Avago Technologies International Sales Pte. Limited

Avago Technologies General IP (singapore) Pte. Ltd.

Deog Soon Choi

Ah Ron Lee

Young Ho Lee

Boon Keat Tan

Jin Ho Choi

Nitesh Kumbhat

Chris Chung

Jin Jeong

Hyun Mo Ku

Hyun-Mo Ku

Wei-Shun Wang

Li Sun

Sarah Kay Haney

Ashish Alawani

Lea-Teng Lee

Yong-Ik Choi

A system module package is disclosed. The system module package includes: a substrate; a first electrical component and a second electrical component disposed on a top surface of the substrate; and a plurality of bond wires disposed adjacent to at least a first side of the first electrical component and in between the first and second electrical components. The plurality of bond wires are configured to attenuate EMI of a frequency of interest traveling from the first electrical component toward the second electrical component, or from the second electrical component toward the first electrical component. Each of the plurality of bond wires has at least a first end that is mechanically coupled to the top surface of the substrate and has a highest point that is a height, H, from the top surface of the substrate. The plurality of bond wires is of substantially equal lengths measured from the top surface of the substrate to the highest points of the plurality of bond wires in a direction substantially normal to the top surface of the substrate.

Systems and methods for providing electromagnetic interference (EMI) compartment shielding for components disposed inside of system electronic packages

A method is provided for forming an internal electromagnetic interference (EMI) shield in a mold cap formed over a printed circuit board (PCB). The method includes forming a trench in the mold cap, the trench extending continuously from a first edge of the mold cap to a second edge of the mold cap, where the trench defines a trench pattern corresponding to desired locations of the internal EMI shield. The method further includes sealing an elastomeric pad on a top surface of the mold cap to form a channel, the channel including at least the trench formed in the mold cap; and filling the channel with a conductive epoxy using a vacuum configured to draw the conductive epoxy from a dispenser, connected to the first edge of the mold cap, through the channel to the second edge of the mold cap based on pressure differential.

Method of providing compartment EMI shields on printed circuit board using a vacuum

A compartment EMI shield is provided that is suitable for use in system module packages having thin form factors and/or smaller widths and/or lengths. The compartment EMI shield comprises a fence arranged along a compartment boundary at least in between first and second sets of electrical components of the system module package. The fence being configured to attenuate EMI of a frequency of interest traveling in at least one of a first direction and a second direction, where the first direction is from the first set of electrical components toward the second set of electrical components and the second direction is from the second set of electrical components toward the first set of electrical components.

A compartment EMI shield is provided that is suitable for use in system module packages having thin form factors and/or smaller widths and/or lengths. The compartment EMI shield comprises a fence arranged along a compartment boundary at least in between first and second sets of electrical components of the system module package and a substantially horizontal conductive structure that is coupled to the conductive fence. The fence being configured to attenuate EMI of a frequency of interest traveling in at least one of a first direction and a second direction, where the first direction is from the first set of electrical components toward the second set of electrical components and the second direction is from the second set of electrical components toward the first set of electrical components.

A module includes a circuit package and a top external shield layer. The circuit package includes multiple electronic components on a substrate; at least one side shield structure located at a corresponding at least one side edge region of the circuit package and electrically connected to ground, the at least one side shield structure being positioned on the substrate or on a pad on the substrate; and a molded compound disposed over the substrate, the electronic components, and the at least one side shield structure. The top external shield layer is disposed on a top outer surface of the circuit package and is electrically connected to ground. The at least one side shield structure and the top external shield layer provide an external shield of the module configured to protect the circuit package from external electromagnetic radiation and environmental stress.

Module with embedded side shield structures and method of fabricating the same

A module includes a circuit package having multiple electronic components on a substrate, a molded compound disposed over the substrate and the electronic components, and an external shield disposed on at least one outer surface of the circuit package. The external shield is segmented into multiple external shield partitions that are grounded, respectively. Adjacent external shield partitions of the multiple external shield partitions are separated by a corresponding gap located between adjacent electronic components of the multiple electronic components. The external shield is configured to protect the circuit package from external electromagnetic radiation and environmental stress. Each corresponding gap separating the adjacent external shield partitions is configured to provide internal shielding of at least one of the electronic components, between which the corresponding gap is located, from internal electromagnetic radiation generated by the other of the adjacent electronic components.

Circuit package with segmented external shield to provide internal shielding between electronic components

A semiconductor package and methods for producing the same are described. One example of the semiconductor package is described to include a substrate having a first face and an opposing second face. The package is further described to include a plurality of solderable surfaces formed on the first face of the substrate, a first solderable surface in the plurality of solderable surfaces having a pattern plating structure on an outward facing surface of the first solderable surface. There may also be an amount of solder bonded to the outward facing surface of the first solderable surface, where the pattern plating structure on the outward facing surface of the first solderable surface causes the amount of solder to have a first thickness at its ends, a second thickness at its center, and a discrete transition between the first thickness and the second thickness.

Bumped land grid array

A module includes a printed circuit board (PCB) having a substrate, component pads on a top surface of the substrate, and contact pads formed on a bottom surface of the substrate. The module further includes a mold compound disposed over the PCB; an external shield disposed over a top surface of the mold compound and on side surfaces of the mold compound and the PCB, where the external shield is configured to provide shielding of at least one component connected to at least one component pad from electromagnetic radiation; and a back-spill barrier formed on the bottom of the substrate. The back-spill barrier surrounds the contact pads, and is configured to prevent the external shield from making contact with the contact pads.

Module with external shield and back-spill barrier for protecting contact pads

A semiconductor package and methods for producing the same are described. One example of the semiconductor package is described to include a substrate having a first face and an opposing second face. The package is further described to include a plurality of pads disposed on the first face of the substrate, each of the plurality of pads including a first face and an opposing second face that is in contact with the first face of the substrate. The semiconductor package is further described to include a plurality of solder-on-pad structures provided on a first of the plurality of pads.

Semiconductor package having a solder-on-pad structure

A PCB includes a copper seed layer, a dielectric layer provided on the copper seed layer, a first thermal via and a plurality of second thermal vias disposed around the first thermal via. The first thermal via has a first through-hole in the dielectric layer and a first copper portion filled in the first through-hole, and each of the second thermal vias has a second through-hole in the dielectric layer and a second copper portion filled in the second through-hole. A mounting portion configured to mount a semiconductor device thereon is provided on the first copper portion.

Printed circuit board with thermal via

A bonding pad for use in attaching a semiconductor chip to a printed circuit board, includes: a copper layer; an organic layer disposed over the copper layer in a pattern such that part of the copper layer is exposed; and a gold layer disposed over the organic layer and in contact with the exposed part of the copper layer.

Growing community of inventors

Seoul, South Korea

Deog Soon Choi