Semiconductor Bonding Alignment Detection During Substrate Cooling
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Solution Overview
Problem
Semiconductor packaging technologies face challenges in detecting defects, particularly misalignment, during the bonding process between semiconductor substrates and carrier substrates, which can lead to defects in the bonded substrate.
Innovation Solution
A semiconductor packaging apparatus is designed with a detection part integrated into the cooling process unit, utilizing image measurement components to detect defects such as misalignment, surface defects, or other issues in the bonded substrate, and a controller to control the process based on the detected data, ensuring minimal defect occurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a bonding process is performed to bond semiconductor substrate and carrier substrate, then the semiconductor device can be manufactured with through electrodes, but misalignment between substrates may occur leading to defects
Solution Approach 1:
The patent applies preliminary action by performing alignment detection before the bonding process. The detection part measures the positions of through electrodes and calculates alignment deviation in advance, allowing corrective actions to be taken before bonding occurs, thus preventing misalignment defects while maintaining manufacturing efficiency
Solution Approach 2:
The patent implements feedback by using the detection part to measure through electrode positions, calculating alignment deviation, and providing this information back to the bonding process. This feedback mechanism enables real-time adjustment of alignment parameters, ensuring precise bonding while maintaining high productivity
2Manufacturing precision
If alignment detection is performed before bonding, then misalignment can be corrected, but the manufacturing process time increases
Solution Approach 1:
The patent applies partial action by performing detection on only the critical through electrodes that indicate alignment status, rather than inspecting the entire substrate. This selective detection approach provides sufficient alignment information while minimizing the time added to the manufacturing process
3Reliability
If defect detection is performed during cooling process, then defects can be detected in real-time, but the detection system complexity increases
Solution Approach 1:
The patent applies multi-functionality by designing the detection part to serve multiple purposes: detecting alignment deviation before bonding and detecting defects during cooling. This universal detection system provides reliable defect detection without requiring separate dedicated detection systems, thus limiting the increase in overall system complexity
Data Source
AI summary
A semiconductor packaging apparatus and methods of manufacturing semiconductor devices using the same. The semiconductor packaging apparatus includes a process unit, and a controller associated with the process unit. The process unit includes a bonding part that bonds a semiconductor substrate and a carrier substrate to each other to form a bonded substrate, a cooling part that cools the bonded substrate, and a detection part in the cooling part and configured to detect a defect of the bonded substrate. The controller is configured to control the process unit using data obtained from the detection part.