Capacitor Protrusion Insulation for Short-Circuit Prevention
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Solution Overview
Problem
Existing capacitors in electronic devices face challenges in stabilizing voltage levels due to the proximity of electrodes and lack of effective insulation, leading to potential short-circuits and reduced operational yield.
Innovation Solution
A capacitor design featuring a substrate with a protrusion that penetrates the second electrode and extends into an insulating layer, creating a gap that electrically separates the protrusion from the electrode, preventing short-circuits and ensuring stable voltage stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the electrodes are placed close to each other to reduce device area, then the area is reduced, but the risk of short-circuit increases due to insufficient insulation
Solution Approach 1:
The patent introduces a protrusion structure as an intermediary element between the first electrode and second electrode. This protrusion extends from the substrate into the insulating layer, creating a physical barrier and increasing the insulation distance between electrodes without increasing the overall capacitor area. The protrusion acts as a mediator that maintains electrical isolation while allowing compact electrode placement.
Solution Approach 2:
The patent transitions from a two-dimensional planar insulation approach to a three-dimensional structure by adding vertical protrusions that extend into the insulating layer. This dimensional change creates additional insulation path length without increasing the horizontal area, effectively resolving the contradiction between compact area and sufficient insulation distance.
2Reliability
If the insulating layer thickness is increased to prevent short-circuits, then the short-circuit risk is reduced, but the capacitor area and device complexity increase
Solution Approach 1:
Instead of increasing the insulating layer thickness in the horizontal plane, the patent utilizes the vertical dimension by adding protrusions that extend upward into the insulating layer. This creates additional insulation distance in the Z-direction without increasing the X-Y plane area, effectively preventing short-circuits while maintaining compact device area.
Solution Approach 2:
The patent segments the insulating space by introducing protrusion structures that divide the insulation region into multiple zones. This segmentation creates multiple insulation barriers between electrodes, enhancing reliability without requiring a uniformly thick insulating layer across the entire capacitor area.
3Productivity
If the electrodes are placed close together to improve integration density, then the integration density is improved, but the voltage stabilization capability deteriorates
Solution Approach 1:
The protrusion structure serves as a mediator that maintains proper voltage isolation between closely spaced electrodes. By extending into the insulating layer, the protrusion ensures adequate electrical distance is maintained even when electrodes are placed close together for high integration density, thereby preserving voltage stabilization capability.
Solution Approach 2:
The patent uses vertical protrusions to create insulation distance in the third dimension, allowing electrodes to be placed close in the horizontal plane for high integration density while maintaining sufficient voltage isolation through the vertical extension of protrusions into the insulating layer.
Data Source
AI summary
The disclosure provides a capacitor and an electronic device. The capacitor is disposed on a substrate with a protrusion. The capacitor includes a first electrode, a second electrode, and an insulating layer. The first electrode has a first voltage. The second electrode has a second voltage different from the first voltage. The second electrode is closer to the substrate than the first electrode. The insulating layer is disposed between the first electrode and the second electrode. The protrusion penetrates the second electrode and extends into the insulating layer. The electronic device includes the capacitor. The capacitor and the electronic device of the embodiments in the disclosure have a better yield.