Patent ID: 8545628
Filing Date: 2013-10-01
Classification: C23C,C30B,H01L,Y10T

Abstract:
1. A gate valve assembly configured to be used for reversibly sealing a material-transfer port of a CVD reaction chamber, the assembly comprising: a gate valve member that is configured so that, in a closed position, the material-transfer port of the CVD reaction chamber is sealed and, in an open position, materials can be transferred through the material-transfer port; a mechanism for moving the gate valve between open and closed positions; and a temperature control that maintains temperatures of the gate valve member in selected ranges of temperature when the gate valve member is in a closed position and the material-transfer port is sealed during reaction-chamber operation; wherein the gate valve member includes a plurality of apertures configured to inject gas streams into the reaction chamber during operation, and wherein the gate valve member is mounted in a chamber that is adjacent to the CVD reaction chamber and from which materials can be transferred to the CVD reaction chamber through the material transfer port when the gate valve member is in an open position.