Touch panel and display device including the same

Patent metadata

Field	Value
Publication number	US-12386471-B2
Application number	US-202418581394-A
Country	US
Kind code	B2
Filing date	Feb 20, 2024
Priority date	Jul 10, 2023
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

An embodiment provides a display panel including: a base substrate; a touch electrode disposed on the base substrate; and a connection wire that connects the touch electrode to a touch panel driver, wherein a width of a first conductive pattern forming the touch electrode is different from a width of a second conductive pattern forming the connection wire.

First claim

What is claimed is:

1. A touch panel comprising:
a base substrate;
a plurality of touch electrodes disposed on the base substrate; and
a plurality of connection wires disposed on the base substrate, each of the plurality of connection wires connecting each of the plurality of touch electrodes to a touch panel driver,
wherein each of the plurality of touch electrodes includes a plurality of first conductive patterns, and each of the plurality of connection wires includes a plurality of second conductive patterns, and
wherein a width of one of the plurality of first conductive patterns included in each of the plurality of touch electrodes is different from a width of one of the plurality of second conductive patterns included in each of the plurality of connection wires.

2. The touch panel of claim 1 , wherein
the width of one of the plurality of first conductive patterns is wider than the width of one of the plurality of second conductive patterns.

3. The touch panel of claim 1 , wherein
the width of one of the plurality of first conductive patterns is greater than about 3 μm, and
the width of one of the plurality of second conductive patterns is smaller than about 3 μm.

4. The touch panel of claim 1 , further comprising:
a light blocking member disposed on each of the plurality of touch electrodes; and
a color filter disposed at a position corresponding to an opening defined by the light blocking member.

5. The touch panel of claim 4 , wherein
a width of the light blocking member is greater than at least one of the width of the plurality of first conductive patterns and the width of the plurality of second conductive patterns.

6. The touch panel of claim 1 , wherein
each of the plurality of connection wires is adjacent to each of the plurality of touch electrodes in a first direction, and
a portion of each of the plurality of touch electrodes further includes a protruding portion that protrudes in a second direction crossing the first direction.

7. The touch panel of claim 1 , wherein
each of the plurality of connection wires is adjacent to each of the plurality of touch electrodes in a first direction, and
a portion of each of the plurality of connection wires further includes a protruding portion that protrudes in a second direction crossing the first direction.

8. The touch panel of claim 1 , further comprising
a dummy pattern disposed between the plurality of second conductive patterns.

9. The touch panel of claim 1 ,
wherein at least some of the plurality of first conductive patterns are in contact with each other.

10. The touch panel of claim 1 , wherein
each of the plurality of connection wires includes a first connection wire extending in a first direction and a second connection wire extending in a second direction crossing the first direction, and
at least some of the plurality of second conductive patterns included in the first connection wire are in contact with each other.

11. The touch panel of claim 1 , wherein
each of the plurality of connection wires includes a first connection wire extending in a first direction and a second connection wire extending in a second direction crossing the first direction, and
at least some of the plurality of second conductive patterns included in the second connection wire are spaced apart from each other.

12. The touch panel of claim 1 , wherein
the plurality of first conductive patterns includes an additional pattern overlapping a light emitting area.

13. The touch panel of claim 1 , wherein
the plurality of second conductive patterns includes a dummy pattern overlapping a light emitting area in a trace area.

14. The touch panel of claim 1 ,
wherein sizes of each of the plurality of touch electrodes are the same.

15. The touch panel of claim 1 , wherein the plurality of touch electrodes and the plurality of connection wires are formed on the same layer.

16. The touch panel of claim 1 , wherein
the plurality of touch electrodes and the plurality of connection wires are formed on different layers.

17. The touch panel of claim 1 ,
wherein each of the plurality of connection wires is adjacent to the touch panel driver in a second direction, and
sizes of each of the plurality of touch electrodes decrease in a direction opposite to the second direction.

18. A display device comprising:
a display panel;
a touch panel provided on one surface of the display panel;
a display panel driver that drives the display panel; and
a touch panel driver that drives the touch panel,
wherein the touch panel includes:
a base substrate;
a plurality of touch electrodes disposed on the base substrate; and
a plurality of connection wires disposed on the base substrate, each of the plurality of connection wires connecting each of the plurality of touch electrodes to the touch panel driver,
wherein each of the plurality of touch electrodes includes a plurality of first conductive patterns, and each of the plurality of connection wires includes a plurality of second conductive patterns, and
wherein a width of one of the plurality of first conductive patterns included in each of the plurality of touch electrodes is different from a width of one of the plurality of second conductive patterns included in each of the plurality of connection wires.

19. The display device of claim 18 , wherein
the width of one of the plurality of first conductive patterns is wider than the width of one of the plurality of second conductive patterns.

20. The display device of claim 18 , wherein
the touch panel further includes:
a light blocking member disposed on each of the plurality of touch electrodes; and
a color filter disposed at a position corresponding to an opening defined by the light blocking member, and
a width of the light blocking member is greater than at least one of the width of the plurality of first conductive patterns and the width of the plurality of second conductive patterns.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Ki Cheol
• Choi Won Jun

Classifications

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · 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

• H10K59/40

  OLEDs integrated with touch screens · CPC title