Circuit Board Registration Marks for Precision Alignment
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Solution Overview
Problem
Current methods for producing multilayer circuit boards face inaccuracies in the registration and positioning of individual circuit board areas, leading to difficulties in further processing and miniaturization due to uncertainties in relative positions during connection and bonding.
Innovation Solution
The method involves forming registration marks on a substrate material and orienting the first circuit board area relative to these marks, allowing for precise positioning of additional circuit board areas, which are then connected via conducting patterns, with optional use of adhesives for fixation and conducting films for substrate material, enabling enhanced accuracy and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If individual circuit board areas are separately produced and arranged on substrate material, then production flexibility and miniaturization are improved, but registration precision and positioning accuracy deteriorate due to tolerances in individual area production
Solution Approach 1:
Registration marks are formed on the substrate material before the circuit board areas are arranged and connected. This preliminary action establishes a reference framework that guides the precise positioning of individual circuit board areas, ensuring accurate registration even when areas are produced separately with inherent tolerances.
2Reliability
If large bonding sites are provided to ensure appropriate contacting of circuit board areas, then connection reliability is improved, but miniaturization capability deteriorates
Solution Approach 1:
The patent replaces mechanical alignment methods with an optical/reference-based system using registration marks. This substitution allows for precise positioning without relying on large mechanical bonding sites, enabling miniaturization while maintaining connection reliability through accurate registration.
3Adaptability or versatility
If additional layers are connected to separately produced circuit board areas, then multilayer circuit board functionality is improved, but positioning accuracy deteriorates due to cumulative tolerances
Solution Approach 1:
The registration marks serve multiple functions: they guide the arrangement of individual circuit board areas, facilitate accurate connection between areas, and enable precise positioning of additional layers. This universal reference system maintains positioning accuracy across all multilayer operations despite separate production of each component.
Data Source
AI summary
A circuit board includes a plurality of circuit board areas, wherein the individual circuit board areas include at least one layer made of an in insulating base material and a conducting pattern located on or in, the base material, the following is provided: a substrate material, at least one registration mark formed in the substrate material, a first circuit board area arranged on the substrate material, at least one additional circuit board area, which substantially adjoins the first circuit board area or at least partially overlaps the first circuit board, the additional circuit board areas being oriented relative to the registration mark, and a plurality of connections of the conducting patterns of the first circuit board area and of the at least one additional circuit board area. Thus improved registration and orientation can be achieved when circuit board areas are coupled.