公开(公告)号：CA2704683A1

公开(公告)日：2010-08-12

申请号：CA2704683

申请日：2010-05-28

Applicant: IBM CANADA

Inventor： BLANDER ALEXANDRE ,  BEAUMIER MARTIN ,  GAGNON PASCALE ,  GAYNES MICHAEL A ,  GIGUERE ERIC ,  SALVAS ERIC ,  TOUSIGNANT LUC

IPC: H01L23/06 ,  H01L23/58

Abstract: An apparatus for reducing EMI at the micro-electronic-component level includes a substrate having a ground conductor integrated therein. A micro-electronic component such as an integrated circuit is mounted to the substrate. An electrically conductive lid is mounted to the substrate, thereby forming a physical interface with the substrate. The electrically conductive lid substantially covers the micro-electronic component. A conductive link is provided to create an electrical connection between the electrically conductive lid and the ground conductor at the physical interface.

公开(公告)号：CA2552623A1

公开(公告)日：2008-01-20

申请号：CA2552623

申请日：2006-07-20

Applicant: IBM CANADA

Inventor： SYLVESTRE JULIEN ,  BLANDER ALEXANDRE ,  SAVARD CARL ,  BRASSARD RICHARD

IPC: G01B21/08 ,  G01B17/02

Abstract: A method of using acoustic signals in the form of waves or pulses to non- destructively measure the thickness of a bonding layer sandwiched between and bonding together overlying and underlying materials different from the bonding layer especially when th e thickness of the bonding layer is so small that the features (maxima, minima, time position)o f the echo from the interface of the bonding layer and the overlying material is indistinguishable, i.e., not independently observable from the features (maxima, minima, time position) o f echo from the interface of the bonding layer and the underlying material, is achieved by applying an acoustic wave to the layered body that will cause a primary echo to be reflected from the interface between the bonding material and the top or overlying material and cause a secondary echo to be reflected from the interface of the bonding material and the underlying material; detecting and digitizing the echoes to generate a digital time series containing both echoes, processing the digital time series to remove any noise there from; digitally filtering the time series using a filter matched to the primary echo; locating the time position and amplitude of the maximum of the filtered time series; time-translating and scaling the primary echo using th e time position and amplitude obtained from said localization; subtracting said transformed mode l of said primary echo from said time series to obtain a cleaned time series without the prima ry echo; digitally filtering said cleaned time series using a filter matched to the secondary echo; locating the time position of the maximum of said secondary echo filtered time series; determining the flight time, i.e., the time used by the acoustic wave or pulse to travel back and forth i n the bonding layer from the difference between the time locations of the primary and secondary echoes from the time positions of the maxima of the two filtered time series; and determinin g the thickness of the bonding layer of said body which is equal to one half of the measured flight time multiplied by the velocity of the acoustic wave or pulse in the bonding layer.