Non-Circular Connection Elements for Component Carrier Centering
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Solution Overview
Problem
Conventional component carriers face challenges in achieving accurate centering and high package densities during connection processes, leading to potential misalignment and reduced mechanical strength.
Innovation Solution
The implementation of a connection arrangement with first and second electrically conductive connection elements that establish a form fit along a connection direction, utilizing non-circular cross-sections and cooperating surfaces for enhanced centering, and incorporating solderable materials with dimples to facilitate reliable soldering and mechanical support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional pads and vias are used for connection, then the connection arrangement can be formed, but accurate centering between connection partners is difficult to achieve
Solution Approach 1:
The connection elements are designed with non-circular cross-sections (e.g., rectangular, triangular, or other asymmetric shapes) instead of conventional circular pads and vias. This asymmetric geometry creates inherent directional guidance that enables accurate centering between connection partners during the assembly process, directly resolving the centering accuracy issue.
Solution Approach 2:
The form fit between connection elements is established before the final soldering or bonding operation. The non-circular cross-sections create mechanical guidance that pre-aligns the connection partners, ensuring accurate centering is achieved prior to the irreversible bonding step, thereby improving both measurement and manufacturing precision.
2Productivity
If conventional circular pads and vias are used, then the connection can be formed, but high package densities cannot be achieved
Solution Approach 1:
By using non-circular cross-sections for connection elements, the design enables more efficient space utilization and tighter packing arrangements. The asymmetric shapes allow for optimized routing and reduced spacing requirements between adjacent connections, directly enabling higher package densities while maintaining alignment precision through the inherent geometric guidance.
3Strength
If connection elements are connected without form fit, then the connection process is simpler, but mechanical strength is reduced
Solution Approach 1:
The non-circular cross-sections of the connection elements create a form fit mechanism that provides enhanced mechanical strength through geometric interlocking. The asymmetric shape prevents lateral displacement and improves bonding surface contact, thereby increasing mechanical strength without requiring additional complex structural features or attachment mechanisms.
Data Source
AI summary
A connection arrangement for forming a component carrier structure is disclosed. The connection arrangement includes a first electrically conductive connection element and a second electrically conductive connection element. The first connection element and the second connection element are configured such that, upon connecting the first connection element with the second connection element along a connection direction, a form fit is established between the first connection element and the second connection element that limits a relative motion between the first connection element and the second connection element in a plane perpendicular to the connection direction. A component carrier and a method of forming a component carrier structure are also disclosed.