Electronic device

Patent metadata

Field	Value
Publication number	US-11537232-B2
Application number	US-202117150074-A
Country	US
Kind code	B2
Filing date	Jan 15, 2021
Priority date	Apr 13, 2020
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

An electronic device includes: a display panel having an active area in which a plurality of pixels are disposed and a peripheral area disposed around the active area; a plurality of sensing electrodes disposed in the active area; and a first sensing line connected to one of the plurality of sensing electrodes and including a first portion disposed in the peripheral area, a second portion extending from the first portion and disposed in the active area, and a third portion extending from the second portion and disposed in the peripheral area.

First claim

What is claimed is:

1. An electronic device comprising:
a display panel having an active area in which a plurality of pixels are disposed and a peripheral area disposed around the active area;
a plurality of sensing electrodes disposed in the active area; and
a first signal line connected to one of the plurality of sensing electrodes, the first signal line comprising a first portion disposed in the peripheral area, a second portion extending from the first portion and disposed in the active area, and a third portion extending from the second portion and disposed in the peripheral area and spaced apart from the first portion,
wherein the second portion of the first signal line in the active area is connected between the first portion and the third portion of the first signal line in the peripheral area.

2. The electronic device of claim 1 , further comprising a second signal line connected to another of the plurality of sensing electrodes and comprising a fourth portion disposed in the peripheral area, a fifth portion extending from the fourth portion and disposed in the active area, and a sixth portion extending from the fifth portion and disposed in the peripheral area,
wherein the fifth portion of the second signal line in the active area is closer to the peripheral area than the second portion of the first signal line in the active area when viewed in plane.

3. The electronic device of claim 2 , wherein the second portion of the first signal line in the active area has a length greater than that of the fifth portion of the second signal line in the active area.

4. The electronic device of claim 2 , wherein the second portion of the first signal line in the active area has a width less than that of the fifth portion of the second signal line in the active area.

5. The electronic device of claim 2 , wherein the second portion of the first signal line in the active area has resistance greater than that of the fifth portion of the second signal line in the active area.

6. The electronic device of claim 2 , wherein each of the second portion of the first signal line in the active area and the fifth portion of the second signal line in the active area has a mesh structure.

7. The electronic device of claim 6 , wherein a mesh line of the second portion of the first signal line in the active area has a width equal to or less than that of a mesh line of the fifth portion of the second signal line in the active area.

8. The electronic device of claim 1 , wherein each of the plurality of sensing electrodes comprises a plurality of sensing patterns and a plurality of connection patterns, and the second portion of the first signal line in the active area and the plurality of sensing patterns are disposed on a same layer and comprise a same material.

9. The electronic device of claim 8 , further comprising a dummy electrode disposed between the second portion of the first signal line in the active area and the plurality of sensing patterns.

10. The electronic device of claim 1 , wherein each of the plurality of sensing electrodes comprises a plurality of sensing patterns and a plurality of connection patterns, and the second portion of the first signal line in the active area is disposed at a different level from the plurality of sensing patterns in a cross-sectional view.

11. The electronic device of claim 1 , wherein a boundary is disposed between the active area and the peripheral area, and the boundary comprises a partially curved boundary.

12. The electronic device of claim 11 , wherein the second portion of the first signal line in the active area is spaced apart from the peripheral area by the partially curved boundary therebetween when viewed in plane.

13. The electronic device of claim 11 , further comprising a second signal line connected to another of the plurality of sensing electrodes and spaced apart from the second portion by the partially curved boundary therebetween.

14. The electronic device of claim 1 , wherein the display panel is bent with respect to: a first bending axis extending in a first direction; a second bending axis extending in the first direction and spaced apart from the first bending axis in a second direction intersecting the first direction; a third bending axis extending in the second direction; and a fourth bending axis extending in the second direction and spaced apart from the third bending axis in the first direction,
wherein the active area overlaps the first bending axis, the second bending axis, the third bending axis, and the fourth bending axis when viewed in plane.

15. An electronic device comprising:
a display panel having an active area configured to display an image, a peripheral area disposed around the active area, and a partially curved boundary between the active area and the peripheral area; and
a sensor comprising a plurality of sensing electrodes disposed in the active area and a plurality of signal lines electrically connected to the plurality of sensing electrodes, respectively,
wherein the plurality of signal lines comprise a first signal line electrically connected to one of the plurality of sensing electrodes, wherein:
the first signal line comprises a first extension portion disposed in the peripheral area and connected to the one of the plurality of sensing electrodes, a second extension portion disposed in the peripheral area and spaced apart from the first extension portion, and a connection portion disposed in the active area and connected between the first extension portion in the peripheral area and the second extension portion in the peripheral area, and
the connection portion of the first signal line is spaced apart from the peripheral area by the partially curved boundary therebetween when viewed in plane.

16. The electronic device of claim 15 , wherein:
the plurality of signal lines further comprise a second signal line electrically connected to another of the plurality of sensing electrodes,
a connection portion of the second signal line is disposed between the partially curved boundary and the connection portion of the first signal line when viewed in plane, and
the connection portion of the second signal line has a resistance value less than that of the connection portion of the first signal line.

17. The electronic device of claim 16 , wherein the connection portion of the first signal line has a length greater than that of the connection portion of the second signal line.

18. The electronic device of claim 16 , wherein the connection portion of the first signal line has a width less than that of the connection portion of the second signal line.

19. The electronic device of claim 16 , wherein each of the connection portion of the first signal line and the connection portion of the second signal line has a mesh structure, and a mesh line of the connection portion of the first signal line has a width equal to or less than that of a mesh line of the connection portion of the second signal line.

20. The electronic device of claim 16 , wherein each of the plurality of sensing electrodes comprises a plurality of sensing patterns and a plurality of connection patterns, and the connection portion of the first signal line, the connection portion of the second signal line, and the plurality of sensing electrodes are disposed on a same layer or are disposed at different levels in a cross-sectional view.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Wonjun
• Kim Il-Joo
• Kim Deokjung
• Kwak Wonkyu
• Jung Youngbae

Classifications

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F1/169 Primary

  the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes (G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033) · CPC title