Antenna-inserted electrode structure and image display device including the same

Patent metadata

Field	Value
Publication number	US-12040535-B2
Application number	US-202217887585-A
Country	US
Kind code	B2
Filing date	Aug 15, 2022
Priority date	Feb 14, 2020
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

An antenna-inserted electrode structure according to an embodiment includes a substrate layer including a touch sensing area and a touch sensing-antenna area, sensing electrodes disposed on the touch sensing area and the touch sensing-antenna area of the substrate layer, and an antenna unit disposed on the touch sensing-antenna area of the substrate layer, the antenna unit including a radiator inclined to an arrangement direction of the sensing electrodes. An image display device including the antenna-inserted electrode structure from which a moire phenomenon is suppressed is provided.

First claim

What is claimed is:

1. An antenna-inserted electrode structure, comprising:
a substrate layer comprising a touch sensing area and a touch sensing-antenna area;
sensing electrodes disposed on the touch sensing area and the touch sensing-antenna area of the substrate layer, the sensing electrodes comprising first sensing electrodes arranged in a first direction parallel to a top surface of the substrate and second sensing electrodes arranged in a second direction parallel to the top surface of the substrate layer, wherein the second direction is perpendicular to the first direction; and
an antenna unit disposed on the touch sensing-antenna area of the substrate layer, the antenna unit comprising a radiator inclined with respect to an arrangement direction of the sensing electrodes,
wherein the sensing electrodes and the radiator include a mesh structure that includes first electrode lines and second electrode lines intersecting each other, and the mesh structure includes unit cells defined by the first electrode lines and the second electrode lines crossing each other,
wherein the antenna unit further comprises a transmission line formed from the mesh structure and integrally connected to the radiator, and a signal pad connected to an end portion of the transmission line.

2. The antenna-inserted electrode structure according to claim 1 , wherein each of the unit cells has a polygonal shape, and a diagonal line of each of the unit cells is inclined with respect to the first direction and the second direction.

3. The antenna-inserted electrode structure according to claim 1 , wherein a boundary of the radiator has a continuous linear shape extending along extension directions of the first electrode lines or the second electrode lines.

4. The antenna-inserted electrode structure according to claim 1 , wherein boundaries of the sensing electrodes include protrusions formed by cutting the first electrode lines or the second electrode lines.

5. The antenna-inserted electrode structure according to claim 1 , wherein the transmission line extends obliquely with respect to the first direction and the second direction.

6. The antenna-inserted electrode structure according to claim 1 , further comprising:
connecting portions integrally connecting the first sensing electrodes along the first direction; and
bridge electrodes electrically connecting the second sensing electrodes to each other along the second direction.

7. The antenna-inserted electrode structure according to claim 1 , wherein sensing electrodes arranged in the touch sensing area have a shape different from that of sensing electrodes adjacent to the radiator in the touch sensing-antenna area.

8. The antenna-inserted electrode structure according to claim 7 , wherein the sensing electrodes adjacent to the radiator have a shape in which the shape of the sensing electrodes arranged in the touch sensing area is cut or partially removed by the radiator.

9. The antenna-inserted electrode structure according to claim 1 , wherein the sensing electrodes and the antenna unit are located at the same layer or at the same level.

10. An image display device, comprising:
a display panel comprising a plurality of pixels; and
the antenna-inserted electrode structure according to claim 1 stacked on the display panel.

11. The image display device according to claim 10 , wherein the sensing electrodes and the radiator comprise a mesh structure that includes a plurality of unit cells therein,
wherein an arrangement direction of the plurality of unit cells is different from an arrangement direction of the plurality of pixels.

Assignees

• Dongwoo Fine Chem Co Ltd

Inventors

• Kim Byuong In
• Maeng Chang Jun
• Huh Yoon Ho

Classifications

• 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

• 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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/0448

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title