WO2019208338A1 - 基板処理システム、および基板処理方法 - Google Patents
基板処理システム、および基板処理方法 Download PDFInfo
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- WO2019208338A1 WO2019208338A1 PCT/JP2019/016370 JP2019016370W WO2019208338A1 WO 2019208338 A1 WO2019208338 A1 WO 2019208338A1 JP 2019016370 W JP2019016370 W JP 2019016370W WO 2019208338 A1 WO2019208338 A1 WO 2019208338A1
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- substrate
- processed
- laser processing
- alignment
- transfer
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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- B23K26/03—Observing, e.g. monitoring, the workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K26/36—Removing material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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- B23K26/60—Preliminary treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/56—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26 semiconducting
Definitions
- the present disclosure relates to a substrate processing system and a substrate processing method.
- the cutting apparatus of Patent Document 1 includes a cassette mounting mechanism for mounting a cassette containing a semiconductor wafer, an alignment mechanism for aligning the center position and crystal orientation of the semiconductor wafer unloaded from the cassette, and an alignment mechanism. And a cutting mechanism for cutting the unloaded semiconductor wafer.
- One embodiment of the present disclosure provides a technique that can reduce an installation area of a substrate processing system for laser processing a substrate.
- a substrate processing apparatus includes: A pre-alignment apparatus having a pre-alignment stage for holding a substrate to be processed, and a detector for detecting a center position and a crystal orientation of the substrate to be processed held by the pre-alignment stage; A laser processing apparatus comprising: a laser processing stage for holding the substrate to be processed; and a laser processing head for condensing and irradiating the laser beam for processing the substrate to be processed to the substrate to be processed held on the laser processing stage; With The pre-alignment apparatus is disposed on the laser processing apparatus.
- an installation area of a substrate processing system for laser processing a substrate can be reduced.
- FIG. 1 is a plan view showing a substrate processing system according to an embodiment.
- FIG. 2 is a diagram showing a substrate processing system according to an embodiment, and is a cross-sectional view taken along the line II-II in FIG.
- FIG. 3 is a perspective view showing a substrate to be processed according to an embodiment.
- FIG. 4 is a diagram illustrating a coating apparatus according to an embodiment.
- Drawing 5 is a figure showing the state before and behind supplying compressed air to the inside of the pressure vessel of the joining device concerning one embodiment.
- FIG. 6 is a diagram illustrating an example of a state where the sealed space of the bonding apparatus indicated by the solid line in FIG. 5 is decompressed.
- FIG. 7 is a diagram illustrating a laser processing apparatus according to an embodiment.
- FIG. 1 is a plan view showing a substrate processing system according to an embodiment.
- FIG. 2 is a diagram showing a substrate processing system according to an embodiment, and is a cross-sectional view taken along the line II-II in
- FIG. 8 is a diagram illustrating a thinning device according to an embodiment.
- FIG. 9 is a flowchart illustrating a substrate processing method according to an embodiment.
- FIG. 10 is a flowchart illustrating an example of a process performed after the process S109 of FIG. 9 when the process target substrate is thinned after the laser processing of the process target substrate.
- FIG. 11 is a flowchart illustrating an example of a process performed subsequent to step S109 in FIG. 9 when laser processing of the target substrate is performed after the target substrate is thinned.
- FIG. 1 is a plan view showing a substrate processing system according to an embodiment.
- FIG. 2 is a diagram showing a substrate processing system according to an embodiment, and is a cross-sectional view taken along the line II-II in FIG. 1 and 2, the X axis direction, the Y axis direction, and the Z axis direction are directions perpendicular to each other, the X axis direction and the Y axis direction are horizontal directions, and the Z axis direction is a vertical direction.
- the rotation direction with the vertical axis as the center of rotation is also called the ⁇ direction.
- “lower” means vertically downward
- “upper” means vertically upward.
- the substrate processing system 1 performs laser processing of the substrate 10 to be processed. In addition, the substrate processing system 1 thins the substrate 10 to be processed. Either laser processing of the substrate to be processed 10 or thinning of the substrate to be processed 10 may be performed first. Regardless of which is performed first, the substrate processing system 1 is configured to be able to cope. The substrate processing system 1 may perform only the laser processing of the substrate 10 to be processed among the laser processing of the substrate 10 to be processed and the thinning of the substrate 10 to be processed.
- the substrate processing system 1 joins the substrate to be processed 10 and the support substrate 20 to reinforce the substrate to be processed 10 before laser processing of the substrate 10 to be processed and thinning the substrate 10 to be processed. 30 (see FIG. 6) is prepared.
- a bonding surface bonded to the support substrate 20 of the substrate to be processed 10 is the first main surface 11. Therefore, the protective tape is not bonded to the first main surface 11.
- the to-be-processed substrate 10 does not need to be joined to the support substrate 20, and in that case, a protective tape is bonded to the first main surface 11 of the to-be-processed substrate 10.
- the substrate processing system 1 has a loading / unloading station 100 in which a cassette 101 that accommodates a substrate to be processed 10 is loaded / unloaded.
- the cassette 102 that accommodates the support substrate 20 and the cassettes 103 and 104 that accommodate the superposed substrate 30 are carried in and out of the carry-in / out station 100.
