WO2020226152A1 - 基板ホルダ、基板貼り合わせ装置および基板貼り合わせ方法 - Google Patents
基板ホルダ、基板貼り合わせ装置および基板貼り合わせ方法 Download PDFInfo
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- WO2020226152A1 WO2020226152A1 PCT/JP2020/018522 JP2020018522W WO2020226152A1 WO 2020226152 A1 WO2020226152 A1 WO 2020226152A1 JP 2020018522 W JP2020018522 W JP 2020018522W WO 2020226152 A1 WO2020226152 A1 WO 2020226152A1
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- substrate
- outer peripheral
- holder
- substrate holder
- region
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Images
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- 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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- 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
- H01L21/185—Joining of semiconductor bodies for junction formation
- H01L21/187—Joining of semiconductor bodies for junction formation by direct bonding
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- H01L21/68714—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
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- H01L21/68714—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68735—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by edge profile or support profile
Definitions
- the present invention relates to a substrate holder, a substrate bonding device, and a substrate bonding method.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2015-95649
- a substrate holder may include a central support portion that supports the central portion of the board.
- the substrate holder may be arranged outside the central support portion and may include an outer peripheral support portion that supports the outer peripheral portion of the substrate.
- the outer peripheral support portion may support the outer peripheral portion so that at least a part of the outer peripheral portion is curved toward the substrate holder with a curvature larger than that of the central portion.
- the outer peripheral support portion may have an annular wall portion that supports the peripheral edge side of the outer peripheral portion including at least a part of the region.
- the outer peripheral support portion may have an inner region arranged adjacent to the central support portion.
- the outer peripheral support portion may have an outer region arranged outside the inner region.
- the outer peripheral support portion may support the outer peripheral portion so that the portion of the outer peripheral portion supported by the outer region curves toward the substrate holder with a curvature larger than the portion supported by the inner region.
- the outer peripheral support portion may have a curved surface that supports the outer peripheral portion so that at least a part of the region is curved toward the substrate holder with a curvature larger than that of the central portion.
- the curved surface may include a plurality of ventilation holes and may be able to adsorb the outer peripheral portion of the substrate by negative pressure.
- the outer peripheral support portion may have a plurality of support pins whose virtual support surface is a curved surface.
- the outer peripheral support portion may support the outer peripheral portion so that at least a part of the region is curved toward the substrate holder with a curvature larger than that of the central portion due to the curved surface.
- the outer peripheral support portion may include a plurality of suction regions, each of which can individually suck the outer peripheral portion of the substrate.
- the plurality of suction regions may be located around a hole into which a lift-up pin that pushes the outer peripheral portion of the substrate is inserted.
- a substrate holder in one aspect of the invention, may include a central support portion that supports the central portion of the board.
- the substrate holder may be arranged outside the central support portion and may include an outer peripheral support portion that supports the outer peripheral portion of the substrate.
- the rate of change in the height of the support surface of the outer peripheral support with respect to the change in the distance from the center of the central support may be larger than the rate of change in the height of the support surface of the central support with respect to the change in the distance from the center. ..
- a substrate holder is provided.
- the board holder is a board holder for holding a board, contacting a part of the board with a part of another board to form a contact area, and then bonding the board and another board by expanding the contact area.
- the substrate holder may include a deceleration portion on the outer periphery of the substrate that reduces at least one of the rate of progress of expansion of the contact area and the rate of movement of fluid between the substrate and other substrates.
- a substrate holder is provided.
- the board holder is a board holder for holding a board, contacting a part of the board with a part of another board to form a contact area, and then bonding the board and another board by expanding the contact area.
- the substrate holder may include an open portion that opens the fluid moving between the substrate and the other substrate to the outside of the substrate and the other substrate by expanding the contact area.
- a substrate bonding device that uses the above-mentioned substrate holder to bond a substrate held by the substrate holder to another substrate.
- the substrate bonding device may include a drive unit that deforms the outer peripheral support portion of the substrate holder so that the substrate is curved toward the substrate holder with a curvature larger than that of the central portion in at least a part of the outer peripheral portion. ..
- the substrate bonding device may bond a substrate and another substrate by contacting a part of the substrate with a part of another substrate to form a contact region and then expanding the contact region.
- the substrate bonding device may further include a detection unit that detects that the contact region between the substrate and another substrate has reached a predetermined position.
- the drive unit may deform the outer peripheral support unit in response to the detection unit detecting that the contact region has reached the position.
- An acquisition unit may be further provided to acquire information on at least one of the position of the notch formed on the outer peripheral portion, the manufacturing process and the material.
- the drive unit may have a different amount of deformation in the outer peripheral support portion of the substrate holder according to the information acquired by the acquisition unit.
- the board bonding device may include a plurality of board holders. At least one of the curvature of at least a portion of the region curved by the outer peripheral support, the width of at least a portion of the region, and the position of at least a portion of the region may be different for each of the plurality of substrate holders.
- a substrate bonding method is provided.
- the substrate bonding method is a stage in which the substrate is held by the substrate holder, the central portion of the substrate is held by the substrate holder, and at least a part of the outer peripheral portion of the substrate is the central portion toward the substrate holder. It may be provided with a step of holding the outer periphery so as to be curved with a greater curvature.
- the substrate bonding method may include a step of holding another substrate by another substrate holder.
- the substrate bonding method includes a substrate bonding step in which a substrate and another substrate are bonded by contacting a part of the substrate with a part of another substrate to form a contact area and then expanding the contact area. You may.
- FIG. 5 is a schematic partially enlarged plan view for explaining the difference between the BW end positions 214 around the notches 211 and 231 and the risk of occurrence of adiabatic expansion voids due to the difference.
- FIG. 16 is a schematic partially enlarged cross-sectional view of BW end positions 214 of the substrates 210 and 230 in the bonding process using the substrate holder 290, which is a modification of the substrate holder 280 shown in FIG. It is a partially enlarged view which shows the process of placing the substrate 230 including the taper portion 237 on the substrate holder 290 shown in FIG. It is a schematic partially enlarged sectional view of the BW end position 214 of the substrate 210, 230 in the bonding process using the substrate 230 and the substrate holder 290 shown in FIG.
- FIG. 17 It is a schematic partial enlarged sectional view of the BW end position 214 of the substrate 210, 230 in the bonding process using the substrate holder 290 shown in FIG. 17 when the substrate 210 includes a step portion 213 and a convex warp film 216. .. BW end of the substrates 210 and 230 in the bonding process using the substrate holder 290 shown in FIG. 17 when the substrate 210 includes the step portion 213 and the substrates 210 and 230 include the void inflow grooves 218 and 238, respectively. It is a schematic partial enlarged sectional view of position 214. BW end of the substrates 210 and 230 in the bonding process using the substrate holder 240 shown in FIG. 9 when the substrate 210 includes the step portion 213 and the substrates 210 and 230 include the back surface step portions 219 and 239, respectively. It is a schematic partial enlarged sectional view of position 214.
- FIG. 1 is a schematic plan view of the substrate bonding device 100.
- the board bonding device 100 includes a housing 110, substrate cassettes 120 and 130, a holder stocker 400, a transport unit 140, a bonding unit 300, a pre-aligner 500, and a control unit 150.
- the housing 110 accommodates the substrate cassettes 120 and 130, the transport unit 140, the bonding unit 300, the holder stocker 400, and the pre-aligner 500.
- the inside of the housing 110 is temperature controlled, and is kept at room temperature, for example.
- the substrate cassette 120 accommodates the substrates 210 and 230 to be bonded.
- the substrate cassette 130 accommodates a laminated substrate 201 made by laminating at least two substrates 210 and 230.
- Each of the substrates 210 and 230 has a plurality of structures formed on the surface of the silicon wafer.
- An example of the plurality of structures is a plurality of circuit regions periodically arranged in the plane direction on the surfaces of the substrates 210 and 230, and each of the plurality of circuit regions is formed by a photolithography technique or the like.
- a connection structure such as a pad, a bump, etc., which serves as a connection terminal when the boards 210, 230 are electrically connected to other boards 230, 210, a lead frame, etc., is provided.
- Another example of the plurality of structures is a plurality of alignment marks that serve as an index for aligning the substrates 210 and 230 with the other substrates 230 and 210.
- the plurality of alignment marks are provided, for example, on scribe lines arranged between a plurality of circuit regions on the respective surfaces of the substrates 210 and 230.
- the holder stocker 400 accommodates the board holders 220 and 240 that hold the boards 210 and 230.
- the substrate holders 220 and 240 are made of a hard material such as alumina ceramics, and the substrates 210 and 230, the laminated substrate 201 and the like are attracted and held by an electrostatic chuck, a vacuum chuck or the like.
- the substrate holders 220 and 240 may have a flat or medium-convex shape as the overall shape of the support surface, and may be a free-form surface such as a shape corresponding to the in-plane distortion of the substrate to be held. It may be.
- the transport unit 140 holds and transports the substrates 210, 230, the substrate holders 220, 240, the laminated substrate 201, etc. individually, or the substrate holders 220, 240, etc., which hold the substrates 210, 230, the laminated substrate 201, etc. Hold and transport.
- the bonding unit 300 has an upper stage 322 and a lower stage 332 facing each other.
- the upper stage 322 holds the substrates 210 and 230 via the substrate holders 220 and 240.
- the lower stage 332 also holds the substrates 210 and 230 via the substrate holders 220 and 240.
- the upper stage 322 and the lower stage 332 may directly hold the substrates 210 and 230, respectively.
- the substrate holder may be fixed to the upper stage 322 and the lower stage 332.
- a board holder it may refer to a transportable device such as the board holders 220 and 240, and a non-transportable device such as fixed to the upper stage 322 and the lower stage 332. There is also.
