Patent ID: 8267735

Claim:
A method for pattern formation, comprising the steps of: preparing a substrate on which electrodes are provided with a space between the electrodes; forming, on the substrate on which the electrodes are provided in the space between the electrodes, partition walls which have a liquid-nonrepellent surface and have such a sectional form that, at least in the lower part of the partition wall, as the distance from the substrate increases, the size of the partition wall in a direction parallel to the substrate decreases, and the size of the partition walls in its part provided on the electrode in a direction parallel to the substrate is not less than 1 μm; applying a coating comprising an EL light emitting layer on an upper surface of the electrodes provided on the substrate in its part between the partition walls; forming the EL light emitting layer by one of a dispenser method and an ink jet method; and drying and solidifying the coating to form a solidified coating of which the ratio of the maximum thickness (Tmax) to the minimum thickness (Tmin), Tmax/Tmin, is not more than 130% as measured in the coating in its part between the lower ends of the partition walls adjacent to each other.