- the loading / unloading station 100 includes a cassette table 110 on which a cassette 101 that accommodates the substrate to be processed 10 is placed.
- the cassette stand 110 includes a plurality of (for example, four) placement plates 112.
- the plurality of placement plates 112 are arranged at intervals in the Y-axis direction.
- a plurality of cassettes 101, 102, 103, 104 are placed on the plurality of placement plates 112.
- the superposed substrate 30 is identified as a non-defective product and a defective product, and is accommodated in a cassette 103 for good products and a cassette 104 for defective products.
- FIG. 3 is a perspective view showing a substrate to be processed according to one embodiment.
- the substrate to be processed 10 is a semiconductor substrate such as a silicon wafer.
- the substrate 10 has a first main surface 11 and a second main surface 12 that face each other.
- the first main surface 11 of the substrate to be processed 10 is partitioned by a plurality of streets formed in a lattice shape. Devices such as elements, circuits, and terminals are formed in advance in each partitioned area.
- a planned dividing line 13 is set for each of the plurality of streets.
- the substrate 10 to be processed is divided by the division line 13 to obtain a plurality of chips 19 (see FIG. 8).
- the substrate 10 to be processed is accommodated in the cassette 101 with the first main surface 11 on which the device is formed facing upward. Further, the substrate 10 to be processed is taken out from the cassette 101, turned upside down, and delivered to the processing station 200.
- the loading / unloading station 100 (see FIGS. 1 and 2) has a transfer area 120 to which the substrate 10 to be processed is transferred.
- the conveyance area 120 is disposed on the X axis direction positive side of the cassette table 110.
- a guide rail 121 extending in the Y-axis direction is installed in the transport region 120, and the transport device 122 moves along the guide rail 121.
- the transfer device 122 includes a first holder 123 as a holding unit that holds the substrate 10 to be processed.
- the transfer device 122 since the substrate to be processed 10 is bonded to the support substrate 20, the transfer device 122 has a circular suction surface having a diameter larger than the diameter of the substrate to be processed 10, and the substrate to be processed 10 is placed on the suction surface. There is no second holder to adsorb.
- the to-be-processed substrate 10 does not need to be joined to the support substrate 20, and in that case, the transfer device 122 may have a second holder.
- the first holder 123 can be moved not only in the Y axis direction but also in the X axis direction, the Z axis direction, and the ⁇ direction.
- the first holder 123 takes out the substrate 10 to be processed from the cassette 101 placed on the cassette table 110.
- the first holder 123 takes out the support substrate 20 from the cassette 102 placed on the cassette table 110. Further, the first holder 123 accommodates the superposed substrate 30 in the non-defective cassette 103 or the defective cassette 104 placed on the cassette base 110.
- the first holder 123 is formed in a fork shape divided into two forks so that it can be easily inserted into each of the plurality of cassettes 101, 102, 103, 104.
- the first holder 123 can be turned upside down to turn the substrate 10 to be turned upside down.
- the substrate processing system 1 includes a processing station 200 that processes the target substrate 10 taken out from the cassette 101.
- the processing station 200 joins the support substrate 20 and the substrate to be processed 10 via the adhesive 22 and the coating apparatus 210 that applies the adhesive 22 to the bonding surface 21 to be bonded to the substrate 10 to be processed. And a joining device 220.
- the coating apparatus 210 and the bonding apparatus 220 are arbitrary apparatuses, and the processing station 200 may not include the coating apparatus 210 and the bonding apparatus 220.
- FIG. 4 is a view showing a coating apparatus according to an embodiment.
- the coating apparatus 210 includes, for example, an adhesive on the spin chuck 211 that holds the support substrate 20 horizontally with the joint surface 21 of the support substrate 20 facing upward, and the joint surface 21 of the support substrate 20 that is held by the spin chuck 211. And a coating nozzle 212 for coating 22.
- the coating device 210 spreads the adhesive 22 on the bonding surface 21 of the support substrate 20 by rotating the spin chuck 211. Thereafter, the coating device 210 dries the adhesive 22.
- a glass substrate is used.
- a semiconductor substrate may be used instead of the glass substrate.
- the adhesive 22 for example, a thermoplastic resin is used.
- FIG. 5 is a diagram illustrating a state before and after supplying compressed air to the inside of the pressure vessel of the joining device according to the embodiment.
- a two-dot chain line shows a state before the compressed air is supplied to the inside of the pressure vessel 224
- a solid line shows a state after the compressed air is supplied to the inside of the pressure vessel 224.
- FIG. 6 is a diagram illustrating an example of a state where the sealed space of the bonding apparatus indicated by the solid line in FIG. 5 is decompressed.
- the bonding apparatus 220 includes, for example, an upper chuck 221 that holds the substrate 10 to be processed horizontally and a lower chuck 222 that holds the support substrate 20 horizontally.
- the lower chuck 222 includes a heater 223 that heats the adhesive 22 by heating the support substrate 20.
- the bonding apparatus 220 includes a pressure vessel 224 into which compressed air that deforms the suction surface of the upper chuck 221 that sucks the substrate 10 to be processed into a convex shape downward is supplied.
- the pressure vessel 224 can be expanded and contracted in the vertical direction, and is made of, for example, a metal bellows.
