PRODUCTION OF COLOR FILTER

摘要

PURPOSE:To obviate shrinkage in picture elements and to prevent leakage of temp. at a specified temp. or above at the time of curing a resist material by a heating treatment. CONSTITUTION:The resist material 2 contg. a black pigment is coated on a glass substrate 1 and is dried. A polyvinyl alcohol soln. 3 is then coated thereon and dried in order to prevent polymn. of the black colored resist material 2 with oxygen. A photomask 4 for black is thereafter placed thereon and is exposed by UV rays, following which the material is heated by a hot plate and the resist material is developed by a 1% Na2CO3 soln. and is washed with pure water. The resist material is then cured by heating on a convection oven. The temp. of the convection oven is so controlled as to be kept at the specified temp. or a below, or example, <=200 deg.C at all times. A black pattern 5 is formed in such a manner. Red, green and blue patterns 6-8 are formed in exactly the same manner. The color filter which obviates the shrinkage of the picture elements and the leakage of light is thereby stably produced.