Direct integration of micro-LEDs and a SPAD detector on a silicon CMOS chip for data communications and time-of-flight ranging

J. F. C. Carreira, A. D. Griffiths, E. Xie, B. J. E. Guilhabert, J. Herrnsdorf, R. K. Henderson, E. Gu, M. J. Strain, M. D. Dawson

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)
49 Downloads (Pure)

Abstract

We present integration of singulated micron-sized light emitting diodes (micro-LEDs) directly onto a silicon CMOS drive chip using a transfer printing method. An 8x8 micro-LED device array with individual control over each pixel is demonstrated with modulation bandwidths up to 50 MHz, limited by the large modulation depth of the driver chip. The 2 kHz frame rate CMOS driver also incorporates a Single Photon Avalanche Diode device thus allowing detection and transmission functionality on a single integrated chip. Visible light communications at data rates up to 1 Mbps, and time-of-flight ranging with cm-scale resolution are demonstrated using this hybrid integrated system.
Original languageEnglish
Pages (from-to)6909-6917
Number of pages9
JournalOptics Express
Volume28
Issue number5
DOIs
Publication statusPublished - 2 Mar 2020

Keywords

  • micron-sized light emitting diodes
  • micro-LEDs
  • silicon CMOS drive chip
  • transfer printing method

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