JP2005085992A - Substrate treatment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate treatment device for surely detecting the abnormality of an operating mechanism. <P>SOLUTION: This substrate treatment device is provided with a diagnostic mode for detecting the presence/absence of the abnormality of an operating mechanism owned by the device separately from a normal treatment mode for executing normal substrate treatment. In the diagnostic mode, the operating mechanism of conveyance robots TR1 to TR4 or each treatment part is made to execute an operation for diagnosis. The operation for diagnosis is an operation in the neighborhood of the movable critical point of the operating mechanism, and a heavy operation in a range different from that of a regular operation of the operating mechanism in the normal processing mode. Then, the presence/absence of the abnormality of the operating mechanism is decided based on the operation data when the operation for diagnosis is executed by the operating mechanism. The special diagnostic mode is set separately from the normal treatment mode, and the presence/absence of the abnormality of the operating mechanism is decided based on operation data acquired by making the operating mechanism to execute the heavy operation for diagnosis. Thus, it is possible to surely detect the abnormality of the operating mechanism which is unclarified in the normal treatment mode. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention circulates and conveys a substrate (hereinafter simply referred to as “substrate”) such as a semiconductor substrate, a glass substrate for a liquid crystal display, a glass substrate for a photomask, and a substrate for an optical disk among a plurality of processing units. The present invention relates to a substrate processing apparatus for performing predetermined processing such as photolithography on the substrate.

  As is well known, products such as semiconductors and liquid crystal displays are manufactured by performing a series of processes such as cleaning, resist coating, exposure, development, etching, interlayer insulation film formation, heat treatment, and dicing on the substrate. Has been. Among these various processes, for example, a plurality of processing units for performing resist coating processing, development processing, and heat treatment associated therewith are incorporated, and the substrate is circulated and transferred between the processing units by a transfer robot. A substrate processing apparatus that performs photolithography processing is widely used as a so-called coater and developer.

  Such a substrate processing apparatus is provided with a large number of operation mechanisms such as motors and cylinders, and the entire apparatus stops when the operation mechanism fails or is worn out. For this reason, conventionally, a function of counting the number of processed substrates or integrating the processing time is provided in the apparatus, thereby predicting a failure or wear of the operating mechanism (for example, see Patent Document 1). In addition, consumables and parts that are considered to be close to failure were exchanged in advance.

JP 2003-86479 A

  However, there are many cases where the abnormality determination based on the integrated processing time and the number of substrates does not match the actual abnormality. That is, even an operating mechanism that has not been used so much may be abnormal, or an operating mechanism that has been used for a considerable period may have no problem. In these cases, unnecessary parts are replaced, or work such as a sudden stoppage of the operation mechanism occurs suddenly, resulting in problems such as an increase in cost and a decrease in the operating rate of the apparatus. .

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a substrate processing apparatus capable of reliably detecting an abnormality in an operation mechanism.

  In order to solve the above-mentioned problems, the invention of claim 1 is directed to a substrate processing apparatus that performs a predetermined process on a substrate by circulating and transporting the substrate between a plurality of processing units. A receiving unit that receives a start of a diagnostic mode for detection, a control unit that controls the operating mechanism to perform a diagnostic operation when a start of a diagnostic mode is input from the receiving unit; and An acquisition unit that acquires operation data when the diagnosis operation is performed, and a determination unit that determines presence / absence of abnormality of the operation mechanism based on the operation data acquired by the acquisition unit.

  According to a second aspect of the present invention, in the substrate processing apparatus according to the first aspect of the invention, the diagnostic operation is an operation in the vicinity of the movable limit point of the operation mechanism.

  According to a third aspect of the present invention, in the substrate processing apparatus according to the first aspect of the present invention, the diagnostic operation is performed in a range different from a steady operation of the operation mechanism when the predetermined processing is performed on the substrate. It is said.

  According to a fourth aspect of the present invention, in the substrate processing apparatus according to any one of the first to third aspects of the present invention, the operation mechanism is a motor of a transfer robot that circulates and transfers a substrate.

  According to the first aspect of the present invention, when the start of the diagnosis mode is input, the operation mechanism performs a diagnosis operation, and based on the operation data when the operation mechanism performs the diagnosis operation, Since the presence / absence of abnormality is determined, it is possible to reliably detect an abnormality in the operating mechanism that cannot be found only by performing normal substrate processing.

  According to the second aspect of the present invention, since the diagnostic operation is an operation in the vicinity of the movable limit point of the operation mechanism, it is possible to reliably detect an abnormality in the operation mechanism that cannot be found in the steady operation. .

  According to the invention of claim 3, since the operation for diagnosis is an operation in a range different from the steady operation of the motion mechanism when performing predetermined processing on the substrate, the motion mechanism that cannot be determined by the steady operation It is possible to reliably detect any abnormality.

  According to the invention of claim 4, the operating mechanism is a motor of a transfer robot that circulates and transfers a substrate, and it is possible to reliably detect an abnormality of the motor that cannot be found only by performing normal substrate processing.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view of the substrate processing apparatus of the present embodiment. 2 is a front view of the liquid processing unit of the substrate processing apparatus, FIG. 3 is a front view of the heat treatment unit, and FIG. 4 is a diagram showing a peripheral configuration of the substrate mounting unit. 1 to 4 have an XYZ orthogonal coordinate system in which the Z-axis direction is the vertical direction and the XY plane is the horizontal plane in order to clarify the directional relationship.

  The substrate processing apparatus of this embodiment is an apparatus that applies an antireflection film or a photoresist film to a substrate such as a semiconductor wafer and performs development processing on the substrate after pattern exposure. In addition, the board | substrate used as the process target of the substrate processing apparatus which concerns on this invention is not limited to a semiconductor wafer, The glass substrate for liquid crystal displays etc. may be sufficient. Further, the processing content of the substrate processing apparatus according to the present invention is not limited to coating film formation and development processing, but may be etching processing or cleaning processing.

  The substrate processing apparatus of the present embodiment is configured by arranging five processing blocks of an indexer block 1, a bark block 2, a resist coating block 3, a development processing block 4 and an interface block 5 in parallel. An exposure apparatus (stepper), which is an external apparatus separate from the substrate processing apparatus, is connected to the interface block 5.

