WO2023074378A1 - 基板処理装置、及び基板処理方法 - Google Patents
基板処理装置、及び基板処理方法 Download PDFInfo
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- WO2023074378A1 WO2023074378A1 PCT/JP2022/038083 JP2022038083W WO2023074378A1 WO 2023074378 A1 WO2023074378 A1 WO 2023074378A1 JP 2022038083 W JP2022038083 W JP 2022038083W WO 2023074378 A1 WO2023074378 A1 WO 2023074378A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
- H01L21/67207—Apparatus for manufacturing or treating in a plurality of work-stations comprising a chamber adapted to a particular process
- H01L21/67225—Apparatus for manufacturing or treating in a plurality of work-stations comprising a chamber adapted to a particular process comprising at least one lithography chamber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/04—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a rotary work-table
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/228—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding thin, brittle parts, e.g. semiconductors, wafers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/162—Coating on a rotating support, e.g. using a whirler or a spinner
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/168—Finishing the coated layer, e.g. drying, baking, soaking
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/3021—Imagewise removal using liquid means from a wafer supported on a rotating chuck
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/6715—Apparatus for applying a liquid, a resin, an ink or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
- H01L21/67207—Apparatus for manufacturing or treating in a plurality of work-stations comprising a chamber adapted to a particular process
- H01L21/67219—Apparatus for manufacturing or treating in a plurality of work-stations comprising a chamber adapted to a particular process comprising at least one polishing chamber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6838—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping with gripping and holding devices using a vacuum; Bernoulli devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/10—Measuring as part of the manufacturing process
- H01L22/12—Measuring as part of the manufacturing process for structural parameters, e.g. thickness, line width, refractive index, temperature, warp, bond strength, defects, optical inspection, electrical measurement of structural dimensions, metallurgic measurement of diffusions
Definitions
- the present disclosure relates to a substrate processing apparatus and a substrate processing method.
- the substrate processing system described in Patent Document 1 includes a bonding device that bonds a first substrate and a second substrate, and a plate thickness reduction device that reduces the thickness of the first substrate of the superimposed substrates bonded by the bonding device.
- the plate thickness reduction device is, for example, a grinding device.
- a substrate processing apparatus is a second substrate having a bonding surface to be bonded to a first substrate to be thinned and a non-bonding surface opposite to the bonding surface.
- a film forming unit that forms a film
- a control unit that controls the film forming unit.
- the control unit forms the film on a part of the non-bonded surface, or forms the film thicker than the other part on a part of the non-bonded surface, based on the thickness distribution of the second substrate. to control.
- variations in the thickness of the thinned first substrate can be reduced.
- FIG. 1A and 1B are cross-sectional views showing a substrate processing method according to a reference embodiment
- FIG. 1A is a cross-sectional view showing the state of a polymerized substrate before thinning
- FIG. 1C is a cross-sectional view showing the state of the polymerized substrate
- FIG. 1C is a sectional view showing the state of the polymerized substrate after being thinned.
- FIG. 2 is a plan view showing a bonding surface of a first substrate and a bonding surface of a second substrate according to one reference embodiment.
- 3A and 3B are cross-sectional views showing a substrate processing method according to an embodiment
- FIG. 3A is a cross-sectional view showing measurement of the thickness distribution of the second substrate
- FIG. 3(C) is a cross-sectional view showing thinning
- FIG. 3(D) is a cross-sectional view showing the state of the polymerized substrate after thinning.
- FIG. 4 is a plan view showing the non-bonded surface of the second substrate according to one embodiment.
- 5A and 5B are cross-sectional views showing an example of formation of a film using a photosensitive material.
- FIG. 5A is a cross-sectional view showing application of the photosensitive material
- FIG. 5B is a cross-sectional view showing exposure.
- FIG. 5C is a sectional view showing development.
- 6A and 6B are cross-sectional views showing an example of formation of a film using an ink material.
- FIG. 6A is a cross-sectional view showing application of an ink material by an inkjet head
- FIG. FIG. 4 is a cross-sectional view showing the application of material
- FIG. 7 is a plan view showing a substrate processing apparatus according to one embodiment.
- 8A and 8B are cross-sectional views showing the substrate processing method according to the modification, FIG. 8A being a cross-sectional view showing measurement of the thickness distribution of the second substrate, and FIG. 8B showing formation of recesses.
- 8(C) is a cross-sectional view showing thinning
- FIG. 8(D) is a cross-sectional view showing the state of the polymerized substrate after thinning.
- a substrate processing method will be described with reference to FIG. 1A.
- the stacked substrate W includes a first substrate W1 to be thinned and a second substrate W2 bonded to the first substrate W1.
