Semiconductor Bonding Apparatus Load Control
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Solution Overview
Problem
Current semiconductor device manufacturing processes face challenges in precisely controlling the movement and load application of a head section relative to a stage during the mounting of semiconductor elements, which can lead to issues such as short circuits, open circuits, and mechanical damage due to inadequate control over thermal expansion and contraction.
Innovation Solution
A semiconductor device manufacturing apparatus with a head section and stage that includes a driving section, load sensor, and controller to precisely control the movement and load application, using temperature and load sensors to manage the positioning and pressure applied during the bonding process, ensuring accurate contact and separation of solder bumps and metal pads while managing thermal expansion and contraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the head section and stage are moved closer together to improve bonding precision, then manufacturing precision is improved, but thermal expansion and contraction cause misalignment and reduce reliability
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the positional relationship between the head section and stage based on temperature feedback. Temperature sensors monitor thermal conditions, and the control unit modifies positioning parameters to compensate for thermal expansion and contraction, maintaining precise alignment despite temperature variations during the bonding process.
Solution Approach 2:
The patent implements feedback control through temperature sensors that continuously monitor thermal conditions of the head section and stage. The control unit receives this temperature information and adjusts the positioning of the head section or stage accordingly, creating a closed-loop system that maintains alignment stability while preserving bonding precision.
2Manufacturing precision
If the head section applies greater load to ensure proper contact during bonding, then bonding quality is improved, but mechanical damage risk increases
Solution Approach 1:
The patent uses load sensors to provide real-time feedback on the contact force between the head section and the workpiece. The control unit processes this load information and dynamically adjusts the applied force, ensuring sufficient contact pressure for quality bonding while preventing excessive load that could cause mechanical damage to delicate components.
Solution Approach 2:
The patent applies dynamics by transitioning from static load application to dynamic load control. The system continuously monitors load conditions and adjusts the pressing force in real-time during the bonding process, adapting the magnitude of applied force to match the specific requirements of each bonding stage and preventing both insufficient contact and excessive pressure.
3Reliability
If the bonding process is extended to ensure complete solder bump attachment, then reliability is improved, but manufacturing throughput decreases
Solution Approach 1:
The patent implements feedback control through load sensors that monitor the bonding process in real-time. The control unit analyzes load value changes to determine when solder bumps have achieved sufficient attachment, enabling early termination of the bonding process. This feedback mechanism ensures reliable attachment while minimizing unnecessary process extension, thereby maintaining high manufacturing throughput.
Solution Approach 2:
The patent replaces time-based process control with sensor-based detection. Instead of extending the bonding process duration to ensure attachment, the system uses load sensors and control algorithms to detect attachment completion, substituting mechanical waiting time with intelligent sensing and decision-making to achieve both reliability and efficiency.
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
This solution enhances the precision and reliability of the bonding process, reducing the risk of short circuits and mechanical damage, and improves manufacturing throughput by allowing for early separation of the semiconductor element, thus enhancing the reliability and cost-effectiveness of the semiconductor device.
Implementation Method 1
a load sensor configured to sense a load value of the applied load
Implementation Method 2
a driving section configured to drive one of the head section and the stage to move in a first direction intersecting the head section and the stage and apply a load to the other one of the stage and the head section
Implementation Method 3
a controller configured to control the driving section to move one of the head section and the stage, and then separate the head section from the stage in accordance with a change in the load value
Data Source
AI summary
A semiconductor device manufacturing apparatus includes a stage, a head section facing the stage and configured to hold a semiconductor element, a driving section configured to drive one of the head section and the stage to move in a first direction intersecting the head section and the stage and apply a load to the other one of the stage and the head section, a load sensor configured to sense a load value of the applied load, and a controller configured to control the driving section to move one of the head section and the stage, and then separate the head section from the stage in accordance with a change in the load value.