Process for the production of liquid crystal display

A process for the production of a liquid crystal display device having a color filter, the process comprising:

• providing an assembly comprising, in order, a first support member, a plurality of first electrodes secured to the first support member, a liquid crystal layer, at least one second electrode and a second, substantially transparent support member, the assembly further comprising an imageable layer which, upon exposure to actinic radiation, can form three different colors, this imageable layer being disposed between the first and second support members;
• and
• exposing the assembly to actinic radiation so as to produce in the imageable layer a plurality of filter elements of first, second and third colors, said filter elements being aligned with the first electrodes, thereby forming a color filter lying between the first and second support members,
• wherein at least some of the filter elements are formed by applying a potential difference between some of the first electrodes and the second electrode while not applying a potential difference between others of the first electrodes and the second electrode, so that some parts of the liquid crystal layer are rendered substantially non-transmissive of radiation while other parts of the liquid crystal layer are rendered transmissive of radiation, and passing the actinic radiation through the liquid crystal layer, so that exposure of the imageable layer only occurs in parts of the imageable layer adjacent the transmissive parts of the liquid crystal layer.