Processing apparatus and method of controlling processing apparatus using a touch-screen displaying an image-captured workpiece

A method of controlling a processing apparatus including a chuck table for holding a workpiece, a processing unit processing the workpiece held on the chuck table, an X-axis moving mechanism moving the chuck table and the processing unit relatively to each other in an X-axis direction, a Y-axis moving mechanism moving the chuck table and the processing unit relatively to each other in a Y-axis direction perpendicular to the X-axis direction, an image capturing unit capturing an image of the workpiece held on the chuck table, a rotating mechanism rotating the chuck table in a plane defined by an X-axis and a Y-axis, a control unit controlling at least the X-axis moving mechanism, the Y-axis moving mechanism, and the rotating mechanism, and display means connected to the control unit for communication therewith, for displaying an image of a portion of the workpiece captured by the image capturing unit and detecting coordinates of a position touched on the display means by an operator,

• the method comprising:
• operating the X-axis moving mechanism to move the chuck table or the processing unit in the X-axis direction for a distance depending on a distance that a finger is moved when the operator touches the display means with the finger and moves the finger in the X-axis direction, and moving the image of the portion of the workpiece captured by the image capturing unit in the X-axis direction on the display means;
• operating the Y-axis moving mechanism to move the chuck table or the processing unit in the Y-axis direction for a distance depending on a distance that a finger is moved when the operator touches the display means with the finger and moves the finger in the Y-axis direction, and moving the image of the portion of the workpiece captured by the image capturing unit in the Y-axis direction on the display means;
• operating the X-axis moving mechanism and the Y-axis moving mechanism to move the chuck table or the processing unit in the oblique direction for a distance depending on a distance that a finger is moved when the operator touches the display means with the finger and moves the finger in a direction oblique to the X-axis direction and the Y-axis direction, and moving the image of the portion of the workpiece captured by the image capturing unit in the oblique direction on the display means;
• and
• operating the rotating mechanism to rotate the chuck table for a distance depending on a distance that a finger is moved when the operator touches the display means with the finger and moves the finger in a rotating direction, and rotating the image of the portion of the workpiece captured by the image capturing unit on the display means
• wherein the workpiece includes a wafer having a plurality of devices formed on a face side thereof in respective areas that are demarcated by a plurality of intersecting projected dicing lines, and
• the method further comprises:
• displaying a first reference line and a second reference line that initiate from one of the projected dicing lines on both sides of the one of the projected dicing lines in the Y-axis direction when the operator touches the display means and positions the projected dicing lines on the wafer parallel to the X-axis direction;
• indexing-feeding the wafer in the Y-axis direction for a distance depending on a pre-registered distance between adjacent ones of the projected dicing lines when the operator touches the display means and moves the image of the portion of the workpiece captured by the image capturing unit in the Y-axis direction;
• and
• checking if the distance between the adjacent projected dicing lines is proper or not depending on whether the first reference line and the second reference line are superposed on a second projected dicing line on the wafer that is indexing-fed.