IP Library Granted Patent US 11,362,161
Granted Patent B2
US 11,362,161 · App. 16/823,119 · Granted Jun 14, 2022

Display device

Inventors: Young In Hwang (Yongin-si, KR); Ji Hye Kong (Yongin-si, KR); Suk Hoon Ku (Yongin-si, KR); Sung Wook Kim (Yongin-si, KR); Jin A Lee (Yongin-si, KR); Yun Sik Joo (Yongin-si, KR)
Assignee: Samsung Display Co., Ltd.
H01L27/3262G09G3/3233G09G3/2007G09G3/3266G09G3/3275G09G2300/0426G09G2300/0809G09G2310/08G09G2320/0233G09G2320/0247H01L27/1251H01L29/78696
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Quick Facts
Patent No.
US 11,362,161
App. No.
16/823,119
Granted
Jun 14, 2022
Kind
B2
Abstract

A display device includes pixels. Each of the pixels includes: a first transistor including a gate electrode connected to a first node, a first electrode connected to a second node, and a second electrode connected to a third node; a second transistor including a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the second node; a first sub-transistor including a gate electrode connected to the first scan line, a first electrode connected to the first node, and a second electrode connected to a fourth node; and a second sub-transistor including a gate electrode connected to the first scan line, a first electrode connected to the fourth node, and a second electrode connected to the third node. A channel width of the second sub-transistor is wider than a channel width of the first sub-transistor.

Claims (37)

1. A display device comprising:

pixels,

wherein each of the pixels comprises:

a first transistor comprising a gate electrode of the first transistor connected to a first node, a first electrode of the first transistor connected to a second node, and a second electrode of the first transistor connected to a third node;

a second transistor comprising a gate electrode of the second transistor connected to a first scan line, a first electrode of the second transistor connected to a data line, and a second electrode of the second transistor connected to the second node;

a first sub-transistor comprising a gate electrode of the first sub-transistor connected to the first scan line, a first electrode of the first sub-transistor connected to the first node, and a second electrode of the first sub-transistor connected to a fourth node; and

a second sub-transistor comprising a gate electrode of the second sub-transistor connected to the first scan line, a first electrode of the second sub-transistor connected to the fourth node, and a second electrode of the second sub-transistor connected to the third node, and

wherein a channel width of the second sub-transistor is wider than a channel width of the first sub-transistor.

2. The display device of claim 1 , wherein the channel width of the first sub-transistor is narrower than a first electrode region width or a second electrode region width of the first sub-transistor.

3. The display device of claim 2 , wherein a channel of the first sub-transistor comprises a concave portion.

4. The display device of claim 1 , wherein the channel width of the second sub-transistor is wider than a first electrode region width or a second electrode region width of the second sub-transistor.

5. The display device of claim 4 , wherein a channel of the second sub-transistor comprises a convex portion.

6. The display device of claim 1 , wherein a channel length of the second sub-transistor is equal to or shorter than a channel length of the first sub-transistor.

7. The display device of claim 1 , wherein each of the pixels further comprises:

a third sub-transistor comprising a gate electrode of the third sub-transistor connected to a second scan line, a first electrode of the third sub-transistor connected to the first node, and a second electrode of the third sub-transistor connected to a fifth node; and

a fourth sub-transistor comprising a gate electrode of the fourth sub-transistor connected to the second scan line, a first electrode of the fourth sub-transistor connected to the fifth node, and a second electrode of the fourth sub-transistor connected to an initialization line, and

wherein a channel width of a third sub-transistor is wider than the channel width of the first sub-transistor.

8. The display device of claim 7 , wherein the channel width of the third sub-transistor is wider than at least one of a first electrode region width and a second electrode region width of the third sub-transistor.

9. The display device of claim 8 , wherein a channel of the third sub-transistor comprises a convex portion.

10. The display device of claim 1 , wherein each of the pixels further comprises:

a third sub-transistor comprising a gate electrode of the third sub-transistor connected to a second scan line, a first electrode of the third sub-transistor connected to the first node, and a second electrode of the third sub-transistor connected to a fifth node; and

a fourth sub-transistor comprising a gate electrode of the fourth sub-transistor connected to the second scan line, a first electrode of the fourth sub-transistor connected to the fifth node, and a second electrode of the fourth sub-transistor connected to an initialization line, and

wherein a channel width of the fourth sub-transistor is wider than the channel width of the first sub-transistor.

11. The display device of claim 10 , wherein the channel width of the fourth sub-transistor is wider than a first electrode region width or a second electrode region width of the fourth sub-transistor.

12. The display device of claim 11 , wherein a channel of the fourth sub-transistor comprises a convex portion.

13. The display device of claim 1 , wherein each of the pixels further comprises a fourth transistor comprising a gate electrode of the fourth transistor connected to a second scan line, a first electrode of the fourth transistor connected to the first node, and a second electrode of the fourth transistor connected to an initialization line, and

wherein a channel width of the fourth transistor is wider than the channel width of the first sub-transistor.

14. A display device comprising:

pixels,

wherein each of the pixels comprises:

a first transistor comprising a gate electrode of the first transistor connected to a first node, a first electrode of the first transistor connected to a second node, and a second electrode of the first transistor connected to a third node;

a second transistor comprising a gate electrode of the second transistor connected to a first scan line, a first electrode of the second transistor connected to a data line, and a second electrode of the second transistor connected to the second node;

a first sub-transistor comprising a gate electrode of the first sub-transistor connected to the first scan line, a first electrode of the first sub-transistor connected to the first node, and a second electrode of the first sub-transistor connected to a fourth node; and

a second sub-transistor comprising a gate electrode of the second sub-transistor connected to the first scan line, a first electrode of the second sub-transistor connected to the fourth node, and a second electrode of the second sub-transistor connected to the third node, and

wherein a channel width of the first sub-transistor is wider than a channel width of the second sub-transistor.

15. The display device of claim 14 , wherein the channel width of the first sub-transistor is wider than a first electrode region width or a second electrode region width of the first sub-transistor.

16. The display device of claim 15 , wherein a channel of the first sub-transistor comprises a convex portion.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 18, 2020
From: HWANG, YOUNG IN; KONG, JI HYE; KU, SUK HOON; KIM, SUNG WOOK; LEE, JIN A; JOO, YUN SIK
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 052157/0555 →
Priority Claims (1)
KR 10-2019-0069610 · Jun 12, 2019 · national
Continuity (1)
Related Publication 20200395424A1 · Dec 17, 2020
Cited By (1)
US 12,354,553