- the bonding unit 300 aligns the substrates 210 and 230 held by the upper stage 322 and the lower stage 332 with each other. After that, the bonding portion 300 maintains a state in which one of the substrates 210 and 230 is held by one of the upper stage 322 and the lower stage 332, and the substrate by the other of the upper stage 322 and the lower stage 332 is used. By releasing the holding of the other of 210 and 230, the substrates 210 and 230 are brought into contact with each other and bonded to each other.
- the bonded state may mean a state in which the terminals provided on the two laminated boards are connected to each other, whereby electrical continuity is ensured between the two boards. Further, it may refer to a state in which the terminals provided on the two laminated substrates are connected to each other and the bonding strength between the two substrates is equal to or higher than a predetermined strength. Further, when the terminals of the two boards are electrically connected by performing a process such as annealing on the two laminated boards, the two boards are temporarily bonded before the process such as annealing. It may refer to a state, that is, a state of being temporarily joined.
- a terminal for electrical connection when a terminal for electrical connection is formed on the two substrates after joining the two substrates, it may indicate a state in which the bonding surfaces of the two substrates on which the terminals are not formed are bonded to each other.
- the bonding strength of the two substrates exceeds a predetermined strength by performing a treatment such as annealing on the two laminated substrates, it means the above-mentioned temporary bonding state before the treatment such as annealing. You may.
- the state in which the bonding strength becomes equal to or higher than a predetermined strength by annealing includes, for example, a state in which the surfaces of two substrates are covalently bonded to each other.
- the temporarily joined state includes a state in which two overlapping substrates can be separated and reused.
- the pre-aligner 500 aligns the boards 210 and 230 with the board holders 220 and 240, respectively, and holds the boards 210 and 230 in the board holders 220 and 240, respectively.
- the control unit 150 controls each part of the substrate bonding device 100 in an integrated manner in cooperation with each other. Further, the control unit 150 receives a user's instruction from the outside, for example, and sets the manufacturing conditions when manufacturing the laminated substrate 201. The control unit 150 may further have a user interface for displaying the operating state of the substrate bonding device 100 to an external user.
- bare silicon which is an unprocessed silicon wafer on which no structure is formed.
- a SiGe substrate to which Ge is added, a Ge single crystal substrate, a compound semiconductor wafer of Group III-V or Group II-VI, a glass substrate, or the like can also be bonded.
- the object to be bonded may be a circuit board and an unprocessed substrate, or may be an unprocessed substrate.
- the substrates 210 and 230 to be bonded may be a laminated substrate 201 having a plurality of substrates already laminated.
- the substrates 210 and 230 to be bonded may have substantially the same external dimensions as each other in a state where distortion is not generated, for example.
- the outer shapes of the substrates 210 and 230 may be substantially circular or may have other shapes.
- FIGS. 2 to 6 are schematic cross-sectional views of the bonded portion 300.
- the configuration of the bonding portion 300 of the present embodiment and the outline of the bonding process between the substrate 210 and the substrate 230 in the bonding portion 300 will be described with reference to FIGS. 2 to 6.
- the upper stage 322 of the bonding portion 300 holds the substrate 210 via the substrate holder 220
- the lower stage 332 holds the substrate 230 via the substrate holder 240.
- the transport unit 140 carries the substrate holder 220 holding the substrate 210 into the bonding unit 300 and holds it on the upper stage 322, and the substrate is held.
- the substrate holder 240 holding the 230 is carried into the bonding portion 300 and held by the lower stage 332.
- FIG. 2 shows a state in which the substrate is held on each stage via the substrate holder.
- the upper stage 322 has a holding function of a vacuum chuck, an electrostatic chuck, etc., and is fixed downward to the top plate 316 of the frame body 310.
- the lower stage 332 has a holding function of a vacuum chuck, an electrostatic chuck, and the like, and is mounted on the upper surface of the Y-direction drive unit 333 superposed on the X-direction drive unit 331 arranged on the bottom plate 312 of the frame body 310.
- FIGS. 2 to 6 the configurations of the support surfaces of the substrate holders 220 and 240 are simplified and drawn flat.
- a microscope 324 and an activator 326 are fixed to the top plate 316 to the side of the upper stage 322.
- the microscope 324 can observe the upper surface of the substrate 230 held by the lower stage 332.
- the activation device 326 generates plasma that cleans the upper surface of the substrate 230 indirectly held by the lower stage 332.
- oxygen gas which is a processing gas
- oxygen ions are irradiated to the bonded surfaces of the two substrates, so that, for example, the substrate 230 is placed on Si.
- the bond of SiO on the bonding surface is cut to form a dangling bond of Si and O. Forming such a dangling bond on the surface of the wafer may be referred to as activation.
- a hydrophilization device for hydrophilizing the surface of a wafer is made by applying pure water to the bonded surfaces of two wafers to make the bonded surfaces hydrophilic and clean the bonded surfaces.
- the X-direction drive unit 331 moves in the direction indicated by the arrow X in the drawing in parallel with the bottom plate 312.
- the Y-direction drive unit 333 moves on the X-direction drive unit 331 in parallel with the bottom plate 312 in the direction indicated by the arrow Y in the drawing.
- the lower stage 332 moves two-dimensionally in parallel with the bottom plate 312.
- the lower stage 332 is supported by the elevating drive unit 338, and is moved up and down in the direction indicated by the arrow Z in the drawing by the elevating drive unit 338. In this way, the lower stage 332 is relative to the substrate 230 held by the substrate holder 240 and the substrate 210 held by the substrate holder 220 between the upper stage 322 that holds the substrate 210 via the substrate holder 220. Displace the position.
- the amount of movement of the lower stage 332 by the X-direction drive unit 331, the Y-direction drive unit 333, and the elevating drive unit 338 is precisely measured using an interferometer or the like.
- a microscope 334 and an activation device 336 are mounted on the Y-direction drive unit 333 on the side of the lower stage 332, respectively.
- the microscope 334 can observe the surface of the lower surface of the substrate 210 held by the upper stage 322.
- the activation device 336 generates plasma that cleans the surface of the substrate 210.
- the activation devices 326 and 336 are provided in a device different from the bonding section 300, and the surface-activated substrate and the substrate holder are transported from the activation devices 326 and 336 to the bonding section 300 by a robot. It may be.
- the bonding unit 300 may further include a rotation drive unit that rotates the lower stage 332 around a rotation axis perpendicular to the bottom plate 312, and a swing drive unit that swings the lower stage 332.
- a rotation drive unit that rotates the lower stage 332 around a rotation axis perpendicular to the bottom plate 312
- a swing drive unit that swings the lower stage 332.
- the microscopes 324 and 334 are calibrated by the control unit 150 by focusing on each other and observing common indicators. As a result, the relative positions of the pair of microscopes 324 and 334 in the bonded portion 300 are measured.
- the control unit 150 operates the X-direction drive unit 331 and the Y-direction drive unit 333, and the substrate is subjected to the microscopes 324 and 334 whose relative positions are known.
- the alignment marks provided on each of the 210 and the substrate 230 are detected, and the relative positions of the substrate 210 and the substrate 230 are calculated.
- the amount of misalignment between the corresponding alignment marks on the substrate 210 and the substrate 230 is equal to or less than a predetermined threshold value, and the amount of misalignment of the corresponding connection structure between the substrate 210 and the substrate 230 is a predetermined threshold value.
- the relative movement amount between the substrate 210 and the substrate 230 is calculated as follows.
- the misalignment may refer to the misalignment of the corresponding alignment marks between the bonded boards 210 and 230, and the positions of the corresponding connection structures between the bonded boards 210 and 230. You may point to the deviation.
- the misalignment may be due to the difference in the amount of distortion that occurs on each of the two substrates 210 and 230.
- the threshold value may be the amount of deviation that enables electrical conduction between the substrates 210 and 230 when the mutual bonding of the substrates 210 and 230 is completed, and is provided on the substrates 210 and 230, respectively. It may be the amount of displacement when the structures are in contact with each other at least in part.
- the control unit 150 is in a state where the connection structures do not contact each other or appropriate electrical continuity cannot be obtained, or a predetermined state between the connection structures. It may be determined that the joint strength of the above is not obtained.
- the bonded surfaces of the substrate 210 and the substrate 230 are chemically activated.
- the control unit 150 resets the position of the lower stage 332 to the initial position and then moves it horizontally to scan the surfaces of the substrate 210 and the substrate 230 with the plasma generated by the activation devices 326 and 336. As a result, the surfaces of the substrate 210 and the substrate 230 are cleaned, and the chemical activity is increased.
- the activation of the substrate 210 and the substrate 230 may be performed before the calculation of the relative position between the substrates, or may be performed before the substrate 210 and the substrate 230 are carried into the substrate bonding device 100.
- the surfaces of the substrates 210 and 230 can be activated by sputter etching using an inert gas, an ion beam, a high-speed atomic beam, or the like.
- an ion beam or a high-speed atomic beam is used, it is possible to generate the bonded portion 300 under reduced pressure.
- the substrates 210 and 230 can be activated by ultraviolet irradiation, ozone asher, or the like.
- a liquid or gas etchant may be used to activate the substrates 210, 230 by chemically cleaning the surfaces. After activating the surfaces of the substrates 210 and 230, the surfaces of the substrates 210 and 230 may be hydrophilized by a hydrophilization device.
- control unit 150 moves the lower stage 332 to align the substrate 210 and the substrate 230 with each other. More specifically, the control unit 150 sets the lower stage 332 so that the positions of the alignment marks match each other based on the relative positions of the microscopes 324 and 334 and the positions of the alignment marks on the substrates 210 and 230. Move it.
- control unit 150 operates the elevating drive unit 338 to raise the lower stage 332 and bring the substrate 210 and the substrate 230 close to each other. Then, a part of the substrate 230 and a part of the substrate 210 are brought into contact with each other to form a contact region, and then the substrate 230 and the substrate 210 are bonded together by expanding the contact region.
