Patent ID: 8375888

Claim:
Apparatus for forming films on substrates, comprising a doctor blade assembly; a programmable robot for moving the doctor blade assembly along X, Y and Z-axes, the X and Y-axes being generally horizontal and the Z-axis being generally vertical, said doctor blade assembly comprising a doctor blade adapted to be mounted on the robot, said doctor blade comprising a body having a bottom face and spacers at opposite ends of the body of the doctor blade extending a predetermined distance down below the bottom face of the body for contacting a substrate and spacing the bottom face from the substrate, the spacers being adjustable relative to the body of the doctor blade for adjusting said predetermined distance according to the thickness of film to be formed on the substrate; and an adjustment mechanism associated with each spacer for adjusting said predetermined distance, said adjustment mechanism comprising a slot in the spacer extending generally along said Z-axis and a fastener extending through the at least one slot and into the body of the doctor blade, the fastener being adapted to be loosened to permit adjustment of the spacer and tightened to hold the spacer in adjusted position.