Inorganic Printed LEDs for Wearable Technology

Claypole, James; Holder, Alexander; McCall, Caitlin; Winters, Amy; Ray, William; Claypole, Timothy

doi:10.3390/proceedings2019032024

Conference Paper/Proceeding/Abstract 959 views

Inorganic Printed LEDs for Wearable Technology

James Claypole, Alexander Holder, Caitlin McCall, Amy Winters, William Ray, Timothy Claypole

International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles, Pages: 150 - 155

Swansea University Authors: James Claypole, Alexander Holder, Caitlin McCall, Timothy Claypole

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DOI (Published version): 10.3390/proceedings2019032024

Abstract

A new form of inorganic printed electronics has been developed that allows for high speed production of solid-state lighting on flexible substrates. Light emitting diodes (LED) become more efficient as their size is decreased. However, the difficulties in making the electrical connection to micro LE...

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Published in:	International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles
ISBN:	978-3-948039-01-1
ISSN:	2409-4021
Published:	Basel Switzerland MDPI 2020
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa53314

first_indexed	2020-01-20T19:29:44Z
last_indexed	2023-03-18T04:06:44Z
id	cronfa53314
recordtype	SURis
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Light emitting diodes (LED) become more efficient as their size is decreased. However, the difficulties in making the electrical connection to micro LEDs has previously prevented these benefits being exploited outside the laboratory. Standard Indium gallium nitride (InGaN) film, grown on a defined substrate (heteroepitaxy), was fabricated into micro LEDs (approx. 30 µm) and dispersed in a carrier fluid to form an ink, which can then be printed using established printing technologies. During printing and curing, the geometry of the individual micro LEDs causes them to orientate into a single preferential direction. Connections can then be made via further printed layers of conductive and dielectric ink to create flexible lamps consisting of areas of discrete LED. These lamps have low power consumption and high light output making them ideal for incorporating into garments and for packaging. The “Thunderstorm” dress (a Rainbow Winters project) was developed for the “Wired to wear” exhibition in the Chicago Museum of Science and Industry to demonstrate the potential of this technology. The concept was to turn the wearer into a living representation of a thunderstorm. The concept had previously been realised using electroluminescent elements (EL) to create a lightning flash in the panels of the dress. However, this required the wearer to carry high voltage devices, bulky electronics and heavy batteries. Instead, using inorganic printed LEDs afforded the potential to create a truly wearable piece of haute couture, using low voltages, miniature electronics and small batteries. The work reported here describes the fabrication technique used to create the micro LED lamps and the issues related to their integration into a piece of wearable technology. 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spelling	2023-03-17T15:21:27.2211395 v2 53314 2020-01-20 Inorganic Printed LEDs for Wearable Technology 0e33dfb4c8d099d6648af8812a472a05 James Claypole James Claypole true false cdc0d0fcecfcd72ca00342951c94f0ae Alexander Holder Alexander Holder true false 733922ffa8c6650c4eea85ced814a72a Caitlin McCall Caitlin McCall true false 7735385522f1e68a8775b4f709e91d55 Timothy Claypole Timothy Claypole true false 2020-01-20 ACEM A new form of inorganic printed electronics has been developed that allows for high speed production of solid-state lighting on flexible substrates. Light emitting diodes (LED) become more efficient as their size is decreased. However, the difficulties in making the electrical connection to micro LEDs has previously prevented these benefits being exploited outside the laboratory. Standard Indium gallium nitride (InGaN) film, grown on a defined substrate (heteroepitaxy), was fabricated into micro LEDs (approx. 30 µm) and dispersed in a carrier fluid to form an ink, which can then be printed using established printing technologies. During printing and curing, the geometry of the individual micro LEDs causes them to orientate into a single preferential direction. Connections can then be made via further printed layers of conductive and dielectric ink to create flexible lamps consisting of areas of discrete LED. These lamps have low power consumption and high light output making them ideal for incorporating into garments and for packaging. The “Thunderstorm” dress (a Rainbow Winters project) was developed for the “Wired to wear” exhibition in the Chicago Museum of Science and Industry to demonstrate the potential of this technology. The concept was to turn the wearer into a living representation of a thunderstorm. The concept had previously been realised using electroluminescent elements (EL) to create a lightning flash in the panels