Incorporation of photoluminescent polarizers into liquid crystal displays

Science

Volumn 279, Issue 5352, 1998, Pages 835-837

  Weder, Christoph ^a   Sarwa, Christian ^a   Montali, Andrea ^a   Bastiaansen, Cees ^a   Smith, Paul ^a  

^a ETH ZURICH   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

DISPLAY DEVICES; ELECTROOPTICAL DEVICES; LIGHT ABSORPTION; LIGHT EMISSION; LIGHT POLARIZATION; LIQUID CRYSTAL DISPLAYS; OPTICAL FILTERS; PHOTOLUMINESCENCE; ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENES;

PHOTOLUMINESCENT POLARIZERS; TWISTED NEMATIC ELECTROOPTICAL LIGHT VALVE;

LUMINESCENT DEVICES;

ANISOTROPY; ARTICLE; DEVICE; DISPLAY SYSTEM; FILTER; LIQUID CRYSTAL; LUMINESCENCE; POLARIZATION; PRIORITY JOURNAL;

EID: 0032488953     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.279.5352.835     Document Type: Article

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21. Blend films were prepared by casting a solution of the PPE (10 mg) and UHMW-PE (Hostalen Gur 412, Hoechst, 0.5 g) in xylene (50 ml) (dissolution at 130°C, after degassing the mixture in vacuum at 25°C for 15 min) into a petri dish 11 cm in diameter. The resulting gels were dried under ambient conditions for 24 hours to yield films of a homogeneous thickness of about 70 μm. These blend films were drawn at temperatures of 90° to 120°C to a draw ratio λ (final length/initial length) of about 80, to produce oriented PL layers of a thickness of about 2 μm. The PL layers were sandwiched between two glass or quartz slides; a thin layer of silicon oil fluid was applied to minimize light scattering at the film surfaces. Further details on the preparation of polarized PL layers are given in (12).
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24. We thank D. J. Broer for stimulating discussions and for providing LC cells.