Inorganic Materials Development Lab.

SKC Magnetic Materials

Inorganic Materials Development Lab.

2

Overview SKC Magnetic Materials

Material

Magnetic Flux Focusing/Guide Noise Countermeasure

Wireless Charging

NFC Absorbing

(Suppression) Shielding Magnetic Induction Magnetic Resonance

Rx Tx Rx Tx Rx

Ferrite

Mn-Zn ferrite ● ● kHz

Ni-Zn ferrite ○ ○ ● ● ● MHz

Metal Ribbon

Amorphous ● ●

Nanocrystal ● ● ○ kHz

Metal-Resin Composite (SKC Product Name : PMS)

Sendust (Fe-Si-Al)

● ● ○ MHz

Fe-Si-Cr ● MHz

CIP (Carbonyl Iron)

GHz

■ Magnetic properties of soft magnetic materials

Inorganic Materials Development Lab.

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Flux Field Directional Material

For Wireless Charge

Inorganic Materials Development Lab.

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SKC Magnetic Materials : Mn-Zn Ferrite

■ Key Feature

: High permeability shielding for wireless charging transmitting coils(@ ~300 KHz)

■ Application Examples : Wireless Charging Tx

■ Specification

A11 type for S company 300 M production(@’2015)

A13 type

■ Permeability Graph

A28 type for S company 200 M production(@’2016)

Inorganic Materials Development Lab.

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SKC Magnetic Materials : Ni-Zn Ferrite

■ Key Feature

: High magnetic permeability and low magnetic loss (@13.56MHz)

■ Application Examples : NFC, NFC+MST, Wireless Charging Rx

■ Specification ■ Permeability Graph

NFC NFC+MST Wireless Charging + MST + NFC : Ferrite + Amorphous + Attractor

Inorganic Materials Development Lab.

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SKC Ni-Zn Ferrite Key Features

■ Manufacture Comparison : Ni-Zn(Mn-Zn) Ferrite

Conventional Manufacture Process

SKC NEW Process Press → Sintering Tape Casting → Sintering

Key Features

- Thickness 0.7mm↑ - Thickness 0.04 ~ 0.3mm - Thickness 0.15 ~ 3mm

- Block Type - Sheet Type - Sheet & BlockType

- High Density → High μ', Low μ"

↓

Application - Wireless Charging : Induction Tx - Wireless Charging : Induction Rx - Wireless Charging : Induction Rx / Tx

- NFC, RFID - Wireless Charging : Resonance Rx / Tx

▶ Permeability Comparison

: High Density Higher μ’(≒20)

@ Same Raw Material/Sintering Condition

Permeability μ’ 20↑

▶ Production Cost Comparison

: 3X Productivity Low Price

@ 0.2 ~ 0.3 mm thickness

Inorganic Materials Development Lab.

Attractor Amorphous

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SKC Magnetic Materials : Amorphous & Nanocrystal Ribbon

■ Key Features

: High saturation flux density. 3 times than ferrite : Magnetic properties can be changed widely by heat treatments. ■ Application Examples : Wireless Charging Rx / Shielding(@Low Frequency)

■ Permeability Graph for WPC ■ Permeability Graph for Shielding

Wireless Charging for Galaxy S6 : Hybrid Type - Ferrite + Amorphous + Attractor

Wireless Charging for Galaxy S7 & Note 7 : Nanocrystal

Inorganic Materials Development Lab.

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SKC Magnetic Materials : PMS(Polymeric Magnet Sheet)

■ PMS Structure

Resin

Magnetic Metal Powder

Any films upon customer’s request (ex. Adhesive/Release film)

■ Feature

• Full line up - Magnetic Powder: Sendust(Fe-Si-Al), Fe-Si-Cr, CIP(Carbonyl Iron)

• Superior flexibility, High permeability

• Excellent electromagnetic absorbability in broadband

• Any magneticc properties and thickness are available to meet customer needs

• Stable permeability within 3% changes in high-temperature and humidity environment.

(85℃, 85RH%, 72hrs)

• Option: Flame Retardant(UL-V0) / Anti Corrosoin

Wireless Charging for Pantech IM-100 (2016) : PMS

Inorganic Materials Development Lab.

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SKC Magnetic Materials : PMS for Magnetic Flux Focusing

■ Key Features

: Excellent electromagnetic absorbability in broadband

■ Application Examples : NFC, NFC+MST, Wireless Charging Rx

■ Specification ■ Permeability Graph

iPhone Case Accessory

• Wireless Charing Case accessory

• SKC PMS(Sendust)

• System Efficiency 72%

Inorganic Materials Development Lab.

