Patent ID: 7925363
Filing Date: 2011-04-12
Classification: G05B,H01L

Abstract:
1. An error-correction assistance system for assisting correction of an error including an abnormality and a malfunction occurring at a drive mechanism provided in a protective tape joining apparatus for joining a protective tape to a semiconductor wafer, comprising; a sensor provided in a wafer supply/collection section to transmit a signal when a position of each of plural cassettes fails to be detected; a sensor provided in a robot arm to detect an actuation status of a drive part and a suction mechanism; a sensor provided in an alignment stage to detect a position of the semiconductor wafer; a sensor provided in a chuck table to monitor an actuation/stop status of the suction mechanism; a sensor in a tape supply unit to monitor an actuation/stop status of a drive mechanism unreeling the protective tape; a first sensor and a second sensor in a joining unit each to detect whether or not a joining roller normally moves upward/downward between a standby position and an action position; a reel sensor to detect a rotation status of a collection bobbin and to detect whether or not the collection bobbin becomes full of an unnecessary tape; a sensor in a tape cutting mechanism to detect whether or not a cutter unit normally moves upward/downward between an action position to cut the protective tape and a standby position located above, and a sensor to monitor a turn state of a support arm; a display unit for displaying information including actuation statuses on positions of the sensors; a storage unit for correlating details of errors occurring at the sensors with details of the error detected by the sensors and image data of a drive mechanism where an error occurs, and storing the correlated details and image data as error information; an error information selection unit for selecting error information corresponding to the detection signal transmitted from the sensors, reading out the error information from the storage unit, and allowing the display unit to display an image based on details of an error and image data each contained in the error information; an actuation status check unit for allowing the display unit to display a status whether or not the error occurrence site displayed by the error information selection unit is actuated normally; a first image switch unit for erasing display of an image representing the details of the error on the display unit after the actuation status check unit checks that the error occurrence site is actuated normally, and a display control unit, in a case of concurrent occurrence of errors at plural sites in one of a predetermined drive mechanism or plural drive mechanisms, for comparing details of the errors based on detection signals transmitted from respective sensors with each other, and allowing the display unit to display a stack of images where an image representing details of the error with high priority is superimposed on an image representing details of the error with low priority in consideration of a procedure for error correction, wherein when the actuation status check unit checks that the error occurrence site is normally actuated, the first image switch unit erases the error information displayed on the display unit, and allows the display unit to sequentially display an image representing another error information in a lower layer, and wherein said drive mechanism starts operating when said actuation status check unit checks correction of the error occurrence site.