IP Library › Granted Patent US 11,620,938
Granted Patent B2
US 11,620,938 · App. 17/535,112 · Granted Apr 4, 2023

Display device and tiled display including the same

Inventors: Dong Hee Shin (Asan-si, KR); Na Hyeon Cha (Yongin-si, KR); Sun Kwun Son (Suwon-si, KR); Kye Uk Lee (Seoul, KR)
Assignee: Samsung Display Co., Ltd.
G09G3/32G09G2300/026G09G2300/0408G09G2300/0426G09G2310/0267G09G2310/0275G09G2310/08G09G2320/0209
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Quick Facts
Patent No.
US 11,620,938
App. No.
17/535,112
Filed
Nov 24, 2021
Granted
Apr 4, 2023
Kind
B2
Art Unit
2622
USPC
345/55
Abstract

A display device includes a display area including a pixel, a non-display area around the display area, and a display driver electrically connected to the non-display area. The display area includes a data line extending in a first direction and configured to supply data voltage received from the display driver to the pixel, a power line at one side of the pixel and extending in the first direction to supply a supply voltage received from the display driver to the pixel, a gate input line electrically connected to the display driver and extending in the first direction, the gate input line including a scan clock line and a scan clock bar line, and a gate driver connected to the gate input line and configured to receive a gate input signal from the gate input line. The scan clock line and the scan clock bar line cross at least once.

Claims (90)

1. A display device comprising:

a display area comprising a pixel;

a non-display area around the display area; and

a display driver electrically connected to the non-display area,

wherein the display area comprises:

a data line extending in a first direction and configured to supply data voltage received from the display driver to the pixel;

a power line at one side of the pixel and extending in the first direction to supply a supply voltage received from the display driver to the pixel;

a gate input line electrically connected to the display driver and extending in the first direction, the gate input line comprising a scan clock line comprising a first portion and a second portion each extending in the first direction, and a scan clock bar line comprising a first portion and a second portion each extending in the first direction; and

a gate driver connected to the gate input line and configured to receive a gate input signal from the gate input line,

wherein the scan clock line and the scan clock bar line cross at least once between the first portions and the second portions of the scan clock line and the scan clock bar line.

2. The display device of claim 1 , wherein the scan clock line is configured to supply a scan clock signal to the gate driver, wherein the scan clock bar line is configured to supply a scan clock bar signal to the gate driver, and wherein the scan clock signal and the scan clock bar signal have opposing phases.

3. The display device of claim 2 , wherein the gate driver comprises:

a first gate transistor configured to provide the scan clock signal to a gate signal output unit based on a voltage at a first node; and

a second gate transistor configured to discharge the gate signal output unit based on the scan clock bar signal.

4. The display device of claim 1 , wherein the scan clock line comprises the first portion, a line connection electrode, and the second portion,

wherein the scan clock bar line comprises:

the first portion corresponding to the first portion of the scan clock line;

a bent portion crossing the line connection electrode; and

the second portion corresponding to the second portion of the scan clock line, and

wherein the line connection electrode is at a layer different from the scan clock bar line and the first and second portions of the scan clock line.

5. The display device of claim 4 , wherein the first portion of the scan clock line is located closer to the power line than the first portion of the scan clock bar line is to the power line, and

wherein the second portion of the scan clock bar line is located closer to the power line than the second portion of the scan clock line is to the power line.

6. The display device of claim 4 , wherein a length of the first portion of the scan clock line is equal to a length of the second portion of the scan clock bar line.

7. The display device of claim 4 , wherein the power line comprises an initialization voltage line located at an outermost position of the pixel, and

wherein a length of a portion of the scan clock line that directly faces the initialization voltage line is equal to a length of a portion of the scan clock bar line that directly faces the initialization voltage line.

8. The display device of claim 4 , wherein the first portion of the scan clock line is colinear to the second portion of the scan clock bar line, and

wherein the second portion of the scan clock line is colinear to the first portion of the scan clock bar line.

9. The display device of claim 1 , wherein the scan clock line comprises the first portion, a first line connection electrode, the second portion, a second line connection electrode, and a third portion,

wherein the scan clock bar line comprises:

the first portion corresponding to the first portion of the scan clock line;

a first bent portion crossing the first line connection electrode;

the second portion corresponding to the second portion of the scan clock line;

a second bent portion crossing the second line connection electrode; and

a third portion corresponding to the third portion of the scan clock line, and

wherein the first and second line connection electrodes are at a different layer from the scan clock bar line.

10. The display device of claim 9 , wherein the first portion and the third portion of the scan clock line are located closer to the power line than the first portion and the third portion of the scan clock bar line are to the power line, and

wherein the second portion of the scan clock bar line is located closer to the power line than the second portion of the scan clock line is to the power line.

11. The display device of claim 9 , wherein a sum of lengths of the first portion and the third portion of the scan clock line is equal to a length of the second portion of the scan clock bar line.

