Flash Memory Layout Asymmetry for Signal Delay Reduction
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Solution Overview
Problem
Conventional flash memory devices suffer from inefficient layout and signal delay due to the rectangular shape of the peripheral control region, which is dictated by the core region's layout, leading to suboptimal signal transfer line configurations.
Innovation Solution
A flash memory device layout where the peripheral control region is vertically disposed to one side of the core region, with dual high-voltage pump regions laterally disposed on both sides, allowing for a square shape of the peripheral control region and optimizing signal transfer by reducing signal delay and improving layout efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the peripheral control region is disposed in a rectangular shape dictated by the core region layout, then the layout structure is simple and easy to manufacture, but signal transfer lines are necessarily extended causing signal delay
Solution Approach 1:
The patent applies asymmetry by changing the peripheral control region from a conventional rectangular shape to a substantially square shape. This asymmetric modification relative to the core region allows signal transfer lines to be positioned more optimally, reducing their extension length and consequently decreasing signal delay while maintaining manufacturing feasibility.
Solution Approach 2:
The patent repositions the peripheral control region from a lateral arrangement to a vertical arrangement above the core region. This dimensional change in layout configuration enables signal transfer lines to connect more directly between regions, reducing the number of extensions required and minimizing signal delay without compromising ease of manufacture.
2Adaptability or versatility
If the peripheral control region is disposed in a rectangular shape, then the layout follows conventional design rules, but layout efficiency suffers due to suboptimal signal transfer line configuration
Solution Approach 1:
The patent introduces dynamic adaptability by allowing the peripheral control region to assume a flexible square configuration rather than being constrained to a fixed rectangular shape. This dynamic layout approach enables optimal positioning of signal transfer lines and circuit elements, significantly improving layout efficiency while maintaining adaptability to different design requirements.
Data Source
AI summary
A flash memory device includes a core region, high-voltage pump regions disposed at one side of the core region, and a peripheral control region disposed at one side of the core region and between the high-voltage pump regions.