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    • 8. 发明申请
    • MULTIPLE FREQUENCY POWER FOR PLASMA CHAMBER ELECTRODE
    • 用于等离子体室电极的多个频率功率
    • WO2011156534A2
    • 2011-12-15
    • PCT/US2011/039689
    • 2011-06-08
    • APPLIED MATERIALS, INC.
    • HAMMOND, Edward, P., IVTANAKA, TsutomuBOITNOTT, ChristopherKUDELA, Jozef
    • H05H1/46H05H1/34H01L21/205
    • H01J37/32165H01J37/32091H01J37/32137
    • First through fifth RF power signals are respectively coupled to first through fifth RF connection points on an electrode of a plasma chamber. The first, second and third RF power signals have distinct first, second and third frequencies, respectively. The second and fourth RF power signals have the same frequency and opposite phase. The third and fifth RF power signals have the same frequency and opposite phase. The second through fifth RF connection points are geometrically arranged as four successive vertices of a quadrilateral convex polygon. The first RF connection point is closer to the center of the electrode. The center strong spatial distribution of the electric field produced by the first RF power signal is offset by the center weak spatial distribution of the electric field produced by the second through fifth RF power signals. An alternative embodiment omits the third and fifth RF power signals and the third and fifth RF connection points.
    • 第一至第五RF功率信号分别耦合到等离子体室的电极上的第一至第五RF连接点。 第一,第二和第三RF功率信号分别具有不同的第一,第二和第三频率。 第二和第四RF功率信号具有相同的频率和相位相位。 第三和第五RF功率信号具有相同的频率和相位相位。 第二至第五RF连接点在几何上被布置为四边形凸多边形的四个连续顶点。 第一RF连接点更靠近电极的中心。 由第一RF功率信号产生的电场的中心强空间分布由第二至第五RF功率信号产生的电场的中心弱空间分布抵消。 替代实施例省略了第三和第五RF功率信号以及第三和第五RF连接点。