Multi-Chuck Substrate Bonding for Stable High-Throughput Transfer
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Solution Overview
Problem
Conventional substrate bonding processes using a pair of chucks have low productivity and are prone to tilting and de-bonding of substrates during transfer.
Innovation Solution
A substrate bonding device with a bonding chamber having a loading region, bonding region, and unloading region, and movable lower chucks, along with an upper chuck, a first transfer module, a heat processing device, and a second transfer module, allowing continuous substrate bonding and heat treatment processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a pair of chucks is used for substrate bonding, then the bonding process can be performed, but productivity is low
Solution Approach 1:
The bonding chamber is divided into three distinct regions: loading region, bonding region, and unloading region. Multiple lower chucks (first, second, third lower chucks) are distributed across these regions, allowing simultaneous preparation, bonding, and unloading operations to increase throughput while maintaining manageable system complexity
Solution Approach 2:
The lower chucks are designed to be movable between different regions (loading, bonding, unloading) rather than being fixed. This dynamic reconfiguration allows the system to optimize the bonding process by flexibly allocating chuck resources across different operational stages, improving productivity without requiring a complete system redesign
2Reliability
If substrates are transferred using conventional methods, then transfer can be completed, but substrates may tilt and de-bond
Solution Approach 1:
Different regions of the bonding chamber provide different functional qualities: the loading region prepares substrates, the bonding region performs the actual bonding with controlled conditions, and the unloading region completes the process. This localized functional differentiation ensures that substrates receive appropriate treatment at each stage, preventing tilting and de-bonding during transfer
Solution Approach 2:
The bonding chamber acts as an intermediary environment that controls the transfer process between loading and unloading regions. By providing a controlled intermediate space with multiple chucks positioned at different stages, the system ensures stable substrate handling and prevents de-bonding that would occur in direct transfer methods
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
Increases productivity and prevents tilting and de-bonding of substrates by enabling continuous bonding and heat treatment processes.
Implementation Method 1
a heat processing device arranged near the substrate bonding device, and the heat processing device configured to heat-treat the lower substrate bonded with the upper substrate unloaded from the substrate bonding device
Data Source
AI summary
A substrate bonding device including: a bonding chamber including (i) a loading region in which a lower substrate is loaded, (ii) a bonding region in which an upper substrate is bonded to the lower substrate, and (iii) an unloading region spaced from the loading region and unloading the lower substrate to which the upper substrate is bonded in an internal space; a plurality lower chucks configured to support the lower substrate, each lower chuck moveable to be sequentially disposed in the loading region, the bonding region, and the unloading region; and an upper chuck configured to support the upper substrate to face the lower substrate in the bonding region.