- the first substrate W1 has a bonding surface W1a bonded to the second substrate W2 and a non-bonding surface W1b opposite to the bonding surface W1a.
- the second substrate W2 has a bonding surface W2a bonded to the first substrate W1 and a non-bonding surface W2b opposite to the bonding surface W2a.
- the second substrate W2 is configured similarly to the first substrate W1. That is, the second substrate W2 includes, for example, a silicon wafer, a compound semiconductor wafer, or a glass substrate. As shown in FIG. 2, the second substrate W2 has, for example, a plurality of streets S2 arranged in a rectangular grid pattern and a device region A2 partitioned by the plurality of streets S2 on the bonding surface W2a of the second substrate W2. and a device D2 formed.
- Device D2 includes, for example, an electronic circuit.
- the device D1 of the first substrate W1 and the second substrate W2 are bonded together.
- Device D2 is electrically connected.
- the superimposed substrate W is divided into a plurality of semiconductor chips by dicing. As a result, it is possible to improve the performance and reduce the thickness of the semiconductor chip.
- the second substrate W2 may have variations in thickness t2.
- the variation in the thickness t2 is represented by, for example, the difference between the maximum and minimum values of the thickness t2 (TTV: Total Thickness Variation).
- Variation in the thickness t2 of the second substrate W2 depends on, for example, the thickness of the device D2 on the bonding surface W2a of the second substrate W2.
- the thinning device 38 thins the first substrate W1.
- the thinning device 38 includes a substrate holding portion 381 that adsorbs the superimposed substrate W, and a grindstone driving portion 383 that applies a grindstone 382 from the side opposite to the substrate holding portion 381 .
- the adsorption surface of the substrate holding part 381 has a size approximately equal to or greater than that of the main surface of the superimposed substrate W, and adsorbs the entire superposed substrate W.
- the substrate holding part 381 is, for example, a vacuum chuck, and vacuum-adsorbs the superimposed substrate W. As shown in FIG.
- the substrate holding part 381 flatly sucks the non-bonding surface W2b of the second substrate W2. Therefore, when the second substrate W2 has variations in thickness, minute unevenness occurs on the bonding surface W2a of the second substrate W2, and minute unevenness also occurs on the bonding surface W1a of the first substrate W1.
- the non-bonding surface W1b of the first substrate W1 is processed parallel to the non-bonding surface W2b of the second substrate W2.
- the thickness t1 of the thinned first substrate W1 varies.
- problems occur in post-processes such as the formation of electrodes.
- the electrodes are formed on the non-bonding surface W1b of the first substrate W1 and electrically connected to the device D1 formed on the bonding surface W1a of the first substrate W1.
- the measuring device 32 measures the thickness distribution of the second substrate W2.
- the measurement data includes coordinates on the non-bonded surface W2b of the second substrate W2 and the thickness t2 of the second substrate W2 for each coordinate.
- the measurement device 32 uses, for example, infrared light that passes through the second substrate W2 to measure the difference between the light reflected by the non-bonded surface W2b of the second substrate W2 and the light reflected by the bonded surface W2a of the second substrate W2. Using interference, the thickness distribution of the second substrate W2 is measured.
- the measurement device 32 includes, for example, a probe 321 that vertically irradiates the non-bonded surface W2b of the second substrate W2 with infrared light and receives the light reflected by the second substrate W2, and a probe 321 through an optical fiber.
- a light source connected to , a photodetector connected to the probe 321 via an optical fiber, and a moving mechanism for moving the probe 321 relative to the second substrate W2.
- the non-bonding surface W2b of the second substrate W2 faces downward in FIG. 3A, it may face upward, and the superimposed substrate W may be turned upside down.
- the measuring device 32 measures the thickness distribution of the second substrate W2 after bonding the first substrate W1 and the second substrate W2.
- a thickness distribution of the substrate W2 may be measured.
- a film F is formed on part of the non-bonding surface W2b of the second substrate W2 based on the thickness distribution of the second substrate W2. Formation of the film F is performed under the control of the controller 90, which will be described later.
- the control device 90 forms the film F at the position where the thickness t2 of the second substrate W2 is the minimum value, and does not form the film F at the position where the thickness t2 of the second substrate W2 is the maximum value.
- the control device 90 forms the film F in a rectangular grid pattern along the plurality of streets S2 (see FIG. 4). reference). If the thickness of the device area A2 of the second substrate W2 is smaller than the thickness of the street S2 of the second substrate W2, the control device 90 forms the island-like film F in each device area A2.
- the thickness of the film F is changed according to the difference (TTV) between the maximum value and the minimum value of the thickness t2 of the second substrate W2.
