公开(公告)号：US20140154819A1

公开(公告)日：2014-06-05

申请号：US13690745

申请日：2012-11-30

Applicant: LAM RESEARCH CORPORATION

Inventor： Keith William Gaff ,  Tom Anderson ,  Keith Comendant ,  Ralph Jan-Pin Lu ,  Paul Robertson ,  Eric A. Pape ,  Neil Benjamin

IPC: H01L21/3065

CPC classification number: H01L22/14 ,  H01L21/67103 ,  H01L21/67109 ,  H01L21/67248 ,  H01L21/6831 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A semiconductor substrate support for supporting a semiconductor substrate in a plasma processing chamber includes a heater array comprising thermal control elements operable to tune a spatial temperature profile on the semiconductor substrate, the thermal control elements defining heater zones each of which is powered by two or more power supply lines and two or more power return lines wherein each power supply line is connected to at least two of the heater zones and each power return line is connected to at least two of the heater zones. A power distribution circuit is mated to a baseplate of the substrate support, the power distribution circuit being connected to each power supply line and power return line of the heater array. A switching device is connected to the power distribution circuit to independently provide time-averaged power to each of the heater zones by time divisional multiplexing of a plurality of switches.

Abstract translation: 用于在等离子体处理室中支撑半导体衬底的半导体衬底支撑件包括加热器阵列，其包括用于调节半导体衬底上的空间温度分布的热控制元件，热控制元件限定加热器区域，每个加热器区域由两个或更多个 电源线和两个或更多个电力返回线，其中每个电源线连接到至少两个加热器区域，并且每个电力返回线路连接到至少两个加热器区域。 配电电路配合到基板支架的基板上，配电电路连接到加热器阵列的每个电源线和电源返回线。 开关装置连接到配电电路，以通过多个开关的时分复用来独立地为每个加热器区提供时间平均功率。