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Video-speed electronic paper based on electrowetting

Abstract

In recent years, a number of different technologies have been proposed for use in reflective displays1,2,3. One of the most appealing applications of a reflective display is electronic paper, which combines the desirable viewing characteristics of conventional printed paper with the ability to manipulate the displayed information electronically. Electronic paper based on the electrophoretic motion of particles inside small capsules has been demonstrated1 and commercialized; but the response speed of such a system is rather slow, limited by the velocity of the particles. Recently, we have demonstrated that electrowetting is an attractive technology for the rapid manipulation of liquids on a micrometre scale4. Here we show that electrowetting can also be used to form the basis of a reflective display that is significantly faster than electrophoretic displays, so that video content can be displayed. Our display principle utilizes the voltage-controlled movement of a coloured oil film adjacent to a white substrate. The reflectivity and contrast of our system approach those of paper. In addition, we demonstrate a colour concept, which is intrinsically four times brighter than reflective liquid-crystal displays5 and twice as bright as other emerging technologies1,2,3. The principle of microfluidic motion at low voltages is applicable in a wide range of electro-optic devices.

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Figure 1: Electrowetting display principle.
Figure 2: Electro-optic behaviour of electrowetting display pixels.
Figure 3: Electrowetting pixel kinetics.
Figure 4: The high-brightness colour electrowetting display principle.

References

  1. Comiskey, B., Albert, J. D., Yoshizawa, H. & Jacobson, J. An electrophoretic ink for all-printed reflective electronic displays. Nature 394, 253–255 (1998)

    ADS  CAS  Article  Google Scholar 

  2. Sheridon, N. K. et al. in Proc. IDRC97 (ed. Morreale, J.) L82–L85 (Society for Information Display, Toronto, 1997)

    Google Scholar 

  3. Podojil, G. M. et al. in SID98 Digest (ed. Morreale, J.) 51 (Society for Information Display, Anaheim, CA, 1998)

    Google Scholar 

  4. Prins, M. W. J., Welters, W. J. J. & Weekamp, J. W. Fluid control in multichannel structures by electrocapillary pressure. Science 291, 277–279 (2001)

    ADS  CAS  Article  Google Scholar 

  5. Grupp, J. in Eurodisplay Digest 2002 35–38 (Le Club Visu, SID-France, Nice, 2002)

    Google Scholar 

  6. Welters, W. J. J. & Fokkink, L. G. J. Fast electrically switchable capillary effects. Langmuir 14, 1535–1538 (1998)

    CAS  Article  Google Scholar 

  7. Quilliet, C. & Berge, B. Electrowetting: A recent outbreak. Curr. Opin. Colloid Interface Sci. 6, 34–39 (2001)

    CAS  Article  Google Scholar 

  8. Berge, B. & Peseux, J. Variable focus lens controlled by an external voltage: An application of electrowetting. Eur. Phys. J. E 3, 159–163 (2000)

    CAS  Article  Google Scholar 

  9. Pollack, M. G., Fair, R. B. & Shenderov, A. Electrowetting-based actuation of liquid microdroplets for microfluidic applications. Appl. Phys. Lett. 77, 1725–1726 (2000)

    ADS  CAS  Article  Google Scholar 

  10. Seyrat, E. & Hayes, R. A. Amorphous fluoropolymers as insulators for reversible low-voltage electrowetting. J. Appl. Phys. 90, 1383–1386 (2001)

    ADS  CAS  Article  Google Scholar 

  11. Moon, H., Sung, K. C., Garrell, R. L. & Kim, C. J. Low voltage electrowetting-on-dielectric. J. Appl. Phys. 92, 4080–4087 (2002)

    ADS  CAS  Article  Google Scholar 

  12. Beni, G. & Hackwood, S. Electrowetting displays. Appl. Phys. Lett. 38, 207–209 (1981)

    ADS  CAS  Article  Google Scholar 

  13. Ritter, J. in IDW01 Digest 343 (Society for Information Display, Nagoya, 2001)

    Google Scholar 

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Acknowledgements

We acknowledge the infrastructural support provided by the Devices, Technology & Services Department, our project colleagues and our team of students (M. Joulaud, J. Guiberteau, R. Massard, E. Morks, A.-S. Dupont, K. Girard, C. Maufrais and P. Jaulneau).

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Correspondence to Robert A. Hayes or B. J. Feenstra.

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The authors declare that they have no competing financial interests.

Supplementary information

41586_2003_BFnature01988_MOESM1_ESM.zip

Supplementary Information: This Zip file contains 6 movie files which can be downloaded and a word document giving a brief description of each movie. (ZIP 5198 kb)

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Hayes, R., Feenstra, B. Video-speed electronic paper based on electrowetting. Nature 425, 383–385 (2003). https://doi.org/10.1038/nature01988

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