Circuit board arrangement comprising a circuit board provided with a graphene island and method of communicating between a first and a second circuit

Patent metadata

Field	Value
Publication number	US-12588141-B2
Application number	US-202018033444-A
Country	US
Kind code	B2
Filing date	Oct 26, 2020
Priority date	Oct 26, 2020
Publication date	Mar 24, 2026
Grant date	Mar 24, 2026

Abstract

A circuit board arrangement includes a circuit board having two conductive material structures and a separating layer, where the structures are placed on opposite sides of the layer and the layer comprises includes a first graphene island stretching between a first area of a first of the structures and a second area of a second of the structures, which first graphene island is controllable to electrically interconnect the two areas or separate the two areas from each other. A method of communicating between a first and a second circuit via the structures comprises includes controlling the first graphene island to electrically interconnect the first and the second area and the first circuit communicating with the second circuit after the interconnection.

First claim

The invention claimed is:

1 . A circuit board arrangement comprising a circuit board, the circuit board comprising at least two conductive material structures and a separating layer, where the two conductive material structures are placed on opposite sides of the separating layer, said separating layer comprising a first graphene island stretching between a first area of a first of the conductive material structures and a second area of a second of the conductive material structures, said first graphene island being controllable to electrically interconnect the two areas or separate the two areas from each other, wherein the first graphene island is a controllable via running through the separating layer.

2 . The circuit board arrangement according to claim 1 , further comprising a first switch configured to selectively connect the first graphene island to an electric potential in order to electrically interconnect the first area and the second area.

3 . The circuit board arrangement according to claim 2 , wherein the first switch is connected to the electric potential via a first impedance for regulating a degree of electrical interconnection between the first area and the second area.

4 . The circuit board arrangement according to claim 1 , further comprising a first circuit connected to the first area and a second circuit connected to the second area, the first circuit being configured to control the first graphene island to electrically interconnect the first area and the second area and to communicate with the second circuit after the electrical interconnection.

5 . The circuit board arrangement according to claim 4 , the first circuit being further configured to control the first graphene island to separate the first area from the second area after the communication.

6 . The circuit board arrangement according to claim 4 , wherein the communication comprises obtaining sensor measurements from the second circuit.

7 . The circuit board arrangement according to claim 4 , wherein the communication comprises sending data to the second circuit.

8 . The circuit board arrangement according to claim 1 , further comprising a second graphene island in the separating layer, the second graphene island stretching between a third area in the first conductive material structure and a fourth area in the second conductive material structure, the second graphene island being controllable to electrically interconnect the two areas or separate the two areas from each other.

9 . The circuit board arrangement according to claim 8 , further comprising a second switch configured to selectively connect the second graphene island to an electric potential in order to electrically interconnect the third area and the fourth area.

10 . The circuit board arrangement according to claim 8 , wherein the first circuit is connected to the third area and the second circuit is connected to the fourth area and configured to control the second graphene island to electrically interconnect the third area and the fourth area as well as to communicate with the first circuit after the electrical interconnection.

11 . A wireless communication device comprising the circuit board arrangement according to claim 1 .

12 . The circuit board arrangement according to claim 4 , wherein the communication comprises sending data to the second circuit.

13 . The circuit board arrangement according to claim 12 , further comprising a second graphene island in the separating layer, the second graphene island stretching between a third area in the first conductive material structure and a fourth area in the second conductive material structure, the second graphene island being controllable to electrically interconnect the two areas or separate the two areas from each other.

14 . The circuit board arrangement according to claim 13 , further comprising a second switch configured to selectively connect the second graphene island to an electric potential to electrically interconnect the third area and the fourth area.

Assignees

• Ericsson Telefon Ab L M
• Telefonaktiebolaget Ericsson Lm Publ

Inventors

• Eleftheriadis Lackis
• Pettersson Anders

Classifications

• H05K2201/10098

  Components for radio transmission, e.g. radio frequency identification [RFID] tag, printed or non-printed antennas · CPC title

• H05K2201/0323

  Carbon · CPC title

• H05K1/0298

  Multilayer circuits · CPC title

• H05K2201/10196

  Variable component, e.g. variable resistor · CPC title

• H05K1/0234

  Resistors or by disposing resistive or lossy substances in or near power planes (H05K1/0246 takes precedence) · CPC title