Adaptive Photomask Configurable Apertures Tolerance
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Solution Overview
Problem
Traditional photomasking techniques fail to accommodate manufacturing tolerances, leading to mismatched patterns on consumer products, which are cosmetically unappealing due to fixed photomask patterns not accounting for dimensional variations in surface features.
Innovation Solution
The use of adaptive photomasks with configurable apertures that adjust size and shape based on dimensional data to create custom patterns for each part, ensuring precise alignment of treated and untreated regions with feature boundaries, accommodating manufacturing tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional fixed photomask patterns are used, then manufacturing process simplicity is maintained, but manufacturing precision deteriorates due to mismatched patterns not accommodating dimensional variations
Solution Approach 1:
The photomask system transitions from a static fixed pattern to a dynamic configurable aperture system that can adjust its transmissive portions based on measured feature dimensions. The aperture configuration is modified in real-time to accommodate manufacturing tolerances, allowing the same photomask to adapt to dimensional variations across different parts while maintaining precise pattern alignment.
Solution Approach 2:
The photomask system changes its operational parameters by adjusting the configuration of transmissive portions based on input dimensional data. The aperture size, shape, and position are dynamically modified to match the actual measured dimensions of surface features, enabling precise pattern alignment despite variations in manufacturing tolerances.
2Adaptability or versatility
If fixed photomask patterns are used, then device complexity is minimized, but adaptability deteriorates as the system cannot accommodate dimensional differences between parts
Solution Approach 1:
A single photomask device performs multiple functions by dynamically reconfiguring its aperture pattern. The same photomask can accommodate different dimensional variations across multiple parts through programmable aperture adjustments, eliminating the need for multiple fixed photomasks while maintaining adaptability to manufacturing tolerances.
Solution Approach 2:
The photomask system automatically adjusts its aperture configuration based on measured dimensional data from each part, enabling self-adaptation to manufacturing variations without requiring manual intervention or complex external control systems.
3Manufacturing precision
If configurable apertures are used to adjust for each part, then manufacturing precision is improved, but productivity deteriorates due to additional measurement and adjustment steps
Solution Approach 1:
Dimensional measurements of surface features are performed before the photomasking process, allowing the aperture configuration to be pre-adjusted based on actual part dimensions. This preliminary measurement and configuration step ensures that when photomasking occurs, the aperture is already optimized for precise alignment, reducing in-process adjustments.
Solution Approach 2:
The traditional mechanical photomask adjustment mechanism is replaced with a programmable aperture system that can be dynamically reconfigured through software control. This substitution allows for rapid aperture pattern changes without physical mask changes or complex mechanical adjustments, improving process efficiency while maintaining precision.
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 ensures consistently aligned and aesthetically pleasing boundaries between masked and unmasked portions on consumer products, improving the cosmetic appeal by dynamically adjusting photomask patterns to match the specific dimensions of individual parts.
Implementation Method 1
When in a transmissive state, each of the selectively transmissive elements allows light to pass therethrough to activate a corresponding portion of a photoresist layer disposed on the at least one substrate
Data Source
AI summary
The embodiments described herein relate to methods, devices, and systems for masking a substrate using a photomasking process. An adaptive photomask configured to generate a photomasking pattern in accordance with dimensions of a surface feature on substrate is described. The adaptive photomask can be used to create customized photomask patterns for individual substrates. Methods and devices described herein can be used in manufacturing processes where similar parts having slight differences due to built-in tolerances are manufactured. Methods and a devices described herein can also be used in manufacture processes involving masking of three-dimensional portions of a part. A photomasking system that includes a translational mechanism for scanning a substrate surface is described.