- the bonding apparatus 220 lowers the upper chuck 221, brings the upper chuck 221 into contact with the lower chuck 222, and forms a sealed space 225 between the upper chuck 221 and the lower chuck 222. . Subsequently, the bonding apparatus 220 causes the suction surface of the upper chuck 221 that sucks the substrate 10 to be processed to be convexly deformed by supplying compressed air into the pressure vessel 224. Thereby, the center part of the to-be-processed substrate 10 and the center part of the support substrate 20 are joined via the adhesive agent 22.
- the joining device 220 depressurizes the sealed space 225 in order to prevent air from being caught. Since the differential pressure between the sealed space 225 and the suction hole of the upper chuck 221 is reduced, the upper chuck 221 cannot vacuum-suck the substrate 10 to be processed, and the substrate 10 to be processed is projected downward from the solid line in FIG. It returns to the flat state shown in FIG. At this time, the substrate to be processed 10 and the support substrate 20 are gradually joined from the center of the substrate to be processed 10 toward the outer periphery.
- the coating apparatus 210 may apply the adhesive 22 to the bonding surface to be bonded to the support substrate 20 of the substrate 10 to be processed.
- the bonding surface bonded to the support substrate 20 of the substrate to be processed 10 is the first main surface 11 on which a device has been formed in advance.
- the processing station 200 includes a laser processing device 230 that performs laser processing of the substrate 10 to be processed.
- FIG. 7 is a diagram illustrating a main part of the laser processing apparatus according to the embodiment.
- the laser processing device 230 performs, for example, laser processing (so-called laser dicing) for dividing the substrate 10 to be processed into a plurality of chips 19 (see FIG. 8).
- the laser processing apparatus 230 condenses and irradiates a laser processing stage 231 that holds the substrate 10 to be processed and a laser beam LB that processes the substrate 10 to be processed to the substrate 10 that is held by the laser processing stage 231.
- a head 232 condenses and irradiates a laser processing stage 231 that holds the substrate 10 to be processed and a laser beam LB that processes the substrate 10 to be processed to the substrate 10 that is held by the laser processing stage 231.
- the laser processing stage 231 holds the target substrate 10 from below with the second main surface 12 of the target substrate 10 facing upward.
- the laser processing stage 231 has a circular suction surface having a diameter larger than the diameter of the substrate 10 to be processed, and sucks the substrate 10 to be processed on the suction surface.
- the laser processing stage 231 is a vacuum chuck that vacuum-sucks the substrate 10 to be processed, but may be an electrostatic chuck that electrostatically chucks the substrate 10 to be processed.
- the laser processing stage 231 holds the substrate 10 to be processed that is bonded to the support substrate 20 in advance, that is, the superposed substrate 30.
- the laser processing head 232 has a condenser lens 233 disposed vertically above the laser processing stage 231.
- the condensing lens 233 condenses the laser beam LB inside the substrate 10 to be processed, and forms the modified layer 15 serving as a starting point of the division inside the substrate 10 to be processed.
- a laser beam having transparency to the substrate 10 to be processed is used.
- the modified layer 15 is formed, for example, by locally melting and solidifying the inside of the substrate 10 to be processed.
- the laser beam LB forms the modified layer 15 serving as a starting point of fracture inside the substrate 10 to be processed, but a laser processing groove may be formed on the upper surface of the substrate 10 to be processed.
- the laser processing groove may or may not penetrate the substrate 10 to be processed in the thickness direction.
- the laser processing apparatus 230 has a moving mechanism 234 (see FIGS. 1 and 2) that moves the laser processing stage 231 to move the position of the irradiation point of the laser beam LB on the upper surface of the substrate 10 to be processed.
- the moving mechanism 234 moves the laser processing stage 231 in the X axis direction, the Y axis direction, and the ⁇ direction.
- the moving mechanism 234 is composed of, for example, an XY ⁇ stage, and includes a Y-axis guide 235, a Y-axis slider that moves along the Y-axis guide 235, an X-axis guide 236, and an X-axis slider that moves along the X-axis guide.
- the Y-axis guide 235 is fixed to the base frame 237, for example.
- An X-axis guide 236 is fixed to the Y-axis slider that moves along the Y-axis guide.
- a rotary disk is rotatably attached to the X-axis slider that moves along the X-axis guide 236.
- a laser processing stage 231 is fixed to the rotating disk.
- the moving mechanism 234 is configured with an XY ⁇ stage in the present embodiment, but may be configured with an XYZ ⁇ stage. That is, the laser processing stage 231 may be movable in the Z-axis direction.
- the laser processing apparatus 230 includes a base frame 237, a plurality of support columns 238 erected on the base frame 237, and a ceiling frame 239 supported by the plurality of support columns 238.
- a movement mechanism 234 is installed on the base frame 237, and a laser processing head 232 is attached to the ceiling frame 239.
- the processing station 200 has a pre-alignment device 240.
- the pre-alignment apparatus 240 includes a pre-alignment stage 241 that holds the target substrate 10 and a detector 242 that detects the center position and crystal orientation of the target substrate 10 held on the pre-alignment stage 241.
- the detector 242 detects the crystal orientation of the substrate to be processed 10 by detecting the position of the notch 14 (see FIG. 3) that represents the crystal orientation of the substrate 10 to be processed.
- the detector 242 may detect the position of the orientation flat instead of detecting the position of the notch 14.
