| 摘要 |
<p>PURPOSE:To obtain a film for filters having a uniform thickness, by spin coating a substrate having a surface consisting of a different material previously with an aqueous solution of a surfactant, and coating the resultant film with a regular solution of a photosensitive material. CONSTITUTION:An aqueous solution of a surfactant in about 0.2-2wt% concentration is uniformly applied to a glass substrate 1 having a light shielding layer 2 partially on the surface thereof by the spin coating method. The degree of hydrophilicity of the glass surface (a) of the glass substrate 1 and the light shielding layer surface (b) is equal. A coating solution of a water-soluble photosensitive material is then applied to the film by the spin coating method, and dried to form a film. Thus, the aimed film for filter layers having a uniform thickness without uneven spectroscopic characteristics is formed by the abovementioned method.</p> |
