PRODUCTION OF COLOR FILTER FOR LIQUID CRYSTAL DISPLAY BODY

摘要

PURPOSE:To enable arbitrary selection of the spectral sensitivity of a photosensitive material which changes in the spectral sensitivity in the wavelength corresponding to one of red, green and blue colors with a change in pH and to obtain a relief having a prescribed film thickness for every picture element by controlling the time for exposing said photosensitive material to a acidic or basic gaseous atmosphere. CONSTITUTION:The picture elements 5 of red, green and blue are formed on a transparent substrate 4 and the photosensitive material 6 which changes in the spectral sensitivity in the wavelength region corresponding to at least one of the red, green and blue colors with a change in pH is coated on the picture elements 5. High-polymer materials with which the spectral sensitivity of crosslinking agents change with a change in pH are variously selectable for the photosensitive material 6 which can be used. The substrate coated with the photosensitive material is exposed to the acidic or basic gaseous atmosphere and further while light is projected to the photosensitive material 6 through the transparent substrate 4 and the picture elements 5. The photosensitive material 6 after such photoirradiation is finally subjected to an adequate developing process to form the relief 7. The film thickness is controllable with the exposing time to the acidic or basic gaseous atmosphere in the above-mentioned manner, by which the film thickness of the picture elements is easily obtd. as desired.