- TTV the difference between the maximum value and the minimum value of the thickness t2 of the second substrate W2.
- the thinning device 38 moves the second substrate W2, which has been bonded in advance to the second substrate W2, with the film F formed on a part of the non-bonding surface W2b of the second substrate W2.
- One substrate W1 is thinned.
- the substrate holding part 381 elastically deforms the second substrate W2 by sucking the second substrate W2 through the film F.
- the second substrate W2 is elastically deformed so that part of the second substrate W2 enters the opening of the film F.
- FIG. 3C the thinning device 38 moves the second substrate W2, which has been bonded in advance to the second substrate W2, with the film F formed on a part of the non-bonding surface W2b of the second substrate W2.
- One substrate W1 is thinned.
- the substrate holding part 381 elastically deforms the second substrate W2 by sucking the second substrate W2 through the film F.
- the second substrate W2 is elastically deformed so that part of the second substrate W2 enters the opening of the film F.
- the bonding surface W2a of the second substrate W2 becomes flat, and the bonding surface W1a of the first substrate W1 also becomes flat.
- the thinning device 38 processes the non-bonded surface W1b of the first substrate W1 parallel to the bonded surface W1a of the first substrate W1 by using the grindstone 382 . Therefore, as shown in FIG. 3D, the thickness t1 of the thinned first substrate W1 becomes uniform. Variations in the thickness t1 of the thinned first substrate W1 can be reduced as compared with the reference embodiment.
- a laser processing device (not shown) may be used for thinning the first substrate W1.
- the laser processing device forms a modified layer inside the first substrate W1.
- a plurality of modified layers are formed at intervals in the radial direction and the circumferential direction of the first substrate W1.
- the first substrate W1 can be thinned by dividing the first substrate W1 starting from the plurality of modified layers. In this case as well, by sucking the second substrate W2 through the film F, the bonding surface W2a of the second substrate W2 is planarized, and the non-bonding surface W1b of the first substrate W1 is planarized.
- the modified layer can be formed at a constant depth, and variations in the thickness t1 of the thinned first substrate W1 can be reduced.
- the film forming device 34 includes, for example, a coating device 341 shown in FIG. 5A, an exposure device 342 shown in FIG. 5B, and a developing device 343 shown in FIG. 5C.
- the coating device 341 forms a film F on the entire non-bonding surface W2b of the second substrate W2 by coating the entire non-bonding surface W2b of the second substrate W2 with a photosensitive material.
- the coating device 341 is, for example, a spin coating device, drops a photosensitive material onto the center of the non-bonding surface W2b of the rotating second substrate W2, and spreads the photosensitive material over the entire non-bonding surface W2b by centrifugal force.
- the thickness of the film F can be controlled by the type of photosensitive material (eg, material or viscosity), application conditions (eg, coating amount or rotation speed), or solidification conditions (eg, drying temperature).
- the thickness of the film F can also be controlled by the number of times the photosensitive material is applied.
- the exposure device 342 exposes a portion of the film F.
- the photosensitive material is of a positive type in which the exposed portion is removed by development, but may be of a negative type in which the exposed portion remains after development.
- the exposure device 342 is arranged such that after the development, the film F remains at the position where the thickness t2 of the second substrate W2 is the minimum value and the film F does not remain at the position where the thickness t2 of the second substrate W2 is the maximum value. , expose a portion of the film F;
- the exposure device 342 uses, for example, a light-shielding film having an opening pattern to expose light in a rectangular grid pattern along a plurality of streets S2 or in an island pattern for each device region A2.
- the developing device 343 develops the film F exposed by the exposure device 342 .
- the position of the film F remaining after development is controlled by the exposure position.
- the developing device 343 is, for example, a spin developing device, drips developer onto the center of the non-bonded surface W2b of the rotating second substrate W2, and spreads the developer over the entire non-bonded surface W2b by centrifugal force.
- the developing device 343 may be a spray developing device, a dip developing device, or the like.
- the film forming device 34 includes, for example, a coating device 344 shown in FIG. 6(A) or a coating device 345 shown in FIG. 6(B).
- a coating device 344 shown in FIG. 6A includes an inkjet head 3441 that ejects an ink material, and a moving mechanism 3442 that relatively moves the inkjet head 3441 with respect to the second substrate W2.
- the formation position of the film F is controlled by the ejection position of the ink material.
- the inkjet head 3441 may have a plurality of nozzles, and each nozzle may independently eject a different ink material. The viscosity of the ink material or the particle size of the particles contained in the ink material can be changed.
- the applicator 345 shown in FIG. 6(B) includes an ink pen 3451 that applies ink material and a moving mechanism 3452 that moves the ink pen 3451 relative to the second substrate W2.
