The product is a package substrate that is used for the core semiconductors of mobile devices and PCs. It transmits electric signals between semiconductors and the main board, and protects expensive semiconductors from external stress. Compared with general substrates, as this substrate is a high-density circuit substrate containing more microcircuits, the assembly defects and incurred costs in directly bonding expensive semiconductors to the substrate can be reduced.

FCCSP(Flip Chip Chip Scale Package)
This is called Flip Chip Chip Scale Package (FCCSP) as semiconductor chips are upturned and connected to a board through a bump rather than wire bonding. It is mainly used for the application processor (AP) chips of mobile IT devices. Also Compared to WBCSP using Gold Wire, the process using Flip Chip can be applied to high-density semiconductors because the route of electrical signals is shorter, and larger input and output can be accommodated.

ApplicationMobile Application Processor, Baseband and OthersSemiconductor Chip -> Bumping(Solder) -> Flip -> Packaging(PCB)
Key Core Technologies
1. Bumping Structure
Bumping Structure image
2. μBall Bump Method
μBall Bump Method image
· Available for Fine Bump Pitch · Good for Small Bump Risk · Good Quality for Bump Characteristics
Substrate Type
1. EPS(Embedded Passive Substrate) & EDS(Embedded Die Substrate)
EPS/EDS is a substrate that can be mass-produced by embedding semiconductor passive elements and the IC, among other components, inside the board.
Decoupling capacitors are typically used to stabilize power supply voltage levels.
By embedding the IC inside the board, package size and thickness can be reduced.

2. ETS(Embedded Trace Substrate)
ETS is a circuit board whose circuit pattern is in the insulating material. ETS has a coreless structure, which allows for the implementation of microcircuits without the need for additional cost. Layer Down is performed much easier (4L → 3L). Also As the etching process is not affected by the pattern width, the circuit width can be precisely controlled.

[2Layer Buried Trace], [3Layer Buried Trace], [4Layer Buried Trace]
Lineup by SpecificationMass Production Sample Available
Routing Density    Build-Up Line Width / Space    8 / 10um    7 / 9um
BVH / Pad Registration    50 / 80um    45 / 75um
SRO Diameter SR Registration    55 ± 8um    50 ± 8um
FC Bump Pitch (Peripheral)    35um    30um
FC Bump Pitch (Area)    125um    125um
Low Z-Height    Core / PPG Thickness    40 / 18um    35 / 15um
SR Thickness    8 ± 3um    7 ± 2um
WBCSP(Wire Bonding Chip Scale Package)
This is a semiconductor chip the size of which is more than 80% of that of the finished part. It is called WBCSP (Wire Bonding CSP) because a gold wire bonding method is applied to connect the semiconductor chip and the PCB. A gold wire is used to connect the chip and PCB, and multi-packaging is possible, which makes the product mainly applicable for memory chips. In particular, UTCSP (Ultra Thin CSP) products are made with a thickness of 0.13mm or thinner. With a high degree of freedom in the chip to PCB connection, multi-chip packaging is made possible, and better performance is realized compared with other products of the same thickness.

ApplicationMobile Equipment Memory
Lineup by Specification
General WBCSP Road Map of HVM / Sample ProductMass Production Sample Available
Routing Density    Bond Finger Pitch    65P (37 / 15, Ni 2)    60P (32 / 15, Ni 2)
Line Width / Space    50 Pitch    40 Pitch
SRO Diameter Tolerance    ± 15um    ± 10um
Ball SR Registration
(After Compensation)    ± 17.5um    ± 16um
Low Z-Height    Core/PPG
Thickness    2Layer    80um    80um
3Layer    80um    80um
4Layer    120um    120um
Lineup by StructureMass Production Sample Available
Core    Layer Count    Pattern    Structure
Cored    2Layer    Normal    
Cored    4Layer    Normal    
Coreless    3Layer    Normal    
Coreless    4Layer    Normal    
SiP(System in Package)
This product is developed by realizing complex functions into one system by mounting multiple ICs and passive components in a package. It is also used in products such as Power Amplifiers (PA) and has heat dissipation characteristics. The product series include Flip-Cip SiP and Coreless.

ApplicationPA(Power Amplifier), PAMID (Power Amplifier Module with Integrated Duplexer), FEMID(Front-End Module with Integrated Duplexer),
SAW Filter, BAW Filter, Various RF Parts like Diversity FEM and Switch
1. Miniaturization
Can realize small packages as multiple ICs and passive components are integrated into one module.

[SiP Composition Shape]
2. Thin Substrate
Can realize 0.2mm thin substrate (based on a 6-layer substrate) by securing the driving capability of ultrathin sheets.

[ 0.2T 6L RF-SiP ](200um), [ 0.27T 8L RF-SiP ](270um), [ 10L ~, 5G Antenna Module ]
Key Core Technologies
1. Coreless RF-SiP
Signal characteristics can be enhanced by controlling Electromagnetic Interference (EMI) and the parasitic inductance by lowering the insulation thickness through the application of the coreless method. This serves as the basis for materializing thin substrates.

Cored Substrate, Coreless Substrate *Thin substrate Can realize
2. ENEPIG Surface Treatment
The ENEPIG surface treatment technology has the following characteristics.

1) Thin Ni ENEPIG

- RF performance is possible based on the Ni thickness.

* ENIG : Electroless Nickel Immersion Gold
* ENEPIG : Electroless Nickel Electroless Palladium Immersion Gold
2) Selective ENEPIG

- Selective ENEPIG allows the treatment of different surface types
on the same board. (ENEPIG + OSP)

Selective ENEPIG
* OSP : Organic Solderability Preservative
Lineup by SpecificationMass Production Sample Available
Layer Structure    Cored    4L / 6L / 8L    4L / 6L / 8L
Coreless    5L / 7L    6L / 8L / 9L
Line Width / Space    25 / 25 um    20 / 30 um
Bump Pitch    150 um    130 um
Cu Thickness    15 um    15 um
Surface Finish    Direct Au, Thin ENEPIG Selective ENEPIG    Direct Au, Thin ENEPIG Selective ENEPIG
FCBGA(Flip Chip Ball Grid Array)
The product is a high-integration package substrate that is used to connect a high-integration semiconductor chip to a main board. It is a highly-integrated package board that improves electrical and thermal characteristics by connecting the semiconductor chip and package board with Flip Chip Bump. In addition, the high integration of the CPU board circuitry requires an increase in the number of board layers and fine matching between layers; at the same time, the ability to manufacture thin boards for slimming sets is required.

ApplicationPC, Server, TV, Set Top Box, Automotive, Game Console
* Increased board manufacturing difficulty from CPU 14nm: 8 layers, 14.5um LtP to CPU 10nm: 10 layers, 14um LtP
FCB is available in Standard Core, Thin Core type products.Mass Production Sample Available
Core Thickness (um)    Line Width/Space
Bump Pitch
(Mass Volume)     
4L    6L    8L    10L    12L    14L    16L
Standard Core    800    9 / 12 um
130 um                                   
Thin Core    250    13 / 14 um
130 um                                   

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