  The indexer block 1 takes a mounting table 11 on which a plurality of carriers C (four in this embodiment) are placed side by side, and takes out an unprocessed substrate W from each carrier C and also transfers a processed substrate W to each carrier C. A substrate transfer mechanism 12 is provided. The substrate transfer mechanism 12 includes a movable table 12a that can move horizontally along the mounting table 11 (along the Y direction), and a holding arm 12b that holds the substrate W in a horizontal posture is mounted on the movable table 12a. Has been. The holding arm 12b is configured to be capable of moving up and down (Z direction) on the movable table 12a, turning in a horizontal plane, and moving back and forth in the turning radius direction. As a result, the substrate transfer mechanism 12 can access the holding arms 12b to the carriers C to take out the unprocessed substrate W and store the processed substrate W. In addition to the FOUP (front opening unified pod) that stores the substrate W in a sealed space, the carrier C may be an OC (open cassette) that exposes the standard mechanical interface (SMIF) pod or the storage substrate W to the outside air. There may be.

  A bark block 2 is provided adjacent to the indexer block 1. A partition wall 13 is provided between the indexer block 1 and the bark block 2 for shielding the atmosphere. In order to transfer the substrate W between the indexer block 1 and the bark block 2, two substrate platforms PASS 1 and PASS 2 on which the substrate W is mounted are stacked on the partition wall 13.

  The upper substrate platform PASS1 is used to transport the substrate W from the indexer block 1 to the bark block 2. The substrate platform PASS1 has three support pins, and the substrate transfer mechanism 12 of the indexer block 1 moves the unprocessed substrate W taken out from the carrier C onto the three support pins of the substrate platform PASS1. Place. Then, the transfer robot TR1 of the bark block 2 described later receives the substrate W placed on the substrate platform PASS1. On the other hand, the lower substrate platform PASS <b> 2 is used for transporting the substrate W from the bark block 2 to the indexer block 1. The substrate platform PASS2 is also provided with three support pins, and the transport robot TR1 of the bark block 2 places the processed substrate W on the three support pins of the substrate platform PASS2. Then, the substrate transfer mechanism 12 receives the substrate W placed on the substrate platform PASS2 and stores it in the carrier C. In addition, the structure of the board | substrate mounting parts PASS3-PASS10 mentioned later is also the same as the board | substrate mounting parts PASS1 and PASS2.

  The substrate platforms PASS <b> 1 and PASS <b> 2 are provided so as to partially penetrate a part of the partition wall 13. The substrate platforms PASS1 and PASS2 are provided with optical sensors (not shown) for detecting the presence or absence of the substrate W, and the substrate transfer mechanism 12 and the bark block 2 are based on detection signals from the sensors. It is determined whether the transfer robot TR1 is ready to deliver the substrate W to the substrate platforms PASS1, PASS2.

  Next, the bark block 2 will be described. The bark block 2 is a processing block for applying and forming an antireflection film on the base of the photoresist film in order to reduce standing waves and halation generated during exposure. The bark block 2 includes a base coating processing unit BRC for coating and forming an antireflection film on the surface of the substrate W, two heat treatment towers 21 and 21 for performing heat treatment associated with the coating formation of the antireflection film, and base coating processing A transfer robot TR1 that transfers the substrate W to the section BRC and the heat treatment towers 21 and 21.

  In the bark block 2, the base coating treatment unit BRC and the heat treatment towers 21 and 21 are arranged to face each other with the transfer robot TR1 interposed therebetween. Specifically, the base coating treatment part BRC is located on the front side of the apparatus, and the two heat treatment towers 21 and 21 are located on the rear side of the apparatus. In addition, a heat partition (not shown) is provided on the front side of the heat treatment towers 21 and 21. By arranging the base coating processing part BRC and the heat treatment towers 21 and 21 apart from each other and providing a thermal partition, the thermal processing towers 21 and 21 are prevented from having a thermal influence on the base coating processing part BRC. .

  As shown in FIG. 2, the base coating processing unit BRC is configured by stacking and arranging three coating processing units BRC1, BRC2, and BRC3 having the same configuration in order from the bottom. If the three coating processing units BRC1, BRC2, and BRC3 are not particularly distinguished, these are collectively referred to as a base coating processing unit BRC. Each of the coating processing units BRC1, BRC2, and BRC3 includes a spin chuck 22 that sucks and holds the substrate W in a substantially horizontal posture and rotates the substrate W in a substantially horizontal plane, and an antireflection film on the substrate W held on the spin chuck 22 A coating nozzle 23 that discharges the coating liquid, a spin motor (not shown) that rotationally drives the spin chuck 22, a cup (not shown) that surrounds the periphery of the substrate W held on the spin chuck 22, and the like.

  As shown in FIG. 3, in the heat treatment tower 21 on the side close to the indexer block 1, six hot plates HP1 to HP6 for heating the substrate W to a predetermined temperature and the heated substrate W are cooled to a predetermined temperature. Cool plates CP <b> 1 to CP <b> 3 are provided that lower the temperature to a predetermined temperature and maintain the substrate W at the predetermined temperature. In the heat treatment tower 21, cool plates CP1 to CP3 and hot plates HP1 to HP6 are laminated in order from the bottom. On the other hand, the heat treatment tower 21 on the side far from the indexer block 1 has three adhesion reinforcements for heat-treating the substrate W in a vapor atmosphere of HMDS (hexamethyldisilazane) in order to improve the adhesion between the resist film and the substrate W. The processing units AHL1 to AHL3 are stacked in order from the bottom. In FIG. 3, piping wiring sections and spare empty spaces are assigned to the locations indicated by “x” marks.

  As described above, the coating processing units BRC1 to BRC3 and the heat treatment units (hot plates HP1 to HP6, cool plates CP1 to CP3, adhesion strengthening processing units AHL1 to AHL3) are stacked in multiple stages to reduce the space occupied by the substrate processing apparatus. And footprint can be reduced. Further, by arranging two heat treatment towers 21 and 21 in parallel, there is an advantage that maintenance of the heat treatment unit is facilitated and duct piping and power supply equipment necessary for the heat treatment unit need not be extended to a very high position. .

  FIG. 5 is a diagram for explaining the transfer robot TR1. FIG. 5A is a plan view of the transfer robot TR1, and FIG. 5B is a front view of the transfer robot TR1. The transfer robot TR1 includes two holding arms 6a and 6b that hold the substrate W in a substantially horizontal posture so as to be close to each other in the vertical direction. The holding arms 6a and 6b have a "C" shape at the top end in a plan view, and a plurality of pins 7 projecting inward from the inner side of the "C" shaped arm to surround the periphery of the substrate W. Supports from below.