Magnetic Properties of PMS

10

0

50

100

150

200

250

300

1.0E+05 1.0E+06 1.0E+07

Perm

eability

Frequency (Hz)

PMS-C80 μ'

PMS-C80 μ''

PMS-S160 μ'

PMS-S160 μ''

PMS-S210 μ'

PMS-S210 μ''

PMS-S250 μ'

PMS-S250 μ''

PMS-CIP10 μ'

PMS-CIP10 μ''

Noise Frequency

Magnetic Powder

Permeability Range

(@ 3MHz)

Product Code

Magnetic Permeability Magnetic Loss

3 MHz 6 MHz 13.56 MHz 50 MHz 3 MHz 6 MHz 13.56 MHz 50 MHz

MHz

Sendust (Fe-Si-Al)

20 ~ 260

SKPMS-S160 161 157 133 91 8.8 28.5 44.2 42.2

SKPMS-S260 258 233 188 124 24.2 63.4 75.1 71.0

Fe-Si-Cr 40 ~ 80 SKPMS-C80 79 80 84 61 2.1 2.2 5.0 32.0

GHz CIP

(Carbonyl Iron) 8 ~ 12 SKPMS-CIP10 11 10 10 11 1.9 1.6 1.1 0.2

Inorganic Materials Development Lab.

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Noise Suppressor Material

Inorganic Materials Development Lab.

Noise Absorbing Materials

12

PMS _ Noise Suppression Sheet

Absorber for anechoic room Radar Absorbing Paint

Back

Front

Noise Absorber

Cf. Noise Shielding Material

Inorganic Materials Development Lab.

0

50

100

150

200

250

300

1.0E+05 1.0E+06 1.0E+07

Perm

eability

Frequency (Hz)

SKPMS for EMI

13

μ'

μ"

Absorption Absorption

Wire Less Communication Specialized for MHz to GHz band Absorption Performance

Inorganic Materials Development Lab.

Noise Suppression Effect

14

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0

10 100 1000 10000

S11 (

dB)

Frequency (MHz)

S220 0.05T

S220 0.1T

S220 0.2T

S220 0.3T

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0

10 100 1000 10000

S11 (

dB)

Frequency (MHz)

C80 0.3T

S160 0.3T

S220 0.3T

S260 0.3THigh Permeability

Analyzer : Agilent Network analyzer 8753E

Analyzer Segment : Agilent Short SER51011

Analyzer Area : 10MHz ~ 6GHz

Abso

rber

Short

(to

tal re

flect

ion)

S11

Inorganic Materials Development Lab.

Hybrid SKPMS

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Release Layer

Double Adhesive Layer

Absorber Layer

Metal Layer

Incoming waves

Transmitted waves

Reflected waves

Heat conversion

Specification Absorber

Model S000 S000RP S000ER

Permeability & Thickness

by Customer Needs

Permeability ~ 250 ~ 200 ~ 150

85℃, 85%RH Test ○ ○ ○

Anticorrosive X ○ X

Heat resistance FPCB & SMT process condition

X x ○

Metal : Al, Cu, Ag Coated Cu etc.

Absorber : Fe-Si-Al, Fe-Si-Cr, Carbonyl Iron etc.

Inorganic Materials Development Lab.

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SKC Soft Magnet Sheets Road Map: PMS

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Perm

eability

R&D Road Map

Fe-Si-Cr

Fe-Si-Al

50

270

220

150

200

50

Chemical & heat resistance. (In FPCB & SMT process condition)

180

220

100

80

Stable permeability within 3% changes in high-temperature and humidity environment. (85℃, 85RH%, 72hrs)

Stable permeability within 3% changes and no corrosive spot in salt spray environment. (5% saline water, 35℃, 72hrs)

2016 2017 2015

Higher permeability Sheet Type Roll Type.

80

60

Cu

Magnet sheet

Adhesive

Poly imide film

Present schematic of FPCB using PMS

Cu

Schematic of FCCL using PMS

Magnet sheet

Cu

Magnet sheet

Schematic of FPCB without PI & Ad.

Inorganic Materials Development Lab.

M-FCCL Concept

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M-FCCL Concept

NFC/MST(Samsung Pay) Antenna with M-FCCL

Organic-Inorganic Hybrid Technology

• M-FCCL : PMS Filler + EMI film Resin Technology

• Same technology base on PMS, EMI用 shielding film, Digitizer用 shielding sheet

• Same production line

: Mixing Sheet casting Press/attach

AS-IS

M-FCCL Antenna

• Thin Thickness(~25%): without Bonding sheet & PI film

• Cost Down(~ 20 %) : Simple process

Magnet material (Ferrite or PMS)

Cu PET or PI Cu

DES process *FCCL

Bonding Sheet

Magnet material (PMS)

Cu PMS Cu

DES process Cu pattern