- the protruding portion of the substrate 230 deformed in a convex shape by following the curved support surface of the substrate holder 240 is brought into contact with the substrate 210 to form a contact region. After that, by expanding the contact area, the substrate 210 and the substrate 230 are bonded together in a deformed state.
- the substrate 210 and the substrate 230 are brought close to each other, and a part of the substrate 210 and the substrate 230 are brought into contact with each other to form a contact region at the already activated contact portion. Further, by releasing the holding of the substrate 210 by the substrate holder 220, the regions adjacent to the contact portion are autonomously attracted to each other by the intermolecular force between the activated surfaces, and the contact region becomes the substrate 210 and the substrate 210.
- a bonding wave (BW) that sequentially spreads outward in the radial direction of the substrate 230 is generated, whereby the substrate 210 and the substrate 230 are bonded together in a deformed state.
- the bonding process includes a process from when the substrate 210 and the substrate 230 partially contact each other until the expansion of the contact region is completed.
- FIG. 7 is an explanatory view of the expansion of the contact area and the relative shapes of the substrates 210 and 230.
- the outer peripheral portion of the contact region (that is, the tip portion in the traveling direction of the BW in the cross section) is still located on the central side of the substrates 210 and 230 on the left side, and the outer peripheral portion of the contact region is shown on the right side. It shows a state in which the portion reaches the outer peripheral side of the substrates 210 and 230.
- the upper and lower substrate holders are omitted.
- the area on the outer peripheral side of the substrates 210 and 230 that receives the resistance of air interposed between the substrates is smaller than the area on the center side of the substrates 210 and 230, and the substrate 210 is flat (when viewed in cross section).
- the space between the boards is about to close while maintaining a linear shape.
- the relative shapes of the substrates 210 and 230 in the outer peripheral portion of the contact region in each state are schematically shown. Comparing the two relative shapes, the distance between the substrates 210 and 230 at an arbitrary fixed distance from the contact region toward the outer peripheral side is such that the contact region is on the outer peripheral side rather than the state where the contact region is located on the central side.
- the state of being located is narrower.
- the pressure of a gas such as air interposed between the substrates or a liquid such as water generated by dew condensation tends to increase, and / or remains without being extruded. It becomes a void (also called an air bubble) that can induce peeling of the laminated substrate.
- the outer peripheral portion between the substrates to be bonded has a higher risk of void generation than the central portion.
- the substrates 210 and 230 having a diameter of 300 mm are bonded using a substrate holder having a holding region having a diameter slightly smaller than the diameter (a region in contact with the substrate 230 that maintains the holding during the bonding process), that is, When there is an overhang portion that is not held by the substrate holder on the peripheral edge of the substrate 230, experimental data is obtained in which voids often occur several mm inward from the peripheral edge of the laminated substrate. Even if there is no overhang portion on the peripheral edge of the substrate 230 that is not held by the substrate holder, voids may occur several mm inward from the peripheral edge of the laminated substrate.
- Types of voids generated on the outer peripheral side of the laminated substrate include, for example, step voids and adiabatic expansion voids.
- the step void is a void generated when a gas such as air remains in the non-flat portion in the bonding process because the outer peripheral portion of the bonding surface of the substrates 210 and 230 is not flat.
- the adiabatic expansion void is a gas containing moisture that has moved from the central side to the outer peripheral side of the substrates 210 and 230 in the process of bonding, and adiabatic expansion occurs due to a large pressure change from the outside of the substrates 210 and 230, resulting in rapid expansion. It is a void generated by dew condensation of humidity when the temperature drops. Therefore, the adiabatic expansion void is a void in which the risk of occurrence increases as the BW speed increases or the air pressure between the upper and lower substrates increases.
- FIG. 8A is a schematic plan view of the substrate holder 240 holding the substrates 210 and 230 in the bonding process
- FIG. 8B is a sectional view taken along line XX.
- FIG. 9 is a schematic partially enlarged cross-sectional view for explaining the expansion of the substrate spacing at the BW end positions 214 of the substrates 210 and 230 in the bonding process using the substrate holder 240, and is a schematic partially enlarged cross-sectional view of FIG. 8 (a). ) Is a partially enlarged view of the cross section of the line I-I.
- the outer shape of the substrate holder 240 is schematically drawn by a solid line circle, and the outer shapes of the boards 210 and 230 held by the board holder 240 are schematically drawn by a broken line.
- the substrate holder 240 according to the present embodiment and the substrate 230 held by the substrate holder 240 are drawn with solid lines, and the substrate held by the substrate holder of the comparative example is drawn with broken lines.
- the height of the wall portion 241 of the substrate holder 240 according to the present embodiment and the height of the plurality of support pins 245 adjacent to the wall portion 241 on the central side are formed lower than those of the comparative example. The state of being is indicated by a black arrow.
- the substrate holder 240 has a substantially disk-shaped main body portion 242 made of alumina or the like, and a central support portion 244 and an outer peripheral support portion 246 provided on one surface of the main body portion 242.
- the central support portion 244 supports the central portion, which is a region including the center of the substrate 230.
- the outer peripheral support portion 246 is arranged on the outside of the central support portion 244 and supports the outer peripheral portion on the outer side of the central portion of the substrate 230.
- the outer peripheral portion of the substrate 230 is a region between at least the BW end position 214 of the substrates 210 and 230 and a position separated by a predetermined distance inside the substrate 230, and is a region including a position where voids are generated.
- the outer peripheral support portion 246 supports the outer peripheral portion of the substrate 230 so that at least a part of the outer peripheral portion of the substrate 230 is curved toward the substrate holder 240 with a curvature larger than that of the central portion of the substrate 230.
- the outer peripheral support portion 246 has a support surface in which the height of the substrate holder 240 is gradually lowered from the central side to the peripheral side of the substrate holder 240, and the outer peripheral portion of the substrate 230 is formed by the support surface.
- the envelope surface passing through the tips of the plurality of support pins 245 is the substrate 230.
- the height of the substrate holder 240 means the height of the support surface because it serves as a support surface for supporting.
- the surface of the substrate holder 240 becomes a support surface for supporting the substrate 230, so that the height of the substrate holder 240 is high. Means the height of the support surface.
- an example of a state in which at least a part of the outer peripheral portion of the substrate 230 is curved toward the substrate holder 240 with a curvature larger than that of the central portion of the substrate 230 is an example of a region of the substrate 230 (that is, local).
- the curvature of the curvature is greater than the curvature of the overall (ie, global) curvature of the central portion of the substrate 230. It can be said that the substrate holder 240 supports the outer peripheral portion of the substrate 230 by bending it toward the substrate holder 240 with a curvature larger than the curvature of the central portion of the substrate 230.
- the curvature of the curvature of the central portion differs depending on the region, for example, a representative value such as the average value of those curvatures may be used as the curvature of the central portion, or the curvature of the region having a predetermined size or less is included in the calculation. You may calculate the total curvature without doing so.
- the curvature is set to 0.
- the central support portion 244 has a plurality of support pins 245 arranged in the center of the substrate holder 240.
- the outer peripheral support portion 246 has an annular wall portion 241 that supports the peripheral edge side of the outer peripheral portion of the substrate 230, including at least a part of the above region. That is, a plurality of support pins 245 are arranged inside the annular wall portion 241.
- the plurality of support pins 245 may be formed at equal intervals in the circumferential direction and the radial direction of the substrate holder 240.
- the plurality of support pins 245 may be arranged in a ring band shape in which a plurality of rows are formed in the radial direction, or may be arranged in a staggered manner.
- the central support portion 244 may be the central region of the substrate holder 240 and supports the outer periphery.
- the portion 246 is a region having a curved surface located on the outer peripheral side of the substrate holder 240, a stepped region having a plurality of steps descending outward in the radial direction, a region having a surface having a variable curvature, and the like. There may be.
- three holes 247 into which lift-up pins for pushing the outer peripheral portion of the substrate 230 to be held are inserted are formed at intervals of 120 degrees. As shown in FIG. 8, in the present embodiment, the three holes 247 are located on the same circle as the annular wall portion 241. It is detouring.
- notches 211 and 231 are formed on the outer peripheral portions of the substrates 210 and 230 to indicate the crystal orientation of the substrates 210 and 230.
- FIG. 8 shows a state in which the notches 211 and 231 of the substrates 210 and 230 are aligned with each other.
- an annular step portion 213 formed by trimming is formed on the peripheral edge of the bonded surface of the substrate 210.
- the step portion 213 of the substrate 210 is a region that is not bonded to the substrate 230, and the end portion on the center side of the step portion 213 is the end on the outer peripheral side of the flat bonded surface, which is the position where the BW ends.
- the position where the BW ends, which is the end on the outer peripheral side of the flat bonded surface may be referred to as the BW end position 214.
- the outer peripheral support portion 246 of the substrate holder 240 has an inner region 248 arranged adjacent to the central support portion 244 and an outer region 249 arranged outside the inner region 248.
- the outer peripheral support portion 246 has a support surface in which the height of the substrate holder 240 is gradually lowered from the central side to the peripheral side of the substrate holder 240, and the outer peripheral portion of the substrate 230 is formed by the support surface. Support.
- the rate of change in the height of the support surface of the outer peripheral support portion 246 with respect to the change in the distance from the center of the central support portion 244 is the change rate of the support surface of the central support portion 244 with respect to the change in the distance from the center of the central support portion 244. Greater than the rate of change in height.
- the outer peripheral portion of the substrate 230 is supported so that the outer peripheral portion of the substrate 230 gradually curves toward the substrate holder 240 from the portion supported by the inner region 248 to the portion supported by the outer region 249. To do.
- the outer peripheral portion of the substrate 230 is curved so that the portion of the outer peripheral portion of the substrate 230 supported by the outer region 249 curves toward the substrate holder 240 with a curvature larger than the portion supported by the inner region 248.