  The base 8 of the transfer robot TR1 is fixedly installed on the apparatus base (apparatus frame). On the base 8, a guide shaft 9c is erected and the screw shaft 9a is erected and supported rotatably. A motor 9b that rotationally drives the screw shaft 9a is fixedly installed on the base 8. The lifting platform 10a is screwed onto the screw shaft 9a, and the lifting platform 10a is slidable with respect to the guide shaft 9c. With such a configuration, when the motor 9b rotationally drives the screw shaft 9a, the lifting platform 10a is guided by the guide shaft 9c to move up and down in the vertical direction (Z direction).

  Further, an arm base 10b is mounted on the lifting platform 10a so as to be able to turn around an axis along the vertical direction. A motor 10c for turning the arm base 10b is built in the elevator base 10a. The two holding arms 6a and 6b described above are arranged vertically on the arm base 10b. Each holding arm 6a, 6b is configured to be able to move forward and backward independently in the horizontal direction (in the turning radius direction of the arm base 10b) by a slide drive mechanism (not shown) mounted on the arm base 10b. .

  With such a configuration, as shown in FIG. 5A, the transfer robot TR1 includes two holding arms 6a and 6b that are individually provided on the substrate platforms PASS1 and PASS2 and the heat treatment tower 21, respectively. It is possible to access a coating processing unit provided in the base coating processing unit BRC and substrate mounting units PASS3 and PASS4, which will be described later, and transfer the substrate W between them.

  Next, the resist coating block 3 will be described. A resist coating block 3 is provided so as to be sandwiched between the bark block 2 and the development processing block 4. Between the resist coating block 3 and the bark block 2, an atmosphere blocking partition 25 is also provided. In order to transfer the substrate W between the bark block 2 and the resist coating block 3, two substrate platforms PASS 3 and PASS 4 on which the substrate W is mounted are stacked on the partition wall 25 in the vertical direction. The substrate platforms PASS3 and PASS4 have the same configuration as the substrate platforms PASS1 and PASS2 described above.

  The upper substrate platform PASS3 is used to transport the substrate W from the bark block 2 to the resist coating block 3. That is, the transport robot TR2 of the resist coating block 3 receives the substrate W placed on the substrate platform PASS3 by the transport robot TR1 of the bark block 2. On the other hand, the lower substrate platform PASS 4 is used to transport the substrate W from the resist coating block 3 to the bark block 2. That is, the transport robot TR1 of the bark block 2 receives the substrate W placed on the substrate platform PASS4 by the transport robot TR2 of the resist coating block 3.

  The substrate platforms PASS3 and PASS4 are provided partially through a part of the partition wall 25. The substrate platforms PASS3 and PASS4 are provided with optical sensors (not shown) for detecting the presence or absence of the substrate W, and the transfer robots TR1 and TR2 are mounted on the substrate based on detection signals from the sensors. It is determined whether or not the substrate W can be delivered to the parts PASS3 and PASS4. Further, under the substrate platforms PASS 3 and PASS 4, two water-cooled cool plates WCP for roughly cooling the substrate W are provided above and below the partition wall 25.

  The resist coating block 3 is a processing block for coating and forming a photoresist film on the substrate W on which the antireflection film is coated and formed in the bark block 2. In the present embodiment, a chemically amplified resist is used as the photoresist. The resist coating block 3 includes a resist coating processing section SC that coats and forms a photoresist film on an antireflection film that has been coated on the base, two heat treatment towers 31 and 31 that perform heat treatment associated with the resist coating processing, and resist coating. A transfer robot TR2 that transfers the substrate W to the processing unit SC and the heat treatment towers 31, 31 is provided.

  In the resist coating block 3, the resist coating processing unit SC and the heat treatment towers 31 and 31 are arranged to face each other with the transfer robot TR2 interposed therebetween. Specifically, the resist coating processing section SC is located on the front side of the apparatus, and the two heat treatment towers 31 and 31 are located on the rear side of the apparatus. A heat partition (not shown) is provided on the front side of the heat treatment towers 31 and 31. By disposing the resist coating processing part SC and the heat treatment towers 31 and 31 apart from each other and providing a thermal partition, the thermal treatment towers 31 and 31 are prevented from having a thermal influence on the resist coating processing part SC. .

  As shown in FIG. 2, the resist coating processing section SC is configured by stacking and arranging three coating processing units SC1, SC2, SC3 having the same configuration in order from the bottom. If the three coating processing units SC1, SC2, and SC3 are not particularly distinguished, they are collectively referred to as a resist coating processing unit SC. Each of the coating processing units SC1, SC2, SC3 discharges the photoresist onto the spin chuck 32 that sucks and holds the substrate W in a substantially horizontal posture and rotates it in a substantially horizontal plane, and the substrate W held on the spin chuck 32. A coating motor 33 for rotating the spin chuck 32 (not shown), a cup (not shown) surrounding the periphery of the substrate W held on the spin chuck 32, and the like.

  As shown in FIG. 3, in the heat treatment tower 31 on the side close to the indexer block 1, six heating parts PHP <b> 1 to PHP <b> 6 that heat the substrate W to a predetermined temperature are sequentially stacked from below. On the other hand, in the heat treatment tower 31 on the side far from the indexer block 1, cool plates CP4 to CP9 for cooling the heated substrate W and lowering the temperature to a predetermined temperature and maintaining the substrate W at the predetermined temperature are provided from below. They are arranged in order.

  Each of the heating units PHP1 to PHP6 includes a substrate temporary placement unit that places the substrate W on an upper position separated from the hot plate, in addition to a normal hot plate that places the substrate W and performs heat treatment. The heat treatment unit includes a local transport mechanism 34 (see FIG. 1) for transporting the substrate W between the hot plate and the temporary substrate placement unit. The local transport mechanism 34 is configured to be capable of moving up and down and moving back and forth, and includes a mechanism for cooling the substrate W in the transport process by circulating cooling water.

  The local transport mechanism 34 is installed on the opposite side to the transport robot TR2 across the hot plate and the temporary substrate placement section, that is, on the back side of the apparatus. The temporary substrate placement portion is open to both the transfer robot TR2 side and the local transfer mechanism 34 side, while the hot plate is open only to the local transfer mechanism 34 side and is closed to the transfer robot TR2 side. . Accordingly, both the transport robot TR2 and the local transport mechanism 34 can access the temporary substrate placement portion, but only the local transport mechanism 34 can access the hot plate.