- the pre-alignment stage 241 holds the substrate to be processed 10 from below with the second main surface 12 of the substrate to be processed 10 facing upward.
- the pre-alignment stage 241 has a circular suction surface having a diameter larger than the diameter of the substrate 10 to be processed, and sucks the substrate 10 to be processed on the suction surface.
- the pre-alignment stage 241 is a vacuum chuck that vacuum-sucks the substrate 10 to be processed, but may be an electrostatic chuck that electrostatically chucks the substrate 10 to be processed.
- the pre-alignment stage 241 holds the substrate 10 to be processed that is bonded to the support substrate 20 in advance, that is, the superposed substrate 30.
- the detector 242 includes an image sensor, for example, and images the outer periphery of the substrate 10 to be processed held by the pre-alignment stage 241. In order to image a plurality of points on the outer periphery of the substrate 10 to be processed, the pre-alignment stage 241 rotates around the vertical axis. The detector 242 transmits a captured image signal to the control device 400. The control device 400 obtains the center position and crystal orientation of the substrate to be processed 10 in the coordinate system fixed to the pre-alignment stage 241 by performing image processing on the image captured by the detector 242.
- the pre-alignment device 240 has an attachment base 243 that is fixed to the ceiling frame 239 of the laser processing device 230.
- a pre-alignment stage 241 is rotatably attached to the attachment base 243.
- a support column that supports the detector 242 is fixed to the mounting base 243.
- the pre-alignment device 240 is arranged on the upper part of the laser processing device 230. Since the pre-alignment apparatus 240 and the laser processing apparatus 230 are stacked in the vertical direction, the substrate processing system 1 can be compared with the case where the pre-alignment apparatus 240 and the laser processing apparatus 230 are aligned in the horizontal direction. The installation area can be reduced.
- the pre-alignment device 240 is disposed inside the outer peripheral edge of the base frame 237 so as not to protrude from the base frame 237 of the laser processing device 230 when viewed in the vertical direction.
- the processing station 200 includes a transfer arm 260 that receives the target substrate 10 from the pre-alignment apparatus 240 and transfers the received target substrate 10 to the laser processing apparatus 230.
- the transfer arm 260 can be moved in the X-axis direction along the X-axis guide 261, and can be moved in the Z-axis direction along the Z-axis guide 262.
- the transport arm 260 is not movable in the Y-axis direction, but may be movable in the Y-axis direction.
- the transfer arm 260 holds the target substrate 10 from above with the first main surface 11 of the target substrate 10 facing downward.
- the transfer arm 260 has a circular suction surface having a diameter larger than the diameter of the substrate 10 to be processed, and sucks the substrate 10 to be processed on the suction surface.
- the transfer arm 260 is a vacuum chuck that vacuum-sucks the substrate 10 to be processed, but may be an electrostatic chuck that electrostatically chucks the substrate 10 to be processed.
- the transfer arm 260 holds the substrate 10 to be processed, which is bonded to the support substrate 20 in advance, that is, the superposed substrate 30.
- the transfer arm 260 transfers the substrate 10 to be processed from the pre-alignment apparatus 240 to the laser processing apparatus 230.
- the transfer arm 260 is used when the processing target substrate 10 is thinned after laser processing of the processing target substrate 10 (see FIG. 10).
- the transfer device 280 of the processing station 200 loads the superposed substrate 30 into the pre-alignment device 240, and then the transfer arm 260 unloads the superposed substrate 30 from the pre-alignment device 240.
- the transfer device 280 of the processing station 200 may be used for carrying out the superposed substrate 30 from the pre-alignment device 240
- the transfer arm 260 is used in this embodiment. According to this embodiment, since the route through which the superposed substrate 30 is carried into the pre-alignment apparatus 240 is different from the route through which the superposed substrate 30 is carried out from the pre-alignment device 240, the flow of the superposed substrate 30 is congested. Can be suppressed.
- the transfer device 122 of the loading / unloading station 100 loads the substrate 10 to be processed into the pre-alignment device 240, and then the transfer arm 260 unloads the substrate 10 to be processed from the pre-alignment device 240. Therefore, since the path through which the substrate to be processed 10 is carried into the pre-alignment apparatus 240 is different from the path through which the substrate to be processed 10 is carried out from the pre-alignment apparatus 240, it is possible to suppress the congestion of the flow of the substrate to be processed 10. .
- the transfer arm 260 may be used when the substrate to be processed 10 is returned to the loading / unloading station 100 without being thinned after the laser processing of the substrate 10 to be processed. In this case as well, it is possible to suppress the flow of the substrate 10 to be jammed. This is because the transfer device 122 of the loading / unloading station 100 loads the substrate 10 to be processed into the pre-alignment device 240, and then the transfer arm 260 unloads the substrate 10 to be processed from the pre-alignment device 240.
- the transfer arm 260 is movable vertically above the moving mechanism 234 that moves the laser processing stage 231. Since the transfer arm 260 and the moving mechanism 234 of the laser processing stage 231 are stacked in the vertical direction, the transfer arm 260 and the moving mechanism 234 of the laser processing stage 231 are arranged side by side in the horizontal direction. The installation area of the substrate processing system 1 can be reduced.
