Thin Film Conformality Analysis Using Positional Indicators

The patent applies preliminary action by pre-forming positional indicators (such as marker lines or reference features) on the substrate or membrane before thin film deposition. These indicators serve as predetermined reference points that enable accurate measurement of thin film conformality without requiring complex post-processing or external calibration standards. The indicators are integrated into the test structure during fabrication, allowing for direct and precise measurement of film thickness and uniformity.

The patent implements universality by designing positional indicators that serve multiple functions: they provide length scale calibration, serve as alignment references, and enable conformality measurement all within the same test structure. The indicators can be fabricated using standard semiconductor manufacturing techniques and work across different measurement methods (optical, electron microscopy, etc.), making the test structure universally applicable and reliable without requiring separate calibration standards.

The patent applies self-service by incorporating self-calibrating features directly into the test structure. The positional indicators (marker lines, reference patterns) are built-in elements that automatically provide the length scale and measurement references needed for accurate conformality analysis. This eliminates the need for external calibration standards or complex setup procedures, allowing researchers to perform accurate measurements quickly and independently without requiring specialized calibration equipment or procedures.