Chip Conductive Layer Layout for Lower Resistance Charging Paths
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Solution Overview
Problem
The challenge of forming reliable semiconductor devices at smaller sizes is exacerbated by the increasing complexity of fabrication processes as feature sizes continue to decrease, affecting production efficiency and cost.
Innovation Solution
A chip structure is developed with integrated conductive layers and capacitors that include specific materials and processes, such as high-k dielectric materials and conductive vias, to enhance electrical connectivity and reduce resistance, thereby improving charging speed and operation frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If feature sizes continue to decrease to increase functional density, then production efficiency and cost are improved, but fabrication process complexity and difficulty increase
Solution Approach 1:
The patent introduces a conductive layer positioned between the capacitor and the top metal layer, adding a new dimensional element to the existing structure. This additional layer provides new conduction paths and electrical connections without requiring changes to the fundamental feature sizes, thereby improving productivity while avoiding increased fabrication complexity
Solution Approach 2:
The patent segments the electrical connection path by introducing separate conductive layers and vias between the capacitor and top metal layer. This segmentation allows for independent optimization of different portions of the electrical path, enabling improved overall performance without requiring complex monolithic structures
2Productivity
If feature sizes continue to decrease, then functional density increases, but reliability of semiconductor devices decreases
Solution Approach 1:
By adding a conductive layer in the vertical dimension between the capacitor and top metal layer, the patent creates alternative electrical paths that are independent of the scaled-down horizontal features. This dimensional addition provides redundancy and reliability without requiring larger feature sizes
Solution Approach 2:
The patent applies different material properties and structural characteristics to specific local regions - the conductive layer between the capacitor and top metal layer has optimized local electrical properties that enhance overall device reliability without affecting the global scaling benefits
Data Source
AI summary
A chip structure is provided. The chip structure includes a semiconductor substrate. The chip structure includes a first conductive layer over the semiconductor substrate. The chip structure includes a conductive via passing through the first conductive layer and electrically connected to the first conductive layer. The chip structure includes a conductive pad over and connected to the conductive via. The chip structure includes a second conductive layer over and spaced apart from the first conductive layer. The chip structure includes a third conductive layer over the first dielectric layer. The chip structure includes a second dielectric layer covering and connected to the first corner, the second corner, and the third corner of the third conductive layer.