- the transfer arm 260 moves inside the outer peripheral edge of the base frame 237 so as not to protrude from the base frame 237 of the laser processing device 230 when viewed in the vertical direction.
- the processing station 200 includes a thinning device 270 that thins the substrate 10 to be processed.
- FIG. 8 is a diagram illustrating a thinning device according to an embodiment.
- the thinning device 270 thins the substrate to be processed 10 by grinding the second main surface 12 of the substrate 10 to be processed.
- the thinning device 270 has a rotating chuck 272 that holds the substrate 10 to be processed from below with the second main surface 12 of the substrate 10 to be processed facing upward.
- the rotary chuck 272 has a circular suction surface having a diameter larger than the diameter of the substrate 10 to be processed, and sucks the substrate 10 to be processed on the suction surface.
- the rotary chuck 272 is, for example, a vacuum chuck that vacuum-sucks the substrate 10 to be processed, but may be an electrostatic chuck that electrostatically chucks the substrate 10 to be processed.
- the thinning device 270 has a rotating grindstone 274 disposed vertically above the rotating chuck 272.
- the rotating grindstone 274 descends while rotating and grinds the upper surface (second main surface 12) of the substrate to be processed 10 that rotates together with the rotating chuck 272.
- the processed substrate 10 is thinned after laser processing of the processed substrate 10, cracks extend in the thickness direction starting from the modified layer 15 shown in FIG. 7, and the processed substrate 10 has a plurality of chips. 19 (see FIG. 8). Further, the modified layer 15 shown in FIG. 7 is removed by grinding.
- the thinning device 270 and the carry-in / out station 100 are arranged on the opposite side with the laser processing device 230 sandwiched in the horizontal direction (see FIGS. 1 and 2).
- the thinning device 270 is disposed on the X axis direction positive side of the laser processing apparatus 230, and the loading / unloading station 100 is disposed on the X axis direction negative side of the laser processing apparatus 230.
- a laser processing device 230 in which no grinding waste is generated is disposed. Therefore, the loading / unloading station 100 can be kept clean, and the processed substrate 10 after processing can be kept clean.
- the processing station 200 moves while holding the substrate to be processed 10 between the loading / unloading station 100 and the thinning device 270, and transfers the processing substrate 10 to the loading / unloading station 100 and the thinning device 270.
- the substrate 10 to be processed may be delivered from the loading / unloading station 100 to the transfer device 280, or the substrate to be processed 10 may be transferred from the transfer device 280 to the loading / unloading station 100.
- the substrate 10 to be processed may be transferred from the thin plate apparatus 270 to the transfer apparatus 280, or the substrate 10 to be processed may be transferred from the transfer apparatus 280 to the thin plate apparatus 270.
- the transfer device 280 may transfer the substrate 10 to be processed after the laser processing is performed, or may transfer the substrate 10 to be processed before the laser processing is performed. While the transfer device 280 transfers the substrate 10 to be processed outside the laser processing device 230, the laser processing device 230 can perform laser processing of another substrate 10 to be processed, and throughput can be improved. The transfer device 280 can also transfer the support substrate 20. Further, the transport device 280 can transport the superposed substrate 30.
- the transfer device 280 includes a transfer arm 283 that moves along a guide rail 282 installed in a transfer region 281 that is adjacent to the laser processing device 230 in the horizontal direction.
- the transfer region 281 is adjacent to the laser processing device 230, the thinning device 270, and the transfer region 120 of the loading / unloading station 100.
- the laser processing device 230 is disposed on the Y axis direction positive side of the transport region 281.
- the thinning device 270 is disposed on the X axis direction positive side of the transport region 281.
- the transfer area 120 of the carry-in / out station 100 is arranged on the X axis direction negative side of the transfer area 281.
- the guide rail 282 extends in the X-axis direction.
- the transfer arm 283 can be moved not only in the X axis direction but also in the Y axis direction, the Z axis direction, and the ⁇ direction.
- the transfer arm 283 is formed, for example, in a fork shape that is divided into two forks, similar to the first holder 123.
- the transfer arm 283 can deliver the substrate to be processed 10 to the laser processing apparatus 230 as well as the carry-in / out station 100 and the thinning apparatus 270.
- the transfer arm 283 can also deliver the support substrate 20 to the laser processing apparatus 230. Further, the transfer arm 283 can also deliver the superposed substrate 30 to the laser processing apparatus 230.
- the coating apparatus 210 and the joining apparatus 220 are adjacent to the conveyance area
- the coating device 210 and the joining device 220 are disposed, for example, on the Y axis direction negative side of the transport region 281.
- the transfer device 280 delivers the support substrate 20 (or the substrate to be processed 10) to the coating device 210. Further, the transfer device 280 delivers the substrate 10 to be processed and the support substrate 20 to the bonding device 220.
- the work amount of the transfer device 280 can be increased, and the operating rate of the transfer device 280 can be improved.
- the substrate processing system 1 includes a control device 400 that controls the operation of the loading / unloading station 100 and the operation of the processing station 200.
- the control device 400 is configured by a computer, for example, and includes a CPU (Central Processing Unit) 401, a storage medium 402 such as a memory, an input interface 403, and an output interface 404.
- the control device 400 performs various controls by causing the CPU 401 to execute a program stored in the storage medium 402.
