US 12,424,599 B2
Full-color light-emitting diode micro-display and the fabrication method thereof
Kei May Lau, Hong Kong (CN); Xu Zhang, Hong Kong (CN); Peian Li, Hong Kong (CN); and Longheng Qi, Hong Kong (CN)
Assigned to The Hong Kong University of Science and Technology, Hong Kong (CN)
Filed by The Hong Kong University of Science and Technology, Hong Kong (CN)
Filed on Nov. 1, 2022, as Appl. No. 18/051,538.
Claims priority of provisional application 63/314,481, filed on Feb. 28, 2022.
Prior Publication US 2023/0275074 A1, Aug. 31, 2023
Int. Cl. H01L 25/16 (2023.01); H01L 23/00 (2006.01); H10H 29/14 (2025.01)
CPC H01L 25/167 (2013.01) [H01L 24/13 (2013.01); H01L 24/16 (2013.01); H01L 24/29 (2013.01); H01L 24/73 (2013.01); H01L 24/81 (2013.01); H01L 24/83 (2013.01); H01L 24/92 (2013.01); H10H 29/142 (2025.01); H01L 24/32 (2013.01); H01L 2224/13023 (2013.01); H01L 2224/13109 (2013.01); H01L 2224/13111 (2013.01); H01L 2224/13144 (2013.01); H01L 2224/13147 (2013.01); H01L 2224/16145 (2013.01); H01L 2224/2919 (2013.01); H01L 2224/32145 (2013.01); H01L 2224/73204 (2013.01); H01L 2224/81039 (2013.01); H01L 2224/832 (2013.01); H01L 2224/92125 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A full-color light-emitting diode (LED) micro-display comprising a plurality of pixels, each pixel comprising:
a first LED comprising a blue/green dual wavelength LED structure for emitting blue light;
a second LED comprising the blue/green dual wavelength LED structure for emitting green light; and
a third LED comprising a monochrome red LED structure for emitting red light, wherein:
the blue/green dual wavelength LED structure further comprises a dual wavelength multiple quantum wells (MQWs) active region of a first material with two emission peaks, wherein the dual wavelength MQWs active region comprises a first quantum well stack, a second quantum well stack, and a third quantum well stack;
the first quantum well stack and the third quantum well stack are configured for generating the blue light, and the second quantum well stack is configured for generating the green light; and
the monochrome red LED structure further comprises a red emitting MQWs active region of a second material with a second emission peak.