Anti-Fuse Semiconductor Layout for Higher Integration Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current semiconductor structures face limitations in feature size and density, hindering further integration and performance enhancement in integrated circuits, particularly with two-dimensional layouts.
Innovation Solution
A semiconductor structure is designed with a substrate featuring a well region and doped regions of different conductivity types, where the second conductivity type doped region surrounds the first, forming specific geometric profiles, and an anti-fuse is strategically placed between transistors to enhance electrical connectivity and uniformity, along with a contact structure and dielectric layer to improve integration density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If 2D integrated circuit layouts are used, then manufacturing is simpler, but feature size and density are limited
Solution Approach 1:
The patent transitions from traditional 2D planar layouts to a three-dimensional stacked architecture where memory cells are arranged vertically across multiple levels. This dimensional change enables continued scaling of feature size and density without proportionally increasing manufacturing complexity, as the vertical stacking can be achieved through established semiconductor processing techniques such as through-silicon vias and stacked transistor structures.
2Quantity of substance
If feature size is decreased to increase density, then integration density improves, but manufacturing precision requirements increase
Solution Approach 1:
By stacking memory cells vertically in three dimensions, the patent achieves higher integration density without proportionally reducing the lateral feature size. This allows manufacturing processes to maintain their precision requirements while still increasing the number of functional elements per chip area, as density improvement comes from the vertical dimension rather than lateral miniaturization.
Solution Approach 2:
The stacked memory cell structure nests multiple functional layers within a compact vertical footprint. Each memory cell level is nested above the other, with shared substrate and interconnect structures, effectively packing more functionality into a smaller overall volume without requiring proportionally smaller individual feature dimensions.
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 configuration allows for a reduction in feature size, increased integration density, and improved performance by ensuring uniformity and efficient electrical connectivity between transistors.
Implementation Method 1
The substrate includes a well region, a first conductivity type doped region in the well region, and a second conductivity type doped region in the well region... the anti-fuse is electrically connected to the first transistor and the second transistor
Data Source
AI summary
A semiconductor structure includes a substrate, an anti-fuse, first and second transistors, a contact structure, and a dielectric layer. The substrate includes a well region and first and second conductivity type doped regions in the well region, in which the second conductivity type doped region surrounds the first conductivity type doped region and includes a first portion and a second portion perpendicular to the first portion in a top view. The anti-fuse is in an anti-fuse region of the first conductivity type doped region. The first and second transistors are in the well region. The anti-fuse is disposed between the first and second transistors, and the anti-fuse is electrically connected to the first and second transistors. The contact structure is above the anti-fuse. The dielectric layer is between the contact structure and the anti-fuse region of the first conductivity type doped region.