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    • 6. 发明申请
    • METHOD AND APPARATUS FOR CONTROLLING PLASMA UNIFORMITY
    • 用于控制等离子体均匀性的方法和装置
    • WO2009082763A2
    • 2009-07-02
    • PCT/US2008088351
    • 2008-12-24
    • APPLIED MATERIALS INCKUDELA JOZEFFURUTA GAKUSORENSEN CARL ACHOI SOO YOUNGWHITE JOHN M
    • KUDELA JOZEFFURUTA GAKUSORENSEN CARL ACHOI SOO YOUNGWHITE JOHN M
    • H01L21/205H05H1/34
    • H01J37/32623C23C16/345C23C16/5096H01J37/32082
    • Systems, methods, and apparatus involve a plasma processing chamber (200, 200', 200'') for depositing a film (231) on a substrate (232). The plasma processing chamber (200) includes a lid assembly (214) having a ground plate (225), a backing plate (240), and a non-uniformity (201) existing between the ground plate (225) and the backing plate (240). The non-uniformity (201) may interfere with RF wave uniformity and cause an impedance imbalance between portions of the ground plate (225) and backing plate (240). The non-uniformity (201) may include a structure (300) or a reduced spacing (400) of non-uniform surfaces. A reduced spacing (400) of non-uniform surfaces may exist where a first distance (d1, d2) between the ground plate (225) and the backing plate (240) at a first end (402) is different from a second distance (d3) between the ground plate (225) and the backing plate (240) at a second end (404). The structure (300) may be from 2cm to 10cm thick, cover from 20% to 50% of the backing plate (240), and be located away from a discontinuity (207) existing inside the chamber (200').
    • 系统,方法和装置包括用于在衬底(232)上沉积膜(231)的等离子体处理室(200,200',200“)。 等离子体处理室(200)包括具有接地板(225),背板(240)和存在于接地板(225)和背板(2)之间的不均匀性(201)的盖组件 240)。 不均匀性(201)可能会干扰RF波均匀性,并导致接地板(225)和背板(240)的部分之间的阻抗不平衡。 不均匀性(201)可以包括不均匀表面的结构(300)或减小的间隔(400)。 可以存在不均匀表面的减小的间隔(400),其中在第一端(402)处的接地板(225)和背板(240)之间的第一距离(d1,d2)不同于第二距离 d3)在第二端(404)处于接地板(225)和背板(240)之间。 结构(300)可以为2cm至10cm厚,覆盖背板(240)的20%至50%,并且位于远离存在于室(200')内部的不连续(207)的位置。