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Conductive Adhesive Tape Application to Acoustic Plate for EMI

IP.com Disclosure Number: IPCOM000015429D
Original Publication Date: 2002-Feb-17
Included in the Prior Art Database: 2003-Jun-20

Publishing Venue

IBM

Abstract

Disclosed is Conductive Adhesive Tape Application to Acoustic Plate for EMI in Hard Disk Drive(HDD). Fig.1 shows an example of attached Damping Plate(3) to Base Casting (2) of Hard Disk Drive. Damping Plate(3) is mainly attached on the Base Casting in order to reduce the acoustic noise of HDD by using Pressure Sensitive Adhesive Tape. At the same time, Main Card (1) is also fixed to Base Casting (2) on the same side as Damping Plate. As the Damping Plate (3) is fixed by Non-conductive Pressure Sensitive Adhesive Tape and the Damping Plate is made of Metal, Damping Plate is floating form the electric ground of the HDD. As a result of this floating, Damping Plate functions as an antenna in front of Card. So the Damping Plate gains the Electromagnetic Interference(EMI) level in front of HDD at the Damping Plate Side. This disclosure proposes to apply Conductive type Pressure sensitive Adhesive Tape to attach Damping Plate.