Patent ID: 11923332
Assignee: MICRON TECHNOLOGY, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device for direct chip attachment, comprising:
a substrate;
a semiconductor die having a conductive pillar extending from a front side, the semiconductor die electrically coupled to the substrate through the conductive pillar, and the front side of the semiconductor die being spaced apart from the substrate by a gap; and
a capillary flow structure having first and second elongate flow elements projecting from the front side toward the substrate, the first and second elongate flow elements being laterally spaced apart from each other by a first width configured to induce capillary flow of an underfill material along a length of the first and second elongate flow elements,
wherein the first and second elongate flow elements directly contact the substrate when the semiconductor die is electrically coupled to the substrate.