- the formation position of the film F is controlled by the coating position of the ink material.
- the coating device 345 may have a plurality of ink pens 3451 and each ink pen 3451 may independently eject a different ink material. The viscosity of the ink material or the particle size of the particles contained in the ink material can be changed.
- These coating devices 344 and 345 form a film F on a portion of the non-bonding surface W2b of the second substrate W2 by applying an ink material to a portion of the non-bonding surface W2b of the second substrate W2.
- the coating devices 344 and 345 form the film F at the position where the thickness t2 of the second substrate W2 is the minimum value, and do not form the film F at the position where the thickness t2 of the second substrate W2 is the maximum value.
- an ink material it is easier to correct the formation position of the film F than when using a photosensitive material.
- the thickness of the film F can be controlled by the applied amount of the ink material, the viscosity of the ink material, the particle size of the particles contained in the ink material, or the like.
- the thickness of the film F can also be controlled by the number of times the ink material is applied.
- the film forming apparatus 34 of the above embodiment forms the film F on a portion of the non-bonded surface W2b of the second substrate W2, but the film F may be formed on the entire non-bonded surface W2b.
- the film F may be formed on a portion of the joint surface W2b to be thicker than the other portion.
- the film forming apparatus 34 reduces the thickness of the film F at a position where the second substrate W2 is thicker.
- the substrate processing apparatus 1 forms a film on a portion of the non-bonding surface W2b of the second substrate W2 of the superposed substrate W, or forms a film F thicker than the other portion on a portion of the non-bonding surface W2b, In this state, the first substrate W1 of the superimposed substrate W is thinned.
- the first substrate W ⁇ b>1 and the second substrate W ⁇ b>2 are bonded in advance, and the superimposed substrate W is carried into the substrate processing apparatus 1 .
- the substrate processing apparatus 1 includes a loading/unloading station 2 , a processing station 3 and a control device 90 .
- the substrate processing apparatus 1 may include at least the film forming device 34 and the control device 90 .
- the loading/unloading station 2 includes a mounting table 21 .
- the mounting table 21 is for mounting the cassette C thereon.
- the cassette C accommodates a plurality of superimposed substrates W at intervals in the vertical direction.
- the mounting table 21 includes a plurality of mounting plates 22 arranged in a row in the Y-axis direction.
- a cassette C is mounted on each of the plurality of mounting plates 22 .
- the number of mounting plates 22 is not particularly limited.
- the number of cassettes C is not particularly limited.
- the loading/unloading station 2 has a first transfer area 23 arranged between the mounting table 21 and the processing station 3 and a first transfer device 24 for transferring the superimposed substrate W in the first transfer area 23 .
- the first transport device 24 includes a transport arm that holds the superimposed substrate W. As shown in FIG.
- the transport arm is capable of horizontal (both X and Y) and vertical movement and rotation about a vertical axis.
- the number of first transfer arms may be one or plural.
- the processing station 3 includes, for example, a first transition device 31, a measurement device 32, a first reversing device 33, a film forming device 34, a second reversing device 35, a second transition device 36, and an alignment device 37. , a thinning device 38 , a first cleaning device 39 and a second cleaning device 40 .
- the arrangement and number of these devices 31-40 are not limited to the arrangement and number shown in FIG.
- the first transition device 31 and the second transition device 36 temporarily accommodate the superimposed substrate W.
- the measuring device 32 measures the thickness distribution of the second substrate W2.
- the first reversing device 33 and the second reversing device 35 reverse the superimposed substrate W.
- the film forming device 34 forms a film F on a portion of the non-bonding surface W2b of the second substrate W2.
- the alignment device 37 detects the center of the superposed substrate W.
- the alignment device 37 may detect the crystal orientation of the first substrate W1 or the second substrate W2 in addition to the center of the superimposed substrate W, specifically the crystal orientation of the first substrate W1 or the second substrate W2. Representing notches or orientation flats may be detected.
- the thinning device 38 thins the first substrate W1.
- the first cleaning device 39 and the second cleaning device 40 clean the superposed substrate W.
- the processing station 3 includes a second transfer area 51 arranged with the first transition device 31 interposed between the processing station 3 and the first transfer area 23 , and a second transfer device 52 for transferring the superimposed substrate W in the second transfer area 51 . and have The second transport device 52 is configured in the same manner as the first transport device 24 and transports the overlapped substrate W between a plurality of devices adjacent to the second transport area 51 .
- the processing station 3 also includes a third transfer area 53 surrounded on three sides by the alignment device 37, the thinning device 38, and the first cleaning device 39, and a third transfer device for transferring the superimposed substrate W in the third transfer region 53. 54 and .
