Sensor device and image display device including the same

Patent metadata

Field	Value
Publication number	US-2025125518-A1
Application number	US-202418911407-A
Country	US
Kind code	A1
Filing date	Oct 10, 2024
Priority date	Oct 12, 2023
Publication date	Apr 17, 2025
Grant date	—

Abstract

A sensor device includes sensing electrodes, traces connected to the sensing electrodes, an antenna unit including a radiator and a signal pad, and a circuit board including a core layer, a first signal wiring disposed on one surface of the core layer and bonded to the signal pad, a second signal wiring disposed on the other surface of the core layer, and a via structure which penetrates the core layer to electrically connect the first signal wiring and the second signal wiring. The via structure is disposed between the signal pad and the traces in a planar direction. The signal wiring of the circuit board and the traces may be sufficiently spaced apart from each other to suppress signal interference therebetween.

First claim

What is claimed is:

1 . A sensor device comprising:
sensing electrodes; traces connected to the sensing electrodes; an antenna unit comprising a radiator and a signal pad; and a circuit board comprising a core layer, a first signal wiring disposed on one surface of the core layer and bonded to the signal pad, a second signal wiring disposed on the other surface of the core layer, and a via structure penetrating the core layer to electrically connect the first signal wiring and the second signal wiring, the via structure disposed between the signal pad and the traces in a planar direction.

2 . The sensor device according to claim 1 , wherein the sensing electrodes comprise first sensing electrodes arranged in a column direction, and second sensing electrodes arranged in a row direction.

3 . The sensor device according to claim 2 , wherein the sensing electrodes comprise a plurality of first sensing electrode columns each comprising first sensing electrodes, and
the traces comprise column traces connected to each of the plurality of first sensing electrode columns.

4 . The sensor device according to claim 3 , wherein the plurality of first sensing electrode columns comprise:
an antenna-sensing electrode column comprising a recess of a shape into which the radiator is inserted; and a base sensing electrode column except for the antenna-sensing electrode column.

5 . The sensor device according to claim 4 , wherein the recess is formed at one end of the antenna-sensing electrode column, and the column traces extend from the other end of the antenna-sensing electrode column.

6 . The sensor device according to claim 5 , wherein the column traces comprise a first column trace extending from the other end of the antenna-sensing electrode column, and a second column trace extending from one end of the base sensing electrode column, and
the other end of the antenna-sensing electrode column faces the one end of the base sensing electrode column in the column direction.

7 . The sensor device according to claim 2 , wherein the sensing electrodes comprise a plurality of second sensing electrode rows each comprising second sensing electrodes, and
the traces comprise row traces connected to each of the plurality of second sensing electrode rows.

8 . The sensor device according to claim 7 , wherein the row traces comprise a first row trace extending from one end of the second sensing electrode row, and a second row trace extending from the other end of the second sensing electrode row.

9 . The sensor device according to claim 1 , wherein the sensing electrodes and the antenna unit are disposed in the same layer.

10 . The sensor device according to claim 1 , wherein the antenna unit and the traces are disposed in the same layer.

11 . The sensor device according to claim 1 , wherein the antenna unit further comprises a transmission line connecting the radiator and the signal pad.

12 . The sensor device according to claim 1 , wherein the second signal wiring and the traces are spaced apart from each other in a thickness direction with the core layer interposed therebetween.

13 . The sensor device according to claim 1 , further comprising touch sensor pads connected to one end of each of the traces, and
the other end of each of the traces is connected to the sensing electrodes.

14 . An image display device comprising:
a display panel; and the sensor device according to claim 1 arranged in the display panel.

Assignees

• Dongwoo Fine Chem Co Ltd

Inventors

• Kwon Do Hyoung
• Choi Byung Jin
• Huh Yoon Ho

Classifications

• H01Q21/08

  the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)} · CPC title

• H01Q9/045

  with particular feeding means (for circular polarisation H01Q9/0428) · CPC title

• H01Q1/44

  using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence) · CPC title

• H01Q1/243

  with built-in antennas · CPC title

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title