- the height of the inner region 248 is lower than the height of the central support portion 244, and the height of the outer region 249 is lower than the height of the inner region 248.
- the rate may be constant.
- the amount of change and the rate of change may be larger in the inner region 248 than in the central support portion 244 and larger in the outer region 249 than in the inner region 248, or may be equal in the inner region 248 and the outer region 249.
- the inner region 248 includes a plurality of support pins 245 whose height of the substrate holder 240 is gradually lowered so that the bonding surface of the substrate 230 is deformed in a convex shape from the central side to the peripheral side of the substrate holder 240. Have.
- the outer peripheral portion of the substrate 230 is supported by a virtual support surface formed by the plurality of support pins 245.
- the outer peripheral support portion 246 has a plurality of support pins 245 whose virtual support surface is a curved surface, and the curved surface causes at least a part of the region toward the substrate holder 240 with respect to the central portion of the substrate 230.
- the outer peripheral portion of the substrate 230 is supported so as to be curved with a large curvature.
- the outer peripheral support portion 246 has a plurality of heights that are gradually lowered toward the outer peripheral side so that the bonded surface of the substrate 230 is deformed upward in a convex shape toward the substrate 210 in FIG.
- the support pin 245 of the above is provided in the inner region 248, and the annular wall portion 241 is provided in the outer region 249.
- the virtual support surface has a shape that always has a curvature like a quadratic curve, and the height thereof is gradually lowered.
- the virtual support surface referred to here refers to the above-mentioned support surface.
- the wall portion 241 is higher than the support pin 245 adjacent to the inside of the wall portion 241. This is because, for example, even if a plurality of support pins 245 and the wall portion 241 are to be polished by a rotating polishing head so that the support surface is flat, the density of the wall portion 241 in the circumferential direction is high in the circumferential direction of the plurality of support pins 245. As a result, the outer wall portion 241 is higher than the inner support pin 245 because it is higher in density than the inner support pin 245.
- the bonding surface of the substrate 230 at the BW end position 214 is significantly larger than that of the comparative example, as shown by the white arrows in FIG. It becomes lower and the distance between the substrate 210 and the substrate 230 becomes wider.
- the substrate holder 240 is arranged outside the central support portion that supports the central portion of the substrate 230, and includes an outer peripheral support portion 246 that supports the outer peripheral portion outside the central portion of the substrate 230.
- the outer peripheral support portion 246 supports the outer peripheral portion of the substrate 230 so that at least a part of the outer peripheral portion of the substrate 230 is curved toward the substrate holder 240 with a curvature larger than that of the central portion of the substrate 230.
- the substrate holder 240 can create a space similar to the wide space between the substrate 210 and the substrate 230 on the central side as shown on the left side of FIG. 7 on the outer peripheral side. That is, the substrate holder 240 maintains the relative shapes of the substrate 210 and the substrate 230 as shown on the left side of FIG. 7 even on the outer peripheral side, or by increasing the distance between the substrate 210 and the substrate 230. , Fluids such as gas and liquid in the space between the substrate 210 and the substrate 230 can be released to the outside. Therefore, the substrate holder 240 can reduce the risk of voids occurring on the outer peripheral side of the laminated substrate 201 to which the substrates 210 and 230 are bonded.
- the substrate holder 240 prevents the pressure increase between the substrate 210 and the substrate 230 by increasing the distance between the substrate 210 and the substrate 230 on the outer peripheral side, and / or the substrate 210 sticks to the substrate 230. It is possible to lengthen the time until. Therefore, the substrate holder 240 can reduce the pressure difference between the pressure between the substrates and the pressure outside the two substrates on the outer peripheral side, and / or reduce the traveling speed of the BW, and can reduce the risk of adiabatic expansion voids. Can be lowered.
- the outer peripheral support portion 246 that supports the outer peripheral portion of the substrate 230 so that at least a part of the outer peripheral portion of the substrate 230 is curved toward the substrate holder 240 with a curvature larger than that of the central portion of the substrate 230.
- the configuration is a deceleration unit that reduces at least one of the progress rate of expansion of the contact region at the outer peripheral portion outside the central portion of the substrate 230 and the moving speed of a fluid, for example, a gas or liquid between the substrate 230 and the substrate 210. It can be said that.
- the configuration also functions as an opening portion that opens the fluid moving between the substrates 230 and the substrate 210 to the outside of the substrate 230 and the substrate 210 by expanding the contact area.
- the difference from the height at the radius of 146 mm to the height at the position of 148 mm is 200 nm to 700 nm from the viewpoint of reducing voids. It has been experimentally found that the range of 500 nm to 2000 nm is preferable as the height at a position with a radius of 146 mm to the height at a position with a radius of about 150 mm, that is, the height of the peripheral edge of the substrate holder 240. ing.
- the board bonding device 100 executes a bonding method including at least the following steps.
- the bonding method is a stage in which the substrate 230 is held by the substrate holder 240, the central portion of the substrate 230 is held by the substrate holder 240, and at least a part of the outer peripheral portion outside the central portion of the substrate 230.
- a step is provided in which the outer peripheral portion of the substrate 230 is held so that the region of is curved toward the substrate holder 240 with a curvature larger than that of the central portion of the substrate 230.
- the bonding method further includes a step of holding the substrate 210 with the substrate holder 220.
- the bonding method further includes a substrate bonding step in which a part of the substrate 230 and a part of the substrate 210 are brought into contact with each other to form a contact region, and then the substrate 230 and the substrate 210 are bonded by expanding the contact area. To be equipped.
- the outer peripheral support portion 246 of the substrate holder 240 does not have to have a plurality of support pins 245 whose height is gradually lowered. That is, the height of the support pin 245 may be constant. Even in this case, the annular wall portion 241 is made lower than the support pin 245.
- the outer peripheral portion of the substrate 230 held by the substrate holder 240 is curved toward the substrate 230 with a plurality of support pins 245 located in the circumferential direction on the outermost peripheral side as fulcrums, and is straight on the inside and outside of the wall portion 241. It may extend in a shape, or may be curved with the wall portion 241 as a fulcrum.
- FIG. 10 is a schematic partially enlarged cross-sectional view of the BW end positions 214 of the substrates 210 and 230 in the bonding process using the substrate holder 250 according to another embodiment.
- the board holder 250 is different from the board holder 240 described with reference to FIGS. 8 and 9, in that the outer peripheral support portion 256 additionally or alternatively has at least a part of the area of the board 230 on the board holder 250. It has a smooth curved surface that supports the outer peripheral portion of the substrate 230 so that it curves smoothly with a curvature larger than that of the central portion of the substrate 230.
- the substrate holder 250 is a vacuum suction type
- the curved surface includes a plurality of ventilation holes and can suck the outer peripheral portion of the substrate 230 by negative pressure.
- the outer peripheral support portion 256 of the substrate holder 250 has a support 202 having a plurality of vents formed in the inner region 258, and the support surface of the substrate 230 in the support 202 , Has the above curved surface.
- the support 202 may be formed of a porous material as an example.
- the height of the support 202 may smoothly vary from the side of the central support portion 254 to the outer peripheral side, from the height of the adjacent support pin 255 to the height of the wall portion 251.
- the support surface of the support 202 may be located on an upwardly convex quadratic curve connecting the support surface of the adjacent support pin 255 and the support surface of the wall portion 251.
- the substrate holder 250 has the same effect as the substrate holder 240 described with reference to FIGS. 8 and 9, and additionally, the bonding surface of the substrate 230 to be held can be curved more smoothly. , May be effective.
- the substrate holder 250 has the wall portion 251 in the outer region 259, but instead of this, the substrate The holder 250 does not have to have the wall portion 251.
- the substrate holder 250 is a vacuum suction type and does not have the wall portion 251 in this way, for example, by adding a non-breathable member that seals the outer peripheral side of the support 202, the substrate 230 can be subjected to negative pressure. Adsorption may be enhanced. The member may or may not come into contact with the substrate 230.
- FIG. 11 is a schematic partially enlarged plan view for explaining the difference between the BW end positions 214 around the notches 211 and 231 and the risk of occurrence of adiabatic expansion voids due to the difference.
- the length of the white arrow indicates the length of time until the end of BW, and the longer the arrow, the longer it takes to end BW.
- the length of time until the end of BW on the most central side of the notches 211 and 231 is indicated by a white arrow (1), and the length of time until the end of BW around the notch is indicated by a white arrow (2). ).
- the BW end position 214 has the same outer shape as the notches 211 and 231 at the center of the notches 211 and 231. Therefore, the distance from the center of the substrates 210 and 230 to the BW end position 214 is the shortest in the center of the notches 211 and 231 as compared with the periphery thereof. Therefore, the BW at the center of the notches 211 and 231 reaches the BW end position 214 earliest, and the peripheral side of the substrate 210 at that position closes in the fastest flat state (straight line when viewed in cross section).
- FIG. 12 is a schematic partially enlarged plan view for explaining the change in the adsorption region around the hole 247 of the substrate holder 240 and the risk of generating adiabatic expansion voids due to the change.
- the region where the substrate holder 240 attracts the substrate 230, that is, the adsorption region is shown by vertical stripes.
- the holes 247 are located in the same circular shape as the annular wall portion 241, and the wall portion 241 bypasses the periphery of the hole 247 toward the center side of the substrate holder 240. ing. Therefore, in the periphery of the hole 247, the suction region changes so as to be smaller toward the center side of the substrate holder 240, and the BW progresses relatively quickly on the center side around the hole 247. However, the relatively slow-growing BW in other regions around the hole 247 slows mouth closure on the central side around the hole 247 and reduces adiabatic expansion voids.
- the BW that has advanced earlier in the center side around the hole 247 is attracted to the substrate 210 side, the final mouth closing operation is accelerated, the progress of the BW is disturbed, and the adiabatic expansion void is generated. Areas of concentration may occur.