- the third transport device 54 is configured in the same manner as the first transport device 24 and transports the superimposed substrates W between a plurality of devices adjacent to the third transport area 53 .
- the control device 90 is, for example, a computer, and includes a CPU (Central Processing Unit) 91 and a storage medium 92 such as a memory.
- the storage medium 92 stores programs for controlling various processes executed in the substrate processing apparatus 1 .
- the control device 90 controls the operation of the substrate processing apparatus 1 by causing the CPU 91 to execute programs stored in the storage medium 92 .
- the operation of the substrate processing apparatus 1 will be described. The following operations are performed under the control of the controller 90 .
- the first transfer device 24 takes out the superimposed substrate W from the cassette C and transfers it to the first transition device 31 .
- the second transport device 52 takes out the superimposed substrate W from the first transition device 31 and transports it to the measuring device 32 .
- the measuring device 32 measures the thickness distribution of the second substrate W2 as shown in FIG. 3(A).
- the measurement data includes coordinates on the non-bonded surface W2b of the second substrate W2 and the thickness t2 of the second substrate W2 for each coordinate.
- the measurement device 32 transmits measurement data to the control device 90 .
- the control device 90 receives measurement data transmitted by the measurement device 32 .
- the second transfer device 52 takes out the superimposed substrate W from the measuring device 32 and transfers it to the first reversing device 33 .
- the first reversing device 33 turns the superimposed substrate W upside down so that the non-bonded surface W2b of the second substrate W2 faces upward.
- the second transfer device 52 takes out the superposed substrate W from the first reversing device 33 and transfers it to the film forming device 34 .
- the measuring device 32 measures the thickness distribution of the second substrate W2 with the non-bonded surface W2b of the second substrate W2 facing downward. A thickness distribution of the second substrate W2 may be measured.
- the first reversing device 33 may be omitted, and the second conveying device 52 conveys the superimposed substrate W taken out from the measuring device 32 to the film forming device 34 .
- the film forming device 34 forms a film F on part of the non-bonding surface W2b of the second substrate W2, as shown in FIG. 3(B).
- the film forming apparatus 34 forms a film F in a square grid shape along a plurality of streets S2 (see FIG. 2) when viewed from the direction orthogonal to the joint surface W2a.
- the film forming apparatus 34 may form an island-shaped film F for each device region A2 when viewed from a direction orthogonal to the bonding surface W2a.
- the film forming apparatus 34 may form the film F over the entire non-bonded surface W2b of the second substrate W2. Just do it.
- the film F may be formed in the plurality of streets S2 to be thicker than the device region A2, or the film F may be formed in each device region to be thicker than the plurality of streets S2. good.
- the second transfer device 52 takes out the superposed substrate W from the film forming device 34 and transfers it to the second reversing device 35 .
- the second reversing device 35 turns the superimposed substrate W upside down so that the non-bonded surface W2b of the second substrate W2 faces downward.
- the second transfer device 52 takes out the superimposed substrate W from the second reversing device 35 and transfers it to the second transition device 36 .
- the second transfer device 52 takes out the superimposed substrate W from the second transition device 36 and transfers it to the alignment device 37 .
- the alignment device 37 detects the center of the superimposed substrate W by detecting the periphery of the superimposed substrate W, for example.
- the alignment device 37 may also detect the crystal orientation of the first substrate W1 or the second substrate W2, and specifically may detect notches and the like.
- the third transfer device 54 takes out the superimposed substrate W from the alignment device 37 and transfers it to the thinning device 38 .
- the control device 90 controls the third transfer device 54 based on the detection result of the alignment device 37 to align the center of the substrate holding part 381 of the thinning device 38 with the center of the superimposed substrate W. Further, the control device 90 controls the third transfer device 54 based on the detection result of the alignment device 37 so that the first substrate W ⁇ b>1 or the second substrate W ⁇ b>1 or the second substrate W ⁇ b>1 is rotated together with the substrate holder 381 of the thinning device 38 in the rotating coordinate system. Control is performed to align the crystal orientation of the substrate W2 with a desired orientation.
- the thinning device 38 thins the first substrate W1.
- the thinning device 38 in a state where the substrate holding part 381 holds the superimposed substrate W via the film F, thins the film from the side opposite to the substrate holding part 381 (for example, the upper side).
- the first substrate W1 is ground by applying the grindstone 382 to the superposed substrate W.
- the polymerized substrate W is deformed according to the opening pattern of the film F or the thickness distribution of the film F.
- variations in the thickness t1 of the thinned first substrate W1 are reduced.
