Inductive Die Coupling to Offset Parasitic Capacitance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Reducing internal circuitry size in semiconductor devices to increase device density and performance degrades electrical signal quality and reduces processing bandwidth due to increased parasitic resistance and capacitance, leading to constrained signal integrity and bandwidth capabilities.
Innovation Solution
Implementing inductive coils, such as T-coils, in face-to-face dual-die packages to counteract parasitic and load capacitance, enhancing signal quality and processing bandwidth by matching or equalizing impedance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If internal circuitry size is reduced to increase device density, then device density is improved, but electrical signal quality deteriorates due to increased parasitic resistance and capacitance
Solution Approach 1:
An inductive coil is introduced as an intermediary component between the memory array and the read/write circuitry. This coil acts as a mediator that transforms the electrical signals into magnetic fields and back, enabling signal transmission while isolating the circuitry from the harmful effects of parasitic capacitance and resistance associated with direct electrical connections.
Solution Approach 2:
The patent replaces the traditional electrical connection system with a magnetic coupling system. Instead of using direct electrical conductors that suffer from parasitic effects, the invention uses inductive coupling where electrical signals are converted to magnetic fields for transmission, thereby substituting the electrical field-based system with a magnetic field-based system that avoids parasitic capacitance issues.
2Quantity of substance
If multiple dies are coupled with a same point on a channel to increase device density, then device density is improved, but parasitic impedance and load impedance increase
Solution Approach 1:
The patent segments the coupling mechanism by providing separate inductive coils for each die rather than using a shared electrical connection point. Each die has its own dedicated inductive coupling path, which divides the harmful parasitic effects into separate, isolated channels rather than having them accumulate at a shared connection point.
Solution Approach 2:
Inductive coils are introduced as intermediary components between each die and the channel, replacing direct electrical connections. These coil intermediaries isolate each die's parasitic impedance from the channel and from other dies, preventing the accumulation of parasitic effects that would occur with shared coupling points.
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
Improves signal integrity and processing speeds, enabling densification and performance enhancements in semiconductor devices.
Implementation Method 1
Implementing inductive coils, such as T-coils, in face-to-face dual-die packages to counteract parasitic and load capacitance, enhancing signal quality and processing bandwidth by matching or equalizing impedance
Data Source
AI summary
Systems and devices for semiconductor die coupling with inductive coils are described. A semiconductor device may include one or more inductive coils to enhance signal quality of signals communicated over conductive lines and to support improved processing bandwidth. The semiconductor device may include multiple dies and each die may include respective circuitry. The respective circuitry may be coupled with the one or more inductive coils. In some cases, each die of the semiconductor device may respectively include one or more inductive coils that couple die circuitry with a same channel. In some cases, a redistribution layer that is shared by each die may be configured with one or more inductive coils that are coupled with each die. Each die may be coupled with the one or more inductive coils based on a conductive pillar or based on a hybrid bond.