摘要:
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 with a first turn gap; a second turn 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 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.
摘要:
A plasma processing system for processing a substrate which includes a single chamber, substantially azimuthally symmetric plasma processing chamber within which a plasma is both ignited and sustained for the processing. The plasma processing chamber has no separate plasma generation chamber. The plasma processing chamber has an upper end and a lower end. The plasma processing system includes a coupling window disposed at an upper end of the plasma processing chamber and an RF antenna arrangement disposed above a plane defined by the substrate when the substrate is disposed within the plasma processing chamber for the processing. The plasma processing system also includes an electromagnet arrangement disposed above the plane defined by the substrate. The electromagnet arrangement is configured so as to result in a radial variation in the controllable magnetic field within the plasma processing chamber in the region proximate the coupling window and antenna when at least one direct current is supplied to the electromagnet arrangement. The radial variation is effective to affect processing uniformity across the substrate. The plasma processing system additionally includes a dc power supply coupled to the electromagnet arrangement. The dc power supply has a controller to vary a magnitude of at least one direct current, thereby changing the radial variation in the controllable magnetic field within the plasma processing chamber in the region proximate the antenna to improve the processing uniformity across the substrate.
摘要:
A plasma processing system that includes a temperature management system and method that can achieve very accurate temperature control over a plasma processing apparatus is disclosed. In one embodiment, the temperature management system and method operate to achieve tight temperature control over surfaces of the plasma processing apparatus which interact with the plasma during fabrication of semiconductor devices. The tight temperature control offered by the invention can be implemented with combination heating and cooling blocks such that both heating and cooling can be provided from the same thermal interface.
摘要:
A device for cleaning a bevel edge of a semiconductor substrate. The device includes a lower electrode assembly that has a top surface and is adapted to support the substrate and an upper electrode assembly that has a bottom surface opposing the top surface. The lower and upper electrode assemblies generate plasma for cleaning the bevel edge of the substrate disposed between the top and bottom surfaces during operation. The device also includes a mechanism for suspending the upper electrode assembly over the lower support and adjusting the tilt angle and horizontal translation of the bottom surface relative to the top surface.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
Methods for orienting an upper electrode relative to a lower electrode are provided. The lower electrode is configured to have a desired existing orientation in a process chamber to define active and inactive process zones in the process chamber for processing a wafer. The method includes configuring each electrode with a reference surface, where a lower electrode reference surface is in the desired existing orientation and an upper electrode reference surface to be oriented parallel to the lower electrode reference surface. Then, temporarily holding the upper electrode reference surface oriented parallel to the lower electrode reference surface, and securing the upper electrode to a drive to mount the upper electrode reference surface parallel to the lower electrode reference surface. Other method configurations are also disclosed and illustrated.
摘要:
Positional relationships are established in a process chamber. A base is configured with a lower electrode surface to support a wafer, and an upper electrode has a lower surface. A drive mounted on the base has a linkage connected to the upper electrode. A fixture placed on the lower surface moves into a desired orientation of the lower electrode. With the upper electrode loosely connected by the linkage to the drive, the fixture transfers the desired orientation to the upper electrode. The linkage is tightened to maintain the desired orientation, the fixture is removed and a process exclusion insert is mounted to the upper electrode. The drive moves the upper electrode and the insert to define an inactive process zone between the upper electrode and the wafer on the lower electrode to protect a central area of the wafer during etching of a wafer edge environ around the central area.
摘要:
Positional relationships are established in a process chamber. A base is configured with a lower electrode surface to support a wafer, and an upper electrode has a lower surface. A drive mounted on the base has a linkage connected to the upper electrode. A fixture placed on the lower surface moves into a desired orientation of the lower electrode. With the upper electrode loosely connected by the linkage to the drive, the fixture transfers the desired orientation to the upper electrode. The linkage is tightened to maintain the desired orientation, the fixture is removed and a process exclusion insert is mounted to the upper electrode. The drive moves the upper electrode and the insert to define an inactive process zone between the upper electrode and the wafer on the lower electrode to protect a central area of the wafer during etching of a wafer edge environ around the central area.