Patent ID: 11596058

Abstract:
Laminate structures and configurations of fiducials for laminates structures for electronic devices are disclosed. Fiducials are formed in laminate structures to provide increased visibility and contrast, thereby improving detection of the fiducials with optical detection equipment of automated machines commonly used in the electronics industry. Fiducials are disclosed that are defined by openings in laminate structures that extend to depths within the laminate structures to provide sufficient contrast. Openings for fiducials may be arranged to extend through multiple metal layers and dielectric layers of the laminate structures. The fiducials may be formed by laser drilling or other subtractive processing techniques. Fiducials as disclosed herein may be coated with additional layers or coatings, such as a metal coating that includes an electromagnetic shield for electronic devices, and the fiducials are configured with sufficient visibility and contrast to remain detectable through the additional layers or coatings.