Date
Place
- Room F (Room 320)
- 53. Flexible/Transparent TFT and Circuitry
- August 21, 2015 (Friday)
- 11:00 ~ 12:35
- [53-2]
- 11:25 ~ 11:50
- Title:[Invited] Hybrid Polymers as Thermally Stable, Transparent Dielectric Material for Display Applications
- Daniela Collin, Johannes David Ankenbrand, Carola Cronauer, and Gerhard Domann (Fraunhofer Inst. for Silicate Research, Germany)
Abstract: Recent innovations in the field of displays deal with the realization of flexible applications. Major challenges dealing with the realization of high performance flexible displays are the implementation of flexible TFT backplanes and thus flexible functional layers, such as gate insulator and passivation insulator layers. This contribution deals with the development of novel insulator materials for flexible backplanes. In this context, hybrid inorganic-organic polymers (ORMOCER¢çs) are a promising class of materials, which are built up by organically functionalized element alkoxides. In this context ORMOCER¢çs were developed to realize innovative gate dielectrics and passivation materials. The thermal stability of the new materials was demonstrated until ca. 400 ¡ÆC without showing signs of degradation such as crack formation. Furthermore, the stability of the electrical properties under thermal stress or bending was investigated. The permittivity remained constant until a thermal stress of 300 - 400¡ÆC depending on the material. The bending robustness was examined by applying ©ø1000 bending events (radius:?30 mm) and subsequent analysis of the electrical properties and showed no signs of degradation even after ca. 20 000 repetitions.
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