edfas.org 11 ELECTRONIC DEVICE FAILURE ANALYSIS | VOLUME 27 NO. 3 all components defined in a SIP layout through a single user interface. The Invoke System functionality is initiated by a system configuration file that defines the spatial hierarchy and alignment relationships among components within a heterogeneous SIP (Fig. 2). This configuration file is not merely a generic listing; it specifies critical transformation parameters—including translation, rotation, mirroring, and scaling—that govern how each child component is positioned relative to its parent. By encoding these spatial relationships, the configuration file enables consistent navigation and synchronized visualization across multiple databases, establishing a unified framework for correlated debug and cross-domain failure analysis. Each component’s relation is encoded using matrix transformations that allow the CAD tools to synchronize views and transfer annotations precisely. Because the structure supports nested hierarchies, it allows a component to act as a parent to its own children, facilitating scalable recursive coordination across the system. In practice, this configuration file can be manually created or adjusted if alignment data such as component offsets, pad layer positions, or known transformation parameters, are available from design teams or process flows. When this information is unavailable, some commercial CAD environments support semi-automated alignment through geometry-based pad layer matching. These methods rely on overlaying bump or pad structures at the package-die interface to infer transform relationships. By simplifying CAD setup including configuration, permissions, and startup commands, the tool reduces human error and improves efficiency. For failure analysts, it guarantees synchronized, to-scale views across domains which is critical for tasks such as signal tracing across stacked dies or correlating package traces with on-die features. DYNAMIC REAL-TIME COMPONENT OVERLAY To support advanced debugging within multi-layered, stacked-die packages, it is essential to enable visual correlation of sub-components from parent-level views. The second application implements a dynamic, remote procedure protocol (RPC)-based overlay system that aligns child die views directly into the package-level visualization environment. At runtime, the overlay script determines whether it was launched from the parent or child view, then locates the corresponding system configuration file to retrieve the appropriate transformation matrix. If launched from a child view, the script captures the active view’s field-ofinterest and transforms it into the parent layout’s coordinate space. It then commands the parent view to pan and zoom to the relevant area. If launched from a parent view, the script iterates through each child defined in the configuration file, evaluates which are spatially relevant to the current view, and triggers dynamic overlays only for those components. Overlays are generated by remotely capturing the child layout window and rendering the image with a transparent background to only retain polygons. This image is then aligned and loaded into the parent view as a transient visual layer—preserving memory efficiency and avoiding persistent database load. Fig. 2 “Invoke System” application launch pad with system-hierarchy and component relationship awareness.
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