Abstract:
A plasma processing apparatus for processing a substrate with a plasma is disclosed. The apparatus includes a first RF power source having a first RF frequency, and a process chamber. Further, the apparatus includes a substantially circular antenna operatively coupled to the first RF power source and disposed above a plane defined by the substrate when the substrate is disposed within the process chamber for processing. The substantially circular antenna being configured to induce an electric field inside the process chamber with a first RF energy generated by the first RF power source. The substantially circular antenna including at least a first pair of concentric loops in a first plane and a second pair of concentric loops in a second plane. The first pair of concentric loops and the second pair of concentric loops being substantially identical and symmetrically aligned with one another. The substantially circular antenna forming an azimuthally symmetric plasma inside the process chamber. The apparatus also includes a coupling window disposed between the antenna and the process chamber. The coupling window being configured to allow the passage of the first RF energy from the antenna to the interior of the process chamber. The coupling window having a first layer and a second layer. The second layer being configured to substantially suppress the capacitive coupling formed between the substantially circular antenna and the plasma. The substantially circular antenna and the coupling window working together to produce a substantially uniform process rate across the surface of the substrate.
Abstract:
A plasma confinement arrangement for controlling the volume of a plasma while processing a substrate inside a process chamber using a plasma enhanced process is disclosed. The arrangement includes a first magnetic bucket having a plurality of first magnetic elements. The first magnetic elements being configured for producing a first magnetic field inside the process chamber. The arrangement further includes a second magnetic bucket having a plurality of second magnetic elements. The second magnetic elements being configured for producing a second magnetic field inside the process chamber. The second magnetic field being configured to combine with the first magnetic field to produce a resultant magnetic field between the first magnetic bucket and the second magnetic bucket. The resultant magnetic field being configured to permit by-product gas from the processing to pass through while substantially confining the plasma within a volume defined at least by the process chamber and the resultant magnetic field.
Abstract:
A plasma processing apparatus for processing a substrate with a plasma is disclosed. The apparatus includes a first RF power source having a first RF frequency, and a process chamber. Further, the apparatus includes a substantially circular antenna operatively coupled to the first RF power source and disposed above a plane defined by the substrate when the substrate is disposed within the process chamber for processing. The substantially circular antenna being configured to induce an electric field inside the process chamber with a first RF energy generated by the first RF power source. The substantially circular antenna including at least a first pair of concentric loops in a first plane and a second pair of concentric loops in a second plane. The first pair of concentric loops and the second pair of concentric loops being substantially identical and symmetrically aligned with one another. The substantially circular antenna forming an azimuthally symmetric plasma inside the process chamber. The apparatus also includes a coupling window disposed between the antenna and the process chamber. The coupling window being configured to allow the passage of the first RF energy from the antenna to the interior of the process chamber. The coupling window having a first layer and a second layer. The second layer being configured to substantially suppress the capacitive coupling formed between the substantially circular antenna and the plasma. The substantially circular antenna and the coupling window working together to produce a substantially uniform process rate across the surface of the substrate.
Abstract:
A chemical fluid handling system is defined to supply a number of chemicals to a number of fluid inputs of a mixing manifold. The chemical fluid handling system includes a number of fluid recirculation loops for separately pre-conditioning and controlling the supply of each of the number of chemicals. Each of the fluid recirculation loops is defined to degas, heat, and filter a particular one of the number of chemical components. The mixing manifold is defined to mix the number of chemicals to form the electroless plating solution. The mixing manifold includes a fluid output connected to a supply line. The supply line is connected to supply the electroless plating solution to a fluid bowl within an electroless plating chamber.
Abstract:
An antenna arrangement for generating an electric field inside a process chamber is provided. Generally, the antenna arrangement comprises a first loop disposed around an antenna axis. The first loop comprises a first turn (704) with a first turn gap (1112); a second turn (708) with a second turn gap, where the second turn is concentric and coplanar with the first turn and spaced apart from the first turn, and where the antenna axis passes through the center of the first turn and second turn; and a first turn-second turn connector (1132) electrically connected between a second end of the first turn and a first end of the second turn comprising a spanning section between and coplanar with the first turn and the second turn and which spans the first turn gap and the second turn gap.
Abstract:
In a plasma processing system for processing substrates such as semiconductor wafers, deposition of polymer in an area (30) between a focus ring (16) and an electrostatic chuck (14) in a plasma processing chamber (10) is achieved by providing a clearance gas in a gap between the chuck and the focus ring. A series of channels delivers the clearance gas to the annular gap between the outer surface of the substrate support and the inner surface of the focus ring surrounding the substrate support. The clearance gas supplied to the annular gap is preferably a gas such as helium which will not affect the wafer processing operation. In the case of plasma etching, the clearance gas is supplied at a flow rate which is sufficient to block the migration of process gas and volatile by products thereof into the annular gap without adversely affecting edge etch performance.