- the third transfer device 54 takes out the superposed substrate W from the thinning device 38 and transfers it to the first cleaning device 39 .
- the first cleaning device 39 cleans the superposed substrate W to remove particles such as processing waste.
- the first cleaning device 39 may remove the membrane F.
- the first cleaning device 39 removes the film F by dissolving the film F in a solvent.
- the second transfer device 52 takes out the superposed substrate W from the first cleaning device 39 and transfers it to the second cleaning device 40 .
- the second cleaning device 40 etches the superposed substrate W to remove the traces of processing.
- the second transfer device 52 takes out the superposed substrate W from the second cleaning device 40 and transfers it to the measurement device 32 .
- the measuring device 32 measures the thickness distribution of the thinned first substrate W ⁇ b>1 and transmits measurement data to the control device 90 .
- the control device 90 receives the measurement data transmitted by the measurement device 32 .
- the controller 90 controls the first substrate W1 so that the variation in the thickness t1 of the first substrate W1 after the next thinning falls within the allowable range.
- the formation position of the film F or the thickness distribution of the film F on the non-bonded surface W2b of the two substrates W2 is corrected.
- the second transport device 52 takes out the superimposed substrate W from the measuring device 32 and transports it to the first transition device 31 .
- the first transfer device 24 takes out the superimposed substrate W from the first transition device 31 and stores it in the cassette C.
- the superimposed substrate W is carried out from the substrate processing apparatus 1 while being stored in the cassette C.
- the substrate processing apparatus 1 may include a bonding device, and the bonding device may bond the first substrate W1 and the second substrate W2.
- the substrate processing apparatus 1 may include a bonding device, and the bonding device may bond the first substrate W1 and the second substrate W2.
- the thickness distribution of the second substrate W2 may be measured before bonding the first substrate W1 and the second substrate W2.
- the formation of the film F may be performed before bonding the first substrate W1 and the second substrate W2.
- the substrate processing apparatus 1 does not have to include the measuring device 32.
- the measuring device 32 may be provided outside the substrate processing apparatus 1 and transmit measurement data to the control device 90 .
- the thickness distribution of the second substrate W2 has the same tendency for each lot of the second substrate W2 (for example, the width of the street S2, the pitch of the street S2, or the type of device D2). Therefore, the control device 90 may store coordinates for forming the film F in advance and control the film forming device 34 according to the stored data. It is therefore possible not to use the measuring device 32 at all.
- the streets S2 and the devices D2 may not be formed on the second substrate W2.
- the film F may be formed based solely on the measurement data of the measurement device 32, regardless of the positions of the streets S2 and the device D2.
- the film F is formed on a part of the non-bonded surface W2b of the second substrate W2 before thinning the first substrate W1.
- a recess W2c is formed in a part of the non-bonding surface W2b of the second substrate W2. Differences will be mainly described below.
- the measuring device 32 measures the thickness distribution of the second substrate W2.
- the thickness distribution of the second substrate W2 is measured after bonding the first substrate W1 and the second substrate W2. may be measured.
- a recess W2c is formed in a portion of the non-bonding surface W2b of the second substrate W2 based on the thickness distribution of the second substrate W2. Formation of the recess W2c is performed under the control of the control device 90 .
- the recess W2c is formed at the position where the thickness t2 of the second substrate W2 is the maximum value, and the recess W2c is not formed at the position where the thickness t2 of the second substrate W2 is the minimum value.
- the control device 90 forms an island-shaped depression W2c in each device area A2. If the thickness of the second substrate W2 in the streets S2 is greater than the thickness in the device area A2 of the second substrate W2, the control device 90 forms recesses W2c in a square grid shape along the plurality of streets S2.
- the depth of the recess W2c is changed according to the difference (TTV) between the maximum value and the minimum value of the thickness t2 of the second substrate W2.
- TTV difference between the maximum value and the minimum value of the thickness t2 of the second substrate W2.
- the recess W2c is formed after bonding the first substrate W1 and the second substrate W2, but the recess W2c may be formed before bonding the first substrate W1 and the second substrate W2.
- a laser processing device 41 for example, is used to form the recess W2c.
- the laser processing device 41 performs ablation processing on the second substrate W2 by irradiating a laser beam onto the position where the recess W2c is to be formed.
- the position of the recess W2c is controlled by the irradiation position of the laser beam.
- the depth of the depression W2c is controlled by the irradiation intensity or irradiation time of the laser beam.
- a laser processing apparatus 41 is provided in the substrate processing apparatus 1 in place of the film forming apparatus 34 of FIG.
- the thinning device 38 forms a recess W2c in a part of the non-bonding surface W2b of the second substrate W2, and the second substrate W2 is bonded in advance to the second substrate W2.
