Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2023320175-A1
Application number	US-202318130507-A
Country	US
Kind code	A1
Filing date	Apr 4, 2023
Priority date	Apr 4, 2022
Publication date	Oct 5, 2023
Grant date	—

Abstract

A display apparatus and a method of manufacturing a display apparatus are disclosed. The display apparatus includes a first substrate including a display area and a non-display area outside the display area, a pixel electrode located on the display area of the first substrate, a second substrate located over the first substrate with the pixel electrode therebetween, a sealing member located between the first substrate and the second substrate to attach the first substrate and the second substrate to each other, a metal pattern located on the first substrate to be adjacent to the sealing member at the inner side of the sealing member, and a connection wiring connected to the metal pattern and extending to an edge of the first substrate.

First claim

What is claimed is:

1 . A display apparatus comprising:
a first substrate comprising a display area and a non-display area outside the display area; a pixel electrode located on the display area of the first substrate; a second substrate located over the first substrate with the pixel electrode therebetween; a sealing member located between the first substrate and the second substrate to attach the first substrate and the second substrate to each other; a metal pattern arranged on the first substrate to be adjacent to the sealing member at an inner side of the sealing member; and a connection wiring connected to the metal pattern and extending to an edge of the first substrate.

2 . The display apparatus of claim 1 , wherein the metal pattern contacts an inner surface of the sealing member.

3 . The display apparatus of claim 1 , further comprising a gate wiring located on the non-display area of the first substrate,
wherein the gate wiring is located at the inner side of the sealing member in a plan view.

4 . The display apparatus of claim 3 , wherein the metal pattern overlaps the gate wiring in the plan view.

5 . The display apparatus of claim 4 , wherein the gate wiring comprises a first gate wiring and a second gate wiring, which are spaced apart from each other with the metal pattern therebetween, and a bridge line overlapping the metal pattern, in the plan view,
an insulating layer is located between a layer where the bridge line is located, and a layer where the first gate wiring and the second gate wiring are located, and the first gate wiring and the second gate wiring are electrically connected through the bridge line.

6 . The display apparatus of claim 5 , wherein the connection wiring comprises a same material as a material of the first gate wiring and the second gate wiring.

7 . The display apparatus of claim 5 , further comprising a guard ring located on the non-display area, and arranged on the first substrate to overlap the sealing member in the plan view,
wherein the guard ring comprises a same material as a material of the bridge line.

8 . The display apparatus of claim 1 , further comprising a dam portion located on the non-display area of the first substrate to surround at least a part of the display area,
wherein the metal pattern is located between the sealing member and the dam portion in a plan view.

9 . The display apparatus of claim 1 , wherein the metal pattern comprises silver.

10 . The display apparatus of claim 1 , wherein the metal pattern and the pixel electrode comprise a same material.

11 . The display apparatus of claim 1 , wherein the metal pattern is located at a corner of the first substrate.

12 . The display apparatus of claim 11 , wherein the metal pattern is provided in plural so that a plurality of metal patterns are comprised, and the corner of the first substrate is provided in plural so that a plurality of corners are comprised,
wherein the plurality of metal patterns are located at the corners of the first substrate, respectively.

13 . The display apparatus of claim 1 , further comprising a first organic layer located at the inner side of the sealing member, and covering a top surface of the metal pattern.

14 . The display apparatus of claim 13 , further comprising a pixel-defining film located on the pixel electrode, and covering an edge of the pixel electrode and exposing a central portion of the pixel electrode,
wherein the first organic layer comprises a same material as a material of the pixel-defining film.

15 . The display apparatus of claim 13 , further comprising a second organic layer located between the metal pattern and the first substrate.

16 . The display apparatus of claim 1 , further comprising a color filter layer located on a bottom surface of the second substrate facing the first substrate, and comprising at least two color filters,
wherein the at least two color filters overlap each other on the non-display area in a plan view.

17 . The display apparatus of claim 16 , further comprising:
a refractive layer located on a bottom surface of the color filter layer facing the first substrate, and having a refractive index lower than a refractive index of the color filter layer; a capping layer located on a bottom surface of the refractive layer facing the first substrate, and having a refractive index higher than the refractive index of the refractive layer; and an attachment portion located between the capping layer and the sealing member.

18 . The display apparatus of claim 17 , wherein the attachment portion has a closed loop shape overlapping the sealing member in the plan view.

19 . The display apparatus of claim 1 , wherein the connection wiring is a part of a wiring, which connects the metal pattern to a monitoring pad located outside the edge of the first substrate.

20 . A method of manufacturing a display apparatus, the method comprising:
forming a first substrate comprising a display area and a non-display area surrounding the display area; forming a metal pattern on the non-display area of the first substrate, and forming a connection wiring, which electrically connects the metal pattern to a monitoring pad located outside the non-display area; attaching a second substrate to the first substrate by using a sealing member; and measuring a change in electrical characteristics of the metal pattern by using the monitoring pad.

Assignees

• Samsung Display Co Ltd

Inventors

• SEO ILhun
• Park Kyungwon
• Park Junho
• Jun Woosik

Classifications

• H10K50/805

  Electrodes · CPC title

• H10K59/8722 Primary

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

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title

• H10K59/122

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

• H10K59/131 Primary

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