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Chip Scale Review May • June • 2016


controllers, and sensors. Often passive

components are included. SiP uses a mixed

assembly of technologies including SMT,

wire bond, flip chip and may feature the

using of embedding or redistribution layer

(RDL) in wafer or panel format.

Q: What advantages does your

company offer the SiP market?


: SiP requires high-precision

assembly technology that leverages

Amk o r ’s s t r e n g t h s i n d e s i g n—

e spec i a l l y f o r RF and mm-wave

designs where understanding the

impact of noise on the performance

is critical. A complete SiP solution

is offered with passive components

in the form of integrated passive

devices or embedded components to

provide a small form factor, embedded

and conformal shields, and antenna

design in an external, side-by-side, or

antenna on package/mold solution. We

offer conformal metal shielding and

emphasize its EMC design on copper-

supporting shielding technology with

good adhesion of the shield to EMI/

ground and minimum leakage through

the bottom layer of the substrate.

Amkor highlights its time-to-market

enabling development cycles of less

than six months with rapid production

ramps of millions of units per week. Also

highlighted is cost reduction by the use

of bill-of-material optimization through

co-design and bill of materials (BOM)

purchasing management and scale, as

well as high-yielding assembly.


: To address ongoing trends

within the electronics market, such as

increasingly smaller devices packaged

with higher functionality, ASE is

building its SiP business upon a strong

foundation that leverages established

core strengths and large infrastructure of

IC assembly capabilities with factories

across the world. ASE is the only OSAT

with internal substrate manufacturing,

semiconductor assembly and test, as

well as EMS capabilities. We can offer

customers a complete solution, based on

our system-level design, manufacturing

expertise, and build-of-materials

logistics management supported by our

USI division.



h a s d e v e l o p e d c omp r e h e n s i v e

capabilities, including design, advanced

packaging technologies, high-density

SMT component placement, advanced

molding for complex topographies,

conformal shielding, and system-

level test, for a wide variety of SiP and

modules in multiple market segments.

Various SiP configurations have been

deployed ranging from conventional 2D

modules with multiple active and passive

components, interconnected through flip

chip, wire bonding, and SMT, to more

complex modules such as package-in-

package (PiP), package-on-package (PoP),

2.5D and 3D integrated solutions.

An experienced R&D and engineering

team supports customers faced with

complex SiP integration requirements.

SMT design rules are being advanced

t h r ough r e f i n eme n t s i n p r o c e s s

technologies to enable tighter component-

to-component placement and new material

and molding technologies to enable lower

mold cap profiles and smaller dimensions.

We work with advanced substrate

materials with fine line and space (L/S),

reduced dielectric thickness, and coreless

design to address the reduced form

factor requirements of next-generation

applications, while enabling lower cost.


: SPIL has developed an antenna-

in-package design using an inverted-F

antenna in the molding compound to

provide size reduction, greater antenna

efficiency, the ability to support high-

density components in the package, and

easier customer layout designs. We also

offer a package with a printed antenna in

the substrate or an antenna-on-package

design using a thin sputtered coating layer.


: U TA C h a s r e c e n t l y

teamed with AT&S to offer a 3D SiP

collaboration that allows the co-design of

substrate and assembly in an embedded

chip configuration. Components can be

mounted on top of the package with SMT

or flip chip, enabling a 3D structure.

Common themes

While there are different views of

SiP, there are some common themes.

TechSearch International has developed

the following definition of SiP:

• SiP is a functional system or

s ub s y s t em a s s emb l e d i n t o a

standard footprint package such as

an LGA, BGA, quad flat no lead

(QFN), or FOWLP.

• It contains two or more dissimilar

die, typically combined with other

components such as passives,

filters, MEMS, sensors, and/or


• The components are mounted

together on a substrate to create

a customized, highly integrated

product for a given application.

Regardless of the definition used, SiP

is driven by the need for miniaturization

and is only adopted when form factor and

performance requirements are met.

A common theme that runs through

the OSATs is the importance of design

in the SiP process. Die and package

traditionally have been treated as

two separate designs. The package

engineering is considered a backend

effort. With SiP, co-design is essential

for success, which becomes especially

impo r t an t i n t he examp l e o f RF

products where antenna design and

EMI shielding are required. In many

cases, reducing the cost of SiP depends

on reducing the BOM, which can be

accomplished with careful design.

Success in SiP will require a business

model that combines the strengths of

the electronics manufacturing services

(EMS) providers with those of the

semiconductor assembly and test

providers. For this reason, additional

partnerships are expected to emerge.

As noted by STATS ChipPAC, existing

package technologies and processes are

used to enable various SiP solutions.

The challenge is the integration of these

processes, and the incorporation of

new process technologies such as EMI

shielding, and yield management.

About TechSearch International,

I nc . : The company – f ounded i n

1987 – is a market research leader

specializing in technology trends

i n m i c ro e l e c t ro n i c s p a c k a g i n g

and assembly.