Sense Amplifier Layout With Wider Routing to Cut Parasitic Capacitance
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Solution Overview
Problem
The increasing integration of semiconductor devices leads to higher requirements on semiconductor processes, increased risk of bridging shorts between adjacent conductive wires, and higher parasitic capacitance, affecting data transmission efficiency and energy consumption.
Innovation Solution
A layout structure forming method for a sense amplifier that includes forming a first active region layout structure layer, a first metal contact pattern layer, a first conductive wire pattern layer, and a first connection hole pattern layer, with the conductive wire pattern extending along a direction and connected through connection hole designs to increase wire width, reducing parasitic capacitance and improving data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the size of semiconductor devices and conductive wires is reduced to increase integration, then integration requirement is improved, but parasitic capacitance increases and data transmission efficiency deteriorates
Solution Approach 1:
The patent introduces a multi-layer layout structure with pattern layers arranged in different dimensions (first pattern region, second pattern region, third pattern region across multiple layers). This dimensional approach allows conductive wires to be routed through multiple layers rather than confined to a single plane, effectively increasing wire width and reducing parasitic capacitance while maintaining high integration density.
2Productivity
If the gap between adjacent conductive wires is reduced to increase integration, then integration requirement is improved, but risk of bridging shorts increases
Solution Approach 1:
The patent utilizes multi-layer routing where conductive wires are distributed across different pattern layers (first, second, third pattern regions). This vertical separation in multiple dimensions provides natural isolation between adjacent wires, reducing the risk of bridging shorts while maintaining small horizontal gaps for high integration.
3Object-generated harmful factors
If multi-layer process is used to reduce wire parasitic capacitance, then parasitic capacitance is reduced, but process complexity increases
Solution Approach 1:
The patent divides the layout into multiple pattern layers (first, second, third pattern regions) with each layer serving specific routing functions. This segmentation allows independent optimization of each layer's pattern design, simplifying the overall process by breaking down the complex multi-layer routing into manageable, standardized segments that can be manufactured separately and assembled.
4Object-generated harmful factors
If conductive wire width is increased to reduce parasitic capacitance, then parasitic capacitance is reduced, but area occupied by wires increases
Solution Approach 1:
The patent increases the effective width of conductive wires by routing them through multiple layers (first, second, third pattern regions stacked vertically). This dimensional approach provides greater wire cross-sectional area for current flow and reduced parasitic capacitance without increasing the horizontal footprint, thereby maintaining high integration density while improving electrical performance.
Data Source
AI summary
The present disclosure relates to a layout structure forming method of a sense amplifier and a layout structure of a sense amplifier. The method includes: providing a first active region layout structure layer, the first metal contact pattern layer includes a first metal contact pattern and a second metal contact pattern that are located on two opposite sides of the first pattern region; the first conductive wire pattern layer includes a first conductive wire pattern covering the first metal contact pattern and the second metal contact pattern; and the first connection hole pattern layer includes a plurality of connection hole designs, and the connection hole designs are connected to form a connection structure connected to the first metal contact pattern layer.