Patent ID: 11948809
Assignee: DELPHI TECHNOLOGIES IP LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for underfilling an electronic circuit assembly, comprising:
mounting one or more structures to a substrate, the substrate including a silicon nitride (Si3N4) material, the one or more structures including one or more dies, the one or more dies includes a first die to be spaced apart from an edge by a first distance, the edge being an edge of the substrate or an edge of an adjacent structure among the one or more structures;
mounting one or more spacers to the substrate at one or more positions, respectively, to form one or more passages between the one or more spacers and the one or more structures, wherein the one or more spacers are soldered directly on the Si3N4 material with a soldering material that does not touch any conductive traces on the substrate, the one or more spacers including:
a first spacer mounted between the first die and the edge, wherein the first spacer is oriented such that a longer side of the first spacer extends in a direction between the first die and the edge; and
a second spacer mounted between the first die and the edge, wherein the second spacer is oriented such that a longer side of the second spacer extends in a direction between the first die and the edge;

dispensing underfill to the one or more passages; and
curing the underfill to secure the one or more structures to the substrate.