- the substrates 210 and 230 to be bonded by expanding the contact area have, for example, the shape of the support surface of the substrate holder 240 being discontinuous, or the substrates 210 and 230.
- such a region has a distance between substrates as compared with other regions, for example, the height of the support pin 245 corresponding to the region is made lower than the height of the support pin 245 corresponding to the other region. That is, it is preferable to bend the substrate 230 held by the substrate holder 240 with a larger curvature toward the substrate holder 240.
- FIG. 13 is a schematic plan view of the substrate holder 260 according to still another embodiment.
- FIG. 14 is a schematic partially enlarged cross-sectional view for explaining the adjustment of the substrate spacing at the BW end positions 214 of the substrates 210 and 230 in the bonding process using the substrate holder 260, and is a schematic partially enlarged cross-sectional view of FIG. It is the figure which partially enlarged the cross section in line II.
- the substrate holder 260 is different from the substrate holder 240 described with reference to FIGS. 8 and 9, in that the outer peripheral support portion 266 additionally or alternatively has an outer peripheral portion of the substrate 230 individually.
- the inner region 268 includes a plurality of adsorption regions capable of adsorbing.
- the outer peripheral support portion 266 of the substrate holder 260 includes the first wall portion 261 in the outer region 269, similarly to the substrate holder 240.
- the substrate holder 260 has an annular first wall portion 261 located on the outermost side and an annular second wall portion 262 located on the central side of the first wall portion 261.
- the annular third wall portion 263 located on the central side of the second wall portion 262 intersects with the first wall portion 261 and the second wall portion 262 and the third wall portion 263 to support the central support portion 264 and the outer periphery.
- a radial separating portion 203 extending linearly in the radial direction is provided over both portions 266.
- the radial separation portion 203 may be a plurality of walls extending at intervals of 45 degrees in the circumferential direction, whereby the outer peripheral support portion 266 of the substrate holder 260 is divided into eight equal parts in the circumferential direction.
- the inner region 268 has a suction region between the first wall portion 261 and the second wall portion 262 and a suction region between the second wall portion 262 and the third wall portion 263, and is centrally supported.
- the portion 264 has a suction region inside the annular third wall portion 263, each of which is divided into eight equal parts in the circumferential direction.
- the outer peripheral support portion 266 of the substrate holder 260 has, for example, a plurality of support pins 265 in the suction region between the second wall portion 262 and the third wall portion 263, but the first wall portion 261 and the first wall portion 261 It does not exist in the adsorption region between the two wall portions 262.
- the plurality of suction regions are located around the hole 267 into which the lift-up pin that pushes the outer peripheral portion of the substrate 230 is inserted.
- the suction regions divided into eight equal parts in the circumferential direction between the first wall portion 261 and the second wall portion 262, three suction regions are formed by the three holes 267. Located around.
- the outer peripheral support portion 266 has the bonding surface of the substrate 230 in the order of the third wall portion 263, the second wall portion 262, and the first wall portion 261 from the central side in FIG.
- the height is gradually lowered so as to be deformed upward toward the substrate 210 in a convex shape.
- the height of the second wall portion 262 is lower than the height of the third wall portion 263, the height of the first wall portion 261 is lower than the height of the second wall portion 262, and the height of the third wall portion 263 is lower.
- the difference between the height of the second wall portion 262 and the height of the second wall portion 262 is less than or equal to the difference between the height of the second wall portion 262 and the height of the first wall portion 261.
- the heights of the plurality of support pins 265 located between the third wall portion 263 and the second wall portion 262 are on the outer peripheral side so that the bonding surface of the substrate 230 is deformed convexly toward the substrate 210. It gradually decreases toward.
- the height of the first wall portion 261 is the case where the substrate 230 is sucked with a relatively large negative pressure in the suction region between the second wall portion 262 and the first wall portion 261.
- the substrate 230 is formed so low that it does not come into contact with the substrate 230 and suction by negative pressure is possible. As described above, since there is no support pin 265 in the region, the substrate 230 does not come into contact with the support pin 265.
- FIG. 14 shows the state of curvature of the substrate 230 before and after the increase to the above-mentioned relatively large negative pressure in the adsorption region, and shows the state of curvature of the substrate 230 after the increase to the negative pressure.
- the curved state of is drawn with a broken line, and the bonding surface of the substrate 230 at the BW end position 214 is lower than before the pressure is increased to the negative pressure, and the distance between the substrate 210 and the substrate 230 is widened. It is indicated by a blank arrow.
- the substrate holder 260 having a plurality of suction regions is used, and the lift-up pin described with reference to regions in which voids are likely to occur in each substrate, for example, FIGS. 11 and 12, is provided.
- the substrate 230 is attracted with a relatively stronger negative pressure than the other regions in the region facing the portion where the notches 211 and 231 are formed and around the hole 267 to be inserted, and the substrate 230 has a relatively large curvature. May be curved.
- the amount of displacement on the bonded surface may be large, but by using the substrate holder 260, only the region where voids are likely to occur is curved with a relatively large curvature. It is possible to suppress the generation of voids and keep the joint misalignment as small as possible.
- the hole 267 into which the lift-up pin is inserted is shown on the left side of FIG. 7, and the free upper substrate 210 that is not held by the substrate holder. The same effect as described above can be obtained by arranging the substrates 210 and 230 on the central side of the substrates 210 and 230, which can maintain a greatly bent state.
- the substrate 230 may be unevenly curved in the in-plane or may be uniformly curved in the entire in-plane. Further, the amount of curvature (degree of curvature) is unique to each substrate 230, or a group of a plurality of substrates 230, for example, a rod in which a plurality of substrates 230 are laminated for storage, or the same manufacturing process. It may be unique to a group that has undergone the process or a group with the same crystal orientation.
- the degree of curvature is unique to each substrate 230, for example, the degree of curvature is measured before or after the substrate is carried into the substrate bonding device 100, and the substrate that holds the substrate 230 is held according to the measurement result.
- the suction force of the holder 260 is adjusted in-plane. For example, when the outer peripheral portion of the substrate 230 is concavely curved in the direction away from the substrate holder 260, the suction force may be further strengthened so that the amount of curvature becomes about the same as other regions in the plane.
- the adsorption force measured and adjusted for the first substrate may be applied to other substrates of the same group.
- information indicating a location where voids are likely to occur is acquired in advance, and for the same type of substrate group, for the substrate group having the same crystal orientation, or for the substrate group that has passed through the same manufacturing process.
- the bending amount in the circumferential direction may be uniformly different.
- a plurality of board holders 240 having different heights of the wall portions 241 are prepared, and the substrate bonding device 100 has the height of the wall portions 241 according to the degree of curvature of the substrate 230.
- the substrate holder 240 having the above may be selected and used for bonding the substrates 210 and 230.
- the height of the wall portion 241 of the substrate holder 240 described with reference to FIG. 8 is set to the region where a relatively large amount of adiabatic expansion voids are generated, for example, around the hole 247 into which the lift pin is inserted.
- the substrates 210 and 230 may be formed lower than the other regions at the locations facing the notches 211 and 231.
- FIG. 15 is a schematic partially enlarged cross-sectional view for explaining the substrate spacing adjustment of the BW end positions 214 of the substrates 210 and 230 in the bonding process using the substrate holder 270.
- the partially enlarged view is a partially enlarged view of the cross section of the substrate holder 270 at the same location as the line II-II shown in FIG.
- the substrate holder 270 according to the present embodiment differs from the substrate holder 260 described with reference to FIGS. 13 and 14, in that the first wall portion 271, the second wall portion 272, and the second wall portion 272 in at least a part of the outer peripheral support portion 276. As shown in FIG. 15, the height of the third wall portion 273 is uniform, and the suction region between the first wall portion 271 and the second wall portion 272 and the second wall portion in the region concerned. No support pin 275 is arranged in any of the suction regions between the 272 and the third wall portion 273.
- the substrate holder 270 according to the present embodiment is located in either the suction region between the first wall portion 271 and the second wall portion 272 and the suction region between the second wall portion 272 and the third wall portion 273.
- the substrate By sucking the substrate 230 with a relatively large negative pressure, the substrate is curved so that at least a part of the outer peripheral portion of the substrate 230 is curved toward the substrate holder 240 with a curvature larger than that of the central portion of the substrate 230. Supports the outer peripheral portion of 230.
- the central support portion 274 of the board holder 270 has a plurality of support pins 275, similarly to the board holder 240 and the like.
- the suction region for sucking the substrate 230 with the relatively large negative pressure described above corresponds to the BW end position 214 based on the wide step portion 213 according to the first example, and corresponds to the second wall portion 272 and the second wall portion 272.
- the curved state of the substrate 230 in the case of the suction region between the three wall portions 273 is drawn with a solid line, and the first wall portion 271 and the first wall portion 271 correspond to the BW end position 214 based on the narrow step portion 213 according to the second example.
- the curved state of the substrate 230 when it is the suction region between the second wall portion 272 is drawn by a broken line.
- the position of the adsorption region for sucking the substrate 230 with the above-mentioned relatively large negative pressure is indicated by a white arrow in the first example and a mesh-like arrow in the second example. ..
- the bonding surface of the substrate 230 at the BW end position 214 in the first example is lower than the bonding surface of the substrate 230 in the second example at the same position, and the substrate 210 and the substrate are at that position.
- a white arrow indicates that the distance from the 230 is widened.
- the bonding surface of the substrate 230 at the BW end position 214 in the second example is lower than the bonding surface of the substrate 230 in the first example at the same position, and the substrate 210 and the substrate 210 are at the same position.
- the state in which the distance from the substrate 230 is widened is indicated by a broken line arrow painted in a mesh pattern.
