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Deposition of phosphor on die top by stencil printing

  • US 8,993,358 B2
  • Filed: 12/28/2011
  • Issued: 03/31/2015
  • Est. Priority Date: 12/28/2011
  • Status: Active Grant
First Claim
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1. A method for depositing a layer of phosphor-containing material on a plurality of LED (light-emitting diode) dies, the method comprising:

  • disposing a template with a plurality of openings on an adhesive tape;

    after disposing the template on the adhesive tape, disposing each of the plurality of LED dies directly on the adhesive tape through a respective one of the plurality of openings of the template;

    after disposing the LED dies on the adhesive tape, disposing a stencil over the template and the plurality of LED dies, the stencil having a plurality of openings configured to expose a top surface of each of the LED dies;

    after disposing the stencil, depositing the phosphor-containing material on the exposed top surface of each of the LED dies;

    after depositing the phosphor-containing material, removing the stencil; and

    removing the template from the adhesive tape.

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