发明名称 WASHING TANK
摘要 PURPOSE:To heighten the washing effect by emmersing the lower end of a partition plate into a washing liquid to cut a space on the intake side off the side of throwing the liquid. CONSTITUTION:A work 17 is immersed into an etching liquid 12 in a tank 1 and held and immersed into a washing jig in a tank 2 from the side of throwing an etching draft 6. The jig 9 is forced into the side of a washing draft 7 with a grip 8 of the jig. When the grip 8 gets into contact with a partition 5, working is done on the washing draft side and then, the work is taken out. Then, the work is placed into a washing liquid 11 in a tank 3 high in the purity. As the partition plate 5 penetrates into the surface layer of a washing liquid 10 in the tank 2, no floating contaminant flows into the liquid surface on the washing draft 7 side. The work taken out is free from the attachment of the contaminant while the partition plate 5 prevents entry of the contaminating gas on the etching draft side into the washing draft side thereby improving the washing effect.
申请公布号 JPS56126930(A) 申请公布日期 1981.10.05
申请号 JP19800030378 申请日期 1980.03.12
申请人 HITACHI LTD;NITSUKAN DENSHI KK;HITACHI OME ELECTRONIC CO 发明人 NISHINE MITSUNOBU;YONEMURA HITOSHI;MIZUTANI TETSUYA
分类号 H01L21/304;C23F1/08 主分类号 H01L21/304
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