Semiconductor Package Power Ball Matrix With Insulated Bonding Regions
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Solution Overview
Problem
As semiconductor devices become more integrated and operate at higher frequencies, they face issues with crosstalk and interference due to increased device density, leading to reduced reliability and signal integrity.
Innovation Solution
A semiconductor package configuration with multiple conductive layers separated by dielectric layers, featuring distinct bonding regions for different voltage levels, including a ground reference level, to enhance isolation and capacitance between power planes, thereby mitigating crosstalk and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If device density is increased to achieve higher integration, then productivity and device capability are improved, but crosstalk and interference between neighboring bonding interfaces and layers increase, worsening signal integrity and reliability
Solution Approach 1:
The bonding region is segmented into multiple electrically insulated bonding regions (first, second, and third bonding regions) that are spatially separated and assigned different voltage levels. This segmentation isolates high-voltage and low-voltage signals, preventing crosstalk while maintaining high device integration density.
Solution Approach 2:
Different regions of the substrate are assigned different electrical characteristics - specifically, different voltage levels (first voltage, second voltage, and third voltage) are applied to different bonding regions. This local differentiation of electrical properties allows high-density integration while maintaining signal integrity through localized voltage control.
2Adaptability or versatility
If multiple voltage levels are routed through the substrate, then device functionality is improved, but crosstalk between voltage signals increases, worsening signal isolation
Solution Approach 1:
The substrate is divided into multiple electrically insulated bonding regions, each capable of carrying different voltage levels simultaneously. The first bonding region carries a first voltage, the second bonding region carries a second voltage, and the third bonding region carries a third voltage, with all regions being electrically insulated from each other to prevent crosstalk.
Solution Approach 2:
Electrically insulated bonding regions act as intermediaries that allow multiple voltage signals to coexist on the same substrate without direct electrical interaction. The insulation between bonding regions serves as a mediator that blocks harmful electromagnetic coupling while enabling versatile voltage level support.
3Productivity
If bonding regions are placed closer together to increase pinout capacity, then productivity is improved, but interference between adjacent bonding regions increases, worsening device reliability
Solution Approach 1:
Adjacent bonding regions are segmented and electrically insulated from each other, allowing them to be placed in close proximity without causing interference. This segmentation enables increased pinout capacity while maintaining reliability by preventing electromagnetic coupling between neighboring bonding regions.
Solution Approach 2:
Each bonding region is assigned a specific electrical characteristic (different voltage levels) and is electrically insulated from adjacent regions. This local electrical differentiation allows dense packing of bonding regions while preventing interference through localized voltage control and electrical insulation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces crosstalk and interference during high-frequency operations, enhancing signal integrity and device reliability by optimizing the semiconductor package configuration with specific voltage-level separation and capacitance enhancement.
Implementation Method 1
multiple conductive layers separated from each other by dielectric layers
Implementation Method 2
offering enhanced capacitance between power planes of the substrate
Data Source
AI summary
A semiconductor chip carrier having multiple conductive layers separated from each other by dielectric layers, a chip bonding position at an intermediate portion of a top surface of the semiconductor chip carrier, and a bonding region spaced apart from the chip bonding position. The bonding region includes a first bonding region closest to the chip bonding position, a second bonding region most distant from the chip bonding position, and a third bonding region positioned between the first bonding region and the second bonding region. The first bonding region, the second bonding region and the third bonding region are electrically insulated from each other and the first bonding region is configured to carry a first voltage, the second bonding region is configured to carry a second voltage and the third bonding region is configured to carry a third voltage that is less than the first voltage and less than the second voltage.