Embedded Jumper Routing for Dense Source/Drain Connections
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing density of metal structures in semiconductor devices poses challenges in providing adequate electrical connections without displacing existing wiring components, such as contacts and metal lines.
Innovation Solution
The implementation of embedded jumpers that are electrically connected to adjacent source/drain regions within a zone, allowing for new wiring structures that enable circuit routing without displacing earlier formed wiring components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If contact and wire routing density is increased to accommodate more connections, then the number of electrical connections is improved, but the available space for routing decreases and routing options are reduced
Solution Approach 1:
The embedded jumper utilizes the vertical dimension by routing conductive material through trenches in the substrate, allowing connections to pass underneath existing metal interconnect layers. This three-dimensional routing approach enables additional electrical connections without consuming lateral routing space, effectively resolving the contradiction between increasing connection density and maintaining available routing area.
2Adaptability or versatility
If all available space is used for wiring to increase routability, then routing flexibility is improved, but the ability to route wires without displacing existing components deteriorates
Solution Approach 1:
The routing space is segmented into horizontal metal interconnect layers and vertical embedded jumper pathways. This segmentation allows routing operations to be performed in distinct spatial zones, enabling designers to add embedded jumpers for additional routing flexibility without interfering with the placement and routing of existing metal interconnect components.
Solution Approach 2:
The embedded jumper acts as an intermediary routing element that provides alternative signal paths underneath existing metal interconnects. This mediator approach enables routing flexibility by offering additional pathways without requiring displacement of established wiring components, as the embedded jumpers operate in a separate vertical layer.
3Quantity of substance
If stacked transistor devices are positioned in close proximity to increase areal density, then device density is improved, but spatial and electrical constraints increase making performance achievement more difficult
Solution Approach 1:
The embedded jumper provides vertical routing capability that allows electrical connections to bypass spatial constraints imposed by closely spaced stacked transistors. By routing signals through the substrate depth rather than laterally between dense device structures, the embedded jumper reduces electrical interference and crosstalk while maintaining high device density.
Data Source
AI summary
A semiconductor device includes an active region layer having source/drain regions laterally disposed relative to one another in a row and having a zone bounded between adjacent source/drain regions. An embedded jumper is electrically connected to two adjacent source/drain regions within the zone.