Phase transition mode liquid crystal display device

Details Phase transition mode liquid crystal display device Phase transition mode liquid crystal display device

1980-08-20

1983-04-19

Corbin, John K.

350340, 350341, 350349, G02F 113

Patent

active

043803725

ABSTRACT:
A phase transition mode liquid crystal display device has a liquid crystal mixture comprised of a nematic liquid crystal and at least one of a cholesteric liquid crystal and a chiral nematic liquid crystal sandwiched between a pair of substrates. Transparent electrodes are formed on the inner surfaces of the substrates in contact with the liquid crystal mixture to define a set of picture elements. The liquid crystal mixture exhibits, in the absence of an electric field, a pseudo-focal-conic light-scattering state due to a thermooptic effect which defines the display background. A relatively high voltage is applied to the liquid crystal mixture in the regions of selected picture elements to transform the selected picture element regions to a homeotropic light-transmitting state and a relatively low voltage is applied to the liquid crystal mixture in the regions of non-selected picture elements to transform the non-selected picture element regions to a focal-conic light-scattering state. In this manner, the selected picture elements are turned on, and the non-selected picture elements are turned off and exhibit an appearance closely similar to that of the display background thereby enhancing the display of the selected picture elements.

REFERENCES:
patent: 3833287 (1974-09-01), Taylor et al.
patent: 3837730 (1974-09-01), Hatfield et al.
patent: 3854793 (1974-12-01), Kahn
patent: 3966305 (1976-06-01), Young
patent: 3973388 (1976-08-01), Yoshida et al.
patent: 4112157 (1978-09-01), Krueger et al.
patent: 4114990 (1978-09-01), Mash et al.
patent: 4165922 (1979-08-01), Morrissy
patent: 4183628 (1980-01-01), Laesser et al.
patent: 4185894 (1980-01-01), Hilton et al.
patent: 4278328 (1981-07-01), Mukoh et al.

Affiliated with

Also associated with

Rating

Phase transition mode liquid crystal display device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase transition mode liquid crystal display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase transition mode liquid crystal display device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-835929