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Micro-emitter array based full-color micro-display

  • US 8,058,663 B2
  • Filed: 09/26/2008
  • Issued: 11/15/2011
  • Est. Priority Date: 09/26/2007
  • Status: Active Grant
First Claim
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1. A pixel for use in a multicolor illumination device, said pixel comprising:

  • a red emitter;

    a green emitter; and

    a blue emitter for generating a blue light emission;

    said red, green, and blue emitters being substantially vertically stacked one on top of the other onto a substrate, andwherein both of said green and blue emitters are caused to be transparent relative to a red light emission from said red emitter, and said blue emitter is caused to be transparent relative to a green light emission from said green emitter;

    wherein said substrate is transparent to all of said red, green, and blue light emissions; and

    wherein said pixel structure comprises;

    (i) a buffer layer deposited on said substrate;

    (ii) a first n-GaN layer deposited above said buffer layer;

    (iii) a first InGaN/GaN multi-quantum well (MQW) active region deposited above said first n-GaN layer, said first InGaN/GaN MQW active region being adapted to generate said blue emissions;

    (iv) a first p-GaN layer deposited above said first InGaN/GaN MQW active region;

    (v) an at least semi-insulative layer deposited above said first p-GaN layer;

    (vi) a second p-GaN layer deposited above said at least semi-insulative layer;

    (vii) a second InGaN/GaN MQW active region deposited above said second p-GaN layer, said second InGaN/GaN MQW active region adapted generate said green emissions;

    (viii) a second n-GaN layer deposited above said second InGaN/GaN MQW active region;

    (ix) a third InGaN/GaN MQW active region deposited above said second n-GaN layer, said third InGaN/GaN MQW active region adapted to generate said red emissions; and

    (x) a third p-GaN layer deposited above said third InGaN/GaN MQW active region.

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