- the central end of the step portion 213 is on the outer peripheral side of the flat bonding surface. It is the end position, that is, the position where the BW ends, that is, the BW end position 214.
- the position of the BW end position 214 differs depending on the presence or absence of the step portion 213 and the width of the step portion 213. Further, the adiabatic expansion void is likely to occur on the central side of the BW end position 214 by about several millimeters.
- the substrate bonding device 100 uses the substrate holder 270 having a plurality of adsorption regions to apply the negative pressure of the adsorption region at the BW end position 214 according to the width of the step portion 213 of the substrate 210.
- the negative pressure of the adsorption region may be made larger than the negative pressure of the substrate 230, and one region of the substrate 230 facing the adsorption region, that is, one region at the BW end position 214 may be curved with a relatively large curvature.
- the substrate bonding device 100 can widen the space between the substrate 210 and the substrate 230 in the region adjacent to the center side of the BW end position 214, and reduce the risk of voids occurring in the region. Can be done.
- the portion on the central side of the BW end position 214 may be used as a product, and the portion on the outer peripheral side of the BW end position 214 may not be used as a product.
- the risk of voids occurring in the portion of the laminated substrate 201 used as a product can be reduced, so that the yield of the product can be improved.
- the suction region between the first wall portion 261 and the second wall portion 262 is smaller than the suction region between the second wall portion 262 and the third wall portion 263.
- the substrate 230 may or may not be sucked with a negative pressure.
- the heights of the first wall portion 271, the second wall portion 272, and the third wall portion 273 in at least a part of the outer peripheral support portion 276 are shown in FIG. As shown in FIG. 15, it may be uniform, and unlike FIG. 15, it may not be uniform, and may be gradually lowered, for example, outward in the radial direction.
- FIG. 16 is a schematic partially enlarged cross-sectional view of the BW end positions 214 of the substrates 210 and 230 in the bonding process using the other substrate holder 280. No stepped portion is formed on the substrates 210 and 230 in this embodiment.
- the substrate holder 280 is different from the substrate holder 240 described with reference to FIGS. 8 and 9, in that the outer peripheral support portion 286 is additionally or alternatively provided on the peripheral side of the substrate 230 in at least a part of the region. It supports the end on the outer peripheral side of the flat surface, that is, the portion adjacent to the outer peripheral side of the BW end position 214 of the substrate 230 when no step portion is formed on the substrates 210 and 230.
- the BW end position 214 is the bevel 212 and 232 which are the end faces of the peripheral edges of the substrates 210 and 230, and the bevel 212 on the substrates 210 and 230. It is above the boundary line 215 and 235 with other parts except 232.
- the outer peripheral support portion 286 of the substrate holder 280 is outside the annular wall portion 281 in which the inner peripheral edge contacts the bevel 232 of the substrate 230 when the substrate 230 is placed.
- the inner region 288 has a plurality of support pins 285 arranged up to the vicinity of the portion 281. Specifically, among the heights of the plurality of support pins 285 that are gradually lowered, the difference between the lowest height arranged near the wall portion 281 and the highest height arranged on the center side is the said.
- the central support portion 284 of the board holder 280 has a plurality of support pins 285, similarly to the board holder 240 and the like.
- the substrate 230 held by the substrate holder 280 may be unevenly curved in the in-plane or uniformly curved in the entire in-plane.
- the peripheral edge side of the substrate 230 may be curved in a concave shape toward the side of the bonding surface.
- the substrate 230 is located on the outer peripheral side of the wall portion and is a substrate holder.
- the overhang portion of the substrate 230 jumps up to the side of the substrate 210 to be bonded due to the above-mentioned concave warp. As a result, the space between the substrate 210 and the substrate 230 is narrowed on the outer peripheral side, and the risk of voids is increased.
- the wall portion 281 in the outer region 289 of the outer peripheral support portion 286 supports the bevel 232 of the substrate 230, that is, the overhang portion of the substrate 230.
- the substrate holder 280 can reduce the risk of voids occurring on the outer peripheral side of the laminated substrate 201 to which the substrates 210 and 230 are bonded.
- FIG. 17 is a schematic partially enlarged cross-sectional view of the BW end positions 214 of the substrates 210 and 230 in the bonding process using the substrate holder 290, which is a modification of the substrate holder 280 shown in FIG. Similar to the embodiment of FIG. 16, the substrates 210 and 230 in this embodiment do not have a stepped portion.
- the substrate holder 290 differs from the substrate holder 280 described with reference to FIG. 16 in that the outer peripheral support portion 296 of the substrate holder 290 has a large curvature for bending the substrate 230, and the outer peripheral support portion of the substrate holder 280 of FIG. The 286 is small compared to the magnitude of the curvature that bends the substrate 230. More specifically, the difference between the heights of the plurality of support pins 295 included in the central support portion 294 of the substrate holder 290 and the height of the wall portion 291 in the outer region 299 of the outer peripheral support portion 296 is the substrate shown in FIG. It is smaller than the difference between the height of the plurality of support pins 285 included in the central support portion 284 of the holder 280 and the height of the wall portion 281 in the outer region 289 of the outer peripheral support portion 286.
- the lowest height arranged near the wall portion 291 and the highest height arranged on the center side is the lowest height arranged near the wall portion 281 and the height arranged on the center side. Less than the difference from the highest height made.
- the outer peripheral support portion 296 additionally or alternatively, in at least a part of the region, reaches the end of the outer peripheral side of the flat surface on the peripheral side of the substrate 230, that is, the substrates 210 and 230.
- the substrate 230 supports a position on the center side of the BW end position 214 or the BW end position 214 and near the BW end position 214.
- the outer peripheral support portion 296 supports the position of the substrate 230 on the central side of the boundary line 235 or the boundary line 235 and in the vicinity of the boundary line 235 in at least a part of the region.
- the outer peripheral support portion 296 is an annular wall portion 291 in which the inner peripheral side edge contacts the boundary line 235 of the substrate 230 or the vicinity of the center side of the boundary line 235 when the substrate 230 is placed. Is in the outer region 299.
- the inner diameter of the wall portion 291 of the substrate holder 290 may be smaller than the inner diameter of the wall portion 281 of the substrate holder 280.
- the wall portion 291 in the outer region 299 of the outer peripheral support portion 296 supports the boundary line 235 of the substrate 230 or the vicinity of the center side of the boundary line 235, that is, the substrate 230.
- the wall portion 281 such as the outer peripheral support portion 286 is within a range in which the effect of suction and holding of the substrate 230 by the outer peripheral support portion 286 or the like is not lost.
- the substrate 230 is curved toward the substrate holder 240 and the like in at least a part of the outer peripheral portion of the substrate 230 with a curvature larger than that of the central portion of the substrate 230.
- a drive unit that deforms the outer peripheral support portion such as the substrate holder 240 may be provided.
- the deformation of the outer peripheral support portion of the board holder 240 or the like referred to here may be the deformation of the board holder 240 or the like itself, or the deformation of the wall portion 241 or the like of the board holder 240 or the like or a plurality of support pins 245, for example. It may be a variation in height.
- the wall portion 241 or the like of the substrate holder 240 or the like, the plurality of support pins 245, or the like may be a mechanism that can be raised and lowered.
- An example of the above-mentioned drive unit may be a plurality of actuators arranged along the lower surface of the substrate holder 240 or the like in the lower stage 332, and the plurality of actuators may be externally controlled by the control unit 150. It may be driven individually by supplying a working fluid from a pressure source via a pump and a valve. As a result, the plurality of actuators may expand and contract in the thickness direction of the lower stage 332 with different amounts of expansion and contraction to raise or lower a plurality of regions such as the substrate holder 240 held on the lower stage 332. ..
- the substrate bonding device 100 is used to mount the substrate 230 on the lower stage 332 via the substrate holder 240 or the like, or after the mounting, before starting the bonding of the substrates 210 and 230.
- the drive portion may be driven to move the lower stage 332 as described above.
- the substrate bonding device 100 may further include a detection unit that detects that the contact region between the substrate 230 and the substrate 210 has reached a predetermined position.
- the drive unit may deform the outer peripheral support portion such as the substrate holder 240 in response to the detection of the contact region reaching the above position by the detection unit.
- the substrate bonding device 100 further describes, for each of the substrates 210 and 230, the width of trimming formed on the outer peripheral portions of the substrates 210 and 230, the outer circumference of the substrates 210 and 230 that occurs before being held by the substrate holder 240 and the like.
- the acquisition portion may be provided to acquire information on at least one of the direction of the curvature of the portion, the magnitude of the curvature, the position of the notch formed on the outer peripheral portion, the manufacturing process of the substrates 210 and 230, and the material.
- the drive unit may have a different amount of deformation in the outer peripheral support portion of the substrate holder 240 or the like according to the above information acquired by the acquisition unit based on the command of the control unit 150.
- the control unit 150 may be an example of an acquisition unit.
- the substrate bonding device 100 provides information such as the width of trimming, the direction of curvature of the outer peripheral portion, the magnitude of the curvature, and the position of the notch formed on the outer peripheral portion for each of the substrates 210 and 230. , It may be acquired by measuring it by itself, or it may be acquired from the outside.
- the substrate bonding device 100 may include a plurality of substrate holders 240 and the like, and in this case, at least a part of the outer peripheral portion of the substrate 230 curved by the outer peripheral support portion 246.
- the curvature, the width of the at least a portion of the region, and at least one of the positions of the at least a portion of the region may be different for each of the plurality of substrate holders 240 and the like.
- a plurality of board holders 240 may have a region in which the height of a plurality of support pins 245 or the like such as a plurality of board holders 240 or the curvature of a virtual support surface formed by the plurality of support pins 245 or the like is different from other regions.
