Patent ID: 6845731

Claim:
A polyimide processing tool for coating polyimide on a semiconductor wafer comprising: a polyimide apply tool for coating uncured polyimide onto the semiconductor wafer; a polyimide cure bake oven for bake curing the uncured polyimide after the polyimide is coated on to the semiconductor wafer; at least one wafer-transfer robot for automatically transferring at least one semiconductor wafer from the polyimide apply tool to the polyimide cure bake oven; a pause switch for pausing the operation of the wafer-transfer robot; a restart switch for restarting the operation of the wafer-transfer robot from the robot's paused state; a pause time monitoring means for monitoring the duration of the wafer-transfer robot's pause time; and a display unit and the pause time monitoring means includes a clock that generates a pause-start time stamp when the pause switch is activated, pausing the wafer-transfer robot, and generates a pause-stop time stamp when the restart switch is activated, restarting the wafer-transfer robot, wherein the pause-start time stamp and the pause-stop time stamp are displayed on the display unit.