Patent ID: 11956898
Assignee: APPLE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A printed circuit board, comprising:
core layers, wherein the core layers include at least one core dielectric layer, a first core conductive material layer proximate an upper vertical surface of the core layers, and a second core conductive material layer proximate a lower vertical surface of the core layers;
a plurality of build-up layers coupled to the core layer, wherein the build-up layers include at least one build-up dielectric layer and at least one build-up conductive material layer;
a plurality of overlapping vias through at least one of the build-up layers, wherein the plurality of overlapping vias extend from a first horizontal position of a first via connected to the build-up layer vertically above the overlapping vias to a second horizontal position of a second via connected to the build-up layer vertically below the overlapping vias, the second horizontal position being horizontally displaced from the first horizontal position, wherein the plurality of overlapping vias form a trench through the at least one build-up layer;
a buried via throught the core layers; and
a third conductive material filling the plurality of overlapping vias and the buried via, wherein the third conductive material filling the buried via has an upper vertical surface vertically above the first core conductive material layer of the core layers and a lower vertical surface vertically below the second core conductive material of the core layers.