Browse Prior Art Database

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
Document File: 3 page(s) / 86K

Publishing Venue

IBM

Abstract

Disclosed is Conductive Adhesive Tape Application to Acoustic Plate for EMI in Hard Disk Drive(HDD).

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 3

Conductive Adhesive Tape Application to Acoustic Plate for EMI

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.

Fig.2 shows the example of this
Disclosure. Damping Plates(6) attached
to the Base Casting (4) through the
Non-Conductive Pressure Sensitive
Adhesive Tape (7), at the same time
Conductive Pressure Sensitive Adhesive
Tape (5) is applied in order to get
conductivity between the Base Casting
(4) and Damping Plates (6). The
Non-Conductive Pressure Sensitive is
used because of its High acoustic
damping.

1

Page 2 of 3

3

1

2

Fig.1

4

5

7

6

Fig.2

2

[This page contains 2 pictures or other non-text objects]

Page 3 of 3

3