Learning-Based Model for Simulated Specimen Imaging
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Solution Overview
Problem
Current methods for mapping optical, electron beam, and design data for semiconductor specimens are time-consuming, expensive, and prone to errors due to differences in resolution and imaging methods, and often require physical imaging and design information, which may not be available.
Innovation Solution
A system utilizing a learning-based model to generate simulated output by mapping triangular relationships between optical images, electron beam images, and design data, allowing for the acquisition and processing of information without the need for physical imaging tools or design data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If physical imaging tools and design information are used to map optical, electron beam, and design data, then mapping accuracy is improved, but cost and time consumption increase
Solution Approach 1:
The patent creates a simulated copy of the physical imaging process through a learning-based model. The model is trained on actual optical images, electron beam images, and design data to learn the mapping relationships, then generates simulated images without requiring physical imaging tools. This copying approach eliminates time-consuming physical imaging while preserving mapping accuracy through learned patterns.
Solution Approach 2:
The patent performs preliminary training of the learning-based model using actual imaging data before actual use. During this preliminary phase, the model learns the complex mapping relationships between different imaging modalities and design data. Once trained, the model can rapidly generate simulated images without requiring time-consuming physical imaging processes during actual operation.
2Measurement precision
If physical imaging tools are used to generate optical and electron beam images, then data accuracy is improved, but cost increases
Solution Approach 1:
The patent replaces expensive physical imaging tools with a learned computational model that copies their functionality. The learning-based model is trained on actual images from optical microscopes and electron beam tools, then generates simulated images that maintain the accuracy characteristics of the original tools without requiring their physical presence, significantly reducing costs.
Solution Approach 2:
The patent introduces a learning-based model as an intermediary between available data and required imaging output. Instead of directly using expensive physical imaging tools, the model acts as a mediator that translates between different data types (optical images, electron beam images, design data) while preserving the accuracy characteristics that would otherwise require expensive equipment.
3Loss of information
If design information is required for mapping, then mapping completeness is improved, but system versatility decreases
Solution Approach 1:
The patent creates a dynamic system where the learning-based model can adapt to different input combinations. The model is trained to handle various scenarios: when design information is available, when only optical images are available, when only electron beam images are available, or when multiple data types are combined. This dynamic adaptability allows the system to maintain mapping completeness across different conditions without requiring design information in all cases.
Solution Approach 2:
The patent designs a universal learning-based model that can perform multiple mapping functions. The same model architecture handles mapping from optical images to electron beam images, from design data to images, and from images to design data. This multi-functional approach eliminates the need for design information in certain scenarios while maintaining mapping completeness, thereby increasing system versatility.
Data Source
AI summary
Methods and systems for generating simulated output for a specimen are provided. One method includes acquiring information for a specimen with one or more computer systems. The information includes at least one of an actual optical image of the specimen, an actual electron beam image of the specimen, and design data for the specimen. The method also includes inputting the information for the specimen into a learning based model. The learning based model is included in one or more components executed by the one or more computer systems. The learning based model is configured for mapping a triangular relationship between optical images, electron beam images, and design data, and the learning based model applies the triangular relationship to the input to thereby generate simulated images for the specimen.