of the dress. However, this required the wearer to carry high voltage devices, bulky electronics and heavy batteries. Instead, using inorganic printed LEDs afforded the potential to create a truly wearable piece of haute couture, using low voltages, miniature electronics and small batteries. The work reported here describes the fabrication technique used to create the micro LED lamps and the issues related to their integration into a piece of wearable technology. The lamps could be driven in such a way as to create a more realistic flash compared to the EL version. Conference Paper/Proceeding/Abstract International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles 150 155 MDPI Basel Switzerland 978-3-948039-01-1 2409-4021 printed electronics; inorganic LEDs; wearable technology 27 3 2020 2020-03-27 10.3390/proceedings2019032024 http://dx.doi.org/10.3390/proceedings2019032024 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University 2023-03-17T15:21:27.2211395 2020-01-20T15:52:53.5151763 Faculty of Science and Engineering James Claypole 1 Alexander Holder 2 Caitlin McCall 3 Amy Winters 4 William Ray 5 Timothy Claypole 6
title	Inorganic Printed LEDs for Wearable Technology
spellingShingle	Inorganic Printed LEDs for Wearable Technology James Claypole Alexander Holder Caitlin McCall Timothy Claypole
title_short	Inorganic Printed LEDs for Wearable Technology
title_full	Inorganic Printed LEDs for Wearable Technology
title_fullStr	Inorganic Printed LEDs for Wearable Technology
title_full_unstemmed	Inorganic Printed LEDs for Wearable Technology
title_sort	Inorganic Printed LEDs for Wearable Technology
author_id_str_mv	0e33dfb4c8d099d6648af8812a472a05 cdc0d0fcecfcd72ca00342951c94f0ae 733922ffa8c6650c4eea85ced814a72a 7735385522f1e68a8775b4f709e91d55
author_id_fullname_str_mv	0e33dfb4c8d099d6648af8812a472a05_*_James Claypole cdc0d0fcecfcd72ca00342951c94f0ae__Alexander Holder 733922ffa8c6650c4eea85ced814a72a__Caitlin McCall 7735385522f1e68a8775b4f709e91d55_*_Timothy Claypole
author	James Claypole Alexander Holder Caitlin McCall Timothy Claypole
author2	James Claypole Alexander Holder Caitlin McCall Amy Winters William Ray Timothy Claypole
format	Conference Paper/Proceeding/Abstract
container_title	International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles
container_start_page	150
publishDate	2020
institution	Swansea University
isbn	978-3-948039-01-1
issn	2409-4021
doi_str_mv	10.3390/proceedings2019032024
publisher	MDPI
college_str	Faculty of Science and Engineering
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hierarchy_top_title	Faculty of Science and Engineering
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hierarchy_parent_title	Faculty of Science and Engineering
url	http://dx.doi.org/10.3390/proceedings2019032024
document_store_str	0
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description	A new form of inorganic printed electronics has been developed that allows for high speed production of solid-state lighting on flexible substrates. Light emitting diodes (LED) become more efficient as their size is decreased. However, the difficulties in making the electrical connection to micro LEDs has previously prevented these benefits being exploited outside the laboratory. Standard Indium gallium nitride (InGaN) film, grown on a defined substrate (heteroepitaxy), was fabricated into micro LEDs (approx. 30 µm) and dispersed in a carrier fluid to form an ink, which can then be printed using established printing technologies. During printing and curing, the geometry of the individual micro LEDs causes them to orientate into a single preferential direction. Connections can then be made via further printed layers of conductive and dielectric ink to create flexible lamps consisting of areas of discrete LED. These lamps have low power consumption and high light output making them ideal for incorporating into garments and for packaging. The “Thunderstorm” dress (a Rainbow Winters project) was developed for the “Wired to wear” exhibition in the Chicago Museum of Science and Industry to demonstrate the potential of this technology. The concept was to turn the wearer into a living representation of a thunderstorm. The concept had previously been realised using electroluminescent elements (EL) to create a lightning flash in the panels of the dress. However, this required the wearer to carry high voltage devices, bulky electronics and heavy batteries. Instead, using inorganic printed LEDs afforded the potential to create a truly wearable piece of haute couture, using low voltages, miniature electronics and small batteries. The work reported here describes the fabrication technique used to create the micro LED lamps and the issues related to their integration into a piece of wearable technology. The lamps could be driven in such a way as to create a more realistic flash compared to the EL version.
published_date	2020-03-27T04:52:09Z
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score	11.390808

Inorganic Printed LEDs for Wearable Technology

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