Pool Capacitor Memory Die Stabilizes I/O Current
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Solution Overview
Problem
In semiconductor memory devices, large swings in current on power I/O pads can cause distortion of synchronization clock signals, leading to unreliable synchronization, and simply adding capacitors increases the device size, which is undesirable for smaller electronic devices.
Innovation Solution
Converting unused portions of the memory die into usable pool capacitors connected to the power I/O pad to stabilize current and prevent signal distortion, while maintaining a compact device form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If capacitors are added to stabilize current on power I/O pads, then signal distortion is prevented, but device size increases
Solution Approach 1:
The memory die is designed to perform multiple functions: it serves as both the memory storage device and as a pool capacitor for stabilizing power I/O pad current. By integrating the capacitor function within the memory die structure itself, the patent eliminates the need for separate external capacitors, thus preventing signal distortion without increasing overall device size.
Solution Approach 2:
The patent combines the memory die with capacitor functionality by configuring sections of the memory die to operate as a pool capacitor. This merging of functions allows the same physical structure to provide both memory operations and power stabilization, resolving the contradiction between reliability improvement and device size increase.
2Reliability
If current stabilization is implemented using external capacitors, then power I/O pad stability is improved, but device complexity increases
Solution Approach 1:
The memory die is configured to serve dual purposes: memory operations and power stabilization. By making the memory die itself capable of functioning as a pool capacitor, the patent avoids adding separate stabilization components, thus improving power I/O pad stability without increasing device structure complexity.
Solution Approach 2:
The memory die provides its own power stabilization capability by utilizing its internal structure as a pool capacitor. This self-service approach eliminates the need for external stabilization components, thereby improving power I/O pad stability while maintaining simple device structure.
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
This solution effectively stabilizes the current on power I/O pads, preventing signal distortion and ensuring reliable communication between the memory die and controller without increasing the device size.
Implementation Method 1
A memory die is provided with a pool capacitor for stabilizing a power input/output (I/O) pad
Data Source
AI summary
A non-volatile storage apparatus comprises a non-volatile memory structure and an I/O interface. A portion of the memory die is used as a pool capacitor for the I/O interface.