Title :
Individually Addressable AlInGaN Micro-LED Arrays With CMOS Control and Subnanosecond Output Pulses
Author :
McKendry, Jonathan J D ; Rae, Bruce R. ; Gong, Zheng ; Muir, Keith R. ; Guilhabert, Benoit ; Massoubre, David ; Gu, Erdan ; Renshaw, David ; Dawson, Martin D. ; Henderson, Robert K.
Author_Institution :
Inst. of Photonics, Univ. of Strathclyde, Glasgow
fDate :
6/15/2009 12:00:00 AM
Abstract :
We report the fabrication and characterization of an ultraviolet (370 nm) emitting AlInGaN-based micro-light- emitting diode (micro-LED) array integrated with complementary metal-oxide-semiconductor control electronics. This configuration allows an 8 × 8 array of micro-LED pixels, each of 72-mum diameter, to be individually addressed. The micro-LED pixels can be driven in direct current (dc), square wave, or pulsed operation, with linear feedback shift registers (LFSRs) allowing the output of the micro-LED pixels to mimic that of an optical data transmitter. We present the optical output power versus drive current characteristics of an individual pixel, which show a micro-LED output power of up to 570 muW in dc operation. Representative optical pulse trains demonstrating the micro-LEDs driven in square wave and LFSR modes, and controlled optical pulsewidths from 300 ps to 40 ns are also presented.
Keywords :
CMOS integrated circuits; III-V semiconductors; aluminium compounds; indium compounds; integrated optoelectronics; light emitting diodes; shift registers; AlInGaN; CMOS control; complementary metal-oxide-semiconductor control electronics; controlled optical pulsewidth; linear feedback shift register; microLED array pixel; microLED arrays; microlight emitting diode; optical data transmitter; optical pulse train; subnanosecond output pulse; GaN; complementary metal–oxide–semiconductor (CMOS); micro-light-emitting diodes (micro-LEDs); microdisplays;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2019114
