3D Laser Bonding for Curved Electronic Component Alignment
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Solution Overview
Problem
Existing laser bonding technologies struggle to effectively bond electronic components to three-dimensional structures, particularly those with curved or irregular shapes, leading to misalignment, bonding failures, and thermal deformations, which are not addressed by conventional methods like mass reflow and laser reflow techniques.
Innovation Solution
A laser bonding apparatus and method that includes a three-dimensional structure providing unit, an adhesive material applying unit, an electronic component attaching unit, and a laser bonding unit, capable of bonding electronic components to three-dimensional structures with curved or irregular shapes by irradiating a laser beam, using monitoring units to ensure precise alignment and uniform energy distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If mass reflow or conventional laser reflow techniques are used for bonding electronic components to three-dimensional structures, then bonding can be achieved on flat surfaces, but misalignment and bonding failures occur on curved or irregular surfaces
Solution Approach 1:
The laser bonding apparatus employs dynamic adjustment mechanisms that allow real-time modification of bonding parameters including laser power, scanning speed, and focal position. This enables the system to adapt to varying surface geometries and maintain precise bonding alignment across flat, curved, and irregular surfaces by continuously optimizing parameters during the bonding process
Solution Approach 2:
The invention utilizes parameter changes by modifying laser bonding conditions such as power density, pulse duration, scanning velocity, and focal distance according to the specific geometry of the surface being bonded. This allows the same apparatus to effectively bond components to diverse surface types by adjusting parameters rather than requiring different equipment
2Productivity
If conventional laser bonding is used, then bonding speed can be improved, but thermal deformations occur on three-dimensional structures
Solution Approach 1:
The laser bonding apparatus applies localized heating with precise spatial control, concentrating thermal energy only at the immediate bonding interface rather than heating surrounding areas. This localized approach enables rapid bonding while minimizing thermal deformation of the three-dimensional structure by restricting thermal effects to the smallest necessary volume
Solution Approach 2:
The system employs periodic or pulsed laser action with controlled duty cycles, applying thermal energy in short bursts followed by cooling intervals. This periodic heating allows heat dissipation between pulses, preventing cumulative thermal buildup that would cause deformation while maintaining adequate bonding speed through repeated cycles
3Manufacturing precision
If laser bonding is applied to three-dimensional structures, then bonding precision can be improved, but device complexity increases
Solution Approach 1:
The laser bonding apparatus is designed as a universal system capable of bonding electronic components to various surface geometries including flat, curved, and irregular three-dimensional surfaces. By integrating multiple functions such as automated positioning, adaptive parameter control, and multi-axis movement into a single platform, the system achieves high bonding precision across diverse applications without requiring separate specialized equipment for each surface type
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus and method enable precise bonding of electronic components to three-dimensional structures, preventing misalignment and bonding failures, while ensuring uniform energy distribution and reducing thermal deformations, thus enhancing manufacturing efficiency and quality.
Implementation Method 1
bonding the electronic component to the three-dimensional structure by irradiating a laser beam to the electronic component attached to the three-dimensional structure
Data Source
AI summary
Disclosed are a laser bonding apparatus and a laser bonding method capable of bonding an electronic component to a three-dimensional structure having a regular or irregular shape in a curved portion such as an automobile tail lamp or a headlamp. The laser bonding apparatus and method for a three-dimensional structure may prevent misalignment and poor bonding of the electronic component with respect to the three-dimensional structure.