PATTERN FORMATION METHOD FOR ELECTROLUMINESCENT ELEMENT
First Claim
1. A method for pattern formation, comprising the steps of:
- forming, on a substrate, 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;
applying a coating liquid onto the substrate in its part between the partition walls adjacent to each other; 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.
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Abstract
There is provided an organic electroluminescent display having excellent practicality that can be produced by a simple method which does not cause electrode breaking and can realize even thickness of an electroluminescent layer. There is also provided a pattern formed object having a coating as an electroluminescent layer or the like having even thickness, for an electroluminescent element, formed using a coating liquid and provided in each area surrounded by partition walls provided on a substrate. The electroluminescent display comprises at least a substrate, an electrode provided on the substrate, protrusions which each are provided on the substrate so as to cover the ends of the electrode and are convexly curved in section relatively to the surface of the substrate, and an electroluminescent layer provided in each opening which is located on the electrode and defined by adjacent protrusions. The pattern formed object comprises: a substrate; partition walls provided on the substrate; and a coating stacked on the substrate in its part between the partition walls, wherein the partition walls have a sloped 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, in the coating, 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.
42 Citations
8 Claims
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1. A method for pattern formation, comprising the steps of:
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forming, on a substrate, 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; applying a coating liquid onto the substrate in its part between the partition walls adjacent to each other; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification