CPC H10N 30/045 (2023.02) [H01J 37/32568 (2013.01); H01J 37/32715 (2013.01); H01J 2237/20228 (2013.01); H01J 2237/20235 (2013.01); H01J 2237/336 (2013.01); H10N 30/857 (2023.02)] | 3 Claims |
1. A workpiece to be polarized, comprising:
a base plate;
an electrode layer formed on a surface of the base plate, including a plurality of grounding electrodes and one or more grounding pads, the grounding pads being located at edges of the base plate, each grounding electrode being electrically connected to at least one of the grounding pads, the plurality of grounding electrodes being spatially separate from each other; and
a polymer thin film formed on the base plate over a portion of the electrode layer, the polymer thin film including a plurality of spatially separate thin film areas, each thin film area covering one of the plurality of grounding electrodes, the thin film leaving the grounding pads uncovered.
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