Stretchable LED matrix display

Arttu Huttunen; Tuomas Happonen; Arttu Korhonen; Kaisa-Leena Väisänen; Belal Amin; Markus Tuomikoski; Teemu Alajoki

doi:10.1109/ESTC48849.2020.9229881

Stretchable LED matrix display

Arttu Huttunen, Tuomas Happonen, Arttu Korhonen, Kaisa-Leena Väisänen, Belal Amin, Markus Tuomikoski, Teemu Alajoki

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Stretchable electronics offers a new way for making wearable devices that are unobtrusive and conform to the user's body shape. Electronics manufactured on a stretchable substrate allows integration of electronics into e.g. clothing, disposable patches and wearable accessories while retaining user comfort. This paper presents a LED matrix display manufactured on thermoplastic polyurethane. A 5x17 LED matrix was fabricated with bare die semiconductor LED chips and a reference device with chip scale packaged components. Reliability under stretching is investigated with and without protective measures, namely support adhesive and laminated cover layer. It was found that the bare die samples could withstand no more than 6% strain whereas the packaged components could reach 18%. In a cyclic stretch test the best performance was recorded from a sample laminated with pressure sensitive adhesive, again chip scaled components faring better that the bare dies.

Original language	English
Title of host publication	2020 IEEE 8th Electronics System-Integration Technology Conference (ESTC)
Publisher	IEEE Institute of Electrical and Electronic Engineers
Number of pages	5
ISBN (Electronic)	978-1-7281-6293-5
ISBN (Print)	978-1-7281-6294-2
DOIs	https://doi.org/10.1109/ESTC48849.2020.9229881
Publication status	Published - Sept 2020
MoE publication type	A4 Article in a conference publication
Event	8th IEEE Electronics System-Integration Technology Conference, ESTC 2020: Online - Virtual, Tonsberg, Vestfold, Norway Duration: 15 Sept 2020 → 18 Sept 2020

Conference

Conference	8th IEEE Electronics System-Integration Technology Conference, ESTC 2020
Country/Territory	Norway
City	Tonsberg, Vestfold
Period	15/09/20 → 18/09/20

Keywords

Bare die
Die attach
LED matrix
Reliability
Stretch
TPU
Wearable electronics

Access to Document

10.1109/ESTC48849.2020.9229881

Cite this

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title = "Stretchable LED matrix display",

abstract = "Stretchable electronics offers a new way for making wearable devices that are unobtrusive and conform to the user's body shape. Electronics manufactured on a stretchable substrate allows integration of electronics into e.g. clothing, disposable patches and wearable accessories while retaining user comfort. This paper presents a LED matrix display manufactured on thermoplastic polyurethane. A 5x17 LED matrix was fabricated with bare die semiconductor LED chips and a reference device with chip scale packaged components. Reliability under stretching is investigated with and without protective measures, namely support adhesive and laminated cover layer. It was found that the bare die samples could withstand no more than 6% strain whereas the packaged components could reach 18%. In a cyclic stretch test the best performance was recorded from a sample laminated with pressure sensitive adhesive, again chip scaled components faring better that the bare dies.",

keywords = "Bare die, Die attach, LED matrix, Reliability, Stretch, TPU, Wearable electronics",

author = "Arttu Huttunen and Tuomas Happonen and Arttu Korhonen and Kaisa-Leena V{\"a}is{\"a}nen and Belal Amin and Markus Tuomikoski and Teemu Alajoki",

note = "Funding Information: This study was done under project ELASTRONICS ? Enabling the future of wearable electronics. The project has received funding from Business Finland (Grant No. 3087/31/2018). Publisher Copyright: {\textcopyright} 2020 IEEE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 8th IEEE Electronics System-Integration Technology Conference, ESTC 2020 : Online ; Conference date: 15-09-2020 Through 18-09-2020",

year = "2020",

month = sep,

doi = "10.1109/ESTC48849.2020.9229881",

language = "English",

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}

Huttunen, A , Happonen, T, Korhonen, A, Väisänen, K-L, Amin, B, Tuomikoski, M & Alajoki, T 2020, Stretchable LED matrix display. in 2020 IEEE 8th Electronics System-Integration Technology Conference (ESTC). IEEE Institute of Electrical and Electronic Engineers, 8th IEEE Electronics System-Integration Technology Conference, ESTC 2020, Tonsberg, Vestfold, Norway, 15/09/20. https://doi.org/10.1109/ESTC48849.2020.9229881

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AU - Happonen, Tuomas

AU - Korhonen, Arttu

AU - Väisänen, Kaisa-Leena

AU - Amin, Belal

AU - Tuomikoski, Markus

AU - Alajoki, Teemu

N1 - Funding Information: This study was done under project ELASTRONICS ? Enabling the future of wearable electronics. The project has received funding from Business Finland (Grant No. 3087/31/2018). Publisher Copyright: © 2020 IEEE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/9

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N2 - Stretchable electronics offers a new way for making wearable devices that are unobtrusive and conform to the user's body shape. Electronics manufactured on a stretchable substrate allows integration of electronics into e.g. clothing, disposable patches and wearable accessories while retaining user comfort. This paper presents a LED matrix display manufactured on thermoplastic polyurethane. A 5x17 LED matrix was fabricated with bare die semiconductor LED chips and a reference device with chip scale packaged components. Reliability under stretching is investigated with and without protective measures, namely support adhesive and laminated cover layer. It was found that the bare die samples could withstand no more than 6% strain whereas the packaged components could reach 18%. In a cyclic stretch test the best performance was recorded from a sample laminated with pressure sensitive adhesive, again chip scaled components faring better that the bare dies.

AB - Stretchable electronics offers a new way for making wearable devices that are unobtrusive and conform to the user's body shape. Electronics manufactured on a stretchable substrate allows integration of electronics into e.g. clothing, disposable patches and wearable accessories while retaining user comfort. This paper presents a LED matrix display manufactured on thermoplastic polyurethane. A 5x17 LED matrix was fabricated with bare die semiconductor LED chips and a reference device with chip scale packaged components. Reliability under stretching is investigated with and without protective measures, namely support adhesive and laminated cover layer. It was found that the bare die samples could withstand no more than 6% strain whereas the packaged components could reach 18%. In a cyclic stretch test the best performance was recorded from a sample laminated with pressure sensitive adhesive, again chip scaled components faring better that the bare dies.

KW - Bare die

KW - Die attach

KW - LED matrix

KW - Reliability

KW - Stretch

KW - TPU

KW - Wearable electronics

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DO - 10.1109/ESTC48849.2020.9229881

M3 - Conference article in proceedings

AN - SCOPUS:85096623825

SN - 978-1-7281-6294-2

BT - 2020 IEEE 8th Electronics System-Integration Technology Conference (ESTC)

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - 8th IEEE Electronics System-Integration Technology Conference, ESTC 2020

Y2 - 15 September 2020 through 18 September 2020

ER -

Stretchable LED matrix display

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Conference

Keywords

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