- the control device 400 receives a signal from the outside through the input interface 403 and transmits a signal to the outside through the output interface 404.
- the program of the control device 400 is stored in the information storage medium and installed from the information storage medium.
- Examples of the information storage medium include a hard disk (HD), a flexible disk (FD), a compact disk (CD), a magnetic optical desk (MO), and a memory card.
- the program may be downloaded from a server via the Internet and installed.
- FIG. 9 is a flowchart showing a substrate processing method according to an embodiment.
- FIG. 10 is a flowchart illustrating an example of a process performed after the process S109 of FIG. 9 when the process target substrate is thinned after the laser processing of the process target substrate. 9 and 10 are performed under the control of the control device 400.
- the order of the plurality of steps shown in FIGS. 9 and 10 is not particularly limited. Moreover, some processes shown in FIGS. 9 and 10 may not be performed.
- the substrate processing method includes a step S 101 in which the first holder 123 takes out the substrate 10 to be processed from the cassette 101 placed on the cassette stand 110 and conveys the extracted substrate 10 to the processing station 200.
- the substrate processing method includes step S ⁇ b> 102 in which the transfer arm 283 receives the target substrate 10 from the first holder 123 and transfers the received target substrate 10 to the bonding apparatus 220.
- the following steps S103 to S106 are performed.
- the following steps S103 to S106 may be performed before the start of the following step S107, and may not be performed in parallel with the above steps S101 and S102.
- the substrate processing method includes a step S103 in which the first holder 123 takes out the support substrate 20 from the cassette 102 placed on the cassette stand 110 and transports the taken out support substrate 20 to the processing station 200.
- the substrate processing method includes step S ⁇ b> 104 in which the transport arm 283 receives the support substrate 20 from the first holder 123 and transports the received support substrate 20 to the coating apparatus 210.
- the substrate processing method includes a step S105 in which the coating apparatus 210 applies the adhesive 22 to the bonding surface 21 to be bonded to the target substrate 10 of the support substrate 20.
- the substrate processing method includes step S ⁇ b> 106 in which the transfer arm 283 receives the support substrate 20 from the coating apparatus 210 and transfers the received support substrate 20 to the bonding apparatus 220.
- the transfer arm 283 may transfer the substrate to be processed 10 to the coating apparatus 210.
- the transfer arm 283 transfers the support substrate 20 to the bonding apparatus 220 in step S104.
- the substrate processing method includes a step in which the coating apparatus 210 applies the adhesive 22 to the bonding surface to be bonded to the support substrate 20 of the substrate to be processed 10 instead of the step S105.
- the substrate processing method includes a step in which the transfer arm 283 receives the substrate to be processed 10 from the coating apparatus 210 and transfers the received substrate to be processed 10 to the bonding apparatus 220 instead of the step S106.
- the substrate processing method includes a step S107 in which the bonding apparatus 220 forms the superposed substrate 30 by bonding the support substrate 20 and the substrate to be processed 10 via the adhesive 22.
- the substrate to be processed 10 is bonded to the support substrate 20 and is reinforced by the support substrate 20. Therefore, damage to the substrate 10 to be processed can be prevented.
- the substrate processing method includes step S108 in which the transport arm 283 receives the superposed substrate 30 from the bonding apparatus 220 and transports the received superposed substrate 30 to the pre-alignment apparatus 240.
- the pre-alignment apparatus 240 receives the superposed substrate 30 from the transfer arm 283 and holds the received superposed substrate 30 on the pre-alignment stage 241.
- the substrate processing method includes step S109 in which the pre-alignment stage 241 holds the superposed substrate 30 and the detector 242 detects the center position and crystal orientation of the substrate 10 to be processed held by the pre-alignment stage 241.
- the substrate processing method includes a step S110 in which the transfer arm 260 receives the superposed substrate 30 from the pre-alignment apparatus 240 and transports the received superposed substrate 30 to the laser processing apparatus 230.
- the substrate processing method includes step S111 in which the laser processing apparatus 230 receives the superposed substrate 30 from the transfer arm 260 and holds the received superposed substrate 30 on the laser processing stage 231.
- the pre-alignment apparatus 240 allows the superposed substrate 30 so that the crystal orientation of the substrate 10 to be processed with respect to the laser processing stage 231 in the step S111 is a preset orientation. Rotate.
- the transfer arm 260 receives the superposed substrate 30 from the pre-alignment stage 241 so that the center position of the laser processing stage 231 and the center position of the substrate to be processed 10 coincide with each other in step S ⁇ b> 111.
- the substrate processing method includes a step S112 in which the laser processing apparatus 230 performs laser processing on the substrate 10 to be processed.
- the laser processing stage 231 holds the superposed substrate 30, and the laser processing head 232 collects the laser beam LB for processing the target substrate 10 on the target substrate 10 held by the laser processing stage 231. Irradiate with light.
- the substrate processing method includes a step S113 in which the transfer arm 283 receives the superposed substrate 30 from the laser processing device 230 and transports the received superposed substrate 30 to the thinning device 270.
- the substrate processing method includes step S114 in which the thinning device 270 receives the superposed substrate 30 and holds the superposed substrate 30 on the rotary chuck 272.
- the substrate processing method includes a step S115 in which the thin plate apparatus 270 thins the substrate 10 to be processed.
