Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2007-02-13
2007-02-13
Nguyen, Dung T. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S093000
Reexamination Certificate
active
09635606
ABSTRACT:
A method of fabricating an optical device by providing a nematic liquid crystal; providing a photo-curable pre-polymer mixture; mixing the nematic liquid crystal with the photo-curable pre-polymer mixture to form a homogeneous nematic/pre-polymer mixture, with the nematic liquid crystal representing greater than 40% (by weight) of the combined homogeneous mixture. Providing a cell including a pair of transparent substrates that are each coated with a transparent conductive layer when creating an electrooptic device and omitting the conductive layers when creating a static device. Separating the substrates by approximately 5–20 μm or greater; filling the cell with the homogeneous nematic/pre-polymer mixture; and photo-curing the nematic/pre-polymer mixture using a spatially inhomogeneous illumination source thereby forming a polymer dispersed liquid crystal (PDLC) film exhibiting low scattering loss and high index modulation.
REFERENCES:
patent: 4671618 (1987-06-01), Wu et al.
patent: 4688900 (1987-08-01), Doane et al.
patent: 4890902 (1990-01-01), Doane et al.
patent: 5093735 (1992-03-01), Doane et al.
patent: 5200110 (1993-04-01), Obikawa et al.
patent: 5448382 (1995-09-01), Land et al.
patent: 5625473 (1997-04-01), Kondo et al.
patent: 5668651 (1997-09-01), Yamada et al.
patent: 5942157 (1999-08-01), Sutherland et al.
patent: 6278506 (2001-08-01), Sumiyoshi et al.
patent: 6339486 (2002-01-01), Popovich
R.L. Sutherland, L.V. Natarajan, V.P. Tondiglia, and T.J. Bunning,Bragg Gratings in an Acrylate Polymer Consisting of Periodic Polymer-Dispersed Liquid-Crystal Planes,Chem. Mater. 5 1533-1538 (1993).
D.C. Flanders,Submicrometer periodicity gratings as artificial anisotropic dielectrics,Appl. Phys. Lett. 42 (6) 492-494 (Mar. 15, 1983).
H. Kogelnik,Coupled Wave Theory for Thick Hologram Gratings,The Bell System Technical Journal 48 (9) 2909-2947 (1969).
P.S. Drzaic,Liquid Crystal Dispersions,(World Scientific, New Jersey, 1995).
Avago Technologies General IP ( Singapore) Pte. Ltd.
Duong Thoi V.
Nguyen Dung T.
LandOfFree
Methods of fabricating PDLC optical devices does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods of fabricating PDLC optical devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of fabricating PDLC optical devices will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3823280