Advanced exhaust system
    5.
    发明授权

    公开(公告)号:US10109467B2

    公开(公告)日:2018-10-23

    申请号:US15170143

    申请日:2016-06-01

    Abstract: An apparatus for a semiconductor process includes an exhaust pipe coupled to a reaction chamber and a pump; a pressure control valve that is coupled to the exhaust pipe and configured to control a pressure value in the reaction chamber; a first pipe that is coupled to the exhaust pipe and etching gas source such that the first pipe is configured to provide an etching gas into the exhaust pipe; a second pipe that is coupled to the exhaust pipe and a radical generator such that the second pipe is configured to provide a radical into the exhaust pipe; and a third pipe that is coupled to the exhaust pipe and a diluted gas source such that the third pipe is configured to provide diluted gas into the exhaust pipe.

    Control wafer making device
    6.
    发明授权

    公开(公告)号:US10043691B2

    公开(公告)日:2018-08-07

    申请号:US15847823

    申请日:2017-12-19

    Abstract: A control wafer making device, a method of measuring an epitaxy thickness in a control wafer, and a method for monitoring a control wafer are provided. In various embodiments, the control wafer making device includes a wafer substrate removing element and an epitaxy forming element. In various embodiments, a control wafer includes a substrate, a recess, a blocking layer, and an epitaxy. The substrate has a surface, and the recess is in the surface of the substrate. The blocking layer is over the surface of the substrate other than the recess. The epitaxy is in the recess. In various embodiments, the thickness of the epitaxy of the control wafer is measured by a polarized light.

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