  When the substrate W is carried into each of the heating units PHP1 to PHP6 having such a configuration, the transport robot TR2 first places the substrate W on the temporary substrate placement unit. Then, the local transport mechanism 34 receives the substrate W from the temporary substrate placement unit, transports it to the hot plate, and heats the substrate W. The substrate W that has been subjected to the heat treatment by the hot plate is taken out by the local transport mechanism 34 and transported to the temporary substrate placement unit. At this time, the substrate W is cooled by the cooling function provided in the local transport mechanism 34. Thereafter, the substrate W after the heat treatment transferred to the temporary substrate placement unit is taken out by the transfer robot TR2.

  In this way, in the heating units PHP1 to PHP6, the transfer robot TR2 only transfers the substrate W to the substrate temporary placement unit at room temperature, and does not transfer the substrate W to the hot plate. Temperature rise can be suppressed. Further, since the hot plate is opened only on the local transfer mechanism 34 side, the transfer robot TR2 and the resist coating processing unit SC are prevented from being adversely affected by the thermal atmosphere leaked from the hot plate. Note that the transfer robot TR2 directly transfers the substrate W to the cool plates CP4 to CP9.

  The configuration of the transfer robot TR2 is exactly the same as that of the transfer robot TR1. Therefore, the transfer robot TR2 has two holding arms individually for the substrate platforms PASS3 and PASS4, a heat treatment unit provided in the heat treatment tower 31, a coating processing unit provided in the resist coating processing unit SC, and a substrate mounting described later. The placement units PASS5 and PASS6 can be accessed, and the substrate W can be exchanged between them.

  Next, the development processing block 4 will be described. A development processing block 4 is provided so as to be sandwiched between the resist coating block 3 and the interface block 5. A partition wall 35 for shielding the atmosphere is also provided between the resist coating block 3 and the development processing block 4. In order to transfer the substrate W between the resist coating block 3 and the development processing block 4, two substrate platforms PASS 5 and PASS 6 on which the substrate W is mounted are stacked on the partition wall 35 in the vertical direction. . The substrate platforms PASS5 and PASS6 have the same configuration as the substrate platforms PASS1 and PASS2 described above.

  The upper substrate platform PASS5 is used for transporting the substrate W from the resist coating block 3 to the development processing block 4. That is, the transport robot TR3 of the development processing block 4 receives the substrate W placed on the substrate platform PASS5 by the transport robot TR2 of the resist coating block 3. On the other hand, the lower substrate platform PASS 6 is used to transport the substrate W from the development processing block 4 to the resist coating block 3. That is, the transport robot TR2 of the resist coating block 3 receives the substrate W placed on the substrate platform PASS6 by the transport robot TR3 of the development processing block 4.

  The substrate platforms PASS5 and PASS6 are provided so as to partially penetrate a part of the partition wall 35. The substrate platforms PASS5 and PASS6 are provided with optical sensors (not shown) for detecting the presence or absence of the substrate W, and the transport robots TR2 and TR3 are mounted on the substrate based on detection signals from the sensors. It is determined whether or not the substrate W can be delivered to the parts PASS5 and PASS6. Further, below the substrate platforms PASS 5 and PASS 6, two water-cooled cool plates WCP for roughly cooling the substrate W are provided vertically through the partition wall 35.

  The development processing block 4 is a processing block for performing development processing on the exposed substrate W. The development processing block 4 includes a development processing unit SD that performs development processing by supplying a developing solution to the substrate W on which the pattern has been exposed, two heat treatment towers 41 and 42 that perform heat treatment associated with the development processing, and development. A transfer robot TR3 that transfers the substrate W to the processing unit SD and the heat treatment towers 41 and 42 is provided. The transfer robot TR3 has the same configuration as the transfer robots TR1 and TR2 described above.

  As shown in FIG. 2, the development processing unit SD is configured by stacking five development processing units SD1, SD2, SD3, SD4, and SD5 having the same configuration in order from the bottom. Note that the five development processing units SD1 to SD5 are collectively referred to as the development processing unit SD unless particularly distinguished. Each of the development processing units SD1 to SD5 includes a spin chuck 43 that sucks and holds the substrate W in a substantially horizontal posture and rotates the substrate W in a substantially horizontal plane, and a nozzle that supplies a developer onto the substrate W held on the spin chuck 43. 44, a spin motor (not shown) for rotating the spin chuck 43, a cup (not shown) surrounding the periphery of the substrate W held on the spin chuck 43, and the like.

  As shown in FIG. 3, in the heat treatment tower 41 on the side close to the indexer block 1, five hot plates HP7 to HP11 for heating the substrate W to a predetermined temperature and the heated substrate W are cooled to a predetermined temperature. Cool plates CP <b> 10 to CP <b> 12 are provided that lower the temperature to a predetermined temperature and maintain the substrate W at the predetermined temperature. In the heat treatment tower 41, cool plates CP10 to CP12 and hot plates HP7 to HP11 are laminated in order from the bottom. On the other hand, in the heat treatment tower 42 on the side far from the indexer block 1, six heating parts PHP7 to PHP12 and a cool plate CP13 are laminated. Each of the heating units PHP7 to PHP12 is a heat treatment unit including a temporary substrate placement unit and a local transport mechanism, similarly to the heating units PHP1 to PHP6 described above. However, the temporary substrate placement portions of the heating units PHP7 to PHP12 are open on the side of the transport robot TR4 of the interface block 5, but are closed on the side of the transport robot TR3 of the development processing block 4. That is, the transport robot TR4 of the interface block 5 can access the heating units PHP7 to PHP12, but the transport robot TR3 of the development processing block 4 is not accessible. Note that the transfer robot TR3 of the development processing block 4 accesses the heat treatment unit incorporated in the heat treatment tower 41.

  Further, in the heat treatment tower 42, two substrate platforms PASS7 and PASS8 for transferring the substrate W between the development processing block 4 and the interface block 5 adjacent to the development processing block 4 are assembled in close proximity to each other. ing. The upper substrate platform PASS7 is used to transport the substrate W from the development processing block 4 to the interface block 5. That is, the transport robot TR4 of the interface block 5 receives the substrate W placed on the substrate platform PASS7 by the transport robot TR3 of the development processing block 4. On the other hand, the lower substrate platform PASS 8 is used to transport the substrate W from the interface block 5 to the development processing block 4. That is, the transport robot TR3 of the development processing block 4 receives the substrate W placed on the substrate platform PASS8 by the transport robot TR4 of the interface block 5. The substrate platforms PASS7 and PASS8 are open to both sides of the transport robot TR3 of the development processing block 4 and the transport robot TR4 of the interface block 5.

