Liquid crystal material including magnetic particles and method of producing the same

Patent 4701024 Issued on October 20, 1987. Estimated Expiration Date:

December 1, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Orientation system
Patent #: 4060910
Issued on: 12/06/1977
Inventor: Gell, Jr.

Orientation system
Patent #: 4198635
Issued on: 04/15/1980
Inventor: Gell, Jr.

Electrophoretic display device using a liquid crystal as a threshold device
Patent #: 4305807
Issued on: 12/15/1981
Inventor: Somlyody

Encapsulated liquid crystal and method Patent #: 4435047
Issued on: 03/06/1984
Inventor: Fergason

Inventors

Assignee

Dai-ichi Seiko Kabushiki Kaisha

Application

No. 06/936180 filed on 12/01/1986

US Classes:

349/166, Nonspacer particles significantly smaller than liquid crystal thickness (e.g., scattering centers, ferromagnetic particles, etc.)349/130, For perpendicular alignment349/23, Magnetic or pressure excitation349/86Microencapsulated or polymer dispersed liquid crystal

Examiners

Primary: Corbin, John K.
Assistant: Gallivan, Richard F.

Attorney, Agent or Firm

Spensley Horn Jubas & Lubitz

International Classes

C09K 19/56 (20060101)
G06F 3/033 (20060101)
G02F 1/13 (20060101)
G02F 1/1334 (20060101)
G02F 1/137 (20060101)

Foreign Application Priority Data

1985-12-02 JP

Abstract

In order to make it possible to be adapted to be used for an integrated liquid crystal panel having a built-in direct touch-entry enabling device, a liquid crystal material made by dispersing many needle-shaped magnetic substance particles respectively coated with a surface active agent in a well known liquid crystal substance and a method of making the same. The liquid material can be utilized in the form of many encapsulated liquid material units combined with one another. In case such encapsulated liquid crystal material is used for a liquid crystal device, it need not be sealed with glass or the like and can be directly applied to paint any required part and, even if the painted part is curved during the use, it can develop its performance.