G - Physics – 02 – F
Patent
G - Physics
02
F
117/213, 345/8
G02F 1/133 (2006.01) G02F 1/1337 (2006.01)
Patent
CA 1278364
LIQUID CRYSTAL DEVICE WITH CHEMICALLY-INDUCED HIGH-TILT ALIGNMENT COATING Abstract This invention relates to improved liquid crystal devices useful in liquid crystal displays as well as other devices such as optical shutters. The improvement resides in the use of high-tilt alignment coatings (e.g. 80 and 90) in the device. High-tilt (e.g., 5-85°) is achieved by chemical treatment of the interior surfaces of a liquid crystal device. Illustratively, the treatment entails applying a combination of surface coupling agents one of which alone would cause the LC director to make and angle .alpha.1 (e.g., .alpha.1 = 0°; homogeneous alignment) with the surface and another of which alone would yield .alpha.2(e.g., .alpha.2 = 90°, homeotropic alignment), but together they produce .alpha.3 different from .alpha.1 and .alpha.2. (FIG 1)
540406
Filas Robert William
Patel Jayantilal Shamjibhai
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
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