The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2018
Filed:
Mar. 29, 2017
Qualcomm Incorporated, San Diego, CA (US);
Pratyush Kamal, San Diego, CA (US);
Kambiz Samadi, San Diego, CA (US);
Jing Xie, San Diego, CA (US);
Yang Du, Carlsbad, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Power distribution networks in a three-dimensional (3D) integrated circuit (IC) (3DIC) are disclosed. In one aspect, a voltage drop within a power distribution network in a 3DIC is reduced to reduce unnecessary power dissipation. In a first aspect, interconnect layers devoted to distribution of power within a given tier of the 3DIC are provided with an increased thickness such that a resistance of such interconnect layers is reduced relative to previously used interconnect layers and also reduced relative to other interconnect layers. Further voltage drop reductions may also be realized by placement of vias used to interconnect different tiers, and particularly, those vias used to interconnect the thickened interconnect layers devoted to the distribution of power. That is, the number, position, and/or arrangement of the vias may be controlled in the 3DIC to reduce the voltage drop.