  Next, the interface block 5 will be described. The interface block 5 is a block which is provided adjacent to the development processing block 4 and delivers the substrate W to an exposure apparatus which is an external apparatus separate from the substrate processing apparatus. In the interface block 5 of the present embodiment, in addition to the transport mechanism 55 for transferring the substrate W to and from the exposure apparatus, two edge exposures for exposing the peripheral portion of the substrate W on which the photoresist film is formed are performed. And a transport robot TR4 that delivers the substrate W to the heating units PHP7 to PHP12 and the edge exposure unit EEW disposed in the development processing block 4.

  The edge exposure unit EEW, as shown in FIG. 2, applies light to the spin chuck 56 that sucks and holds the substrate W in a substantially horizontal posture and rotates the substrate W in a substantially horizontal plane, and the periphery of the substrate W held by the spin chuck 56. And a light irradiator 57 that exposes the light. The two edge exposure portions EEW are stacked in the vertical direction at the center of the interface block 5. The transfer robot TR4 disposed adjacent to the edge exposure unit EEW and the heat treatment tower 42 of the development processing block 4 has the same configuration as the transfer robots TR1 to TR3 described above.

  Further, as shown in FIG. 2, a return buffer RBF for returning the substrate is provided below the two edge exposure units EEW, and two substrate platforms PASS9 and PASS10 are stacked on the lower side. Is provided. When the development processing block 4 cannot perform the development processing of the substrate W due to some trouble, the return buffer RBF performs the post-exposure heating processing by the heating units PHP7 to PHP12 of the development processing block 4, and then the substrate W Is temporarily stored. The return buffer RBF is configured by a storage shelf that can store a plurality of substrates W in multiple stages. The upper substrate platform PASS9 is used to transfer the substrate W from the transport robot TR4 to the transport mechanism 55, and the lower substrate platform PASS10 transfers the substrate W from the transport mechanism 55 to the transport robot TR4. It is used to pass. Note that the transfer robot TR4 accesses the return buffer RBF.

  As shown in FIG. 2, the transport mechanism 55 includes a movable base 55a that can move horizontally in the Y direction, and a holding arm 55b that holds the substrate W is mounted on the movable base 55a. The holding arm 55b is configured to be capable of moving up and down, turning and moving in the turning radius direction with respect to the movable base 55a. With such a configuration, the transport mechanism 55 transfers the substrate W to and from the exposure apparatus, transfers the substrate W to the substrate platforms PASS9 and PASS10, and transfers the substrate W to the send buffer SBF for substrate transfer. Store and remove. The send buffer SBF temporarily stores and stores the substrate W before the exposure processing when the exposure apparatus cannot accept the substrate W, and is configured by a storage shelf that can store a plurality of substrates W in multiple stages. .

  The indexer block 1, the bark block 2, the resist coating block 3, the development processing block 4 and the interface block 5 are always supplied with clean air as a downflow, and the process is caused by the rising of particles and airflow in each block. To avoid the negative effects of. In addition, the inside of each block is kept at a slightly positive pressure with respect to the external environment of the apparatus to prevent entry of particles and contaminants from the external environment.

  The indexer block 1, the bark block 2, the resist coating block 3, the development processing block 4 and the interface block 5 described above are units obtained by mechanically dividing the substrate processing apparatus of the present embodiment. Each block is assembled to an individual block frame (frame body), and the substrate processing apparatus is configured by connecting the block frames.

  On the other hand, in the present embodiment, the transport control unit for transporting the substrate is configured separately from the block that is mechanically divided. In the present specification, such a transport control unit for transporting a substrate is referred to as a “cell”. One cell includes a plurality of processing units that perform predetermined processing on the substrate and a transfer robot that circulates and transfers the substrate to the plurality of processing units. Each of the substrate placement units described above functions as an entrance substrate placement unit for receiving the substrate W in the cell or an exit substrate placement unit for delivering the substrate W from the cell. And delivery of the board | substrate W between cells is also performed via a board | substrate mounting part. In this specification, in addition to the heat treatment unit and the coating / development processing unit, a substrate placement unit that simply places the substrate W is also included in the “processing unit” in the sense of the transfer target unit, and the substrate transfer The mechanism 12 and the transport mechanism 55 are also included in the transport robot.

  The substrate processing apparatus of the present embodiment includes six cells: an indexer cell, a bark cell, a resist coating cell, a development processing cell, a post-exposure bake cell, and an interface cell. The indexer cell includes a mounting table 11 and a substrate transfer mechanism 12 and has the same configuration as the indexer block 1 which is a unit that is mechanically divided as a result. The bark cell includes a base coating processing unit BRC, two heat treatment towers 21 and 21, and a transfer robot TR1. This bark cell also has the same configuration as the bark block 2, which is a mechanically divided unit. Further, the resist coating cell includes a resist coating processing unit SC, two heat treatment towers 31 and 31, and a transfer robot TR2. This resist coating cell also has the same configuration as the resist coating block 3, which is a mechanically divided unit.

  On the other hand, the development processing cell includes a development processing unit SD, a heat treatment tower 41, and a transport robot TR3. As described above, the transfer robot TR3 cannot access the heating units PHP7 to PHP12 of the heat treatment tower 42, and the heat treatment tower 42 is not included in the development processing cell. In this respect, the development processing cell is different from the development processing block 4 which is a mechanically divided unit.

  The post-exposure bake cell includes a heat treatment tower 42 located in the development processing block 4, an edge exposure unit EEW located in the interface block 5, and a transport robot TR 4. That is, the post-exposure bake cell extends over the development processing block 4 and the interface block 5 which are mechanically divided units. Thus, since one cell is comprised including the heating parts PHP7 to PHP12 and the transfer robot TR4 for performing the post-exposure heat treatment, the substrate W after the exposure is quickly carried into the heating parts PHP7 to PHP12 and subjected to the heat treatment. It can be performed. Such a configuration is suitable when a chemically amplified resist that needs to be heat-treated as soon as possible after pattern exposure is used.

