Patent ID: 11967542
Assignee: ABSOLICS INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The packaging substrate of claim 1,
wherein the core via has a first surface opening part diameter which is a diameter at an opening part in contact with the first surface and a second surface opening part diameter which is a diameter at an opening part in contact with the second surface, and
a target opening part which is a larger one between the first surface opening part diameter and the second surface opening part diameter, has an average diameter of 70 μm to 120 μm and satisfies the condition of Equation 2 below.

0.9×D90≤D50≤1.1×D10  [Equation 2]

In the Equation 2, D50 is a value corresponding to 50% in the diameter distribution of a target opening part, D90 is a value corresponding to 90% in the diameter distribution of a target opening part, and D10 is a value corresponding to 10% in the diameter distribution of a target opening part.