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System and method for the fluidic assembly of micro-LEDs utilizing negative pressure

  • US 10,535,640 B2
  • Filed: 08/31/2017
  • Issued: 01/14/2020
  • Est. Priority Date: 10/31/2014
  • Status: Active Grant
First Claim
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1. An emissive panel comprising:

  • an insulating layer comprising a top surface and a back surface;

    a dielectric layer overlying the insulating layer top surface, patterned to form a first plurality of wells, each well comprising a bottom surface formed on an exposed region of the insulating layer top surface, well sidewalls formed in the dielectric layer, a first electrical interface formed on the well bottom surface, and a first electrically conductive pressure channel formed between the first electrical interface and the insulating layer back surface;

    a control matrix comprising an electrically conductive first matrix of traces formed on a surface selected from a surface group consisting of the insulating layer top surface and the insulating layer bottom surface, and wherein an electrically conductive second matrix of traces is formed on an unselected surface from the surface group, where each first electrically conductive pressure channel is electrically connected to the first matrix;

    a first plurality of surface mount emissive elements populating the wells, each emissive element comprising;

    a top surface overlying a corresponding well bottom surface;

    a bottom surface; and

    ,a first electrical contact formed on the emissive element top surface and connected to a corresponding well first electrical interface.

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