  The substrate platforms PASS7 and PASS8 included in the heat treatment tower 42 are interposed for transferring the substrate W between the transfer robot TR3 of the development processing cell and the transfer robot TR4 of the post-exposure bake cell.

  The interface cell includes a transport mechanism 55 that transfers the substrate W to and from an exposure apparatus that is an external apparatus. This interface cell is different from the interface block 5 which is a mechanically divided unit in that the interface cell does not include the transport robot TR4 and the edge exposure unit EEW. The substrate platforms PASS9 and PASS10 provided below the edge exposure unit EEW are interposed for the transfer of the substrate W between the post-exposure bake cell transfer robot TR4 and the interface cell transfer mechanism 55.

  Next, the control mechanism of the substrate processing apparatus of this embodiment will be described. FIG. 6 is a block diagram showing an outline of the control mechanism. As shown in the figure, the substrate processing apparatus of the present embodiment includes a control hierarchy including three levels of a main controller MC, a cell controller CC, and a unit controller. The hardware configuration of the main controller MC, cell controller CC, and unit controller is the same as that of a general computer. That is, each controller stores a CPU that performs various arithmetic processes, a ROM that is a read-only memory that stores basic programs, a RAM that is a readable and writable memory that stores various information, and control applications and data. A magnetic disk or the like is provided.

  One main controller MC in the first hierarchy is provided for the entire substrate processing apparatus, and is mainly responsible for management of the entire apparatus, management of the main panel MP, and management of the cell controller CC. The main panel MP functions as a display for the main controller MC. Various commands can be input to the main controller MC from the keyboard KB. The main panel MP may be configured by a touch panel, and input work may be performed from the main panel MP to the main controller MC. The start of the diagnostic mode is accepted by the main panel MP or the keyboard KB, which will be described later.

  The second-level cell controller CC is individually provided for each of the six cells (indexer cell, bark cell, resist coating cell, development processing cell, post-exposure bake cell, and interface cell). Each cell controller CC is mainly in charge of substrate transport management and unit management in the corresponding cell. Specifically, the cell controller CC of each cell sends information that the substrate W has been placed on a predetermined substrate placement unit to the cell controller CC of the adjacent cell, and the cell controller CC of the cell that has received the substrate W. Transmits / receives information that information indicating that the substrate W has been received from the substrate platform is returned to the cell controller CC of the original cell. Such transmission / reception of information is performed via the main controller MC. Each cell controller CC gives information to the transfer robot controller TC that the substrate W has been loaded into the cell, and the transfer robot controller TC controls the transfer robot to transfer the substrate W in the cell according to a predetermined procedure (flow). Circulate and convey according to recipe. The transfer robot controller TC is a control unit realized by a predetermined application operating on the cell controller CC.

  In addition, as the unit controller of the third hierarchy, for example, a spin controller or a bake controller is provided. The spin controller directly controls spin units (coating processing unit and development processing unit) arranged in the cell in accordance with instructions from the cell controller CC. Specifically, the spin controller adjusts the rotation speed of the substrate W by controlling a spin motor of the spin unit, for example. Further, the bake controller directly controls the heat treatment units (hot plate, cool plate, heating unit, etc.) arranged in the cell in accordance with instructions from the cell controller CC. Specifically, the bake controller adjusts the plate temperature and the like by controlling, for example, a heater built in the hot plate.

  As described above, in this embodiment, the control load of each controller is reduced by adopting a three-level control hierarchy. In addition, each cell controller CC manages the substrate transfer schedule only in each cell without considering the transfer schedule in the adjacent cell, so the burden of transfer control on each cell controller CC is reduced. . As a result, the throughput of the substrate processing apparatus can be improved.

  Next, the operation of the substrate processing apparatus of this embodiment will be described. Here, first, a procedure for circulating and transporting the substrate W in the substrate processing apparatus will be briefly described. First, the substrate transfer mechanism 12 of the indexer cell (indexer block 1) takes out an unprocessed substrate W from a predetermined carrier C and places it on the upper substrate platform PASS1. When an unprocessed substrate W is placed on the substrate platform PASS1, the transfer robot TR1 of the bark cell receives the substrate W using one of the holding arms 6a and 6b. Then, the transfer robot TR1 transfers the received unprocessed substrate W to any one of the adhesion reinforcement processing units AHL1 to AHL3. The substrate W that has been subjected to the adhesion strengthening process is taken out by the transport robot TR1, transported to one of the cool plates CP1 to CP3, and cooled. The cooled substrate W is transported to one of the coating processing units BRC1 to BRC3 by the transport robot TR1, and the coating liquid for the antireflection film is spin-coated.

  After the coating process is completed, the substrate W is transferred to one of the hot plates HP1 to HP6 by the transfer robot TR1. When the substrate W is heated by the hot plate, the coating liquid is dried and a base antireflection film is formed on the substrate W. Thereafter, the substrate W taken out from the hot plate by the transfer robot TR1 is transferred again to any one of the cool plates CP1 to CP3 and cooled. At this time, the substrate W may be cooled by the cool plate WCP. The cooled substrate W is placed on the substrate platform PASS3 by the transport robot TR1.

  When the substrate W on which the antireflection film is formed is placed on the substrate platform PASS3, the transfer robot TR2 of the resist coating cell receives the substrate W and transports it to one of the coating processing units SC1 to SC3. In the coating processing units SC1 to SC3, a photoresist is spin-coated on the substrate W. In addition, since precise substrate temperature control is required for the resist coating process, the substrate W may be transported to any one of the cool plates CP4 to CP9 immediately before the substrate W is transported to the coating processing units SC1 to SC3.

  After the resist coating process is completed, the substrate W is transferred to one of the heating units PHP1 to PHP6 by the transfer robot TR2. When the substrate W is heated by the heating units PHP1 to PHP6, the solvent component in the photoresist is removed, and a resist film is formed on the substrate W. Thereafter, the substrate W taken out from the heating units PHP1 to PHP6 by the transport robot TR2 is transported to one of the cool plates CP4 to CP9 and cooled. The cooled substrate W is placed on the substrate platform PASS5 by the transport robot TR2.

