Meaning
High-resolution X-ray inspection techniques construct three-dimensional volumetric images of internal physical structures without damaging the test specimen. Micro-tomography visualizes internal features such as voids, cracks, delamination and misaligned interconnections inside fully encapsulated semiconductor packages. In Chinese electronics manufacturing facilities and accredited quality inspection centers, this non-destructive analytical tool verifies internal structural compliance against State Administration for Market Regulation standards.
The technology visualizes spatial density differences inside solid packages but cannot determine chemical element compositions directly.
Imaging Mechanism
A micro-focus X-ray source emits radiation through a rotating sample, capturing hundreds of two-dimensional projection images from different angular orientations. Computed tomography algorithms process these shadowgraphs to reconstruct a high-density three-dimensional voxel map of the component interior. Micro-tomography achieves spatial resolutions down to sub-micron scales, enabling non-destructive identification of internal micro-bump voiding, substrate trace cracking and underfill void distributions.
Virtual cross-sectioning allows quality engineers to inspect deep structural features without introducing sample preparation artifacts. Software slice filtering isolates structural features to display internal void volume fractions accurately.
Regulatory Verification
State inspection authorities utilize non-destructive tomographic evaluations during market surveillance and customs clearance audits. Regulatory agencies confirm whether imported high-density integrated circuits match declared packaging specifications and structural integrity standards under Chinese national laws. Non-destructive scanning preserves disputed components intact for subsequent judicial review, avoiding claims of evidence tampering or sample destruction during regulatory proceedings.
Evidentiary Value
Judicial proceedings in Chinese courts rely heavily on non-destructive volumetric data during technical dispute arbitrations. Expert witnesses present micro-tomography reconstructions to demonstrate latent manufacturing defects, such as internal delamination or severe voiding, without destroying contested physical evidence. Under Chinese civil procedure rules, clear three-dimensional imaging evidence provides proof of material non-compliance, enabling judicial enforcement of contract remedies, batch replacement orders and compensatory damages.
Reconstructed structural volumes establish factual clarity in complex engineering litigation.
