Liquid crystal display device

Abstract

An electrooptical display device comprising a film of liquid crystals between two systems of electrodes. One system comprises a plurality of integrated circuits forming a supporting layer on a substrate and a plurality of flat metallic electrodes deposited on the supporting layer, each electrode being connected electrically to one circuit. The other system comprises a transparent insulating plate provided on one face with a uniform coating of electrically conductive and semi-transparent material.

What we claim is:  .[.1. An electrooptical device of the type comprising a film of liquid crystals located between two systems of electrodes, wherein one of said systems comprises a supporting layer having a plurality of integrated circuits mounted on one side and a plurality of flat metallic electrodes deposited on the other side of said supporting layer, electrical connections through said supporting layer to connect each electrode with one of said circuits..]. .[.2. A device in accordance with claim 1, wherein the second system of electrodes aforesaid comprises an insulating and transparent plate which is provided on one face with a 
     
        uniform coating of conductive and semi-transparent material..]. 3. .[.A device in accordance with claim 2,.[. .Iadd.An electrooptical device of the type comprising a film of liquid crystals located between two systems of electrodes, wherein one of said systems comprises a supporting layer having a plurality of integrated circuits mounted on one side and a plurality of flat metallic electrodes deposited on the other side of said supporting layer, electrical connections through said supporting layer to connect each electrode with one of said circuits, wherein the second system of electrodes aforesaid comprises an insulating and transparent plate which is provided on one face with a uniform coating of conductive and semi-transparent material, .Iaddend.wherein said plate rests by means of its coated face on a metallic wall which is deposited at the periphery of said integrated-circuit supporting layer, the design function of said wall being to ensure leak-tightness of the device as well as optimum thickness of liquid crystals and an electrical connection to said coated face.  .[.4. A device in accordance with claim 1, wherein said liquid crystals are of the nematic type..]. .[.5. A device in accordance with claim 1, wherein said integrated circuits are constituted by transistor assemblies of the "metal-metal oxide-semiconductor" type..]. .[.6. A device in accordance with claim 5, wherein said integrated circuits form an electronic system of the shift register type..]. .[.7. A device in accordance with claim 1, wherein said integrated circuits and said electrodes are disposed in a rectangular panel consisting of n columns having p lines..]. .[.8. A device in accordance with claim 1, wherein illumination and observation of said device are made through crossed polarisers to obtain a colored display..]..Iadd. 9. An electrooptical device of the type comprising a film of liquid crystals located between a first insulating and transparent plate which is provided on one face with a uniform coating of conductive and semi-transparent material and a second plate which is provided on one face with a system of electrodes adapted for connection to electrode excitation circuits wherein said first plate rests by means of its coated face on a metallic wall which is deposited at the periphery of said second plate, the design function of said wall being to ensure leak-tightness of the device as well as optimum thickness of liquid crystals and an electrical connection to said first plate coated face. .Iaddend.