Power feeding mechanism and method for controlling temperature of a stage
A heater power feeding mechanism is provided that divides a stage on which a substrate is placed into zones by using a plurality of heaters and can control a temperature of each of the zones. The heater power feeding mechanism includes a plurality of sets of heater terminals connected to any of the plurality of heaters by a segment unit when a set of the heater terminals is made one segment, a heater interconnection, and an interconnection structure configured to connect at least any of the plurality sets of the heater terminals with each other by using the heater interconnection by the segment unit.
1. A method for controlling a temperature of a stage by dividing a stage on which a substrate is placed into zones with a plurality of heaters and using a heater power feeding mechanism capable of controlling a temperature for each zone, the heater power feeding mechanism including a plurality sets of heater terminals connected to any of the plurality of heaters, each of the plurality of sets of heater terminals being connected to one or more of the plurality of heaters, the method comprising:
a step of determining connection locations between the plurality of sets of the heater terminals for connecting a group of the plurality of sets of heater terminals in parallel with each other to connect the plurality of heaters in parallel with each other; and
a step of controlling a zone configuration of the stage by connecting the determined connection locations between the plurality sets of the heater terminals in parallel with each other using a heater interconnection, thereby forming a temperature zone composed of the plurality of heaters connected in parallel with each other,
wherein the step of determining the connection locations comprises determining the connection locations between the plurality sets of the heater terminals based on the zone configuration depending on a condition in which the substrate is processed by using plasma, and
wherein the step of controlling the zone configuration comprises variably controlling the zone configuration of the stage by changing the determined connection locations between the plurality sets of the heater terminals using the heater interconnection.
2. A method for controlling a temperature of a stage by dividing a stage on which a substrate is placed into zones with a plurality of heaters and using a heater power feeding mechanism capable of controlling a temperature for each zone, the heater power feeding mechanism containing a plurality of groups of heater terminals, each of the groups including a plurality of sets of heater terminals connected to any of the plurality of heaters, the method comprising steps of:
determining connection locations between the plurality of sets of the heater terminals;
controlling a zone configuration of the stage by connecting the determined connection locations between the plurality sets of the heater terminals by being divided into the plurality of groups using a heater interconnection; and
connecting at least any of the plurality of heater terminals with a filter using the heater interconnection,
wherein the step of determining the connection locations comprises determining the connection locations between the plurality sets of the heater terminals based on the zone configuration depending on a condition in which the substrate is processed using plasma, stored in a memory part in advance, and
wherein the step of controlling the zone configuration comprises variably controlling the zone configuration of the stage by changing the determined connection locations between the plurality sets of the heater terminals by being divided into the groups using the heater interconnection.