- the rotating chuck 272 holds the superposed substrate 30, and the rotating grindstone 274 descends while rotating to contact the substrate 10 to be processed, and the substrate 10 that rotates together with the rotating chuck 272 is ground.
- the substrate processing method includes a step S116 in which the transport arm 283 receives the superposed substrate 30 from the thinning device 270 and transports the superposed substrate 30 to the carry-in / out station 100.
- the substrate processing method includes a step S117 in which the first holder 123 receives the overlapped substrate 30 from the transfer arm 283 and stores the received overlapped substrate 30 in the cassette 103 or the cassette 104 placed on the cassette stand 110. After step S117, the current process ends.
- FIG. 11 is a flowchart showing an example of a process performed subsequent to step S109 in FIG. 9 when laser processing of the substrate to be processed is performed after thinning the substrate to be processed.
- a plurality of steps shown in FIG. 11 are performed under the control of the control device 400. Note that the order of the plurality of steps shown in FIG. 11 is not particularly limited. Moreover, some processes shown in FIG. 11 may not be performed.
- the substrate processing method includes a step S201 in which the transport arm 283 receives the superposed substrate 30 from the pre-alignment apparatus 240 and transports the superposed substrate 30 to the thinning device 270.
- the substrate processing method includes step S202 in which the thinning device 270 receives the superposed substrate 30 and holds the superposed substrate 30 on the rotary chuck 272.
- the pre-alignment apparatus 240 moves the superposed substrate 30 so that the crystal orientation of the substrate 10 to be processed with respect to the rotary chuck 272 in the step S202 becomes a preset orientation. Rotate.
- the transfer arm 283 receives the superposed substrate 30 from the pre-alignment stage 241 so that the center position of the rotary chuck 272 matches the center position of the substrate 10 to be processed in step S ⁇ b> 202.
- the substrate processing method includes a step S203 in which the thinning device 270 thins the substrate 10 to be processed.
- the rotating chuck 272 holds the superposed substrate 30, and the rotating grindstone 274 descends while rotating to contact the substrate 10 to be processed, and the substrate 10 that rotates together with the rotating chuck 272 is ground.
- the substrate processing method includes a step S204 in which the transfer arm 283 receives the overlapped substrate 30 from the thinning device 270 and transfers the received overlapped substrate 30 to the laser processing apparatus 230.
- the substrate processing method includes step S205 in which the laser processing apparatus 230 receives the superposed substrate 30 from the transfer arm 283 and holds the superposed substrate 30 on the laser processing stage 231.
- the substrate processing method includes step S206 in which the laser processing apparatus 230 performs laser processing on the substrate 10 to be processed.
- the laser processing stage 231 holds the superposed substrate 30, and the laser processing head 232 collects the laser beam LB for processing the target substrate 10 on the target substrate 10 held by the laser processing stage 231. Irradiate with light.
- the substrate processing method includes step S207 in which the transfer arm 283 receives the overlapped substrate 30 from the laser processing apparatus 230 and transfers the received overlapped substrate 30 to the carry-in / out station 100.
- the substrate processing method includes step S208 in which the first holder 123 receives the overlapped substrate 30 from the transfer arm 283 and stores the received overlapped substrate 30 in the cassette 103 or the cassette 104 placed on the cassette stand 110. After step S208, the current process ends.
- the transfer device 122 of the carry-in / out station 100 receives the superposed substrate 30 from the laser processing device 230, and the cassette 103 or 104 on which the superposed substrate 30 is placed on the cassette table 110.
- the process of storing in may be performed.
- the substrate processing system 1 of the above embodiment includes the coating apparatus 210 and the bonding apparatus 220, but may not include the coating apparatus 210 and the bonding apparatus 220.
- the superposed substrate 30 is read as the substrate 10 to be processed.
- the transfer device 122 of the loading / unloading station 100 takes out the substrate 10 to be processed from the cassette 101 placed on the cassette stand 110 and takes out the substrate to be processed.
- a step of transporting the substrate 10 to the pre-alignment apparatus 240 is performed.
- the substrate processing system 1 of the above embodiment is configured so as to be able to cope with either the laser processing of the substrate 10 to be processed or the thinning of the substrate 10 to be processed first. It may be configured to be able to cope only with the case where it is performed. For example, the substrate processing system 1 does not need to include the transfer arm 260 when it corresponds only to the case where the processing target substrate 10 is thinned first.
- the substrate processing system 1 of the above embodiment performs both laser processing of the substrate 10 to be processed and thinning of the substrate 10 to be processed. Of these, only laser processing of the substrate 10 to be processed may be performed. It is not necessary to have the conversion device 270. In this case, the substrate 10 to be processed passes through the transfer area 120 and is stored in the cassette placed on the cassette table 110 after step S112 in FIG. Thereafter, the current process ends.