- the substrate bonding device 100 may include a selection unit that selects one substrate holder 240 or the like from the plurality of substrate holders 240 or the like according to the above information acquired by the acquisition unit. For example, various board holders 240 and the like as described above may be prepared, and a specific board holder 240 and the like may be selected as the selection unit according to the position of the step portion 213.
- the control unit 150 may be an example of a selection unit.
- the board bonding device 100 does not have to include the selection unit. In this case, one of the plurality of board holders 240 and the like is used outside the board bonding device 100 according to the above information. 240 or the like is selected, and information on the selected substrate holder 240 or the like may be provided to the substrate bonding device 100, or the substrate holder 240 or the like itself may be carried in.
- the outer peripheral portion of the substrate 230 is curved with a relatively large curvature, so that the substrates 210 and 230 may be displaced in the bonded surface.
- the substrate holder 240 or the like may have a convex support surface as a whole for the purpose of correcting the deviation caused by the distortion generated when the substrates 210 and 230 are bonded together.
- the substrate bonding device 100 has, for example, past bonding of the same type of substrate as the substrate 230 to be bonded.
- a plurality of predicted values of the amount of deviation are obtained in advance by a method such as acquiring the measured value of the deviation caused in A substrate holder 240 or the like having a support surface having a curvature capable of correcting the deviation amount may be selected from the substrate holder 240 or the like.
- the substrate bonding device 100 does not select the substrate holder 240 or the like, but the substrate holder 240 or the like is externally selected and information on the selected substrate holder 240 or the like is provided.
- the board holder 240 and the like may be carried in.
- the substrate bonding device 100 acquires the predicted value of the deviation amount in advance as described above, and the deviation. Based on the predicted value of the amount, the drive unit may be driven to deform the substrate holder 240 or the like so that the support surface of the substrate holder 240 or the like has a curvature that can correct the deviation amount.
- the substrate bonding device 100 obtains a predicted value of the deviation amount in advance as described above, and the substrate 210.
- the pattern position may be corrected based on the predicted value of the deviation amount. In this case, for example, the pattern position may be adjusted so that the pattern of the circuit region of the substrate 230 is closer to the center side by an amount corresponding to the degree to which the outer peripheral portion can be bent by the substrate holder 240 or the like.
- the amount according to the degree to which the outer peripheral portion can be bent by the substrate holder 240 or the like means that the pattern of the circuit region of the substrate 230 is displaced due to the expansion of the substrate 230 when the outer peripheral portion is bent by the substrate holder 240 or the like. Refers to the quantity.
- the outer peripheral support portion 246 of the substrate holder 240 or the like may include a plurality of support pins 245 or the like having a high density particularly in the above outer region. If the density of the plurality of support pins 245 and the like is low in the outer region, the substrate 230 held by the substrate holder 240 and the like is dented in the region of the low density, and the peripheral side of the substrate 230 jumps up to the bonding surface side due to the reaction. Will end up. According to the substrate holder 240 or the like having the above configuration, it is possible to prevent the board holder 240 or the like from jumping up due to the reaction, thereby reducing the risk of voids occurring on the outer peripheral side.
- the outer peripheral portion of the wiring layer laminated on the surface is CMP (chemical mechanical polishing) after each wiring layer is formed.
- the thickness of the substrate 230 itself may be thinner from the central portion to the outer peripheral portion.
- the fact that the substrate 230 has such a change in thickness may be expressed as the substrate 230 having an outer peripheral sagging, and the difference between the thickness of the central portion and the outer peripheral portion of the substrate 230 may be referred to as the sagging amount. is there.
- the substrate bonding device 100 selects and uses, for example, a substrate holder 240 having a high wall portion 241 so that the amount of bending at the outer peripheral portion is small.
- the height of the wall portion 241 of the substrate holder 240 may be adjusted by an actuator.
- the substrate bonding device 100 can avoid bending the outer peripheral portion of the substrate 230 more than the bending amount required to suppress the generation of voids, and therefore, due to the large bending of the outer peripheral portion of the substrate 230.
- the above-mentioned deviation that may occur can be suppressed.
- the substrate bonding device 100 may acquire information on the amount of sagging of the outer circumference of the substrate 230 by measuring it by itself, or may acquire it from the outside.
- the distance between the substrate 210 and the substrate 230 becomes wider on the outer peripheral side between the substrates 210 and 230.
- the traveling speed of the BW on the outer peripheral side between the substrates 210 and 230 that is, the moving speed of the fluid between the substrates 210 and 230 can be reduced, and / or the fluid between the substrates 210 and 230 can be transferred to the substrate 210. It can be easily opened to the outside of 230. This makes it possible to reduce the possibility of voids occurring on the outer peripheral side between the bonded substrates 210 and 230.
- the substrates 210 and 230 to be bonded by the substrate bonding device 100 may be subjected to specific processing or treatment additionally or alternately.
- FIG. 18 and 19 show a case where the substrate 230 includes a tapered portion 237 as an example of the above-mentioned specific processing.
- FIG. 18 is a partially enlarged view showing a process of mounting the substrate 230 including the tapered portion 237 on the substrate holder 290 shown in FIG.
- the direction in which the substrate 230 is placed on the substrate holder 290 is indicated by a black arrow.
- the same reference numbers will be assigned to the configurations corresponding to the configurations described in the plurality of embodiments shown in FIGS. 1 to 17, and duplicate description will be omitted.
- a tapered portion 237 inclined with respect to the lower surface and the side surface of the substrate 230 is formed on the outer peripheral portion on the lower surface facing the substrate holder 240. Therefore, the thickness of the outer peripheral portion of the substrate 230 is smaller than the thickness of the central portion in the radial direction.
- the tapered portion 237 is continuously formed along the outer circumference of the substrate 230.
- the taper portion 237 may be formed intermittently along the outer circumference of the substrate 230, i.e., the substrate 230 is partially tapered in one or more peripheral portions continuous in the circumferential direction. Part 237 may be included.
- the substrate 230 may include a tapered portion 237 at least on the outer peripheral portion where voids are likely to occur.
- the inclination angle of the tapered portion 237 with respect to the lower surface of the substrate 230 may be constant in the circumferential direction of the substrate 230.
- the tapered portion 237 at the portion where voids are likely to occur has a relatively large inclination angle as compared with the tapered portion 237 at other portions. You may.
- the tapered portion 237 is a curved surface.
- the tapered portion 237 may be a flat surface, a combination of a curved surface and a flat surface, or a plurality of steps formed by the respective ends of the plurality of wiring layers described above. Good.
- FIG. 19 is a schematic partially enlarged cross-sectional view of the BW end positions 214 of the substrates 210 and 230 in the bonding process using the substrate 230 and the substrate holder 290 shown in FIG.
- the substrate 230 held by the substrate holder 290 according to the present embodiment is drawn with a solid line
- the substrate 230 held by the substrate holder 290 shown in FIG. 17 is drawn with a broken line.
- the substrate 210 is not formed with a step portion as in the embodiment of FIG. Further, as shown in FIG. 18, the bonded surface of the substrate 230 in the non-curved state is a flat surface except for the bevel 212. Therefore, the BW end position 214 is on the boundary lines 215 and 235 between the bevels 212 and 232 of the substrates 210 and 230 and the portions of the substrates 210 and 230 other than the bevels 212 and 232.
- the substrate holder 290 has the outer peripheral support portion 296 additionally or alternately on the central side of the BW end position 214 or the BW end position 214 of the substrate 230 in at least a part of the region. It supports a position near the BW end position 214. That is, in the present embodiment, when the substrate 230 is attracted and held by the substrate holder 290, the substrate 230 is forcibly warped so that the outer peripheral portion of the substrate 230 becomes convex toward the substrate 210.
- the BW end position 214 is located at the BW end position 214 as compared with the embodiment shown in FIG. 17, as shown by the white arrows in FIG.
- the bonding surface of the substrate 230 is significantly lowered, and the distance between the substrate 210 and the substrate 230 is widened on the outer peripheral side between the substrates 210 and 230.
- FIG. 20 shows a case where the substrate 210 includes a convex warp film 216 as an example of the above-mentioned specific processing.
- FIG. 20 shows a schematic partial enlargement of the BW end position 214 of the substrates 210 and 230 in the bonding process using the substrate holder 290 shown in FIG. 17 when the substrate 210 includes the step portion 213 and the convex warp film 216. It is a sectional view.
- the substrate 210 bonded by the substrate holder 290 according to the present embodiment is drawn with a solid line
- the substrate 210 bonded by the substrate holder 290 shown in FIG. 17 is drawn with a broken line.
- the convex warp film 216 is formed on the outer peripheral portion on the upper surface facing the substrate holder 220, and the bonding surface faces the facing substrate 230 at the portion where the convex warp film 216 is formed. It is curved in a convex shape.
- the convex warp film 216 may be, for example, a thin film made of a shape memory alloy, or a resin film that shrinks due to curing.
- the convex warp film 216 is continuously formed along the outer circumference on the upper surface of the substrate 210.
- the convex warp film 216 may be formed intermittently along the outer circumference on the upper surface of the substrate 210, i.e., the substrate 210 is partially 1 on the outer peripheral portion continuous in the circumferential direction.
- One or a plurality of convex warp films 216 may be formed on the upper surface.
- the substrate 210 may include the convex warp film 216 at least in the outer peripheral portion where voids are likely to occur.
- the thickness of the convex warp film 216 may be constant in the circumferential direction of the substrate 210. Instead of this, for example, in the outer peripheral portion continuous in the circumferential direction of the substrate 210, the convex warp film 216 at a portion where voids are likely to occur has a relatively large thickness as compared with the convex warp film 216 at other locations. As a result, the substrate 210 may be curved relatively large.
- the convex warp film 216 is formed on the upper surface of the substrate 210 including the step portion 213, when the substrates 210 and 230 are bonded together using the substrate holder 290, the white arrows are shown in FIG. As shown in FIG. 17, the bonding surface of the substrate 210 at the BW end position 214 is higher than that of the embodiment shown in FIG. As a result, the distance between the substrates 210 and the substrate 230 becomes wider on the outer peripheral side between the substrates 210 and 230.
