Accuracy control for roll and sheet processed printed electronics on flexible plastic substrates
Julkaisuvuosi
2022
Tekijät
Välimäki, Marja K.; Jansson, Elina; Von Morgen, Valentijn J.J.; Ylikunnari, Mari; Väisänen, Kaisa Leena; Ontero, Pekka; Kehusmaa, Minna; Korhonen, Pentti; Kraft, Thomas M.
Tiivistelmä
<p>For the first time, the necessity to thermally pre-treat ubiquitously used PET substrates for printed electronics, to improve dimensional stability during manufacturing, is clearly defined. The experimental results have proven this phenomenon for both roll-to-roll (R2R) and sheet-to-sheet (S2S) processing of printed electronics. The next generation of electronics manufacturing has pushed the boundaries for low-cost, flexible, printed, and mass produced electronic components and systems. A driving force, and enabling production method, are the R2R printing presses. However, to produce electronics with increasing complexity and high yield in volume production, one must have a highly accurate process. In this article, R2R processing accuracy of printed electronics is evaluated from the point of dimensional accuracy of the flexible polyester substrate (DuPont Teijin Films’ PET Melinex ST504 with and without indium tin oxide, Melinex ST506, and Melinex PCS), precision of printing, and accuracy of layer-to-layer registration with stages that involve tension and elevated temperatures. This study has confirmed that dimensional changes during R2R processing will occur only in the first processing stage and that if a thermal pre-treatment run for the substrate is made—at identical temperature and tension of the processing stage—there is improved stability originating from a new-level strain in the crystalline PET film structure and freezing it in at the tensions and temperatures it is exposed to (i.e. 1400 μm machine direction stretching reduced to 8 μm). Furthermore, it is explained how the dimensional accuracy can be improved and reproducibly maintained in multilayer printing of electronics devices such as organic photovoltaics (OPV). These devices provide a valuable baseline of how the layer-to-layer alignment accuracy plays a crucial role in fully printed electronics devices, which lessons can be applied in all aspects of this field including hybrid systems and system fabrication involving multiple processing methods.</p>
Näytä enemmänOrganisaatiot ja tekijät
Teknologian tutkimuskeskus VTT Oy
Jansson Elina
Väisänen Kaisa Leena
Välimäki Marja K.
Kehusmaa Minna
Ontero Pekka
Korhonen Pentti
Julkaisutyyppi
Julkaisumuoto
Artikkeli
Emojulkaisun tyyppi
Lehti
Artikkelin tyyppi
Alkuperäisartikkeli
Yleisö
TieteellinenVertaisarvioitu
VertaisarvioituOKM:n julkaisutyyppiluokitus
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäJulkaisukanavan tiedot
Volyymi
119
Numero
9-10
Sivut
6255-6273
ISSN
Julkaisufoorumi
Julkaisufoorumitaso
1
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CC BY
Rinnakkaistallennettu
Ei
Muut tiedot
Tieteenalat
Tietojenkäsittely ja informaatiotieteet; Kone- ja valmistustekniikka
Avainsanat
[object Object],[object Object],[object Object],[object Object]
Kieli
englanti
Kansainvälinen yhteisjulkaisu
Ei
Yhteisjulkaisu yrityksen kanssa
Kyllä
DOI
10.1007/s00170-022-08717-z
Julkaisu kuuluu opetus- ja kulttuuriministeriön tiedonkeruuseen
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