PROBLEM TO BE SOLVED: To improve an yield of a perforated plate by easily performing the setting of a voltage applied to a piezoelectric vibrator according to the atomization performance of a fine hole region in each perforated plate.SOLUTION: A vibration perforated plate unit has: a piezoelectric vibrator 12 a perforated plate 14 having a fine hole region 34 for atomizing a liquid by the vibration of the piezoelectric vibrator 12 and a rank display 16 (rank identification means) for identifying a rank which is set according to the atomization performance of the fine hole region 34.COPYRIGHT: (C)2014,JPO&INPIT【課題】圧電振動子に印加する電圧の設定を、各々の多孔板における微細孔領域の霧化性能に応じて容易に行うことができるようにして、多孔板の歩留まりを向上させる。【解決手段】圧電振動子12と、該圧電振動子12の振動により液体を霧化する微細孔領域34を有する多孔板14と、微細孔領域34の霧化性能に応じて設定されるランクを識別可能にするランク表示16(ランク識別手段)と、を有している。【選択図】図1
