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Use of converging beams for transmitting electromagnetic energy to power devices for die testing

  • US 6,184,696 B1
  • Filed: 03/23/1998
  • Issued: 02/06/2001
  • Est. Priority Date: 03/23/1998
  • Status: Expired due to Fees
First Claim
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1. A method of wirelessly activating a selected die on a wafer having a plurality of die, wherein said selected die is activated by being impacted by electromagnetic energy having at least a first energy level, the method comprising:

  • directing a first beam of electromagnetic energy toward said selected die, wherein said first beam of electromagnetic energy impacts said selected die with less than said first energy level;

    directing a second beam of electromagnetic energy toward said selected die, wherein said second beam of electromagnetic energy impacts said selected die with less than said first energy level; and

    directing said first and second beams of electromagnetic energy so that said first and second beams of electromagnetic energy at least partially overlap on said selected die, wherein said first and second beams together impact said first die with an energy level at least equal to said first energy level.

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