Display apparatus and electronic device having the same

Patent metadata

Field	Value
Publication number	US-2026047287-A1
Application number	US-202519240989-A
Country	US
Kind code	A1
Filing date	Jun 17, 2025
Priority date	Aug 9, 2024
Publication date	Feb 12, 2026
Grant date	—

Abstract

A display apparatus includes a substrate including a first area, a second area, and a bending area between the first area and the second area; a plurality of test transistors on the second area; a first line extending in a first direction; a second line connected to the first line through a first connection line and a second connection line; and a test pad connected to the second line, wherein the first line includes a first-1 portion connected to the first connection line, a first-2 portion connected to the second connection line, and a first-3 portion between the first-1 portion and the first-2 portion, and wherein the plurality of test transistors are connected to the first-3 portion.

First claim

What is claimed is:

1 . A display apparatus comprising:
a substrate comprising a first area, a second area, and a bending area between the first area and the second area; a plurality of test transistors on the second area; a first line extending in a first direction; a second line connected to the first line through a first connection line and a second connection line; and a test pad connected to the second line, wherein the first line comprises a first-1 portion connected to the first connection line, a first-2 portion connected to the second connection line, and a first-3 portion between the first-1 portion and the first-2 portion, and wherein the plurality of test transistors are connected to the first-3 portion.

2 . The display apparatus of claim 1 , wherein the second line is spaced apart from the first line in a second direction crossing the first direction, and
wherein each of the first connection line and the second connection line extends in the second direction.

3 . The display apparatus of claim 2 , wherein the second line comprises a second-1 portion connected to the first connection line, a second-2 portion connected to the second connection line, and a second-3 portion between the second-1 portion and the second-2 portion, and
wherein the test pad is connected to the second-3 portion.

4 . The display apparatus of claim 3 , wherein the first area is symmetrical with respect to a symmetry line extending in the second direction, and
wherein the second area is asymmetrical with respect to the symmetry line.

5 . The display apparatus of claim 4 , wherein:
the second area comprises a second-1 area and a second-2 area; in a plan view, the second-1 area is positioned on one side of the symmetry line; in a plan view, the second-2 area is positioned on another side of the symmetry line; a size of the second-2 area is greater than a size of the second-1 area; and the test pad is on the second-2 area.

6 . The display apparatus of claim 2 , wherein the first area comprises a display area and a plurality of display elements on the display area, and
wherein each of the plurality of test transistors is electrically connected to a corresponding one of a plurality of data lines electrically connected to the plurality of display elements.

7 . A display apparatus comprising:
a substrate comprising a first area, a second area, and a bending area between the first area and the second area; a plurality of first test transistors, a plurality of second test transistors, and a plurality of third test transistors on the second area; a first line extending in a first direction; a second line connected to the first line through a first connection line and a second connection line; and a first test pad connected to the second line, wherein the first line comprises a first-1 portion connected to the first connection line, a first-2 portion connected to the second connection line, and a first-3 portion between the first-1 portion and the first-2 portion, and wherein the plurality of first test transistors are connected to the first-3 portion.

8 . The display apparatus of claim 7 , wherein the second line is spaced apart from the first line in a second direction crossing the first direction, and
wherein each of the first connection line and the second connection line extends in the second direction.

9 . The display apparatus of claim 8 , wherein the second line comprises a second-1 portion connected to the first connection line, a second-2 portion connected to the second connection line, and a second-3 portion between the second-1 portion and the second-2 portion, and
wherein the first test pad is connected to the second-3 portion.

10 . The display apparatus of claim 7 , further comprising:
a third line extending in the first direction; a fourth line connected to the third line through a third connection line and a fourth connection line; and a second test pad connected to the fourth line, wherein the third line comprises a third-1 portion connected to the third connection line, a third-2 portion connected to the fourth connection line, and a third-3 portion between the third-1 portion and the third-2 portion, and wherein the plurality of second test transistors are connected to the third-3 portion.

11 . The display apparatus of claim 10 , wherein the fourth line is spaced apart from the third line in a second direction crossing the first direction,
wherein the fourth line extends in the first direction, and wherein each of the third connection line and the fourth connection line extends in the second direction.

12 . The display apparatus of claim 10 , wherein the fourth line comprises a fourth-1 portion connected to the third connection line, a fourth-2 portion connected to the fourth connection line, and a first-3 portion between the fourth-1 portion and the fourth-2 portion, and
wherein the second test pad is connected to the fourth-3 portion.

13 . The display apparatus of claim 10 , further comprising:
a fifth line extending in the first direction; a sixth line connected to the fifth line through a fifth connection line and a sixth connection line; and a third test pad connected to the sixth line, wherein the fifth line comprises a fifth-1 portion connected to the fifth connection line, a fifth-2 portion connected to the sixth connection line, and a fifth-3 portion between the fifth-1 portion and the fifth-2 portion, and wherein the plurality of third test transistors are connected to the fifth-3 portion.

14 . The display apparatus of claim 13 , wherein the sixth line is spaced apart from the fifth line in a second direction crossing the first direction,
wherein the sixth line extends in the first direction, and wherein each of the fifth connection line and the sixth connection line extends in the second direction.

15 . The display apparatus of claim 13 , wherein the sixth line comprises a sixth-1 portion connected to the fifth connection line, a sixth-2 portion connected to the sixth connection line, and a sixth-3 portion between the sixth-1 portion and the sixth-2 portion, and
wherein the third test pad is connected to the sixth-3 portion.

16 . The display apparatus of claim 7 , wherein the first area is symmetrical with respect to a symmetry line extending in a second direction crossing the first direction, and
wherein the second area is asymmetrical with respect to the symmetry line.

17 . The display apparatus of claim 16 , wherein:
the second area comprises a second-1 area and a second-2 area; in a plan view, the second-1 area is positioned on one side of the symmetry line; in a plan view, the second-2 area is positioned on another side of the symmetry line; a size of the second-2 area is greater than a size of the second-1 area; and the first test pad is on the second-2 area.

18 . The display apparatus of claim 7 , wherein:
the first area comprises a display area and a plurality of display elements on the display area; each of the plurality of first test transistors is electrically connected to a corresponding one of a plurality of first data lines, the plurality of first data lines being electrically connected to display elements capable of emitting first-color light from among the plurality of display elements; each of the plurality of second test transistors is electrically connected to a corresponding one of a plurality of second data lines, the plurality of second data lines being electrically connected to display elements capable of emitti

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Haeyeon
• Lee Jungwoo
• Ham Daewoong
• Choi Minhee
• Lee Wonse

Classifications

• G09G2320/0295

  by monitoring each display pixel · CPC title

• G09G3/006

  Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309) · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/1315

  comprising structures specially adapted for lowering the resistance · CPC title