Method and apparatus for controlling substrate processing apparatus

• US 5,898,588 A
• Filed: 10/11/1996
• Issued: 04/27/1999
• Est. Priority Date: 10/27/1995
• Status: Expired due to Term

• Current Assignee: SCREEN Holdings Co., Ltd.
• Original Assignee: SCREEN Holdings Co., Ltd.
• Inventors: Morimoto, Toru
• Primary Examiner(s): Elmore, Reba I.
• Assistant Examiner(s): PATEL, RAMESH B
• Application Number:
  US08/729,588
• Time in Patent Office: 928 Days
• Field of Search: 364/183, 364/468.15, 364/468.17, 364/468.01, 364/468.02, 364/184, 364/187, 364/185, 364/186, 364/474.11, 364/474.16, 414/217, 414/331, 414/416, 371/20.1, 371/20.5, 371/20.6, 371/30, 395/183.19, 395/185.01, 395/185.09
• US Class Current: 700/108
• CPC Class Codes: G05B 19/41815 characterised by the cooperation between machine tools, manipulators and conveyor or other workpiece supply system, workcell
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A method and apparatus for successively conveying substrates between a plurality of processing units, the processing units processing the substrates as required where, when one of the plurality of processing units raises an alarm to inform the user of the occurrence of some abnormality, the processing and conveyance of the substrates located on the transport path in and after either an alarm-raising processing unit or a predetermined skip-mode subject unit are completed; however the conveyance is suspended for the substrates located on the transport path before either the alarm-raising processing unit or the predetermined skip-mode subject unit.

Claims

1. A method of controlling a substrate processing apparatus, which apparatus successively conveys substrates to a plurality of processing units via a preset transport path and processes the substrates thus conveyed, said method comprising the step of:

executing a control sequence in a skip mode when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality, said skip mode control continuing and completing the processing and conveyance of each substrate located on said transport path in and after said alarm-raising processing unit, while completing the processing of any substrate in a particular processing unit located on said transport path before said alarm-raising processing unit but suspending the conveyance of those substrates into subsequent processing units.

2. The method in accordance with claim 1, said method further comprising the steps of:

selecting one of said skip mode and a processing complete mode;

executing the control sequence in the skip mode when such mode is selected; and

executing the control sequence in the processing complete mode when such mode is selected and when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality, said processing complete mode comprising the steps of;

preventing new substrates from being introduced into the process;

continuing and completing the processing and conveyance of each substrate already in the process; and

halting the process when all of the substrates already in the process have completed their processing.

3. A method of controlling a substrate processing apparatus, which apparatus successively conveys substrates to a plurality of processing units via a preset transport path and processes the substrates thus conveyed, said method comprising the steps of:

selecting at least one of said plurality of processing units as a skip-mode subject unit; and

executing a control sequence in a skip mode when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality, said skip mode continuing and completing the processing and conveyance of for each substrate located in said transport path in and after said skip-mode subject unit, while completing the processing of any substrate in a particular processing unit located on said transport path before said skip-mode subject unit but suspending the conveyance of those substrates into subsequent processing units.

4. The method in accordance with claim 3, said method further comprising the steps of:

selecting one of said skip mode and a processing complete mode;

executing the control sequence in the skip mode when such mode is selected; and

executing the control sequence in the processing complete mode when such mode is selected and when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality, said processing complete mode comprising the steps of;

preventing new substrates from being introduced into the process;

continuing and completing the processing and conveyance of each substrate already in the process; and

halting the process when all of the substrates already in the process have completed their processing.

5. The method in accordance with claim 3, wherein said skip-mode subject unit comprises a coating unit for coating a layer of chemical material on a substrate.

6. A method of controlling a substrate processing apparatus, which apparatus successively conveys substrates from a starting unit to a plurality of processing units via a preset transport path and processes the substrates thus conveyed, said method comprising the step of:

executing a control sequence in a first skip mode when a waiting time arises before transferring a substrate to a longest-processing time unit, which unit has the longest processing time for processing a substrate among said plurality of processing units,

said waiting time arising when the longest processing time is greater than an aggregate time to convey a substrate along said transport path from said start unit through said plurality of processing units,

said first skip mode continuing and completing the processing and conveyance of each substrate located on said transport path after said longest-processing time unit while suspending the conveyance for each substrate located on said transport path before said longest-processing time unit.

7. The method in accordance with claim 6, said method further comprising the step of:

executing a control sequence in a second skip mode when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality while said first skip mode is being executed, said second skip mode continuing and completing the processing and conveyance of each substrate existing on said transport path in and after said alarm-raising processing unit while completing the processing of any substrate in a particular processing unit located on said transport path before said alarm-raising processing unit but suspending the conveyance of those substrates into subsequent processing units.

