Method of fabricating electro-optical devices with polymer-stabilized liquid crystal molecules

• In a prepn. method, a chiral or cholesteric liq. crystal, a photoreactive monomer, and a photoinitiator are disposed in a liq. crystal cell. A principal surface of the liq. crystal cell is illuminated with UV light selected to have a nonuniform UV light intensity profile in the liq. crystal cell. The illuminating cooperates with the photoinitiator to polymerize at least a portion of the photoreactive monomer near the principal surface to generate a polymer network having a d. corresponding to the nonuniform UV light intensity profile. The polymer network biases the liq. crystal toward a selected helical alignment direction. In some embodiments, the illuminating includes illuminating with 1st and 2nd UV light intensity profiles to produce surface and vol. polymer network components.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Annan teknik -- Övrig annan teknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)

Keyword

Liquid crystals (cholesteric

electro-optical devices with polymer-stabilized liq. crystal mols.)

Electrooptical imaging devices

Electrooptical instruments (electro-optical devices with polymer-stabilized liq. crystal mols.)

Polymerization (photopolymn.

in fabrication of

electro-optical devices with polymer-stabilized liq. crystal mols.)

electrooptical device polymer stabilized liq crystal

Publication and Content Type

vet (subject category)

pat (subject category)