Method of making a liquid crystal alignment layer

Details Method of making a liquid crystal alignment layer Method of making a liquid crystal alignment layer

2007-05-08

2007-05-08

Bashore, Alain L. (Department: 1762)

Coating processes

Optical element produced

C427S163100, C427S164000, C427S165000, C427S256000, C427S258000, C427S261000, C427S286000, C427S355000, C427S358000, C427S371000, C428S001200, C349S123000, C349S124000, C349S126000, C349S135000

Reexamination Certificate

active

10653068

ABSTRACT:
A method of making a liquid crystal alignment layer comprising the steps of: (i) providing a layer on a substrate, the layer comprising a polythiophene according to formula (I):wherein R1and R2each independently represent hydrogen or a C1–C4alkyl group or together represent a C1–C4alkylene group or a cycloalkylene group; and (ii) mechanically rendering the layer liquid crystal aligning; a liquid crystal alignment layer obtainable by the above-mentioned method; a liquid crystal device incorporating the above-mentioned liquid crystal alignment layer; a liquid crystal display comprising the above-mentioned liquid crystal alignment layer or the above-mentioned liquid crystal device; and the use of the polythiophene according to formula (I) for aligning liquid crystals.

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Dae-Shik Seo et al: “A Study Of High Pretilt Angle Generation In Nematic Liquid Crystal (5CB) On Rubbed Polythiophene Surfaces With Alkyl Chain Lengths”; Jpn. J. Appl. Phys., vol. 35 (1996), pp. 3531-3532, Part 1, No. 6A, Jun. 1996; XP-000735519.

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