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    • 23. 发明专利
    • Differential pressure/absolute pressure converter for load lock control
    • 差压/绝对压力转换器,用于负载锁定控制
    • JP2004132698A
    • 2004-04-30
    • JP2002228745
    • 2002-08-06
    • Mks Instruments Incエムケーエス インストゥルメンツ インコーポレーテッド
    • GU YOUFANHOLCOMB GARRYWENZEL OLE
    • G01L13/06C23C14/56C23C16/44G01L11/00G01L21/12H01L29/84
    • PROBLEM TO BE SOLVED: To provide a differential pressure/absolute pressure converter for accurately and rapidly performing load lock control. SOLUTION: In the converter 10 and its conversion method, where an absolute pressure sensor for detecting an absolute pressure in a load lock chamber 60 and a differential pressure sensor for detecting the differential pressure between the surrounding atmospheric pressure and pressure in the load lock chamber 60 are combined, a control signal for opening an internal door 62 from the load lock chamber 60 to a vacuum treatment chamber 70, and a control signal for opening an external door 64 between the peripheral atmosphere and the load lock chamber 60 are provided. The converter 10 generates a signal for controlling the transition from a state for evacuating the pressure of the load lock chamber slowly by a pump to a state for evacuating the pressure of the load lock chamber rapidly by the pump at a pressure setting point that is determined in advance. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供用于精确和快速地执行加载锁定控制的差压/绝对压力转换器。 解决方案:在转换器10及其转换方法中,用于检测负载锁定室60中的绝对压力的绝对压力传感器和用于检测周围大气压力和负载压力之间的压差的压差传感器 组合了锁定室60,用于将内门62从负载锁定室60打开到真空处理室70的控制信号和用于打开周围大气和负载锁定室60之间的外部门64的控制信号 。 转换器10产生一个信号,用于控制从用于将负载锁定室的压力排出的状态缓慢地由泵转移到用于在确定的压力设定点处由泵快速抽出负载锁定室的压力的状态的转变的信号 提前。 版权所有(C)2004,JPO