Patent ID: 9324589
Filing Date: 2016-04-26
CPC Classification: H01L,H05B

Claim Text:
1. A heating plate for a substrate support assembly used to support a semiconductor substrate in a semiconductor processing apparatus, the heating plate comprising: a first electrically insulating layer; a plurality of heater zones comprising at least first, second, third and fourth heater zones, the heater zones distributed across the first electrically insulating layer and operable to tune a spatial temperature profile on the substrate; a plurality of diodes including at least first, second, third, fourth, fifth, sixth, seventh, and eighth diodes; a plurality of first power lines comprising a first electrically conductive branch transmission line electrically connected to the first heater zone via the first diode and the second heater zone via the third diode and a third electrically conductive branch transmission line electrically connected to the first heater zone via the second diode and the second heater zone via the fourth diode and a second electrically conductive branch transmission line electrically connected to the third heater zone via the fifth diode and the fourth heater zone via the seventh diode and a fourth electrically conductive branch transmission line electrically connected to the third heater zone via the sixth diode and the fourth heater zone via the eighth diode; and a plurality of second power lines comprising at least a first electrically conductive common transmission line electrically connected to the first heater zone and the third heater zone and a second electrically conductive common transmission line electrically connected to the second heater zone and the fourth heater zone, wherein the first power lines and/or second power lines are spatially arranged to minimize electromagnetic fields above the heating plate and reduce plasma non-uniformity caused by such electromagnetic fields; wherein each heater zone includes at least one resistance heater element.