
• Cho Sungho
• Han Sooyeon
• Park Hyunae
• Lee Ji-Eun

Classifications

• G09F9/30 Primary

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title

• H01L27/3276 Primary

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic

• H01L51/5221

  Electricity · mapped topic

• H01L51/5234

  Electricity · mapped topic