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PGS(Pyrolytic Graphite Sheet) Graphite SheetPGS(PGS(PPyrolytic yrolytic GGraphite raphite SSheet) Graphite Sheetheet) Graphite Sheet
Panasonic Electronic Device Co.,Ltd
Panasonic Electronic Device Hokkaido Co.,Ltd
PGS Graphite SheetPGS Graphite Sheet
PGS Graphite SheetPGS Graphite SheetPGS Graphite Sheet
c ax
is
a-b plane
3.354~3.356 ×10-8 cm
Characteristics Thickness Density
a-b planec axis
Electrical conductivity Tensile strength
Thermal conductivity
Specifications0.10±0.05 mm
1 g / cm3
600 to 800 W / (m・K)
Approx. 15 W / (m・K)
10000 S / cm
19.6 MPa
0 100 200 300 400 500 600 700 800
Coefficient of thermal conductivity (W/m・K)
Ordinary Graphite
Aiuminium
Pure copper (hard)
PGS Graphite Sheet
Comparison of thermal conductivity (a-b plane)
PGS (Pyrolytic Highly Oriented Graphite Sheet) is made of graphite with a structure thatis close to a single crystal. This is achieved by highly-oriented polymer film sheet, a processwhich has never been implemented before.PGS is a heat sink sheet with high thermal conductivity and high flexibility.
PGS Graphite SheetPGS Graphite Sheet
22)Thermal)Thermal InterfaceInterface
The decrease in Thermal resistance and Thermal spread
11)Thermal)Thermal TransferTransfer
The conduction of thermal
Thermal spread
A B
A
BB
BB
A
B
Heat sink
Heat source(MPUs, PAs, graphics chips, etc.)
PGS Graphite sheet
PGS Graphite sheet
Heat source
PGS Graphite sheetHeat source
Package
Without PGS
Heat sink
Surface temperature of the package
PGS inserted
PGS Graphite sheetHeat sink
Package
Two functions of PGS Graphite SheetTwo functions of PGS Graphite SheetTwo functions of PGS Graphite Sheet
PGS Graphite SheetPGS Graphite Sheet
Thermal Transfer (1)Thermal Transfer (1)Thermal Transfer (1)
Heater 10×10mm V=8V (12W)
PGS Cu Al
size;18×180×0.1mm
PGSPGS CuCu AlAl
PGS Graphite SheetPGS Graphite Sheet
[ Heater ON ]
after 10 sec
PGS Cu Al
PGSPGS CuCu AlAl
Thermal Transfer (2)Thermal Transfer (2)Thermal Transfer (2)
Heater 10×10mm V=8V (12W)
size;18×180×0.1mm
PGS Graphite SheetPGS Graphite Sheet
[ Heater OFF ]
after 20 sec
[ measuring method ]
Heater P= 12W
Sample Size : 90×90×0.3mm
Heater Size :10×10mm
at 25℃
Aluminum Copper PGS Graphite Sheet
after 30 minutes
Thermal Transfer (3)Thermal Transfer (3)Thermal Transfer (3)
PGS Graphite SheetPGS Graphite Sheet
22)Thermal)Thermal InterfaceInterface
The decrease in Thermal resistance and Thermal spread
11)Thermal)Thermal TransferTransfer
The conduction of thermal
Thermal spread
A B
A
BB
BB
A
B
Heat sink
Heat source(MPUs, PAs, graphics chips, etc.)
PGS Graphite sheet
PGS Graphite sheet
Heat source
PGS Graphite sheetHeat sourcePackage
Without PGS
Heat sink
Surface temperature of the package
PGS inserted
PGS Graphite sheetHeat sink
Package
Two functions of PGS Graphite SheetTwo functions of PGS Graphite SheetTwo functions of PGS Graphite Sheet
PGS Graphite SheetPGS Graphite Sheet
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0
Pressure(kg/cm2)
Therm
al re
sist
ance (
℃・c
m2/W
)
Ordinary Graphite
Phase change
Silicon GreaseLow resistance PGS
PGS Graphite Sheet
Silicon sheet
Thermal InterfaceThermal InterfaceThermal Interface
PGS Graphite SheetPGS Graphite Sheet
Transistor
Heat Radiator
Screw (M3)
SampleThermocouple
Measurement of thermal resistance at high pressure
Measuring ; Transistor methodThe sample is placed between the transistor andthe heat radiator.And voltage loaded to transistor under pressure.Then voltage loaded to transistor, with addingpressure by driving the screw.
