Patent ID: 8153185

Claim:
A method of forming a spacer on a substrate constituting an electron-beam light-emitting display panel, the method comprising: applying a first composition on the substrate, wherein the first composition includes a spacer material and a first resin solution which contains a first solvent and a first resin dissolved in the first solvent; forming a first intermediate layer by removing the first solvent from the first composition; applying a second composition on the first intermediate layer, wherein the second composition includes a spacer material and a second resin solution which contains a second solvent and a second resin dissolved in the second solvent in which the first resin is insoluble; forming a second intermediate layer by removing the second solvent from the second composition so as to form a laminated layer of the first intermediate layer and the second intermediate layer; patterning one of the first intermediate layer and the second intermediate layer, wherein the patterning is executed by a wet etching method which makes a lateral surface of the laminated layer contact with a solvent in which one of the first resin and the second resin is soluble and the other of the first resin and the second resin is insoluble, such that the one of the first intermediate layer and the second intermediate layer has a smaller cross-sectional area parallel to the substrate than the other of the first intermediate layer and the second intermediate layer, and a patterned laminated layer having a concave portion and a convex portion along the lateral surface respectively corresponding to the one of the first intermediate layer and the second intermediate layer and the other of the first intermediate layer and the second intermediate layer is formed; and baking the patterned laminated layer to remove the first resin and the second resin from the patterned laminated layer.