- One substrate W1 is thinned.
- the substrate holding part 381 contacts and adsorbs the non-bonding surface W2b of the second substrate W2 to elastically deform the second substrate W2 and planarize the non-bonding surface W2b of the second substrate W2.
- the bonding surface W2a of the second substrate W2 is planarized, and the bonding surface W1a of the first substrate W1 is also planarized.
- the thinning device 38 processes the non-bonded surface W1b of the first substrate W1 parallel to the bonded surface W1a of the first substrate W1 by using the grindstone 382 . Therefore, as shown in FIG. 8D, the thickness t1 of the thinned first substrate W1 becomes uniform. Variations in the thickness t1 of the thinned first substrate W1 can be reduced as compared with the reference embodiment.
- a laser processing device (not shown) may be used for thinning the first substrate W1.
- the laser processing device forms a modified layer inside the first substrate W1.
- a plurality of modified layers are formed at intervals in the radial direction and the circumferential direction of the first substrate W1.
- the first substrate W1 can be thinned by dividing the first substrate W1 starting from the plurality of modified layers.
- the bonding surface W2a of the second substrate W2 is flattened, and the non-bonding surface W1b of the first substrate W1 is flattened.
- a modified layer can be formed in the first substrate W1, and variations in the thickness t1 of the thinned first substrate W1 can be reduced.
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Abstract
Description
34 膜形成装置(膜形成部)
90 制御装置(制御部)
F 膜
W 重合基板
W1 第1基板
W2 第2基板
W2b 非接合面
Claims (17)
- 薄化される予定の第1基板に接合される接合面と前記接合面とは反対向きの非接合面を有する第2基板の前記非接合面に膜を形成する膜形成部と、
前記膜形成部を制御する制御部と、
を備え、
前記制御部は、前記第2基板の厚み分布に基づき、前記非接合面の一部に前記膜を形成するか、又は前記非接合面の一部に他の一部よりも厚く前記膜を形成する制御を行う、基板処理装置。 - 前記第2基板は、前記接合面に、四角格子状に配列される複数のストリートと、複数の前記ストリートで区画されるデバイス領域に形成されるデバイスと、を有し、
前記制御部は、前記接合面に直交する方向から見たときに、複数の前記ストリートに沿って四角格子状に前記膜を形成するか、複数の前記ストリートに前記デバイス領域よりも厚く前記膜を形成するか、前記デバイス領域ごとに島状に前記膜を形成するか、前記デバイス領域ごとに複数の前記ストリートよりも厚く前記膜を形成する制御を行う、請求項1に記載の基板処理装置。 - 前記膜形成部は、前記第2基板の前記非接合面に感光材料を塗布することで前記第2基板の前記非接合面に前記膜を形成する塗布部と、前記膜の一部を露光する露光部と、前記露光部で露光した前記膜を現像する現像部と、を有する、請求項1又は2に記載の基板処理装置。
- 前記膜形成部は、前記第2基板の前記非接合面にインク材料を塗布することで前記膜を形成する塗布部を有する、請求項1又は2に記載の基板処理装置。
- 前記制御部は、前記第2基板の厚み分布の測定データを取得し、前記第2基板の厚みが最大値の位置には前記膜を形成しないか、前記第2基板の厚みが大きい位置ほど前記膜の厚みを小さくする制御を行う、請求項1又は2に記載の基板処理装置。
- 前記第2基板の厚み分布を測定する測定部を備える、請求項5に記載の基板処理装置。
- 前記第2基板の前記非接合面に前記膜を形成した状態で、予め前記第2基板と接合された前記第1基板を薄化する薄化部、を備える、請求項1又は2に記載の基板処理装置。
- 前記薄化部によって前記第1基板を薄化した後で、前記膜を除去する洗浄部を備える、請求項7に記載の基板処理装置。
- 第1基板と前記第1基板に対して接合された第2基板とを含み、前記第2基板は前記第1基板に接合される接合面と前記接合面とは反対向きの非接合面を含む、重合基板の前記第1基板を薄化する薄化部を備え、
前記薄化部は、
前記第2基板の前記非接合面の一部に形成された膜、又は前記非接合面の一部に他の一部よりも厚く形成された膜を介して、前記重合基板を吸着する基板保持部と、
前記基板保持部で吸着されている前記重合基板の前記第1基板に砥石を当てる砥石駆動部と、
を含む、基板処理装置。 - 薄化される予定の第1基板に接合される接合面と前記接合面とは反対向きの非接合面とを有する第2基板の前記非接合面に膜を形成することを含む、基板処理方法であって、
