MLCC Interposer Mounting With Plate Alignment for Noise Stability
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Solution Overview
Problem
It is challenging to precisely position an interposer relative to a multilayer ceramic capacitor main body during mounting, which can lead to issues such as acoustic noise and instability.
Innovation Solution
A method of manufacturing multilayer ceramic capacitors that involves alternately laminating dielectric and internal electrode layers, forming external electrodes, connecting interposers via a plate-shaped member, and removing the plate-shaped member to facilitate precise positioning and improve mounting stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an interposer is mounted on a capacitor main body to suppress acoustic noise, then acoustic noise is reduced, but positioning precision between the interposer and capacitor main body deteriorates
Solution Approach 1:
A plate-shaped member is introduced as an intermediary component between the capacitor main body and the interposer. This plate-shaped member serves as a mediator that facilitates precise positioning of the interposer relative to the capacitor main body during mounting, while still enabling the interposer to fulfill its acoustic noise suppression function. The plate-shaped member includes positioning protrusions that engage with corresponding positioning recesses on the capacitor main body, ensuring accurate alignment.
Solution Approach 2:
The mounting structure is segmented into multiple functional components: the capacitor main body, the plate-shaped member (which may include positioning protrusions and connection structures), and the interposer. This segmentation allows each component to perform its specific function - the plate-shaped member handles positioning and mechanical connection, while the interposer focuses on acoustic noise suppression, thereby resolving the contradiction between positioning precision and noise reduction effectiveness.
2Object-affected harmful factors
If an interposer is mounted on a capacitor main body to suppress acoustic noise, then acoustic noise is reduced, but mounting stability deteriorates
Solution Approach 1:
The plate-shaped member acts as a mediator that provides a stable mounting interface between the capacitor main body and the interposer. It includes connection structures such as positioning protrusions with engaging features (e.g., hooks, clips, or interlocking mechanisms) that securely attach the interposer to the capacitor main body, thereby ensuring mounting stability while maintaining the acoustic noise suppression function.
Solution Approach 2:
The plate-shaped member may incorporate curved or tapered surfaces that facilitate snap-fit or elastic deformation-based mounting mechanisms. These curved geometries allow for easy attachment and detachment while maintaining strong mechanical bonding, thereby improving mounting stability without compromising the acoustic noise reduction capability of the interposer.
3Volume of moving object
If the capacitor main body is made smaller to reduce size, then miniaturization is achieved, but bending strength deteriorates
Solution Approach 1:
The capacitor main body is constructed using composite materials or multi-layer structures that provide high strength-to-volume ratio. The dielectric layers and internal electrode layers are alternately laminated to form a compact multilayer structure that maintains bending strength despite reduced overall size. Additionally, the plate-shaped member made of rigid material further reinforces the structure, preventing bending while keeping the capacitor miniaturized.
Solution Approach 2:
The plate-shaped member extends in the horizontal dimension (perpendicular to the stacking direction of dielectric layers), providing structural reinforcement without increasing the vertical height of the capacitor. This dimensional approach allows the capacitor to maintain small profile while gaining enhanced bending strength through the laterally extending plate structure that acts as a stiffening element.
Data Source
AI summary
A method of manufacturing a multilayer ceramic capacitor includes alternately laminating dielectric layers and internal electrode layers to manufacture a multilayer body, forming an external electrode connected with the internal electrode layers on each of two end surfaces of the multilayer body to manufacture a capacitor main body, connecting two interposers via a plate-shaped member, connecting the two interposers and the external electrode, and removing the plate-shape member.