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A ferroelectric polymer introduces addressability in electrophoretic display cells
Linköping University, Department of Science and Technology. Linköping University, Faculty of Science & Engineering.
Univ Bordeaux, France.
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-7016-6514
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2799-3490
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2019 (English)In: FLEXIBLE AND PRINTED ELECTRONICS, ISSN 2058-8585, Vol. 4, no 3, article id 035004Article in journal (Refereed) Published
Abstract [en]

During the last decades, tremendous efforts have been carried out to develop flexible electronics for a vast array of applications. Among all different applications investigated in this area, flexible displays have gained significant attention, being a vital part of large-area devices, portable systems and electronic labels etc electrophoretic (EP) ink displays have outstanding properties such as a superior optical switch contrast and low power consumption, besides being compatible with flexible electronics. However, the EP ink technology requires an active matrix-addressing scheme to enable exclusive addressing of individual pixels. EP ink pixels cannot be incorporated in low cost and easily manufactured passive matrix circuits due to the lack of threshold voltage and nonlinearity, necessities to provide addressability. Here, we suggest a simple method to introduce nonlinearity and threshold voltage in EP ink display cells in order to make them passively addressable. Our method exploits the nonlinearity of an organic ferroelectric capacitor that introduces passive addressability in display cells. The organic ferroelectric material poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) is here chosen because of its simple manufacturing protocol and good polarizability. We demonstrate that a nonlinear EP cell with bistable states can be produced by depositing a P(VDF-TrFE) film on the bottom electrode of the display cell. The P(VDF-TrFE) capacitor and the EP ink cell are separately characterized in order to match the surface charge at their respective interfaces and to achieve and optimize bistable operation of display pixels.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2019. Vol. 4, no 3, article id 035004
Keywords [en]
ferroelectric; electrophoretic display; passive matrix display
National Category
Medical Materials
Identifiers
URN: urn:nbn:se:liu:diva-164438DOI: 10.1088/2058-8585/ab3f53ISI: 000485745100001OAI: oai:DiVA.org:liu-164438DiVA, id: diva2:1416661
Note

Funding Agencies|Advanced Functional Materials Center at Linkoping University; Onnesjo Foundation; Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; Swedish Foundation for Strategic ResearchSwedish Foundation for Strategic Research; Aquitaine regionRegion Nouvelle-Aquitaine; Arkema; Equipex ELOR-PrintTec [ANR-10EQPX-28-01]; LabEx AMADEUS [ANR-10-LABEX0042-AMADEUS]; French state Initiative dExcellence IdEx [ANR-10-IDEX-003-02]; LCPO/Arkema INDUSTRIAL CHAIR HOMERIC [ANR-13CHIN-0002-01]

Available from: 2020-03-24 Created: 2020-03-24 Last updated: 2020-04-15

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