Substrate Transfer Block Segmentation for Robot Overload Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing substrate-processing apparatuses face inefficiencies due to varying processing times, leading to increased waiting times and overload for substrate-transferring robots, and not all processing units are utilized in every process, resulting in reduced throughput.
Innovation Solution
The apparatus is designed with multiple processing blocks and transfer blocks, including a main transfer block and auxiliary transfer blocks with robot arms and intra-chamber robots, allowing for efficient transfer and simultaneous or continuous baking and cooling processes, reducing the load on main transfer robots and enabling flexible configuration based on process recipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple processing units are added to handle different processes, then process capability is improved, but device complexity increases and throughput deteriorates due to substrate waiting times and robot overload
Solution Approach 1:
The processing apparatus is divided into multiple independent processing blocks (first processing block for coating/developing, second processing block for heat treatment, third processing block for cooling) that can operate simultaneously on different substrates. This segmentation allows parallel processing, eliminating the sequential bottlenecks that previously reduced throughput while maintaining high process capability.
Solution Approach 2:
Transfer blocks with robots act as intermediaries between processing blocks, enabling seamless substrate transfer while allowing each processing block to operate independently. The intermediary transfer mechanism decouples the processing blocks, so that substrate waiting times are minimized and robot overload is prevented through coordinated intermediate transfer operations.
2Adaptability or versatility
If processing units are added to increase process capability, then more processes can be performed, but substrate waiting times increase and robot overload occurs
Solution Approach 1:
Multiple processing blocks operate continuously and simultaneously on different substrates, eliminating idle waiting periods. While one substrate is being processed in the first block, another substrate can be processed in the second block, and a third in the third block, ensuring continuous useful action across the entire system and minimizing substrate waiting times.
Solution Approach 2:
Substrates are prepared and transferred in advance to appropriate processing blocks based on process requirements. The system anticipates processing needs and positions substrates in optimal processing blocks before actual processing begins, reducing waiting time through preliminary positioning and preparation.
3Device complexity
If a single robot transfers substrates between all processing units, then device complexity is reduced, but the robot becomes overloaded and throughput decreases
Solution Approach 1:
The transfer function is segmented into multiple independent robots, each responsible for transferring substrates between specific processing blocks. This distribution of transfer responsibilities prevents any single robot from becoming overloaded, as each robot handles only a subset of transfer operations, thereby maintaining high throughput without excessive complexity.
Solution Approach 2:
Each robot is designed to perform multiple transfer operations between different processing blocks, providing universal functionality. The robots can adapt to transfer substrates between various blocks as needed, reducing the need for specialized dedicated transfer mechanisms while maintaining efficient throughput.
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 configuration improves the throughput of the substrate-processing apparatus by reducing the load on main transfer robots and allowing for simultaneous or continuous processing, enhancing the efficiency of coating, baking, and developing processes.
Implementation Method 1
a second processing block disposed opposite to the first processing block to heat-treat the substrates
Implementation Method 2
cooling units for cooling substrates heated by the heating units
Data Source
AI summary
In a substrate-processing apparatus for performing coating, baking and developing processes on a semiconductor substrate, a first processing block performs a coating process and a developing process. A second processing block is disposed opposite to the first processing block to heat-treat substrates. A main transfer block is disposed between the first and second processing blocks to transfer the substrates. A third processing block is disposed on one side of the main transfer block in a direction perpendicular to an arrangement direction of the first and second processing blocks to adjust a temperature of the substrates. An auxiliary transfer block is disposed adjacent to the second and third processing blocks to transfer the substrates between the second and third processing blocks. Thus, an overload of the main transfer block may be reduced.