Memory Wiring Layer Layout for Circuit Region Isolation
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Solution Overview
Problem
Existing semiconductor memory devices face challenges in efficiently integrating and connecting various circuit regions and layers, leading to inefficiencies in data storage and retrieval operations.
Innovation Solution
A semiconductor memory device design that includes a wiring layer interposed between a semiconductor substrate and a memory layer, with distinct circuit regions and boundary regions, allowing for efficient electrical connections and data transfer through a passing wiring region, utilizing a layered structure with symmetrical wiring patterns for enhanced connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wiring layer is stacked in a direction intersecting with the substrate surface to connect memory layers, then connectivity between circuit regions is improved, but electrical interference between adjacent circuit regions increases
Solution Approach 1:
The substrate is divided into distinct circuit regions (first circuit region, second circuit region, third circuit region) separated by boundary regions. The wiring layer is segmented into first boundary region, second boundary region, and passing wiring region, with each segment serving specific functions to isolate and connect circuit regions while minimizing interference.
Solution Approach 2:
Boundary regions act as intermediary zones between adjacent circuit regions. These boundary regions contain wiring groups that mediate electrical connections while providing isolation, reducing direct electrical interference between the first, second, and third circuit regions.
2Adaptability or versatility
If multiple circuit regions are integrated on the same substrate, then device functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The substrate is segmented into multiple functional circuit regions (first circuit region with first circuit, second circuit region with second circuit, third circuit region with third circuit) that can be independently designed and manufactured, then integrated through the wiring layer structure.
Solution Approach 2:
The wiring layer is stacked in a direction intersecting with the substrate surface (vertical dimension), creating a three-dimensional integrated structure. This allows multiple circuit regions to be connected through vertical wiring paths, reducing the need for extensive lateral routing and simplifying the manufacturing process for complex multi-functional devices.
3Manufacturing precision
If wiring groups are positioned at the same layer height for boundary and passing regions, then manufacturing precision is improved, but electrical interference between wiring groups increases
Solution Approach 1:
Wiring groups are segmented into first wiring group, second wiring group, and passing wiring group, each positioned in specific regions. The first wiring group is in the first boundary region, the second wiring group is in the second boundary region, and the passing wiring group is in the passing wiring region, allowing precise alignment while maintaining electrical isolation through spatial separation.
Solution Approach 2:
Different wiring groups have different local functions and positioning requirements. The first wiring group connects to the first circuit region, the second wiring group connects to the second circuit region, and the passing wiring group passes through the second circuit region. Each wiring group is optimized for its specific location and function, achieving precise manufacturing alignment while minimizing electrical interference through localized optimization.
Data Source
AI summary
A semiconductor substrate includes a first circuit region, a second circuit region, and a third circuit region. A wiring layer includes a first boundary region that includes a first boundary between the first and second circuit regions, a second boundary region that includes a second boundary between the second and the third circuit regions, and a passing wiring region between the first and second boundary regions. The first boundary region includes a first wiring group, the second boundary region includes a second wiring group, and the passing wiring region includes a passing wiring group. The first wiring group, the second wiring group, and the passing wiring group are disposed in a same layer. A wiring disposed in a same layer as the passing wiring group and electrically connected to the second circuit region is included in any one of the first and second wiring groups.