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:
Feb. 20, 2024
Filed:
Mar. 29, 2022
Western Digital Technologies, Inc., San Jose, CA (US);
Irizo Naniwa, Fujisawa, JP;
Kenichi Murata, Ebina, JP;
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A hard disk drive flexure assembly includes a base layer, a conductive layer, a plurality of electrical pads over the conductive layer, and a sidewall layer including sidewalls on each side of and extending higher than a corresponding electrical pad. Pre-solder bumps are formed between the sidewalls and over each pad. Use of sidewalls prevents the pre-solder bumps from undesirably bridging to an adjacent electrical pad and forming a short circuit, which might otherwise cause head-gimbal assembly (HGA) manufacturing failures and consequent increased cost. These techniques are especially relevant with narrow, high-density, small pitch electrical pads.