12. The display device of claim 9 , wherein the power line comprises an initialization voltage line located at an outermost position of the pixel, and

wherein a sum of lengths of portions of the scan clock line that directly face the initialization voltage line is equal to a length of a portion of the scan clock bar line that faces the initialization voltage line.

13. The display device of claim 9 , wherein the first portion and the third portion of the scan clock line are colinear to the second portion of the scan clock bar line, and

wherein the second portion of the scan clock line is colinear to the first portion and the third portion of the scan clock bar line.

14. The display device of claim 1 , wherein the gate input line further comprises:

a carry clock line configured to supply a carry clock signal to the gate driver; and

a carry clock bar line configured to supply a carry clock bar signal to the gate driver,

wherein the carry clock signal and the carry clock bar signal have opposing phases.

15. A display device comprising:

a display area comprising a pixel;

a non-display area around the display area; and

a display driver electrically connected to the non-display area,

wherein the display area comprises:

a data line extending in a first direction and configured to supply data voltage received from the display driver to the pixel;

a power line at one side of the pixel and extending in the first direction to supply a supply voltage received from the display driver to the pixel;

a gate input line electrically connected to the display driver and extending in the first direction, the gate input line comprising a scan clock line and a scan clock bar line; and

a gate driver connected to the gate input line and configured to receive a gate input signal from the gate input line,

wherein the scan clock line and the scan clock bar line cross at least once,

and

wherein the gate input line further comprises:

a carry clock line configured to supply a carry clock signal to the gate driver; and

a carry clock bar line configured to supply a carry clock bar signal to the gate driver,

wherein the carry clock signal and the carry clock bar signal have opposing phases,

wherein the carry clock line comprises a first portion, a line connection electrode, and a second portion,

wherein the carry clock bar line comprises:

a first portion corresponding to the first portion of the carry clock line;

a bent portion crossing the line connection electrode; and

a second portion corresponding to the second portion of the carry clock line, and

wherein the line connection electrode is at a layer different from the carry clock bar line and the first and second portions of the carry clock line.

16. The display device of claim 15 , wherein the first portion of the carry clock line is located closer to the power line than the first portion of the carry clock bar line is to the power line, and

wherein the second portion of the carry clock bar line is located closer to the power line than the second portion of the carry clock line is to the power line.

17. The display device of claim 15 , wherein a length of the first portion of the carry clock line is equal to a length of the second portion of the carry clock bar line.

18. The display device of claim 14 , wherein the carry clock line comprises a first portion, a first line connection electrode, a second portion, a second line connection electrode, and a third portion,

wherein the carry clock bar line comprises:

a first portion corresponding to the first portion of the carry clock line;

a first bent portion crossing the first line connection electrode;

a second portion corresponding to the second portion of the carry clock line;

a second bent portion crossing the second line connection electrode; and

a third portion corresponding to the third portion of the carry clock line, and

wherein the first and second line connection electrodes are at a different layer from the carry clock bar line.

19. The display device of claim 18 , wherein the first portion and the third portion of the carry clock line is located closer to the power line than the first portion and the third portion of the carry clock bar line are to the power line, and

wherein the second portion of the carry clock bar line is located closer to the power line than the second portion of the carry clock line is to the power line.

20. The display device of claim 18 , wherein a sum of lengths of the first portion and the third portion of the carry clock line is equal to a length of the second portion of the carry clock bar line.

21. A tiled display comprising:

a plurality of display devices, each of the plurality of display devices comprising a display area comprising pixels, a non-display area around the display area, and a display driver electrically connected to the non-display area; and

a coupling member coupling the plurality of display devices with one another,

wherein the display area comprises:

a data line extending in a first direction and configured to supply data voltage received from the display driver to the pixel;

a power line at one side of the pixel and extending in the first direction to supply a supply voltage received from the display driver to the pixel;

a gate input line electrically connected to the display driver and extending in the first direction, the gate input line comprising a scan clock line comprising a first portion and a second portion each extending in the first direction, and a scan clock bar line comprising a first portion and a second portion each extending in the first direction; and

a gate driver configured to receive a gate input signal from the gate input line, and

wherein the scan clock line and the scan clock bar line cross at least once between the first portions and the second portions of the scan clock line and the scan clock bar line.

Assignments (1)
CORRECTIVE ASSIGNMENT TO CORRECT THE THE APPLICATION NUMBER PREVIOUSLY RECORDED AT REEL: 058296 FRAME: 0068. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Dec 16, 2021
From: CHA, NA HYEON; SHIN, DONG HEE; SON, SUN KWUN; LEE, KYE UK
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 058520/0618 →
Priority Claims (1)
KR 10-2021-0033697 · Mar 16, 2021 · national
Continuity (1)
Related Publication 20220301493A1 · Sep 22, 2022