Patterned Shield Structure for Compact High-Q Integrated Inductors
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Solution Overview
Problem
Existing integrated devices with inductors face performance limitations due to interference from nearby components, necessitating improved configurations to enhance the quality factor (Q) of inductors and reduce their size without compromising performance.
Innovation Solution
Incorporating a shield structure with a shield frame and repeating wave-shaped shield branches, which can be configured as a patterned ground shield, to be located near the inductor, improving the inductor's quality factor and allowing for smaller inductor designs while maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional inductor design is used without a shield structure, then the inductor occupies less area, but the quality factor is reduced due to interference from nearby components
Solution Approach 1:
A shield structure is introduced as an intermediary element between the inductor and nearby interfering components. The shield structure includes a shield frame and multiple shield branches with repeating wave shapes that extend toward the inductor, creating an electromagnetic barrier that blocks interference from adjacent components while allowing the inductor to maintain its compact design.
2Area of stationary object
If the inductor size is reduced, then the package size is reduced, but the performance is compromised due to increased sensitivity to nearby components
Solution Approach 1:
The shield structure serves as a protective intermediary that enables compact inductor design by blocking harmful electromagnetic interference from nearby components. The repeating wave-shaped shield branches are strategically positioned to create effective shielding while minimizing the overall package footprint.
Solution Approach 2:
The shield structure provides localized electromagnetic protection specifically around the inductor region. The shield branches are configured with repeating wave shapes that are optimized to block interference from specific directions and sources, allowing different regions of the package to have different shielding characteristics tailored to their specific needs.
3Reliability
If a shield structure is added to protect the inductor, then the quality factor is improved, but the device complexity increases
Solution Approach 1:
The shield structure is segmented into a shield frame and multiple shield branches with repeating wave shapes. This segmentation allows the shield to be configured in a modular manner, where the repeating patterns can be systematically arranged to provide effective shielding. The segmented design also facilitates integration with standard semiconductor fabrication processes.
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 shield structure enhances the inductor's quality factor, enabling the creation of smaller inductors with equivalent performance, thereby reducing the overall size of the integrated device and package without sacrificing electrical performance.
Implementation Method 1
The shield structure includes a shield frame and a plurality of shield branches coupled to the shield frame, wherein at least one shield branch from the plurality of shield branches comprises a repeating wave shape
Data Source
AI summary
An integrated device comprising a die substrate, a die interconnection portion coupled to the die substrate, an inductor, and a shield structure. The shield structure comprises a shield frame and a plurality of shield branches coupled to the shield frame, wherein at least one shield branch from the plurality of shield branches comprises a repeating wave shape.