Colour liquid crystal electro-optical device and method of manufacturing the same

Claim 1

A coloured liquid crystal electro-optical device comprising a pair of electrodes (2,7), a colour filter (3) on at least one of said electrodes and an orientation layer (5) disposed on the colour filter (3) characterised by a protective layer (4) between the orientation layer and the colour filter.

Claim 7

A device as claimed in any preceding claim characterised in that the protective layer (4) is selected from a polymer containing an epoxy group, a polymer containing a silane coupling agent, a polymer containing a polyamide resin, a polymer containing an acrylic resin, a polymer containing a polyurethane resin and a polymer containing a phenolic resin.

Claim 8

A device as claimed in any preceding claim characterised in that the orientation layer (5) is selected from at least one of a polyimide polymer, a polyamide polymer and a cellulosic polymer.

Claim 9

A device as claimed in any preceding claim characterised by colour filters (3) of different colours on different electrodes.

Claim 10

A method of manufacturing a coloured liquid crystal electro-optical device comprising the steps of: forming at least one electrode (2,7) on each of a pair of substrates (1,6), and forming a colour filter (3) on the electrode or electrodes of at least one of the substrates by electrodeposition, characterised by forming a protective layer (4) on the electrodeposited colour filter, and forming an orientation layer (5) on the protective layer.

Claim 11

A method of manufacturing a coloured liquid crystal electro-optical device comprising the steps of: forming at least one electrode (2,7) on each of a pair of substrates (1,6), and forming a colour filter (3) on the electrode or electrodes of at least one of the substrates by electrodeposition, characterised by forming a protective layer (4) on the electrodeposited colour filter, and forming an orientation layer (5) on the protective layer.

Claim 12

A method of manufacturing a coloured liquid crystal electro-optical device comprising the steps of: forming an electrode (2,7) on each of a pair of substrates (1,6) at least one of which has a plurality of separate conductive films, and forming a colour filter (3) having a plurality of differently coloured layers on the conductive films by electrodeposition using a solution containing an electrodepositable polymer and pigments dispersed therein, characterised by forming a protective layer (4) on the electrodeposited colour filter (3), and superposing an orientation layer (5) on the protective layer, the protective layer having high adhesion characteristics to both of the electrodeposited colour filter and the orientation layer and having a buffer capacity for reducing stress imposed at the interface therebetween.

Claim 13

A method of manufacturing a coloured liquid crystal electro-optical device comprising the steps of: forming an electrode (2,7) on each of a pair of substrates (1,6) at least one of which has a plurality of separate conductive films, and forming a colour filter (3) having a plurality of differently coloured layers on the conductive films by electrodeposition using a solution containing an electrodepositable polymer and pigments dispersed therein, characterised by forming a protective layer (4) on the electrodeposited colour filter (3), and superposing an orientation layer (5) on the protective layer, the protective layer having high adhesion characteristics to both of the electrodeposited colour filter and the orientation layer and having a buffer capacity for reducing stress imposed at the interface therebetween.

Claim 16

A method as claimed in any of claims 9 to 12 characterised in that the protective layer (4) is formed of a polymer with a group selected from at least one of an epoxy group, a silane coupling agent, a polyamide resin, an acrylic resin, a polyurethane resin and a phenolic resin.