Large liquid crystal displays and method of producing them

Claim 2

A display comprising first and second electrodes disposed in spaced, parallel planes, said first electrode being an electrically-conductive foraminate screen having its interstices filled with a liquid crystal material which is normally transparent but which becomes turbulent in the presence of an electrostatic field, a layer of dielectric material positioned between the confronting surfaces of said screen and said second electrode, and a transparent plate covering one of said electrodes at the side thereof opposite to said dielectric layer.

Claim 3

A display as claimed in claim 1, wherein said layer of dielectric material separates both said screen and said liquid crystal material from said second electrode.

Claim 4

A display as claimed in claim 1, wherein the layer of dielectric material is an insulating screen registering with the first-named screen.

Claim 5

A display as claimed in claim 1 wherein both electrodes are electrically-conductive foraminate screens, and the interstices of both screens contain said liquid crystal material.

Claim 6

A display as claimed in claim 4, wherein the transparent plate covering said one electrode is a clear, dielectric, and wherein the other electrode is also covered by a clear dielectric substrate.

Claim 7

A display as claimed in claim 4, wherein said layer of dielectric material is a transparent film.

Claim 8

A display as claimed in claim 1, wherein said second electrode is a transparent electrically conductive film, the covering plate is glass, and the layer of dielectric material is a transparent dielectric film.

Claim 9

A display as claimed in claim 1, wherein the transparent plate is glass, said second electrode is a transparent conductor adhered to the underside of the glass by a clear adhesive film, said layer of dielectric material is a transparent film, and said first electrode is mounted on a clear plastic substrate.

Claim 10

A display as claimed in claim 8, wherein the glass, transparent conductor, dielectric film, said first electrode, and said plastic substrate are all curved and of identical curvature.

Claim 11

A display as claimed in claim 3 wherein both electrodes, are electrically-conductive foraminate screens and the insulating screen is disposed between them and registers with both electrodes.

Claim 12

A display comprising three superposed layers of material, the two outer layers being made of electrically-conductive material and defining two spaced electrodes, aNd the inner layer being made of dielectric material and electrically insulating said two electrodes from each other, one of said layers being a foraminate grid having its interstices filled with a liquid crystal material which is normally transparent, but which becomes turbulent when an electric potential is applied across said electrodes, and a transparent cover plate overlying one of said electrodes on the side thereof remote from said insulating layer, said grid being electrically conductive and mounted on a substrate plate and constituting one electrode of the display, and the other electrode being an electrically conductive coating on the underside of said cover plate.

Claim 13

A display comprising three superposed layers of material, the two outer layers being made of electrically-conductive material and defining two spaced electrodes, aNd the inner layer being made of dielectric material and electrically insulating said two electrodes from each other, one of said layers being a foraminate grid having its interstices filled with a liquid crystal material which is normally transparent, but which becomes turbulent when an electric potential is applied across said electrodes, and a transparent cover plate overlying one of said electrodes on the side thereof remote from said insulating layer, said grid being electrically conductive and mounted on a substrate plate and constituting one electrode of the display, and the other electrode being an electrically conductive coating on the underside of said cover plate.

Claim 14

A display as claimed in claim 11, wherein the substrate plate is transparent.

Claim 15

A display as claimed in claim 11, wherein the substrate plate is opaque.

Claim 16

A display comprising three superposed layers of material, the two outer layers being made of electrically-conductive material and defining two spaced electrodes, and the inner layer being made of dielectric material and electrically insulating said two electrodes from each other, one of said layers being a foraminate grid having its interstices filled with a liquid crystal material which is normally transparent, but which becomes turbulent when an electric potential is applied across said electrodes, and a transparent cover plate overlying one of said electrodes on the side thereof remote from said insulating layer, said grid being electrically-conductive and seated against said transparent plate to form one of said electrodes, the other electrode being a metal foil electrode on which is disposed an adhesive layer, and said dielectric inner layer being interposed between said grid and said adhesive layer.

Claim 17

A display comprising three superposed layers of material, the two outer layers being made of electrically-conductive material and defining two spaced electrodes, and the inner layer being made of dielectric material and electrically insulating said two electrodes from each other, one of said layers being a foraminate grid having its interstices filled with a liquid crystal material which is normally transparent, but which becomes turbulent when an electric potential is applied across said electrodes, and a transparent cover plate overlying one of said electrodes on the side thereof remote from said insulating layer, said grid being electrically-conductive and seated against said transparent plate to form one of said electrodes, the other electrode being a metal foil electrode on which is disposed an adhesive layer, and said dielectric inner layer being interposed between said grid and said adhesive layer.

Claim 18

A display comprising three superposed layers of material, the two outer layers being made of electrically-conductive material and defining two spaced electrodes, and the inner layer being made of dielectric material and electrically insulating said two electrodes from each other, one of said layers being a foraminate grid having its interstices filled with a liquid crystal material which is normally transparent, but which becomes turbulent when an electric potential is applied across said electrodes, and a transparent cover plate overlying one of said electrodes on the side thereof remote from said insulating layer there being a plurality of said grids seated against said transparent plate and extending in one direction in parallelism to one another, a second transparent plate being provided, a second plurality of said grids being seated one said second plate and extending in parallelism to one another but at right angles to the first-named plurality of grids to provide and X-Y panel, said dielectric layer being disposed between said first and second pluralities of grids, and all said grids being electrically-conductive, and means for applying an electric current selectively to any one of said first-named plurality of grids and simultaneously selectively to any one of the second plurality of grids.

Claim 19

A display comprising three superposed layers of material, the two outer layers being made of electrically-conductive material and defining two spaced electrodes, and the inner layer being made of dielectric material and electrically insulating said two electrodes from each other, one of said layers being a foraminate grid having its interstices filled with a liquid crystal material which is normally transparent, but which becomes turbulent when an electric potential is applied across said electrodes, and a transparent cover plate overlying one of said electrodes on the side thereof remote from said insulating layer there being a plurality of said grids seated against said transparent plate and extending in one direction in parallelism to one another, a second transparent plate being provided, a second plurality of said grids being seated one said second plate and extending in parallelism to one another but at right angles to the first-named plurality of grids to provide and X-Y panel, said dielectric layer being disposed between said first and second pluralities of grids, and all said grids being electrically-conductive, and means for applying an electric current selectively to any one of said first-named plurality of grids and simultaneously selectively to any one of the second plurality of grids.