Display device

Patent metadata

Field	Value
Publication number	US-2025069557-A1
Application number	US-202418944799-A
Country	US
Kind code	A1
Filing date	Nov 12, 2024
Priority date	Apr 8, 2022
Publication date	Feb 27, 2025
Grant date	—

Abstract

A display device comprising a scan write line to which a scan write signal is applied, a data line to which a data voltage is applied, and a pixel electrically connected to the scan write line and the data line. The pixel comprises a light emitting element, a driving transistor that provides a driving current to the light emitting element according to a voltage of a gate electrode, a first transistor that supplies a data voltage of the data line to a first electrode of the driving transistor according to the scan write signal of the scan write line, a first connection electrode electrically connected to a gate electrode of the driving transistor, a first gate connection electrode electrically connected to a gate electrode of the first transistor, and a second connection electrode that electrically connects the scan write line to the first gate connection electrode.

First claim

What is claimed is:

1 . A display device comprising:
a scan write line extending in a first direction; a data line extending in a second direction perpendicular to the first direction; a driving transistor configured to provide a driving current flowing from a first electrode to a second electrode according to a voltage of a gate electrode; a first transistor configured to connect the data line and the gate electrode of the driving transistor according to a scan write signal of the scan write line; a second transistor configured to connect the gate electrode and the second electrode of the driving transistor according to the scan write signal of the scan write line; a first connection electrode electrically connected to the gate electrode of the driving transistor; a first gate connection electrode including a gate electrode of the first transistor and electrically connected to the scan write line; and a second gate connection electrode including a gate electrode of the second transistor and electrically connected to the scan write line, wherein the first connection electrode is between the first gate connection electrode and the second gate connection electrode in the first direction.

2 . The display device of claim 1 , wherein
the first connection electrode extends in the second direction, and the first gate connection electrode extends in the first direction.

3 . The display device of claim 1 , wherein the first gate connection electrode, the first connection electrode and the second gate connection electrode do not overlap the data line.

4 . The display device of claim 1 , further comprising:
a driving voltage line extending in the second direction, wherein the first gate connection electrode overlaps the driving voltage line.

5 . The display device of claim 4 , wherein the first connection electrode and the second gate connection electrode do not overlap the driving voltage line.

6 . The display device of claim 1 , further comprising:
a second connection electrode connected to the first gate connection electrode and the scan write line; and a third connection electrode connected to the second gate electrode and the scan write line.

7 . The display device of claim 6 , wherein the first connection electrode, the second connection electrode and the third connection electrode include a same material.

8 . The display device of claim 6 , wherein each of the second connection electrode and the third connection electrode extends in the second direction.

9 . The display device of claim 8 , wherein a length of the first connection electrode in the second direction is smaller than a length of the second connection electrode in the second direction.

10 . The display device of claim 8 , wherein a length of the second connection electrode in the second direction is smaller than a length of the third connection electrode in the second direction.

11 . The display device of claim 6 , further comprising:
a scan initialization line extending in the first direction, wherein each of the second connection electrode and the third connection electrode overlaps the scan initialization line.

12 . The display device of claim 11 , wherein the first connection electrode does not overlap the scan initialization line.

13 . The display device of claim 11 , wherein a minimum distance between the scan write line and the first connection line is greater than a minimum distance between the scan initialization line and the first connection line.

14 . The display device of claim 11 , further comprising:
an initialization voltage line extending in the first direction; and a third transistor configured to connect the gate electrode and the initialization voltage line according to a scan initialization signal of the scan initialization line.

15 . The display device of claim 14 , wherein the scan write line is between the initialization voltage line and the scan initialization line in the second direction.

16 . The display device of claim 14 , wherein a minimum distance between the scan write line and the first connection line is smaller than a minimum distance between the initialization voltage line and the first connection line.

17 . The display device of claim 14 , wherein a minimum distance between the scan initialization line and the first connection line is smaller than a minimum distance between the initialization voltage line and the first connection line.

18 . The display device of claim 1 , wherein the first connection electrode is connected to the gate electrode of the driving transistor through a first contact hole and connected to a first electrode of the second transistor through a second contact hole.

19 . The display device of claim 6 , wherein the first connection electrode is between the second connection electrode and the third connection electrode in the first direction.

20 . The display device of claim 6 , wherein the second connection electrode, the third connection electrode and the scan write line include a same material.

21 . A display device comprising:
a scan write line extending in a first direction; a data line extending in a second direction perpendicular to the first direction; a driving voltage line extending in the second direction and space apart from the data line; a driving transistor configured to provide a driving current flowing from a first electrode to a second electrode according to a voltage of a gate electrode; a first transistor configured to connect the data line and the gate electrode of the driving transistor according to a scan write signal of the scan write line; and a first gate connection electrode including a gate electrode of the first transistor and electrically connected to the scan write line, wherein the first gate connection electrode overlaps the driving voltage line.

22 . The display device of claim 21 , wherein the first gate connection electrode extends in the first direction.

23 . The display device of claim 21 , further comprising:
a first connection electrode electrically connected to the gate electrode of the driving transistor; and a second connection electrode connected to the first gate connection electrode and the scan write line.

24 . The display device of claim 23 , wherein the first connection electrode and the second connection electrode include a same material.

25 . The display device of claim 23 , wherein the first gate connection electrode, the first connection electrode, and the first gate connection electrode do not overlap the data line.

26 . The display device of claim 23 , further comprising:
a second transistor configured to connect the gate electrode and the second electrode of the driving transistor according to the scan write signal of the scan write line; a second gate connection electrode including a gate electrode of the second transistor and electrically connected to the scan write line; and a third connection electrode connected to the second gate electrode and the scan write line.

27 . The display device of claim 26 , wherein the first connection electrode is between the first gate connection electrode and the second gate connection electrode in the first direction.

28 . The display device of claim 26 , wherein the first connection electrode, the second connection electrode and the third connection e

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Jun Won
• Kim Jae Won

Classifications

• G09G3/3233 Primary

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2310/0278

  Details of driving circuits arranged to drive both scan and data electrodes · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2320/0233

  Improving the luminance or brightness uniformity across the screen · CPC title

• G09G3/3291

  in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements · CPC title