RF functionality and electromagnetic radiation shielding in a component carrier

Patent metadata

Field	Value
Publication number	US-11201119-B2
Application number	US-201816001831-A
Country	US
Kind code	B2
Filing date	Jun 6, 2018
Priority date	Jun 6, 2018
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

A component carrier including i) an electronic component embedded in the component carrier, ii) an antenna structure arranged at a region of a first main surface of the component carrier, iii) a shielding structure made of an electrically conductive material and configured for shielding electromagnetic radiation from propagating between the antenna structure and the electronic component. Hereby, the shielding structure is arranged at least partially between the antenna structure and the electronic component. Furthermore, the component carrier includes an electrically conductive structure to electrically connect the electronic component and the antenna structure through the shielding structure. The shielding structure is non-perforated at least in a plane between the antenna structure and the electronic component.

First claim

The invention claimed is:

1. A component carrier configured as one of the group consisting of a printed circuit board, a substrate-like printed circuit board, and a substrate, the component carrier, comprising:
an electronic component embedded in the component carrier, wherein the electronic component is fully encapsulated in an electrically insulating material,
wherein the electronic component is a high frequency, HF, component;
an antenna structure arranged at a region of a first main surface of the component carrier;
a shielding structure made of an electrically conductive material and configured for shielding electromagnetic radiation from propagating between the antenna structure and the electronic component,
wherein the shielding structure is arranged at least partially between the antenna structure and the electronic component;
a high frequency dielectric layer arranged between the antenna structure and the shielding structure; and
an electrically conductive structure to electrically connect the electronic component and the antenna structure through the shielding structure,
wherein the shielding structure is non-perforated at least in a plane between the antenna structure and the electronic component,
wherein the electronic component comprises at least one terminal at a main surface region facing away from the antenna structure, and
wherein the terminal is connected to a part of the electrically conductive structure which extends away from the terminal and the antenna structure.

2. The component carrier according to claim 1 ,
wherein a first part of the electrically conductive structure at least partially surrounds the electronic component laterally.

3. The component carrier according to claim 2 ,
wherein the shielding structure is non-perforated at least in a plane between the antenna structure, the electronic component, and the first part of the electrically conductive structure.

4. The component carrier according to claim 1 ,
wherein the shielding structure is formed as a layer and comprises a metal.

5. The component carrier according to claim 1 ,
wherein the electrically conductive structure comprises a redistribution layer arranged at a second main surface of the component carrier, the second main surface is opposed to the first main surface of the component carrier.

6. The component carrier according to claim 5 ,
wherein the second part of the electrically conductive structure is arranged between and electrically connects the terminal and the redistribution layer.

7. The component carrier according to claim 5 ,
wherein the first part of the electrically conductive structure is arranged between and electrically connects the redistribution layer and the shielding structure.

8. The component carrier according to claim 1 ,
wherein the electrically conductive structure comprises at least one of an interconnection via, a micro-via, and at least one electrically conductive layer.

9. The component carrier according to claim 2 , further comprising:
at least one further electrically conductive structure comprising a further first part of the electrically conductive structure which at least partially surrounds the electronic component such that the electrically conductive structure and the further electrically conductive structure form an electromagnetic radiation shielding zone around the electronic component,
wherein the shielding structure is non-perforated in a plane between the antenna structure, the electronic component, the first part of the electrically conductive structure and the further first part of the further electrically conductive structure.

10. The component carrier according to claim 1 ,
wherein the electrically conductive structure comprises an electrically conductive portion arranged at a region of the first main surface of the component carrier,
wherein the electrically conductive portion is electrically connected to the antenna structure.

11. The component carrier according to claim 1 ,
wherein the dissipation factor of the high frequency dielectric layer is not more than 0.0008 at 80 GHz.

12. The component carrier according to claim 1 ,
wherein the electronic component is embedded in an electrically insulating material with a matched coefficient of thermal expansion, CTE, in a range of 1 ppm to 10 ppm.

13. The component carrier according to claim 1 , further comprising:
a core structure,
wherein the core structure comprises a cavity, and
wherein the electronic component is arranged at least partially inside the cavity.

14. The component carrier according to claim 13 ,
wherein the horizontal layer build-up of the component carrier is symmetric with respect to the embedded electronic component in the cavity of the core structure.

15. The component carrier according to claim 1 ,
wherein the electrically conductive structure consists of copper.

16. The component carrier according to claim 1 , further comprising at least one of the following features:
the electronic component is selected from a group consisting of an electrically non-conductive and/or electrically conductive inlay, a heat transfer unit, a light guiding element, an energy harvesting unit, an active electronic component, a passive electronic component, an electronic chip, a storage device, a filter, an integrated circuit, a signal processing component, a power management component, an optoelectronic interface element, a voltage converter, a cryptographic component, a transmitter and/or receiver, an electromechanical transducer, an actuator, a microelectromechanical system, a microprocessor, a capacitor, a resistor, an inductance, an accumulator, a switch, a camera, a magnetic element, a further component carrier and a logic chip;
a cut-out portion is arranged below the antenna structure, and the cut-out portion forms a cavity which is at least partially filled with a gas;
the component carrier comprises a first component carrier part having a first cut-out portion, and the component carrier comprises a second component carrier part having a second cut-out portion,
the first cut-out portion and the second cut-out portion face opposite main surfaces of the antenna structure,
an electrically conductive material is provided on the surface of the first cut-out portion and on the surface of the second cut-out portion,
the first cut-out portion and the second cut-out portion respectively form a first cavity and a second cavity on opposite sides of the antenna structure, and
the first cavity and the second cavity are at least partially filled with gas;
at least one of the dielectric structures comprises at least one of the group consisting of reinforced or non-reinforced resin, epoxy resin or Bismaleimide-Triazine resin, FR-4, FR-5, cyanate ester, polyphenylene derivate, glass, prepreg material, polyimide, polyamide, liquid crystal polymer, epoxy-based Build-Up Film, polytetrafluoroethylene, a ceramic, and a metal oxide;
the electrically conductive structure is at least partially coated with and/or at least partially consists of a supra-conductive material.

17. An electronic device, comprising:
a module with a 4G and/or 5G functionality;
a component carrier, wherein the component carrier is configured as one of the group consisting of a printed circuit board, a substrate-like printed circuit board, and a substrate, with an electronic component embedded in the component carrier, wherein the electronic component is fully encapsulated in an electrically insulating material, wherein the electronic component is a high frequency, HF, component;

Assignees

• Austria Tech & System Tech
• At & S Austria Tech & Systemtechnik Ag

Inventors

• Leitgeb Markus
• Schrems Martin
• Schlaffer Erich
• Anderson Steve

Classifications

• H10W44/248

  for antennas · CPC title

• H10W70/60

  Insulating or insulated package substrates; Interposers; Redistribution layers (leadframes H10W70/40) · CPC title

• H10W20/42

  Vias, e.g. via plugs · CPC title

• H10W42/267

  Patterned shielding planes · CPC title

• H10W72/0198

  batch processes · CPC title