文档介绍：DesignDesign andand CharacterizationCharacterization ofof
FlexibleFlexible CircuitCircuit forfor DiskDisk DriveDrive
ApplicationApplication
Ansoft RIDE THE WAVE Technical Seminar
Singapore, 11th September 2001
Chow Wai Kong, Application Engineer Ho Voon Yee, Application Engineer
Ansoft Corporation (Singapore Branch) 3M Asia Pacific, 3M Innovation Centre
Agenda
! Disk Drive Technology in a glance
! Ansoft EDA solutions for the HDD industry
! Flexible circuit applications
! Design and Characterization of Flex Circuit
! FSA (flex Suspension Assembly) Design
Challenges
! Virtual TDR using Ansoft EDA
! HGA (Head Gimbal Assembly) cross section
studies
ic Recording
! ic recording has just celebrated its 103rd
Birthday!
! It all begins in August 1898 when Danish Scientist
Valdemar Poulsen invented an early recording device he
called a “Telegraphone”, which introduced ic
recording technology to the world.
! Within 100 years, inventions for data storage such as
hard disk drives, tape drives, video cassettes evolved.
Major Milestones
1956 World’s First Hard Disk, 5 MB, 50 24” disks,
1965 World’s First Removable Disk Drive
1966 World’s First Ferrite Head HDD
1973 First Modern Hard Disk Design, 60MB, 14” platters
1979 World’s First Thin Film Head HDD, 8” platters
1980 First ” form factor HDD
120GB Capacity,
2000 2Gbps, Fibre 1983 First ” form factor HDD
channel Interface,
ATA RAID 1986 First Voice Coil Actuator ” Disk Drive
1988 First ” form factor HDD, puting
1990 First Drive to use MR Heads, 857MB
1991 First ” and ” form factor disk drive, PC card drives
1997 Disk Drive Capacity 4GB, ” form factor, 112Mbps
1999 Production HDDs to use GMR Heads
Hard Disk Drive Evolution
130 Hard Disk Drive Capacity
120
110 What
100 triggers
400x increase
this
90 in 10 years
growth ?
80 and still going
70 up,
60
-
50 - Vast transfer
40 and storage
30 o