- Substrate processing system 10 Substrate 20 Support substrate 30 Superposition substrate 100 Loading / unloading station 200 Processing station 210 Coating device 220 Joining device 230 Laser processing device 231 Laser processing stage 232 Laser processing head 240 Pre-alignment device 241 Pre-alignment stage 242 Detector 260 Transfer arm 270 Thinning device 280 Transfer device 281 Transfer area 282 Guide rail 283 Transfer arm
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Abstract
Description
被処理基板を保持するプリアライメントステージと、前記プリアライメントステージに保持されている前記被処理基板の中心位置および結晶方位を検出する検出器とを有するプリアライメント装置と、
前記被処理基板を保持するレーザー加工ステージと、前記被処理基板を加工するレーザー光線を、前記レーザー加工ステージに保持されている前記被処理基板に集光照射するレーザー加工ヘッドとを有するレーザー加工装置とを備え、
前記プリアライメント装置は、前記レーザー加工装置の上部に配置される。
10 被処理基板
20 支持基板
30 重合基板
100 搬入出ステーション
200 処理ステーション
210 塗布装置
220 接合装置
230 レーザー加工装置
231 レーザー加工ステージ
232 レーザー加工ヘッド
240 プリアライメント装置
241 プリアライメントステージ
242 検出器
260 搬送アーム
270 薄板化装置
280 搬送装置
281 搬送領域
282 ガイドレール
283 搬送アーム
Claims (14)
- 被処理基板を保持するプリアライメントステージと、前記プリアライメントステージに保持されている前記被処理基板の中心位置および結晶方位を検出する検出器とを有するプリアライメント装置と、
前記被処理基板を保持するレーザー加工ステージと、前記被処理基板を加工するレーザー光線を、前記レーザー加工ステージに保持されている前記被処理基板に集光照射するレーザー加工ヘッドとを有するレーザー加工装置とを備え、
前記プリアライメント装置は、前記レーザー加工装置の上部に配置される、基板処理システム。 - 前記被処理基板を収納するカセットが搬入出される搬入出ステーションと、
前記被処理基板を薄板化する薄板化装置とを備え、
前記薄板化装置と前記搬入出ステーションとは、前記レーザー加工装置を水平方向に挟み反対側に配置される、請求項1に記載の基板処理システム。 - 前記搬入出ステーションと前記薄板化装置との間で前記被処理基板を保持しながら移動し、前記搬入出ステーションおよび前記薄板化装置に対し前記被処理基板を受け渡す搬送装置を備える、請求項2に記載の基板処理システム。
- 前記搬送装置は、前記レーザー加工装置に水平方向に隣接する搬送領域に設置されるガイドレールに沿って移動する搬送アームを有する、請求項3に記載の基板処理システム。
- 支持基板の前記被処理基板と接合される接合面、または前記被処理基板の支持基板と接合される接合面に接着剤を塗布する塗布装置と、
前記接着剤を介して前記支持基板と前記被処理基板とを接合する接合装置とを備え、
前記塗布装置および前記接合装置は、それぞれ、前記搬送領域に隣接して配置される、請求項4に記載の基板処理システム。 - 前記搬送アームによる前記プリアライメント装置から前記薄板化装置への前記被処理基板の搬送を制御する制御装置を備える、請求項4または5に記載の基板処理システム。
- 鉛直方向視で前記レーザー加工装置の内側に配置され、前記プリアライメント装置から前記レーザー加工装置に前記被処理基板を搬送する搬送アームを有する、請求項1~6のいずれか1項に記載の基板処理システム。
- 請求項1に記載の基板処理システムを使用して前記被処理基板を処理する、基板処理方法であって、
前記プリアライメントステージが前記被処理基板を保持すると共に、前記検出器が前記プリアライメントステージに保持されている前記被処理基板の中心位置および結晶方位を検出する工程と、
前記レーザー加工ステージが前記被処理基板を保持すると共に、前記レーザー加工ヘッドが、前記被処理基板を加工するレーザー光線を、前記レーザー加工ステージに保持されている前記被処理基板に集光照射する工程とを有する、基板処理方法。 - 前記被処理基板を収納するカセットが搬入出される搬入出ステーションとは、前記レーザー加工装置を水平方向に挟んで反対側に配置される薄板化装置が、前記被処理基板の薄板化を行う工程を有する、請求項8に記載の基板処理方法。
- 前記搬入出ステーションと前記薄板化装置との間で前記被処理基板を保持しながら移動する搬送装置が、前記搬入出ステーションおよび前記薄板化装置に対し前記被処理基板を受け渡す工程を有する、請求項9に記載の基板処理方法。
- 前記搬送装置は、前記レーザー加工装置に水平方向に隣接する搬送領域に設置されるガイドレールに沿って移動する搬送アームを有し、
前記搬送アームが、前記搬入出ステーションおよび前記薄板化装置に対し前記被処理基板を受け渡す工程を有する、請求項10に記載の基板処理方法。 - 前記搬送領域に水平方向に隣接する塗布装置が、支持基板の前記被処理基板と接合される接合面、または前記被処理基板の支持基板と接合される接合面に接着剤を塗布する工程と、
前記搬送領域に水平方向に隣接する接合装置が、前記接着剤を介して前記支持基板と前記被処理基板とを接合する工程とを有する、請求項11に記載の基板処理方法。 - 前記搬送アームが、前記プリアライメント装置から前記薄板化装置に前記被処理基板を搬送する工程を有する、請求項11または12に記載の基板処理方法。
- 鉛直方向視で前記レーザー加工装置の内側に配置される搬送アームが、前記プリアライメント装置から前記レーザー加工装置に前記被処理基板を搬送する工程を有する、請求項8~12のいずれか1項に記載の基板処理方法。
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