The thermal resistance (R) is calculated fromtemperature difference between transistor (temperature t1) and radiator (temperature t2 ). -Specimen size ;S= 3.00 cm2
-Transistor ; MTO-3P(Shin Dengen)
calculating equation ; R=( t1- t2 ) x S / W (c cm2/W) -Radiator ; 100 x 40 x 22 mm -Wattage ; 0.341 V x 20 A = 6.82 W -Measuring temperature ; thermocouples
PGS Graphite Sheet application developmentPGS Graphite Sheet application development
③ Acrylic adhesion attached type
100μm 200μm 300μm110μm
Standard sample
180×230 mm
115×180 mm
90×115 mm
Thickness
Structure
Features
Multilayered type
⑧ Silicon layeredDouble-sided type
Type PGS only
130μm
⑦ Silicon layered One-sided type
Silicon100μm
Acrylic double-sidedadhesive tape 30μm
Acrylicadhesive10μm
Silicon100μm
Part No. EYGS182310 EYGM121810SS EYGM121810SWEYGC091210CEYGA091210A
130μm
Separating paper
Conductiveadhesivetape30μm
⑥ Conductive adhesive tape attached type
EYGM091210CT
180℃400℃ 180℃80℃ 80℃Withstandtemperature
500~600 W/m・K
550~600 W/m・K
250~300 W/m・K
250~300 W/m・K
600~800 W/m・K
Thermalconductivity
80℃
500~600 W/m・K
• Usable up to 400°C
• Low thermal resistance
• Conductivity
• Insulation
• Strong adhesion
• Low thermal resistance
• Thin adhesive
• Conductivity
115×180 mm
90×115 mm
90×115 mm
110μm
Acrylic double-sidedadhesive tape 10μm
Separating paper
EYGA091210B
80℃
500~600 W/m・K
• Low thermal resistance
90×115 mm
Adhesive type
② Double-sided adhesive tape attached type
① Double-sided adhesive tape attached type
⑤ Polyimide tape attached type
130μm
90×115 mm
Polyimide tape 30μm
EYGA091210K
180℃
500~600 W/m・K
• High insulation
• High heat resistance
• High mechanical strength
④ Polyester tape attached type
130μm
90×115 mm
Polyester tape 30μm
PGS
EYGA091210P
80℃
500~600 W/m・K
• Insulation
• High mechanical strength
Insulation type
PGS PGS PGS PGSPGSPGSPGSPGS
• Cushioning properties
• One-side insulation
• Cushioning properties
• Both-side insulation
Separating paper
Separating paper
PGS Graphite SheetPGS Graphite Sheet
Application examplesApplication examples
PGS Graphite SheetPGS Graphite Sheet
DVD Drive (Reading&Writing)DVD Drive (Reading&Writing)
Each Graphite Sheet carries the heat generated in the laser unit to the metal chassis.
Optical Pick -UpOptical Pick -Up
PGSグラファイトシート (TYPE : EYGA *** )PGS Graphite Sheet
3×8 mm
5×20 mm
1. Optical Pick-Up for DVD1. 1. Optical Pick-Up for DVDOptical Pick-Up for DVD
Metal Chassis
Attaching PGS Graphite Sheet
Laser Unit(contains Laser Diodeand Control IC)
Heat Release from LaserHeat Release from LaserDiode and Control ICDiode and Control IC
Attaching PGS Graphite Sheet
PGS Graphite SheetPGS Graphite Sheet
【Cross Section 】
2. Mobile Phone2. 2. Mobile PhoneMobile Phone
CASE
PA(HeatSource)Circuit BoardCase
Graphite Sheet
The heat spot of the case can go down by Graphite sheet attached to the backside of the case.
The heat spot cool 8 or 9 C.
Isolator (Heat Source)
[ Non- graphite Sheet ] Small Size and
Light Weight Type
PGS Graphite Sheet
[ Non- graphite Sheet ] [ Graphite Sheet Attached ]
The Temp. on the outsidesurface of the case
Rise of 9.23deg
<Surface Temperature> :under the normal working (while calling)
Rise of 18.81deg
PGS Graphite SheetPGS Graphite Sheet
Substrate
PlasmaTarget
Backing plate
Cooling platePGS Graphite Sheet
3. Semiconductor manufacturing equipment3. Semiconductor manufacturing equipment
Sputtering
[ Target temperature rise ]
PGS inserted
Without PGS
after 2.5hours after 5.0hours90 degrees Celsius or higher 65 to 70 degrees Celsius
PGS Graphite SheetPGS Graphite Sheet
PGS can efficiently cool sputtering targets. It can be easily replaced and reused.
90 degrees Celsius or higher 70 to 75 degrees Celsius