Patent ID: 8058663

Claim:
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, and wherein 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.