Substrate Processing Apparatus Atmosphere Segmentation
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Solution Overview
Problem
In semiconductor and flat display manufacturing, existing substrate processing systems face inefficiencies when performing different processes in varying atmospheres, leading to productivity losses due to the need for frequent atmosphere changes and sequential processing.
Innovation Solution
A substrate processing apparatus is designed with separate process units for different atmospheres, featuring transformation units that maintain and switch between these atmospheres efficiently, allowing concurrent processing and reducing the area required for installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cluster tool with a central chamber is used to transfer substrates between process chambers, then the production line can operate continuously when one process station stops, but the efficiency is lowered when processes require different atmospheres because the central chamber must change states between vacuum and atmospheric pressure
Solution Approach 1:
The system is divided into multiple independent process lines, each with its own transfer chamber. This segmentation allows each line to maintain its atmosphere independently, eliminating the need for the entire central chamber to change atmosphere when transferring between processes requiring different atmospheric conditions, thus resolving the contradiction between continuous operation capability and process efficiency
Solution Approach 2:
Independent transfer chambers are introduced as intermediary components between process chambers. These transfer chambers can be isolated and controlled separately, allowing substrate transfer without requiring the main process chambers to change their atmospheric states, thereby maintaining both continuous operation and high process efficiency
2Adaptability or versatility
If the central chamber changes atmosphere state to transfer substrates between vacuum and atmospheric pressure processes, then substrate transfer between different atmosphere processes is enabled, but the overall process efficiency is lowered due to atmosphere transformation time
Solution Approach 1:
The transfer system is segmented into multiple independent transfer chambers, each capable of maintaining its own atmospheric state. This allows substrate transfer between processes requiring different atmospheres without requiring the entire chamber to transform atmosphere, significantly reducing atmosphere transformation time while maintaining adaptability to different process requirements
Solution Approach 2:
The transfer chambers are pre-configured with their own atmosphere control systems, allowing them to be prepared in advance for the required atmospheric state. This preliminary preparation eliminates the need for time-consuming atmosphere transformation during substrate transfer operations, reducing loss of time while maintaining versatility
Data Source
AI summary
A substrate processing apparatus is disclosed. The substrate processing apparatus includes: a first process unit including a plurality of first process stations configured to perform a first process in a first atmosphere; a second process unit including a plurality of second process stations configured to perform a second process in a second atmosphere different from the first atmosphere; and a transformation unit between the first process unit and the second process unit. The first process unit, the transformation unit, and the second process unit are arranged in a line. The transformation unit includes a plurality of transformation stations configured to transform an atmosphere between the first atmosphere and the second atmosphere. Thus, the efficiency of processing a substrate can be improved, and the area or length in which the substrate processing apparatus is installed can be reduced.