Patent ID: 8735298
Filing Date: 2014-05-27
Classification: H01J,H01L,H05B,Y10T

Abstract:
1. A method for control of a temperature of a substrate during plasma etching in a reactor of a plasma etching apparatus comprising: supporting the substrate on an electrostatic chuck comprising a temperature controlled base having a top surface, a metal or ceramic plate having a heater thermally coupled to an underside of the plate, the heater electrically insulated from said plate, a first layer of adhesive bonding said plate and said heater to the top surface of said temperature-controlled base; and a layer of dielectric material bonded to a top surface of said plate with a second layer of adhesive, the layer of dielectric material forming an electrostatic clamping mechanism for supporting the substrate; introducing a reactive gas or gases into the reactor; ionizing the reactive gas or gases into a plasma; and plasma etching the substrate with the plasma while controlling temperature across the substrate by supplying power to the heater while maintaining the base at a fixed temperature; wherein the thickness of the plate is such that a thermal pattern of the heater coupled to the underside of the plate is transferred therethrough.