Deposition of phosphor on die top by stencil printing

摘要

A method for depositing a layer of phosphor-containing material on a plurality of LED dies includes disposing a template with a plurality of openings on an adhesive tape and disposing each of a plurality of LED dies in one of the plurality of openings of the template. The method also includes disposing a stencil over the template and the plurality of LED dies. The stencil has a plurality of openings configured to expose a top surface of each of the LED dies. Next, a phosphor-containing material is disposed on the exposed top surface of each the LED dies. The method further includes removing the stencil and the template.

主权项

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.