前記第2基板の厚み分布に基づき、前記非接合面の一部に前記膜を形成するか、又は前記非接合面の一部に他の一部よりも厚く前記膜を形成することを含む、基板処理方法。 - 前記第2基板は、前記接合面に、四角格子状に配列される複数のストリートと、複数の前記ストリートで区画されるデバイス領域に形成されるデバイスと、を有し、
前記接合面に直交する方向から見たときに、複数の前記ストリートに沿って四角格子状に前記膜を形成するか、複数の前記ストリートに前記デバイス領域よりも厚く前記膜を形成するか、前記デバイス領域ごとに島状に前記膜を形成するか、前記デバイス領域ごとに複数の前記ストリートよりも厚く前記膜を形成することを含む、請求項10に記載の基板処理方法。 - 前記第2基板の前記非接合面に感光材料を塗布することで前記第2基板の前記非接合面に前記膜を形成することと、前記膜の一部を露光することと、前記露光した前記膜を現像することと、を含む、請求項10又は11に記載の基板処理方法。
- 前記第2基板の前記非接合面にインク材料を塗布することで前記膜を形成することを含む、請求項10又は11に記載の基板処理方法。
- 前記第2基板の厚み分布の測定データを取得することと、前記第2基板の厚みが最大値の位置には前記膜を形成しないか、前記第2基板の厚みが大きい位置ほど前記膜の厚みを小さくすることと、を含む、請求項10又は11に記載の基板処理方法。
- 前記第2基板の前記非接合面の一部に前記膜を形成した状態で、予め前記第2基板と接合された前記第1基板を薄化することを含む、請求項10又は11に記載の基板処理方法。
- 前記第1基板を薄化した後で、前記膜を除去することを含む、請求項15に記載の基板処理方法。
- 第1基板と前記第1基板に対して接合された第2基板とを含み、前記第2基板は前記第1基板に接合される接合面と前記接合面とは反対向きの非接合面を含む、重合基板の前記第1基板を薄化することを含む、基板処理方法であって、
前記第2基板の前記非接合面の一部に形成された膜、又は前記非接合面の一部に他の一部よりも厚く形成された膜を介して、前記重合基板を基板保持部で吸着することと、
前記基板保持部で吸着されている前記重合基板の前記第1基板を砥石で研削することと、
を含む、基板処理方法。
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| KR1020247016661A KR20240090585A (ko) | 2021-10-26 | 2022-10-12 | 기판 처리 장치 및 기판 처리 방법 |
| US18/704,093 US20240412976A1 (en) | 2021-10-26 | 2022-10-12 | Substrate processing apparatus and substrate processing method |
| CN202280069361.4A CN118176566A (zh) | 2021-10-26 | 2022-10-12 | 基板处理装置和基板处理方法 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0750234A (ja) * | 1993-08-04 | 1995-02-21 | Komatsu Electron Metals Co Ltd | 半導体ウェーハ製造装置および製造方法 |
| JPH11163124A (ja) * | 1997-11-26 | 1999-06-18 | Nec Corp | 部分soi基板およびその製造方法 |
| JP2004363182A (ja) * | 2003-06-02 | 2004-12-24 | Sumitomo Mitsubishi Silicon Corp | 貼り合わせ誘電体分離ウェーハおよびその製造方法 |
| WO2009013849A1 (ja) * | 2007-07-26 | 2009-01-29 | Sharp Kabushiki Kaisha | 半導体装置及びその製造方法 |
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| JP2021103698A (ja) | 2018-04-02 | 2021-07-15 | 東京エレクトロン株式会社 | 基板処理システム |
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- 2022-10-12 CN CN202280069361.4A patent/CN118176566A/zh active Pending
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- 2022-10-12 WO PCT/JP2022/038083 patent/WO2023074378A1/ja not_active Ceased
- 2022-10-12 KR KR1020247016661A patent/KR20240090585A/ko active Pending
- 2022-10-14 TW TW111138932A patent/TW202331865A/zh unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0750234A (ja) * | 1993-08-04 | 1995-02-21 | Komatsu Electron Metals Co Ltd | 半導体ウェーハ製造装置および製造方法 |
| JPH11163124A (ja) * | 1997-11-26 | 1999-06-18 | Nec Corp | 部分soi基板およびその製造方法 |
| JP2004363182A (ja) * | 2003-06-02 | 2004-12-24 | Sumitomo Mitsubishi Silicon Corp | 貼り合わせ誘電体分離ウェーハおよびその製造方法 |
| WO2009013849A1 (ja) * | 2007-07-26 | 2009-01-29 | Sharp Kabushiki Kaisha | 半導体装置及びその製造方法 |
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| JP7761357B2 (ja) | 2025-10-28 |
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