8. The method in accordance with claim 6, said method further comprising the steps of:

selecting at least one of said plurality of processing units as a skip-mode subject unit; and

executing a control sequence in a second skip mode when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality while said first skip mode is being executed, said second skip mode continuing and completing the processing and conveyance of each substrate located on said transport path in and after said skip-mode subject unit while completing the processing of any substrate in a particular processing unit located on said transport path before said skip-mode subject unit but suspending the conveyance of those substrates into subsequent processing units.

9. A controlling apparatus for controlling a substrate processing apparatus, which substrate processing apparatus successively conveys substrates via a preset transport path and processes the substrates thus conveyed, said controlling apparatus comprising:

a plurality of processing units; and

a system for executing a control sequence in a skip mode when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality, said skip mode continuing and completing the processing and conveyance of for each substrate located on said transport path in and after said alarm-raising processing unit while completing the processing of any substrate in a particular processing unit located on said transport path before said alarm-raising processing unit but suspending the conveyance of those substrates into subsequent processing units.

10. The controlling apparatus in accordance with claim 9, said controlling apparatus further comprising:

a system for (i) selecting one of said skip mode and a processing complete mode;

(ii) executing the control sequence in the skip mode when such mode is selected; and

(iii) executing the control sequence in the processing complete mode when such mode is selected and when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality,

said processing complete mode;

(i) preventing new substrates from being introduced into the process;

(ii) continuing and completing the processing and conveyance of each *substrate already in the process; and

(iii) halting the process when all of the substrates already in the process have completed their processing.

11. A controlling apparatus for controlling a substrate processing apparatus, which substrate processing apparatus successively conveys substrates via a preset transport path and processes the substrates thus conveyed, said controlling apparatus comprising:

a system for selecting at least one of said plurality of processing units as a skip-mode subject unit; and

a system for executing a control sequence in a skip mode when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality, said skip mode continuing and completing the processing and conveyance of each substrate located on said transport path in and after said skip-mode subject unit while completing the processing of any substrate in a particular processing unit located on said transport path before said skip-mode subject unit but suspending the conveyance of those substrates into subsequent processing units.

12. The controlling apparatus in accordance with claim 11, said controlling apparatus further comprising:

a system for (i) selecting one of said skip mode and a processing complete mode;

(ii) executing the control sequence in the skip mode when such mode is selected; and

(iii) executing the control sequence in the processing complete mode when such mode is selected and when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality,

said processing complete mode;

(i) preventing new substrates from being introduced into the process;

(ii) continuing and completing the processing and conveyance of each *substrate already in the process; and

(iii) halting the process when all of the substrates already in the process have completed their processing.

13. The controlling apparatus in accordance with claim 11, wherein said skip-mode subject unit comprises a coating unit for coating a layer of chemical material on a substrate.

14. A controlling apparatus for controlling a substrate processing apparatus, which substrate processing apparatus successively conveys substrates from a starting unit to a plurality of processing units via a preset transport path and processes the substrates thus conveyed, said controlling apparatus comprising:

a system for executing a control sequence in a first skip mode when a waiting time arises before transferring a substrate to a longest-processing time unit, which unit has the longest processing time for processing a substrate among said plurality of processing units,

said waiting time arising when the longest processing time is greater than an aggregate time to convey a substrate along said transport path from said start unit through said plurality of processing units,

said first skip mode continuing and completing the processing and conveyance of each substrate located on said transport path after said longest-processing time unit while suspending the conveyance for each substrate located on said transport path before said longest-processing time unit.

15. The controlling apparatus in accordance with claim 14, said controlling apparatus further comprising:

a system for executing a control sequence in a second skip mode when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality while said first skip mode is being executed, said second skip mode continuing and completing the processing and conveyance of each substrate located on said transport path in and after said alarm-raising processing unit while completing the processing of any substrate in a particular processing unit located on said transport path before said alarm-raising processing unit but suspending the conveyance of those substrates into subsequent processing units.

16. The controlling apparatus in accordance with claim 14, said controlling apparatus further comprising:

a system for selecting at least one of said plurality of processing units as a skip-mode subject unit; and

a system for executing a control sequence in a second skip mode when one of said plurality of processing units raises an alarm to indicate the occurrence of an abnormality while said first skip mode is being executed, said second skip mode continuing and completing the processing and conveyance of each substrate located on said transport path in and after said skip-mode subject unit while completing the processing of any substrate in a particular processing unit located on said transport path before said skip-mode subject unit but suspending the conveyance of those substrates into subsequent processing units.