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:
Apr. 01, 2003
Filed:
Apr. 24, 2002
Tzu-Yih Chu, San Jose, CA (US);
Ren-Kang Chiou, Fremont, CA (US);
MA Laboratories, Inc., San Jose, CA (US);
Abstract
A memory module has memory chips in stacks. The lower memory chip in a stack has pins that are soldered to pads on the module substrate. A hollowed printed-circuit board (PCB) has a hollow opening on the bottom with about the same width, length, and depth as the top cap of the lower memory chip. The hollowed PCB fits over the top cap of the lower memory chip and has lower pads on its lower surface but outside of the hollow opening. The lower pads are soldered to the top shoulders of the pins of the lower memory chip. An upper memory chip has pins that are soldered to pads on the upper surface of the hollowed PCB. The hollowed PCB has a metal trace that re-routes a second bank-select signal from a no-connect pin of the lower memory chip to a bank-select pin of the upper memory chip.