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    • 41. 发明申请
    • SUBSTRATE CLEANING DEVICE AND SUBSTRATE PROCESSING APPARATUS
    • 基板清洁装置和基板处理装置
    • US20080230096A1
    • 2008-09-25
    • US12052065
    • 2008-03-20
    • Shigeru KAWAMURATeruyuki Hayashi
    • Shigeru KAWAMURATeruyuki Hayashi
    • B08B7/00B08B5/00
    • H01L21/67115H01L21/67023
    • The device forms a flow of a back-side gas over a back-side surface of the end portion of the wafer undergoing a cleaning process executed by radiating an electromagnetic wave such as an ultraviolet ray onto the end portion of the wafer. During the cleaning process, a flow of front-side gas directed along a direction matching the direction of the back-side gas is also formed over the front-side surface of the end portion of the wafer. The flow velocity of the back-side gas is set higher than the flow velocity of the front-side gas. As a result, a descending gas current is created to flow from the wafer front side toward the wafer back side at a gap between the wafer end portion and a partitioning plate, which makes it possible to reliably prevent an active species formed on the back side of the wafer end portion from reaching over to the wafer front side.
    • 该装置在经过通过将诸如紫外线的电磁波辐射照射到晶片的端部执行的清洁处理的晶片的端部的背面表面上形成后侧气体的流动。 在清洗过程中,沿着与背面气体的方向一致的方向引导的前侧气体的流动也形成在晶片的端部的前侧表面上。 背面气体的流速被设定为高于前侧气体的流速。 结果,在晶片端部和分隔板之间的间隙处产生从晶片正面朝向晶片背面侧流动的下降气流,这使得可以可靠地防止形成在背面的活性物质 的晶片端部分到达晶片正面。