Patent ID: 11961743
Assignee: ZHUHAI ACCESS SEMICONDUCTOR CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The substrate manufacturing method for realizing three-dimensional packaging of claim 1, wherein the manufacturing method of the base plate comprises:
preparing a double-sided copper foil substrate, and manufacturing a third seed layer on the double-sided copper foil substrate;
processing the first sidewall pad and the first through-hole pillar on the double-sided copper foil substrate with the third seed layer;
manufacturing a photosensitive shielding layer on the double-sided copper foil substrate with the first sidewall pad and the first through-hole pillar to form the cavity, and electroplating the anti-etching barrier layer in the cavity;
electroplating on the anti-etching barrier layer to form the first metal block;
removing the photosensitive shielding layer and laminating a dielectric material to obtain the dielectric material layer; and
thinning and then dividing the dielectric material layer into plates to obtain the base plate.