Design of a lighting system with high-power LEDs, large area electronics, and light management structure in the LUMENTILE European project

L. Carraro, M. Simonetta, G. Benetti, A. Tramonte, G. Capelli, M. Benedetti, E.M. Randone, Arto Ylisaukko-oja, Kimmo Keränen, T. Facchinetti, G. Giuliani

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    LUMENTILE (LUMinous ElectroNic TILE) is a project funded by the European Commission with the goal of developing a luminous tile with novel functionalities, capable of changing its color and interact with the user. Applications include interior/exterior tile for walls and floors covering, high-efficiency luminaries, and advertising under the form of giant video screens. High overall electrical efficiency of the tile is mandatory, as several millions of square meters are foreseen to be installed each year. Demand is for high uniformity of the illumination of the top tile surface, and for high optical extraction efficiency. These features are achieved by smart light management, using a new approach based on light guiding slab and spatially selective light extraction obtained using both diffusion and/or reflection from the top and bottom interfaces of the optical layer. Planar and edge configurations for the RGB LEDs are considered and compared. A square shape with side length from 20cm to 60cm is considered for the tiles. The electronic circuit layout must optimize the electrical efficiency, and be compatible with low-cost roll-to-roll production on flexible substrates. LED heat management is tackled by using dedicated solutions that allow operation in thermally harsh environment. An approach based on OLEDs has also been considered, still needing improvement on emitted power and ruggedness.
    Original languageEnglish
    Title of host publicationLight Emitting Diodes
    Subtitle of host publicationMaterials, Devices, and Applications for Solid State Lighting XXI
    EditorsMichael R. Krames, Jong Kyu Kim, Li-Wei Tu, Martin Strassburg
    PublisherInternational Society for Optics and Photonics SPIE
    ISBN (Print)978-1-5106-0689-0
    DOIs
    Publication statusPublished - 1 Jan 2017
    MoE publication typeA4 Article in a conference publication
    EventLight-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI 2017: OPTO 2017 - San Francisco, United States
    Duration: 30 Jan 20171 Feb 2017

    Publication series

    SeriesProceedings of SPIE
    Volume10124
    ISSN0277-786X

    Conference

    ConferenceLight-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI 2017
    Country/TerritoryUnited States
    CitySan Francisco
    Period30/01/171/02/17

    Keywords

    • large area electronics
    • LED
    • lighting
    • smart driving

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