Real-Time Array Control for Maskless Lithography Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current maskless lithography processes face challenges in real-time management of image projection systems, particularly in detecting and synchronizing the location and orientation of substrates, leading to misalignments and inefficiencies in patterning large area substrates like those used in LCD manufacturing.
Innovation Solution
A real-time software and array control application platform that coordinates and controls multiple image projection systems using a central processor to detect substrate location and orientation, activate, and align them with the substrate, ensuring precise synchronization and alignment during maskless lithography patterning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple image projection systems are used to pattern large area substrates, then productivity and coverage area are improved, but synchronization and alignment precision deteriorate due to real-time coordination challenges
Solution Approach 1:
The patent divides the large area substrate processing into multiple zones, with each image projection system responsible for a specific zone. The substrate is segmented into multiple regions that can be processed simultaneously by different projection systems, allowing large area coverage while maintaining precision through localized control.
Solution Approach 2:
The patent implements dynamic real-time coordination of multiple image projection systems through a central controller that continuously monitors and adjusts the position and orientation of each system. This dynamic adaptation allows the system to maintain precise alignment despite substrate movement or positioning variations, resolving the contradiction between multi-system coordination and alignment precision.
2Manufacturing precision
If real-time detection and coordination of multiple image projection systems is implemented, then alignment precision is improved, but device complexity and control system complexity increase
Solution Approach 1:
The patent employs a universal control architecture where a single central controller performs multiple functions including detecting substrate position, coordinating multiple image projection systems, and adjusting alignment parameters. This multi-functional approach reduces overall system complexity by consolidating control functions rather than requiring separate specialized systems for each function.
Solution Approach 2:
The patent introduces a central controller as an intermediary between the substrate positioning system and the multiple image projection systems. This intermediary coordinates all interactions, simplifies the control architecture by centralizing decision-making, and reduces the complexity that would arise from direct peer-to-peer coordination between multiple projection systems.
3Device complexity
If traditional maskless lithography processes are used without real-time coordination software, then device complexity is reduced, but manufacturing precision and productivity deteriorate due to misalignments and inefficiencies
Solution Approach 1:
The patent implements continuous real-time coordination and synchronization of multiple image projection systems during the patterning process. The control system continuously monitors substrate position and projection system alignment, making real-time adjustments to maintain optimal performance throughout the entire processing cycle, thereby maximizing productivity without requiring excessive system complexity.
Data Source
AI summary
A real time software and array control software application platform which maintains the ability to manage the synchronization between substrate alignments and image projection systems during maskless lithography patterning in a manufacturing process is disclosed. The application coordinates and controls the image projection systems such that discrepancies in and misalignments of the substrate may be determined and accounted for in real time. The image projection systems may run in parallel and may be controlled by a central processor.