Abstract:
In one method for monitoring a semiconductor wafer during a spin processing operation, a capacitance value between a capacitance sensor (124) and the wafer (116) is measured as the wafer is being spun. When it is determined that the measured capacitance value has reached a desired, e.g., substantially constant, level, a signal (130) is generated indicating that the surface of the semiconductor wafer is in a desired condition, e.g., dry. In another method, light is directed toward a surface of the wafer as the wafer is being spun. The light is directed such that the light that reflects off of the surface of the wafer is substantially perpendicular to the surface of the wafer. The intensity of the light reflected off of the surface of the semiconductor wafer is measured. A signal indicating that the surface of the wafer is in a desired condition is generated when the measured intensity of the light reflected off of the surface of the wafer reaches an intensity level that corresponds to a measured intensity of light reflected off of the surface of the wafer when the surface is in the desired condition. In methods for spin drying a semiconductor wafer, spinning of the wafer is stopped in response to the signal. Apparatus for spin drying a semiconductor wafer including either a capacitance sensor or an interferometric sensor also are described.
Abstract:
A method for cleaning a semiconductor substrate is provided. The method initiates with generating acoustic energy oriented in a substantially perpendicular direction to a surface of a semiconductor substrate. Then, acoustic energy oriented in a substantially parallel direction to the surface of the semiconductor substrate is generated. Each orientation of the acoustic energy may be simultaneously generated or alternately generated. A system and an apparatus for cleaning a semiconductor substrate are also provided.
Abstract:
A method for cleaning a semiconductor substrate is provided. The method initiates with generating acoustic energy oriented in a substantially perpendicular direction to a surface of a semiconductor substrate. Then, acoustic energy oriented in a substantially parallel direction to the surface of the semiconductor substrate is generated. Each orientation of the acoustic energy may be simultaneously generated or alternately generated. A system and an apparatus for cleaning a semiconductor substrate are also provided.
Abstract:
A method for rinsing a semiconductor wafer in a module utilizing a fluid delivery ring is provided. The method includes providing a process bowl having a generally circular shape bottom wall, a sidewall that extends upwardly from the bottom wall to define a cylindrical chamber, and a plurality of channels in the sidewall that extend from the bottom wall to an upper edge of the sidewall. A fluid delivery ring is attached onto the sidewall of the process bowl. Utilizing the process bowl, a plurality of supply tubes is inserted into the fluid delivery ring. The fluid delivery ring has a plurality of ring inlet and outlet pairs and a plurality of respective slots. Fluid is supplied to the supply tubes, and fluid is directed onto a surface of the semiconductor wafer defined within the process bowl.
Abstract:
An apparatus for spin drying a semiconductor wafer includes a hollow core spindle and a chuck assembly having grippers for supporting a wafer at an edge thereof. A sleeve is disposed in the central opening of the spindle and a manifold is disposed in the upper end of the sleeve. A capacitance sensor is affixed to the manifold. In another apparatus, an arm having a capacitance sensor mounted thereon is positioned such that the capacitance sensor is disposed above a space to be occupied by a wafer that is supported by the grippers. An additional apparatus includes an arm having a light source and a detector mounted thereon. The light source directs light toward a surface of a wafer such that light that reflects off of the surface is substantially perpendicular to that surface. The detector is positioned to measure the intensity of the reflected light.