&lt;title&gt;Thin film polarizers for liquid crystal displays&lt;/title&gt;

Bobrov, Yakov; Grodsky, A.; Ignatov, Leonid; Krivostchepov, A.; Назаров, В. В.; Remizov, S. V.

doi:10.1117/12.431274

Cited by 6 publications

(3 citation statements)

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“…These films have high temperature and environmental stability (TCF is stable up to 250ºC) [11]. They have found industrial applications as nano-film polarizers [3,4,10,[12][13][14][15] and retarders [16,17] for passive LCD. This paper illustrates molecular crystal structure of TCF and supramolecular ordering in its LLC precursor.…”

Section: Introductionmentioning

confidence: 99%

Thin crystal film polarizers and retarders

Ignatov¹,

Lazarev²,

Назаров³

et al. 2002

SPIE Proceedings

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We developed a new technology for thin crystal film (TCF) manufacturing based on water-soluble salts of aromatic polycyclic compounds. TCF is produced by coating and subsequent drying of an aqueous solution on plastic or glass surface into molecularly oriented 100-1000 nm thick crystal nano-film. First industrial application of nano-films is TCF polarizer for liquid crystal displays (LCD). TCF polarizers are made from modified organic dyes with relatively narrow spectral absorption band. Mixing various dyes allows covering broad spectral region. Blending provides variety of combinations of background and character colors that are necessary for applications. TCF made from dichroic dyes are highly anisotropic, biaxial extraordinary polarizers. Birefringence of TCF made from some materials reaches 1.0. Several highly birefringent TCFs show specific retardation characteristics. For example, 300 nm thick TCF based on dichroic dye with narrow absorption band at 450 nm and transparent in the long-wave region, has maximum birefringence of 0.85 in the wavelength region of 500-800 nm. TCF are available for industrial application in LCD as external, internal polarizers and retarders.

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Section: Introductionmentioning

confidence: 99%

Thin crystal film polarizers and retarders

Ignatov¹,

Lazarev²,

Назаров³

et al. 2002

SPIE Proceedings

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“…The polarizers possess high thermal stability (working temperature up to 200°C) and small thickness (<1 µm), and therefore could be used as "in-cell" polarizers in LCD. Unfortunately, the polarizing properties of these first-generation (1G) materials are rather poor [3,4] in comparison with iodine polarizers, mainly because of their disclike chromophore structure (E-polarizers, Fig.1).…”

Section: Introductionmentioning

confidence: 99%

46.4: Ultra‐Thin O‐Polarizers' Superiority over E‐Polarizers for LCDs

Khan

Belyaev

Malimonenko

et al. 2004

Symp Digest of Tech Papers

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Ultra thin (<1 μm) polarizers with high polarizing efficiency based on lyotropic dichroic dyes have been developed for LCD and other applications. The developed polarizers reveal rod‐like chromophore structure (O‐polarizers), same as conventional iodine polarizers in contrast to the first‐generation polarizers with disc‐like chromophores structure (E‐polarizers). Polarizing efficiency, single transmission, dichroic ratio, and color of developed O‐polarizers are close to the iodine polarizers.

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“…Some preliminary results on TCF polarizer thermostability were reported earlier. 17,18 2 TCF coating material and coating procedure Supramolecular materials utilized in TCF manufacturing are based on water-soluble modified organic blue (B), violet (V), and red (R) dyes, which are the products of sulfonation of indanthrone, dibenzimidazole derivatives of perylenetetracarboxylic, and naphthalenetetracarboxylic acids, accordingly. 5 Individual dyes and their mixtures are used for LLC material preparation.…”

Section: Introductionmentioning

confidence: 99%

Environmental and optical testing of Thin Crystal Film™ polarizers

Bobrov¹,

Blinov²,

Ignatov³

et al. 2003

J Soc Info Display

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Abstract— We have developed an advanced polarizing nanomaterial that provides new technical and economical advantages over traditional iodine film polarizers for LCD designers and manufacturers. Thin Crystal Film (TCF)™ polarizer material is based on modified organic dichroic dyes and can be simply coated as a thin molecular oriented film (less than 1 μm) directly onto a plastic or glass substrate. This crystalline material exhibits enhanced viewing‐angle characteristics, high thermal stability, and lightfastness. Replacement of conventional polarizers by the new TCF polarizer allows decreasing thickness of LCD designs by 20–75%, improving LCD durability and reliability, all while significantly reducing cost. This paper presents TCF polarizer products for LCD applications. We report the results of TCF optical and environmental testing. Ultraviolet‐light photostability of TCF is also studied.

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<title>Thin film polarizers for liquid crystal displays</title>

Cited by 6 publications

References 0 publications

Thin crystal film polarizers and retarders

Thin crystal film polarizers and retarders

46.4: Ultra‐Thin O‐Polarizers' Superiority over E‐Polarizers for LCDs

Environmental and optical testing of Thin Crystal Film™ polarizers

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