IP Library › Granted Patent US 12,733,366
Granted Patent B2
US 12,733,366 · App. 19/201,266 · Granted Sep 8, 2026

Display device

Inventors: Min Hee Choi (Hwaseong-si, KR); Ji-Eun Lee (Seoul, KR); Jin Tae Jeong (Suwon-si, KR); Yun Sik Joo (Goyang-si, KR)
Assignee: Samsung Display Co., Ltd.
H10K59/1315G09G3/3258G09G3/3233G09G3/3659G09G2300/0426G09G2300/043G09G2300/0809G09G2300/0819G09G2300/0842G09G2310/0202G09G2310/0254
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Quick Facts
Patent No.
US 12,733,366
App. No.
19/201,266
Granted
Sep 8, 2026
Kind
B2
Abstract

A display device includes a light emitting diode electrically connected between a driving voltage line and a common voltage line; a driving transistor electrically connected between the driving voltage line and the light emitting diode; a second transistor electrically connected between a first electrode of the driving transistor electrically connected to the driving voltage line and a data line; a first scan line electrically connected to a gate electrode of the second transistor; a third transistor electrically connected between a second electrode of the driving transistor electrically connected to the light emitting diode and a gate electrode of the driving transistor; and a connection electrode that connects the gate electrode of the driving transistor and the third transistor, wherein at least a part of a contact portion where the connection electrode contacts the third transistor does not overlap the first scan line.

Claims (64)

1 . A display device comprising:

a light emitting diode electrically connected between a driving voltage line and a common voltage line;

a driving transistor electrically connected between the driving voltage line and the light emitting diode;

a second transistor electrically connected between a first electrode of the driving transistor and a data line, the first electrode of the driving transistor being electrically connected to the driving voltage line;

a first scan line electrically connected to a gate electrode of the second transistor;

a third transistor electrically connected between a second electrode of the driving transistor and a gate electrode of the driving transistor, the second electrode of the driving transistor being electrically connected to the light emitting diode;

a second scan line electrically connected to a gate electrode of the third transistor; and

a connection electrode electrically connected to the gate electrode of the driving transistor at a first contact portion, and electrically connected to the third transistor at a second contact portion,

wherein the connection electrode comprises a first portion extending in a first direction, and a second portion connected to the first portion and extending in a second direction different from the first direction.

2 . The display device of claim 1 , wherein at least a part of the second contact portion does not overlap with the first scan line in a plan view.

3 . The display device of claim 2 , wherein the second contact portion is spaced from the second scan line in a plan view.

4 . The display device of claim 3 , wherein the second contact portion is between the first scan line and the second scan line in a plan view.

5 . The display device of claim 1 , wherein the connection electrode does not overlap with the first scan line in a plan view.

6 . The display device of claim 5 , wherein the connection electrode crosses the second scan line in a plan view.

7 . The display device of claim 1 , wherein the second scan line is between the first contact portion and the second contact portion in a plan view.

8 . The display device of claim 1 , wherein a point at which the first portion and the second portion are connected to each other is located between the first scan line and the second scan line in a plan view.

9 . The display device of claim 1 , further comprising:

an initialization voltage line; and

a fourth transistor electrically connected between the initialization voltage line and a second electrode of the third transistor,

wherein:

the third transistor and the fourth transistor comprise a first semiconductor;

the first semiconductor comprises a third channel of the third transistor and a fourth channel of the fourth transistor; and

the second contact portion is on the first semiconductor, and is located between the third channel and the fourth channel in a plan view.

10 . The display device of claim 9 , wherein:

the first semiconductor is an oxide semiconductor; and

the driving transistor and the second transistor comprise a polycrystalline semiconductor.

11 . The display device of claim 1 , further comprising:

a boost capacitor electrically connected between the gate electrode of the second transistor and a second electrode of the third transistor,

wherein at least a part of the second contact portion does not overlap with the boost capacitor.

12 . The display device of claim 1 , wherein the third transistor comprises:

a first electrode electrically connected to the second electrode of the driving transistor; and

a second electrode electrically connected to the connection electrode, and

wherein the second electrode of the third transistor overlaps with the connection electrode in a plan view.

13 . The display device of claim 1 , further comprising an insulating layer between a second electrode of the third transistor and the connection electrode,

wherein:

the insulating layer defines an opening overlapping with the second electrode of the third transistor and the connection electrode;

the second electrode of the third transistor is electrically connected to the connection electrode through the opening; and

the opening does not overlap with the first scan line.

14 . The display device of claim 13 , wherein the second contact portion is located in the opening.

15 . A display device comprising:

a light emitting diode electrically connected between a driving voltage line and a common voltage line;

a driving transistor electrically connected between the driving voltage line and the light emitting diode;

a second transistor electrically connected between a first electrode of the driving transistor and a data line, the first electrode of the driving transistor being electrically connected to the driving voltage line;

a first scan line electrically connected to a gate electrode of the second transistor;

a third transistor electrically connected between a second electrode of the driving transistor and a gate electrode of the driving transistor, the second electrode of the driving transistor being electrically connected to the light emitting diode;

a second scan line electrically connected to a gate electrode of the third transistor; and

a connection electrode electrically connected to the gate electrode of the driving transistor at a first contact portion, and electrically connected to the third transistor at a second contact portion,

wherein at least a part of the second contact portion does not overlap with the first scan line in a plan view.

16 . The display device of claim 15 , wherein the second contact portion is between the first scan line and the second scan line in a plan view.

17 . The display device of claim 15 , wherein the connection electrode does not overlap with the first scan line in a plan view.

18 . The display device of claim 15 , wherein the second scan line is between the first contact portion and the second contact portion in a plan view.

19 . The display device of claim 15 , wherein:

the connection electrode comprises a first portion extending in a first direction, and a second portion connected to the first portion and extending in a second direction different from the first direction; and

a point at which the first portion and the second portion are connected to each other is located between the first scan line and the second scan line in a plan view.

20 . A device comprising:

a substrate;

a light emitting diode on the substrate;

a driving transistor electrically connected between a driving voltage line and the light emitting diode;

a second transistor electrically connected between a first electrode of the driving transistor and a data line, the first electrode of the driving transistor being electrically connected to the driving voltage line;

a first scan line electrically connected to a gate electrode of the second transistor;

a third transistor electrically connected between a second electrode of the driving transistor and a gate electrode of the driving transistor, the second electrode of the driving transistor being electrically connected to the light emitting diode;

a second scan line electrically connected to a gate electrode of the third transistor; and

a connection electrode electrically connected to the gate electrode of the driving transistor at a first contact portion, and electrically connected to the third transistor at a second contact portion,

wherein the connection electrode comprises a first portion extending in a first direction, and a second portion connected to the first portion and extending in a second direction different from the first direction.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 7, 2025
From: CHOI, MIN HEE; LEE, JI-EUN; JEONG, JIN TAE; JOO, YUN SIK
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 071052/0675 →
Priority Claims (1)
KR 10-2020-0066617 · Jun 2, 2020 · national
Continuity (4)
Continuation 18429598 · Feb 1, 2024
Continuation 17941207 · Sep 9, 2022
Continuation 17245576 · Apr 30, 2021
Related Publication 20250268046A1 · Aug 21, 2025
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