  When the substrate W on which the resist film is formed is placed on the substrate platform PASS5, the transfer robot TR3 of the development processing cell receives the substrate W and places it on the substrate platform PASS7 as it is. Then, the substrate W placed on the substrate platform PASS7 is received by the post-exposure bake cell transport robot TR4 and carried into the edge exposure unit EEW. In the edge exposure unit EEW, exposure processing of the peripheral portion of the substrate W is performed. The substrate W that has undergone the edge exposure process is placed on the substrate platform PASS9 by the transport robot TR4. The substrate W placed on the substrate platform PASS9 is received by the interface cell transport mechanism 55, carried into an exposure apparatus outside the apparatus, and subjected to pattern exposure processing.

  The substrate W that has been subjected to the pattern exposure processing is returned to the interface cell again, and is placed on the substrate platform PASS10 by the transport mechanism 55. When the exposed substrate W is placed on the substrate platform PASS10, the post-exposure bakecell transport robot TR4 receives the substrate W and transports it to any of the heating units PHP7 to PHP12. In the heating parts PHP7 to PHP12, a heat treatment (Post Exposure Bake) for uniformly diffusing a product generated by the photochemical reaction during the exposure into the resist film is performed. The substrate W that has been subjected to the post-exposure heat treatment is taken out by the transport robot TR4, transported to the cool plate CP13, and cooled. The cooled substrate W is placed on the substrate platform PASS8 by the transport robot TR4.

  When the substrate W is placed on the substrate platform PASS8, the transport robot TR3 of the development processing cell receives the substrate W and transports it to one of the development processing units SD1 to SD5. In the developing units SD1 to SD5, a developing solution is supplied to the substrate W to advance the developing process. After the development process is finished, the substrate W is transferred to one of the hot plates HP7 to HP11 by the transfer robot TR3, and then transferred to one of the cool plates CP10 to CP12.

  Thereafter, the substrate W is placed on the substrate platform PASS6 by the transport robot TR3. The substrate W placed on the substrate platform PASS6 is placed on the substrate platform PASS4 as it is by the transfer robot TR2 of the resist coating cell. Further, the substrate W placed on the substrate platform PASS4 is placed on the substrate platform PASS2 as it is by the transfer robot TR1 of Barxel. The processed substrate W placed on the substrate platform PASS2 is stored in a predetermined carrier C by the substrate transfer mechanism 12 of the indexer cell. In this way, a series of photolithography processes are completed.

  The series of processes as described above are executed when the substrate processing apparatus is in the normal processing mode. However, the substrate processing apparatus according to the present embodiment detects an abnormality in the operation mechanism in addition to the normal processing mode. A diagnostic mode is provided. That is, the substrate processing apparatus is provided with a number of operation mechanisms such as a motor, a cylinder, an actuator, a discharge pump, and a heater. Such an operating mechanism may operate without any problem in the normal processing mode even if a slight abnormality occurs. The diagnostic mode is a special mode for detecting even a slight abnormality of such an operating mechanism. Hereinafter, processing in the diagnosis mode will be described.

  Generally, maintenance is performed on a substrate processing apparatus periodically or as necessary. The diagnosis mode is preferably executed during such maintenance. The transition to the diagnostic mode is made when the operator inputs the start of the diagnostic mode from the main panel MP or the keyboard KB. When inputting the start of the diagnosis mode, all operation mechanisms provided in the substrate processing apparatus may be targeted, a specific cell may be targeted, or only a specific processing unit or a transfer robot may be targeted. good. Here, it is assumed that the start of the diagnosis mode is input for the transfer robot TR1 of the bark cell (bark block 2). Of course, the normal substrate processing as described above is not performed when the diagnosis mode is executed.

  When the start of the diagnostic mode is input from the main panel MP or the keyboard KB, an instruction to execute the diagnostic mode is transmitted from the main controller MC to the cell controller CC of the bark cell. The cell controller CC gives an instruction to execute the diagnosis mode to the transfer robot controller TC, and controls the transfer robot TR1 so that the transfer robot controller TC that receives the instruction performs a diagnosis operation. More specifically, the operation with the longest moving distance from the lowest position to the highest position is performed by the transfer robot TR1 at the highest speed as a diagnostic operation. At the same time, the arm base 10b is turned at the highest speed, and the holding arms 6a and 6b are moved back and forth at the highest speed. The transfer robot controller TC causes the transfer robot TR1 to repeat such a severe diagnosis operation several times. Then, the transfer robot controller TC acquires operation data when the transfer robot TR1 performs the above-described diagnosis operation. The operation data includes, for example, the current values of the motors 9b and 10c, the displacement of the holding arms 6a and 6b, the transfer operation time, the vibration frequency of the transfer robot TR1, and the like.

  The operation data acquired in this way is transmitted from the transfer robot controller TC to the main controller MC via the cell controller CC. The main controller MC that has received the operation data determines whether there is an abnormality in the operation mechanism of the transport robot TR1 based on the operation data. Specifically, it is determined whether or not the worst value of each operation data is within a predetermined range. If the worst value is within the predetermined range, it is determined to be normal, and if it is out of the predetermined range, an abnormality is detected. Judge. For example, if the maximum transfer operation time when the diagnosis operation is repeated several times is equal to or less than a predetermined time, the transfer operation mechanism of the transfer robot TR1 is determined to be normal, and if the predetermined time is exceeded, an abnormality is determined. To be judged.

  When it is determined that the operation mechanism of the transfer robot TR1 is abnormal, a warning to that effect is issued from the main panel MP or the like. Then, the operator performs necessary measures such as repair and replacement of the operating mechanism determined to be abnormal.

  In the above description, the diagnosis mode is executed for the bark cell transfer robot TR1, but the diagnosis mode may be executed for the entire bark cell. In this case, the cell controller CC of the bark cell that received the instruction to execute the diagnostic mode gives the instruction of the diagnostic mode to each unit controller (spin controller and bake controller) in addition to the transfer robot controller TC, and the unit controller that has received the instruction Controls each processing unit to perform a diagnostic operation. For example, the spin controller controls the coating processing units BRC1 to BRC3 to cause the coating processing units BRC1 to BRC3 to repeatedly stop and rotate the spin motor as diagnostic operations, or to discharge the coating liquid from the coating nozzle 23. And repeatedly stopping and stopping. In addition, the bake controller controls the heat treatment unit to cause the heat treatment unit to repeatedly raise and lower the temperature to the maximum value and the minimum value as diagnostic operations, or to reduce the pressure to the vacuum pressure and to restore the pressure to the atmospheric pressure. Or repeatedly.

