Patent ID: 7694647
Filing Date: 2010-04-13
Classification: G03B,G03D,G03F,G05B,H01L,Y02P,Y10S,Y10T

Abstract:
1. A cluster tool for processing substrates, comprising: a first substrate processing chamber; a second substrate processing chamber, wherein the second substrate processing chamber is positioned at a first distance in a vertical direction from the first substrate processing chamber; a third substrate processing chamber; a fourth substrate processing chamber, wherein the fourth substrate processing chamber is positioned at a second distance in the vertical direction from the third substrate processing chamber; and a first robot assembly comprising: a robot that positions a substrate at one or more points generally contained within a horizontal plane; a vertical motion assembly having a vertical actuator assembly that positions the robot in a direction generally parallel to the vertical direction; a horizontal motion assembly having a motor that positions the robot in a direction generally parallel to the horizontal plane; a first robot arm that has a first substrate receiving surface and a second substrate receiving surface; and a second robot arm that has a first substrate receiving surface and a second substrate receiving surface, wherein the first substrate receiving surface on the first robot arm receives a substrate from the first processing chamber and the first substrate receiving surface on the second robot arm receives a substrate from the second processing chamber generally simultaneously, wherein the first substrate receiving surface of the first robot arm can be moved independently with respect to the second substrate receiving surface of the first robot arm and wherein a distance between the first substrate receiving surface of the first robot arm and the second substrate receiving surface of the first robot arm can be varied.