Multifunctional hybrid module and portable device comprising same

• US 10,420,259 B2
• Filed: 10/05/2016
• Issued: 09/17/2019
• Est. Priority Date: 10/05/2015
• Status: Active Grant

• Current Assignee: Amosense Co., Ltd.
• Original Assignee: Amosense Co., Ltd.
• Inventors: Jang, Kil Jae
• Primary Examiner(s): Ngo, Hung V
• Application Number:
  US15/765,570
• Publication Number:
  US 20190082564A1
• Time in Patent Office: 1,077 Days
• CPC Class Codes: H01Q 1/2208 associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems methods or arrangements for sensing record carriers, e.g. for reading patterns G06K7/00; record carrier for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• CPC Class Codes: H01Q 17/002 using short elongated elements as dissipative material, e.g. metallic threads or flake-like particles
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 3/44 varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
• CPC Class Codes: H01Q 5/307 Individual or coupled radiating elements, each element being fed in an unspecified way
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04B 5/43 Antennas
• CPC Class Codes: H04B 5/70 specially adapted for specific purposes
• CPC Class Codes: H05K 9/0075 Magnetic shielding materials
• CPC Class Codes: H05K 9/0083 comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers H05K9/0086 takes precedence

Abstract

A multifunctional integrated module is provided. The multifunctional integrated module includes an antenna unit including heterogeneous antennas and a magnetic field shielding unit, disposed on one surface of the antenna unit, including a magnetic field shielding layer which includes shredded Fe-based alloy fragments and a dielectric filling at least a part of gaps between at least a part of some adjacent ones of the shredded Fe-based alloy fragments, to improve the characteristics of the antennas and condense a magnetic flux toward the antennas. According to this, although the functions are performed simultaneously, the respective functions are excellently expressed at the same time, and the durability can be ensured by preventing the deterioration of the function even with external physical shocks during use.

Claims

1. A multifunctional integrated module, comprising:

an antenna unit including heterogeneous antennas; and

a magnetic field shielding unit, disposed on one surface of the antenna unit, including a magnetic field shielding layer which includes shredded Fe-based alloy fragments and a dielectric filling at least a part of gaps between at least a part of some adjacent ones of the shredded Fe-based alloy fragments, configured to improve characteristics of the antennas and condense a magnetic flux toward the antennas;

wherein the heterogeneous antennas have different operating frequency bands from each other or perform different functions from each other,

wherein the heterogeneous antennas include at least two types of antennas among a near field communication (NFC) antenna, a magnetic security transmission (MST) antenna, and a wireless power transmission (WPT) antenna,

wherein a number of Fe-based alloy fragments of which diameters are less than 500 μ

m accounts for 40% or more of a total number of the Fe-based alloy fragments,

wherein a number of Fe-based alloy fragments of which diameters are less than 50 μ

m accounts for 50% or less of the total number of the Fe-based alloy fragments.

2. The multifunctional integrated module of claim 1, wherein the heterogeneous antennas include two or more types of antennas among a first antenna having an operating frequency band of 5 kHz to 350 kHz, a second antenna having an operating frequency band including 6.78 MHz, and a third antenna having an operating frequency band of including 13.56 MHz.

3. The multifunctional integrated module of claim 1, wherein the magnetic field shielding unit further includes a protective member disposed on one surface of the magnetic field shielding layer and an adhesive member disposed on the other surface of the magnetic field shielding layer and attached to a surface of the antenna unit.

4. The multifunctional integrated module of claim 3, wherein the protective member is adhered to a top surface of the magnetic field shielding layer through a first adhesive layer which forms a surface of the protective member, and the adhesive member is adhered to a bottom surface of the magnetic field shielding layer through a second adhesive layer which forms a surface of the adhesive member, and wherein the dielectric included in the magnetic field shielding layer is formed such that a part of at least one of the first adhesive layer and the second adhesive layer permeates into the gaps between the Fe-based amorphous alloy fragments.

5. The multifunctional integrated module of claim 1, wherein the Fe-based alloy is a 3-element-based alloy including iron (Fe), silicon (Si) and boron (B) or a 5-element-based alloy including iron (Fe), silicon (Si), boron (B), copper (Cu), and niobium (Nb).

6. The multifunctional integrated module of claim 1, wherein the magnetic field shielding unit includes a plurality of the magnetic field shielding layers, and the dielectric includes a dielectric layer interposed between adjacent magnetic field shielding layers to adhere the adjacent magnetic field shielding layers to each other and reduce eddy currents.

7. The multifunctional integrated module of claim 6, wherein the dielectric layer interposed between the adjacent magnetic field shielding layers is an insulating adhesive layer or a heat-conductive heat-radiating adhesive layer.

8. The multifunctional integrated module of claim 1, wherein a single layer of the magnetic field shielding layer has a thickness of 15 μ

m to 35 μ

m.

9. The multifunctional integrated module of claim 1, wherein a number of Fe-based alloy fragments of which diameters are less than 500 μ

m accounts for 80% or more of a total number of the Fe-based alloy fragments.

10. A portable device comprising the multifunction integrated module of claim 1 as a receiving module.

11. An electronic device comprising the multifunctional integrated module of claim 1.