Stray field shielding structure for semiconductors

  • US 7,205,643 B2
  • Filed: 03/08/2005
  • Issued: 04/17/2007
  • Est. Priority Date: 03/08/2005
  • Status: Expired due to Fees
First Claim
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1. A stray field shielding structure for die attaching onto a magnetorestrictive random access memory (MRAM) chip to prevent loss of memory due magnetic stray fields comprising:

  • a layer of individual magnetic shielding material adapted for placement by pick and place machines and/or die bonders,said magnetic shielding material being cut to a precise desired size by etching to remove all burrs and debris in the streets between blocks of shielding material, andan attaching layer for bonding said magnetic material to individual die.

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