Christopher John Fulton

US Patent:

46066101, Aug 19, 1986

Filed:

May 3, 1984

Appl. No.:

6/606696

Inventors:

Zvi Yaniv - Southfield MI
Vincent D. Cannella - Birmingham MI
Terry T. Yu - Mt. Clemens MI
Christopher Fulton - Royal Oak MI

Assignee:

Energy Conversion Devices, Inc. - Troy MI

International Classification:

G02F 113

US Classification:

350331R

Abstract:

A system is disclosed which includes a transmissive liquid crystal display of the type which may display a line of characters or symbols at a time, or which may display only a raster line in combination with an energy source and a controllable and transportable medium. The medium is exposed by energy from the source of energy passing through the liquid crystal display which acts as a mask for the source of energy. The liquid crystal display may be set by electrical signals manually generated such as by a keyboard or by signals automatically generated by use of other electronic equipment. In one alternate embodiment of the invention a large area two-dimensional liquid crystal display is used as a mask. In another embodiment of the invention a liquid crystal display is used as a mask for the purpose of exposing a photoconductive drum of the type used in xerography. A reflective liquid crystal display is disclosed in yet another embodiment of the invention.