Abstract: Planarizing machines, carrier heads for planarizing machines and methods for planarizing microelectronic-device substrate assemblies in mechanical or chemical-mechanical planarizing processes. In one embodiment of the invention, a carrier head includes a backing plate, a bladder attached to the backing plate, and a retaining ring extending around the backing plate. The backing plate has a perimeter edge, a first surface, and a second surface opposite the first surface. The second surface of the backing plate can have a perimeter region extending inwardly from the perimeter edge and an interior region extending inwardly from the perimeter region. The perimeter region, for example, can have a curved section extending inwardly from the perimeter edge of the backing plate or from a flat rim at the perimeter edge. The curved section can curve toward and/or away from the first surface to influence the edge pressure exerted against the substrate assembly during planarization.

Abstract: Planarizing machines, carrier heads for planarizing machines and methods for planarizing microelectronic-device substrate assemblies in mechanical or chemical-mechanical planarizing processes. In one embodiment of the invention, a carrier head includes a backing plate, a bladder attached to the backing plate, and a retaining ring extending around the backing plate. The backing plate has a perimeter edge, a first surface, and a second surface opposite the first surface. The second surface of the backing plate can have a perimeter region extending inwardly from the perimeter edge and an interior region extending inwardly from the perimeter region. The perimeter region, for example, can have a curved section extending inwardly from the perimeter edge of the backing plate or from a flat rim at the perimeter edge. The curved section can curve toward and/or away from the first surface to influence the edge pressure exerted against the substrate assembly during planarization.

Abstract: Planarizing machines, carrier heads for planarizing machines and methods for planarizing microelectronic-device substrate assemblies in mechanical or chemical-mechanical planarizing processes. In one embodiment of the invention, a carrier head includes a backing plate, a bladder attached to the backing plate, and a retaining ring extending around the backing plate. The backing plate has a perimeter edge, a first surface, and a second surface opposite the first surface. The second surface of the backing plate can have a perimeter region extending inwardly from the perimeter edge and an interior region extending inwardly from the perimeter region. The perimeter region, for example, can have a curved section extending inwardly from the perimeter edge of the backing plate or from a flat rim at the perimeter edge. The curved section can curve toward and/or away from the first surface to influence the edge pressure exerted against the substrate assembly during planarization.

Abstract: An apparatus is disclosed for confining the movement of an animal to a defined area. The device includes a transmitter that generates a coded radio signal through an antenna defining the area. The transmitter can modify the coded radio signal including modifying the code of the coded radio signal to modify a stimulus provided to the animal. The apparatus also has a portable radio receiver for decoding the coded radio signal for the stimulus provided to the animal. The delivery of stimulus can be arrested upon detection of a signal other than the coded signal. The portable radio receiver is attached to the animal and is positioned for delivering the stimulus to the animal.

Abstract: An apparatus for confining the movement of an animal to a defined area includes a transmitter that generates a continuous, coded radio signal through an antenna defining the area. The transmitter can variably modify the amplitude of the continuous, coded radio signal and variably modify the code of the continuous, coded radio signal, thereby modifying the type and rate of a stimulus provided to the animal. The apparatus also has a portable radio receiver for detecting the amplitude of the continuous, coded radio signal and for decoding the continuous, coded radio signal for the rate and type of stimulus provided to the animal. The portable radio receiver is attached to the animal and is positioned for delivering the stimulus to the animal in response only to the detected continuous, coded radio signal.