Patent ID: 7169283

Claim:
An anodization apparatus comprising: a lamp that emits light; a stage provided at a position reached by the emitted light and capable of having a target substrate placed thereon with a treatment part of the target substrate facing upward; a cathode electrode that is provided on a way of the emitted light to reach the placed target substrate and that has an opening portion to allow the light to pass therethrough and has a conductor section not transmitting the light; a frame that forms a treatment tank when connected to said stage and has an opening portion; a seal member provided on a face of said frame opposed to the target substrate so as to be in contact with the target substrate in a ring form when said frame is opposed to and comes close to the placed target substrate, thereby establishing liquid sealability between said frame and the target substrate; a plurality of conductive contact members provided outside the ring form of said seal member; and a unit having a changeover switch and configured to supply an electric current to each of said plural contact members in sequence by a changeover of the changeover switch.