| 摘要 |
<p>PURPOSE:To improve a transparency of the titled filter by laminating a high melting point metal layer capable of an anodic oxidation and an aluminium layer in order, and then by oxidizing the aluminium layer to the alumina layer, and the high melting point metal layer to the high melting point metal oxide layer respectively followed by dying it. CONSTITUTION:A Ta layer 2 is coated on a glass electrode 1 followed by coating the Al layer 3 on the glass electrode 1, and then the anodic oxidation of the Al layer 3 is performed using the electrode as the anode. As the Ta metal layer presents under the Al metal layer, the unoxidized Al metal does not remain on the substrate in a dotted state. And then the anodic oxidation of the Ta layer is performed to form the tantalum oxide layer 12. The anodically oxidized substrate is fully washed with a desalted water, and then dyed. The dyed substrate has the good transparency and is the transparent, vivid, deep pink color, observing from each sides of the substrate, as the Al metal is completely oxidized to the alumina. By the method as mentioned above, the solid color filter not having the unoxidized part of Al, and having a good transparent and an excellent thermal resistance and light fast properties is obtd.</p> |
