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Proceedings Paper

High-resolution direct-view displays based on the biological photochromic material bacteriorhodopsin
Author(s): Norbert A. Hampp; Markus Sanio; Klaus Anderle
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Paper Abstract

A thin layer of the biological photochromic material bacteriorhodopsin (BR) sandwiched between dielectric layers and absorptive filters mounted onto glass substrates forms a direct-view display. Information is written to this BR- display via a scanning laser beam. Back-illumination of the BR-display with a white light source allows to observe the information in high contrast and with a high resolution which is limited only by the parameters of the laser scanner. Since BR thermally decays back into the initial state a periodic refresh is required every 15-30 secs in order to keep 90 percent of the maximal contrast. This low refresh frequency is achieve distance the genetically modified BR variant D96N is employed in the photoactive layer. Photochemical erasure with intense blue light allows to clear the whole display immediately. Weak homogeneous illumination with blue light is used to maximize the contrast by compensating the bleaching effect of the light from the back-illumination. The BR-displays described here have diameters of 2 inches but much larger displays can be manufactured by the same technology.

Paper Details

Date Published: 12 April 1999
PDF: 8 pages
Proc. SPIE 3636, Flat Panel Display Technology and Display Metrology, (12 April 1999); doi: 10.1117/12.344654
Show Author Affiliations
Norbert A. Hampp, Philipps-Univ. of Marburg (Germany) and Materials Science Ctr. (Germany)
Markus Sanio, Philipps-Univ. of Marburg (Germany) and Materials Science Ctr. (Germany)
Klaus Anderle, Philipps-Univ. of Marburg (Germany) and Materials Science Ctr. (Germany)


Published in SPIE Proceedings Vol. 3636:
Flat Panel Display Technology and Display Metrology
Bruce Gnade; Edward F. Kelley, Editor(s)

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