Display Deposition Scheduling to Limit Simultaneous Cleaning
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Solution Overview
Problem
The challenge in manufacturing display apparatuses lies in efficiently managing the deposition and cleaning processes of deposition portions to minimize simultaneous cleaning operations, which are often required at specific intervals.
Innovation Solution
An apparatus with a controller that generates initial schedules for deposition and cleaning processes, adjusts these schedules to ensure no more than a certain number of deposition portions are cleaning simultaneously, and modifies the schedule if necessary to meet this condition, thereby optimizing the workflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If each deposition portion performs deposition process A times and then cleaning process once according to initial schedule, then productivity is improved through systematic scheduling, but the number of deposition portions cleaning simultaneously may exceed limit B causing process coordination problems
Solution Approach 1:
The schedule is made dynamic by allowing different deposition portions to have different numbers of deposition processes (A-1, A-2, etc.) before cleaning, rather than a fixed uniform schedule. This dynamic adjustment enables flexible coordination to prevent excessive simultaneous cleaning operations while maintaining overall productivity.
Solution Approach 2:
The parameter A (number of deposition processes before cleaning) is changed differently for different deposition portions. Some portions perform A-1 times, others A-2 times, etc., before cleaning. This parameter variation allows distribution of cleaning operations across different time periods, reducing peak simultaneous cleaning demand.
2Ease of operation
If multiple deposition portions clean simultaneously according to fixed schedule, then ease of operation is maintained through standardized scheduling, but loss of time increases due to idle capacity and potential rework
Solution Approach 1:
The schedule is designed in advance with predetermined different numbers of deposition processes (A-1, A-2, etc.) for different deposition portions before cleaning. This preliminary planning distributes cleaning operations to avoid simultaneous cleaning, ensuring continuous productive use of all deposition portions without requiring complex real-time adjustments.
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 approach reduces the number of deposition portions cleaning simultaneously, enhancing process efficiency and ensuring compliance with predefined cleaning intervals.
Implementation Method 1
a deposition process of depositing a deposition material on a display substrate
Implementation Method 2
a cleaning process of cleaning an inside of the plurality of deposition portions
Data Source
AI summary
An apparatus for manufacturing a display apparatus includes a process portion including a plurality of deposition portions which perform a deposition process of depositing a deposition material on a display substrate and a cleaning process of cleaning an inside, and a controller which controls the process portion.