  Then, the unit controller acquires operation data when each processing unit performs such a diagnosis operation. For example, the spin controller acquires the rotation speed and torque of the spin motor, the discharge flow rate of the coating liquid, the pulse of the coating liquid pump, and the like as operation data. In addition, the bake controller obtains the time until the plate temperature and its temperature control are stabilized, the pressure value, the time until the pressure is reached, and the like as operation data. Based on the operation data acquired in this manner, the main controller MC determines whether or not there is an abnormality in the operation mechanism of each processing unit, as described above. The determination method at this time is also the same as described above, and it is determined whether or not the worst value of each operation data is within a predetermined range, and if the worst value is within the predetermined range, it is determined to be normal, If it is outside the predetermined range, it is determined as abnormal.

  Of course, the diagnostic mode as described above may be executed for the entire substrate processing apparatus. The processing contents at that time are also the same as described above. That is, when the start of the diagnostic mode is input from the main panel MP or the like, an instruction to execute the diagnostic mode is transmitted from the main controller MC to the cell controller CC of each cell, and each cell controller CC receives the transport robot controller TC of the corresponding cell. Also give diagnostic mode instructions to each unit controller. Then, the operation for diagnosis of the operation mechanism of the transfer robot and the processing unit provided in each cell is performed, and the abnormality of the operation mechanism is determined based on the operation data acquired at that time.

  Summarizing the above contents, the substrate processing apparatus of this embodiment is provided with a diagnostic mode for detecting the presence or absence of abnormality of the operation mechanism of the apparatus, separately from the normal processing mode for performing normal substrate processing. When the start of the diagnostic mode is input from the main panel MP or the like, the transfer robot controller TC and each unit controller control the operation mechanism of the transfer robot and each processing unit to cause the operation mechanism to perform a diagnosis operation. . The operation data when the operation mechanism performs the diagnosis operation is acquired by the transport robot controller TC and each unit controller, and the main controller MC determines whether the operation mechanism is abnormal based on the operation data.

  The diagnostic operation in the diagnostic mode is a severe load with a considerable load for each operation mechanism, and is not performed in the normal processing mode. That is, in the diagnosis mode, an operation in the vicinity of the movable limit point of the operation mechanism is executed as a diagnostic operation. Usually, such a diagnostic operation in the vicinity of the movable limit point is performed when the substrate W is processed according to a predetermined processing procedure. This is an operation in a range different from the steady operation of the operation mechanism in the normal processing mode. By performing such a severe diagnosis operation, it is possible to reliably detect an abnormality in the operation mechanism that cannot be found in the normal processing mode.

  In addition, since the severe diagnostic operation cannot be executed in the normal processing mode when the substrate W is processed according to a predetermined processing procedure, the operation data as described above cannot be acquired. Therefore, the substrate processing apparatus of the present embodiment is provided with a special diagnostic mode different from the normal processing mode, and by moving to the diagnostic mode, the operation mechanism performs a severe diagnostic operation to acquire operation data, The abnormality of the operation mechanism is surely detected.

  It is effective for various operation mechanisms provided in the substrate processing apparatus to determine the presence / absence of an abnormality of the operation mechanism by a severe diagnosis operation in such a diagnosis mode. This is effective for diagnosing the motor of a transfer robot that performs circulating transfer.

  While the embodiments of the present invention have been described above, the present invention is not limited to the above examples. For example, in the above-described embodiment, the main controller MC determines whether or not there is an abnormality in the operation mechanism based on the acquired operation data. However, each unit controller or cell controller CC determines whether the operation mechanism is in accordance with the operation data. You may make it determine the presence or absence of abnormality. Further, the substrate processing apparatus may be connected to a server dedicated to data collection, and the data collection dedicated server may determine whether the operation mechanism is abnormal based on operation data transmitted from the substrate processing apparatus.

  Further, the operation mechanism is not limited to the above-described example, and includes all mechanisms that perform some operation in the substrate processing apparatus. The content of the operation data acquired according to the type of the operation mechanism can be arbitrary.

  The configuration of the substrate processing apparatus according to the present invention is not limited to the configuration shown in FIGS. 1 to 4, and the substrate W is circulated and transferred to a plurality of processing units by a transfer robot. Various modifications are possible as long as predetermined processing is performed on the substrate W.

It is a top view of the substrate processing apparatus of this embodiment. It is a front view of the liquid processing part of the substrate processing apparatus of FIG. It is a front view of the heat processing part of the substrate processing apparatus of FIG. It is a figure which shows the periphery structure of the substrate mounting part of the substrate processing apparatus of FIG. It is a figure for demonstrating the conveyance robot of the substrate processing apparatus of FIG. It is a block diagram which shows the outline of the control mechanism of the substrate processing apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indexer block 2 Bark block 3 Resist application block 4 Development processing block 5 Interface block 12 Substrate transfer mechanism 21, 31, 41, 42 Heat treatment tower 55 Transfer mechanism AHL1-AHL3 Adhesion reinforcement processing part BRC1-BRC3, SC1-SC3 Application processing Unit C Carrier CC Cell controller CP1 to CP13 Cool plate HP1 to HP11 Hot plate MC Main controller MP Main panel PASS1 to PASS10 Substrate placement part PHP1 to PHP12 Heating part SD1 to SD5 Development processing unit TC Transport robot controller TR1 to TR4 Transport robot W substrate

Claims (4)

A substrate processing apparatus for circulating and transporting a substrate between a plurality of processing units and performing a predetermined process on the substrate,
Accepting means for accepting the start of a diagnostic mode for detecting an abnormality in an operation mechanism of the substrate processing apparatus;
Control means for controlling the operation mechanism so as to perform a diagnosis operation when a diagnosis mode start is input from the reception means;
Acquisition means for acquiring operation data when the operation mechanism performs the operation for diagnosis;
Determination means for determining presence or absence of abnormality of the operation mechanism based on the operation data acquired by the acquisition means;
A substrate processing apparatus comprising: The substrate processing apparatus according to claim 1,
The substrate processing apparatus, wherein the diagnosis operation is an operation in the vicinity of a movable limit point of the operation mechanism. The substrate processing apparatus according to claim 1,
The substrate processing apparatus, wherein the diagnostic operation is an operation in a range different from a steady operation of the operation mechanism when the predetermined processing is performed on the substrate. In the substrate processing apparatus in any one of Claims 1-3,
The substrate processing apparatus, wherein the operation mechanism is a motor of a transfer robot that circulates and transfers a substrate.

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