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Application FCCL (Flexible Copper Clad Laminate) FCCL, is a key material for constructing FPCB(Flexible Printed Circuit Boards), consisting of laminated layers of copper and insulating film, which is essential for smartphone substrates that require flexibility to accommodate component placing and bending.
As a critical component of FPCB, FCCL plays a vital role in managing heat dissipation, signal interference, and speed within smartphones, depending on its material and performance properties. LEM is recognized for its technical expertise by supplying high-performance FCCL to global smartphone manufacturers.
FCCL, is a key material for constructing FPCB(Flexible Printed Circuit Boards), consisting of laminated layers of copper and insulating film, which is essential for smartphone substrates that require flexibility to accommodate component placing and bending.
As a critical component of FPCB, FCCL plays a vital role in managing heat dissipation, signal interference, and speed within smartphones, depending on its material and performance properties. LEM is recognized for its technical expertise by supplying high-performance FCCL to global smartphone manufacturers.

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Characteristics Heat resistance Flexibility Circuit design freedom High integration
Single-sided 2-layer FCCL Elecfoil Insulation film Average Good Average Average
Double-sided 2-layer FCCL Elecfoil Insulation film Elecfoil Good Average Good Good
LOTTE ENERGY MATERIALS Products
Characteristics Heat resistance Flexibility Circuit design freedom High integration
Single-sided
2-layer FCCL
Elecfoil Insulation film
Average Good Average Average
Double-sided
2-layer FCCL
Elecfoil Insulation film Elecfoil
Good Average Good Good
LOTTE ENERGY MATERIALS Products

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Characteristics
Uniform thickness stability Excellent heat resistance Excellent flexibility Establishment of a stable supply chain Realization of low dielectric performance
Cross section Product : IMIR-FB-4201242
Characteristics Unit EA-121212 EB-351235 IMIR-FB-4201242 EB-182018-R EB-701270
Mechanical properties Thickness 36 ± 10% 82 ± 10% 96 ± 10% 56 ± 10% 152 ± 10%
90˚ Adhesive strength gf/㎝ ≥ 1,000 ≥ 1,000 ≥ 1,000 ≥ 1,000 ≥ 1,000
Flexibility Cycle ≥ 250 ≥ 250 ≥ 250 ≥ 250 ≥ 250
Dimensional
stability
% -0.1 ~ +0.1 -0.1 ~ +0.1 -0.1 ~ +0.1 -0.1 ~ +0.1 -0.1 ~ +0.1
Thermal stability Resistance to molten solder 30sec/288℃ pass pass pass pass pass
Chemical stability Moisture
absorption rate
% 3 3 3 3 3
Flammability rating UL-94
standard
VTM-0 VTM-0 VTM-0 VTM-0 VTM-0
Application model Refrigerator
Smartphone
Smartphone fold
Smartphone flip
Smartphone
Smartphone fold
Smartphone Smartwatch
Application field Home appliance
wireless charging
wireless charging wireless charging PCM wireless charging
Characteristics Unit EA-121212 EB-351235 IMIR-FB-4201242 EB-182018-R EB-701270
Mechanical
properties
Thickness 36 ± 10% 82 ± 10% 96 ± 10% 56 ± 10% 152 ± 10%
90˚ Adhesive
strength
gf/㎝ ≥ 1,000 ≥ 1,000 ≥ 1,000 ≥ 1,000 ≥ 1,000
Flexibility Cycle ≥ 250 ≥ 250 ≥ 250 ≥ 250 ≥ 250
Dimensional
stability
% -0.1 ~ +0.1 -0.1 ~ +0.1 -0.1 ~ +0.1 -0.1 ~ +0.1 -0.1 ~ +0.1
Thermal
stability
Resistance to
molten solder
30sec/
288℃
pass pass pass pass pass
Chemical
stability
Moisture
absorption rate
% 3 3 3 3 3
Flammability rating UL-94
standard
VTM-0 VTM-0 VTM-0 VTM-0 VTM-0
Application model Refrigerator
Smartphone
Smartphone fold
Smartphone flip
Smartphone
Smartphone fold
Smartphone Smartwatch
Application field Home appliance
wireless charging
wireless charging wireless charging PCM wireless charging

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FCCL application areas & process diagram (smartphone)
FCCL(Materials)
FPCB(Board)
Circuit processing
Parts
Assembly
FCCL(Materials)
FPCB(Board)
Circuit processing
Parts
Assembly