Backside Capacitor Banks for IC Power Delivery Integrity
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Solution Overview
Problem
Conventional power delivery methods in integrated circuits face challenges as more components are built in multiple layers, leading to increased complexity, interference, and reduced integration density on the front side of IC structures.
Innovation Solution
Implementing capacitor banks on the back side of IC structures, which include a plurality of capacitors connected to conductive lines, enhancing power delivery by storing and releasing electrical energy, regulating voltage, and filtering noise, thereby improving signal integrity and integration density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If more components are built in multiple layers on the front side of IC structures, then the capacity and functional density are improved, but the complexity of power delivery and interference between components increases
Solution Approach 1:
The patent moves capacitor banks from the traditional front side of the IC structure to the back side, utilizing the unused back side space. This dimensional relocation separates power delivery components from signal processing components, reducing interference and simplifying front side power delivery while maintaining high component density on the front side.
2Quantity of substance
If more components are built in multiple layers on the front side of IC structures, then the capacity and functional density are improved, but the integration density on the front side is reduced due to space constraints
Solution Approach 1:
By relocating capacitor banks to the back side of the IC structure, the patent effectively utilizes the third dimension (back side space) to accommodate power delivery components. This allows the front side area to be fully dedicated to high-density component placement and signal processing, thereby improving integration density without compromising power delivery functionality.
3Quantity of substance
If conventional power delivery methods are used with increased component density, then the capacity is improved, but the signal integrity and electromagnetic compatibility deteriorate due to increased interference
Solution Approach 1:
The patent segments the IC structure into distinct functional zones: the front side dedicated to signal processing and computation, and the back side dedicated to power delivery and energy storage. This spatial segmentation separates noisy power delivery circuits from sensitive signal circuits, reducing electromagnetic interference and improving signal integrity while maintaining high component density.
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 improves integration density, reduces interference, enhances signal integrity, and contributes to better electromagnetic compatibility by providing stable and reliable operation of electronic circuits.
Implementation Method 1
capacitor banks for power delivery... a first bank of capacitors coupled to a first power delivery network... a second bank of capacitors coupled to a second power delivery network
Data Source
AI summary
Disclosed herein are IC structures with capacitor banks for power delivery. An example IC structure may include a device layer comprising a plurality of transistors, the device layer having a first side and a second side opposite the first side; one or more backend layers at the first side of the device layer, the one or more backend layers comprising backend interconnects coupled to one or more of the plurality of transistors; and one or more backside layers at the second side of the device layer, wherein the one or more backside layers may include a bank of capacitors, a first conductive line, and a second conductive line, such that first electrodes of the capacitors are coupled to the first conductive line, and second electrodes of the capacitors are coupled to the second conductive line.