- the substrate 230 also additionally or alternatively has a convex warp film 216. May include. That is, in the substrate 230, the convex warp film 216 may be formed on the outer peripheral portion on the lower surface facing the substrate holder 240, and the bonding surface may be curved convexly at the portion where the convex warp film 216 is formed. The same effect as described above is obtained by the configuration.
- FIG. 21 shows a case where the substrates 210 and 230 include void inflow grooves 218 and 238, respectively, as an example of the above-mentioned specific processing.
- FIG. 21 shows the substrate 210 in the bonding process using the substrate holder 290 shown in FIG. 17, when the substrate 210 includes the step portion 213 and the substrates 210 and 230 include the void inflow grooves 218 and 238, respectively. It is a schematic partially enlarged sectional view of the BW end position 214 of 230.
- the substrates 210 and 230 of the present embodiment have void inflow grooves 218 and 238 formed on the outer peripheral portions of the bonded surfaces, respectively.
- a plurality of void inflow grooves 218 and 238 are formed on the outer peripheral portion of the bonding surface of the substrates 210 and 230 so as to face each other at a position on the center side of the BW end position 214 and near the BW end position 214. There is. Therefore, the bonded surfaces of the substrates 210 and 230 located between the plurality of void inflow grooves 218 and 238 are discretely joined to each other.
- Void inflow grooves 218 and 238 are continuously formed along the outer circumferences of the substrates 210 and 230.
- the void inflow grooves 218 and 238 may be formed intermittently along the outer perimeter of the substrates 210, 230, i.e., the substrates 210, 230 are partially in the circumferentially continuous perimeter. May include one or more void inflow grooves 218 and 238.
- the substrates 210 and 230 may include void inflow grooves 218 and 238 at least in the outer peripheral portion where voids are likely to occur.
- the width and depth of the void inflow grooves 218 and 238 may be constant in the circumferential direction of the substrates 210 and 230. Instead, for example, in the outer peripheral portions of the substrates 210 and 230 that are continuous in the circumferential direction, the void inflow grooves 218 and 238 at locations where voids are likely to occur are relative to the void inflow grooves 218 and 238 at other locations. May have a large width and depth. Further, additionally or alternatively, the void inflow grooves 218 and 238 at the locations where voids are likely to occur may be formed in a relatively large number in the radial direction of the substrates 210 and 230.
- the void inflow grooves 218 and 238 have a square contour in cross section in the radial direction of the substrates 210 and 230.
- the contour of the void inflow groove 218, 238 may be an arc or a free curve, or may be a combination of a straight line and a curved line.
- the voids generated on the outer peripheral side between the substrates 210 and 230 are generated during annealing, for example, as compared with the embodiment shown in FIG. It is possible to reduce the possibility of flowing into the void inflow grooves 218 and 238, that is, being discharged from between the bonded surfaces into the void inflow grooves 218 and 238 and remaining between the bonded surfaces. As a result, it is possible to reduce the possibility that voids are generated on the outer peripheral side between the bonded substrates 210 and 230.
- both the substrate 210 and the substrate 230 have been described as a configuration including the void inflow grooves 218 and 238.
- either the substrate 210 or the substrate 230 may include void inflow grooves 218 and 238.
- the configuration also has the same effect as described above.
- FIG. 22 shows a case where the substrates 210 and 230 include back surface stepped portions 219 and 239, respectively, as an example of the above-mentioned specific processing.
- FIG. 22 shows the substrate 210 in the bonding process using the substrate holder 240 shown in FIG. 9 when the substrate 210 includes the step portion 213 and the substrates 210 and 230 include the back surface step portions 219 and 239, respectively. It is a schematic partially enlarged sectional view of the BW end position 214 of 230.
- the substrate 210 not only has a stepped portion 213 formed on the outer peripheral portion of the bonded surface, but also has a back surface stepped portion 219 formed on the outer peripheral portion on the upper surface facing the substrate holder 220. Therefore, the thickness of the substrate 210 is smaller in the portion where the back surface step portion 219 is formed than in the thickness of the central portion in the radial direction, and the thickness in the portion where both the back surface step portion 219 and the step portion 213 are formed is further increased. small.
- the substrate 230 does not have a stepped portion formed on the bonded surface, a back surface stepped portion 239 is formed on the outer peripheral portion on the lower surface facing the substrate holder 240. Therefore, the thickness of the substrate 230 at the portion where the back surface step portion 239 is formed is smaller than the thickness of the central portion in the radial direction.
- the back surface step portions 219 and 239 are continuously formed along the outer circumferences of the substrates 210 and 230, respectively. Instead, the back surface stepped portions 219 and 239 may be formed intermittently along the outer periphery of the substrates 210 and 230, that is, the substrates 210 and 230 are partially formed on the outer peripheral portion continuous in the circumferential direction. May include one or more backside stepped portions 219 and 239.
- the substrates 210 and 230 may include back surface stepped portions 219 and 239 at least on the outer peripheral portion where voids are likely to occur.
- the depth of the back surface stepped portions 219 and 239 in the thickness direction and the length in the radial direction of each substrate may be constant in the circumferential direction of the substrates 210 and 230.
- the depth and length of the back surface step portion 219 and 239 of the portion where voids are likely to occur are the back surface step portions 219 of other portions. It may be relatively large compared to 239, so that the rigidity of the substrates 210 and 230 may be partially low.
- the back surface step portion 219 and 239 is a one-step step.
- the back surface stepped portions 219 and 239 may have a plurality of steps, a curved surface, a tapered surface, or a combination of a curved surface and a flat surface, as described above. It may be a plurality of steps formed by the respective ends of the plurality of wiring layers.
- the substrates 210 and 230 including the back surface stepped portions 219 and 239 are at the overhang portion on the peripheral edge of the substrate 230 that is not held by the substrate holder 240 when the substrates 210 and 230 are bonded together using the substrate holder 240. , Curved away from each other. This is because the rigidity of the substrates 210 and 230 is low at the location where the back surface step portions 219 and 239 are formed, and the substrates 210 and 230 are spread out by the pressure of the air interposed between the substrates 210 and 230. This is because it is done.
- the substrates 210 and 230 bonded by the substrate holder 240 according to the present embodiment are drawn by solid lines, and the substrates 210 and 230 bonded by the substrate holder 240 according to the embodiment shown in FIG. 9 are drawn by broken lines.
- the BW is compared with the embodiment shown in FIG.
- the bonding surface of the substrate 210 at the end position 214 is high, and the bonding surface of the substrate 230 at the BW end position 214 is low, so that the distance between the substrate 210 and the substrate 230 is increased on the outer peripheral side between the substrates 210 and 230. Become wider.
- the thickness of the portion where the back surface step portion 239 is formed on the outer peripheral portion of the substrate 230 is thick enough to secure the rigidity such that the substrate 230 is not pulled up by the bonding force between the substrates 210 and 230 in progress of BW. Moreover, it is preferable that the substrate 230 is thin enough to be curved by the above-mentioned air pressure.
- the back surface step portions 219 and 239 are formed on the two substrates 210 and 230, respectively, but the back surface step portions may be formed on only one of the two substrates 210 and 230.
- At least one of the substrates 210 and 230 to be bonded may be subjected to plasma irradiation and hydrophilic treatment and then air is blown onto the bonding surface on the outer peripheral portion.
- a treatment for roughening the surface roughness may be performed on the bonded surface on the peripheral edge side of the at least one outer peripheral portion. Since the activity of the portion where these treatments have been performed decreases, the bonding force with the other substrate to be bonded decreases. As a result, the BW traveling speed at the relevant location can be reduced. However, it is preferable to adjust the adhesive strength of the portion after the end of BW so as not to reduce the final bonding strength after annealing.
- At least one of the substrates 210 and 230 to be bonded may be subjected to a treatment of adhering water to the bonding surface on the peripheral edge side of the outer peripheral portion.
- a treatment of adhering water to the bonding surface on the peripheral edge side of the outer peripheral portion As a result, at the location where the treatment is performed, the BW progresses while sandwiching water between the substrates 210 and 230, so that the BW progress speed can be reduced.
- the amount of change or the rate of change in the height position of the tips of the plurality of support pins 245 in the outer peripheral support portion 296 may be equal to the amount of change and the rate of change in the central support portion 244, or The height positions of the tips of the plurality of support pins 245 may be the same for the central support portion 244 and the outer peripheral support portion 296.
- a substrate having a shape in which the bonding surface side is relatively medium-convex in the cross section perpendicular to the bonding surface is displayed on the top. It is preferable to hold the board on the stage 322 side and release it toward another substrate held on the lower stage 332 side. As a result, the space between the substrates during which BW is in progress can be suitably expanded.
- the embodiment in which the substrate 210 held on the upper stage 322 side is released toward the substrate 230 held on the lower stage 332 side has been described, but vice versa. That is, the substrate 230 held on the lower stage 332 side may be released toward the substrate 210 held on the upper stage 322 side.
- the substrate holders 220 and 240 may be supplied with negative pressure from each of the upper stage 322 and the lower stage 332, or may be provided with a pump that supplies the negative pressure by itself.
- the substrate holder 240 or the like has a main body portion 242 whose support surface side has a medium convex shape in a cross section perpendicular to the support surface, and a plurality of support pins 245 and the like are constant. It may have a height. Further, in any of the above embodiments, the substrate holder 240 or the like has a main body portion 242 having a linear shape on the support surface side in a cross section perpendicular to the support surface, and the outer peripheral support portion from the center of the central support portion 244. It may have a plurality of support pins 245 and the like whose height is gradually lowered in the radial direction toward the peripheral edge of the 246.
- 100 board bonding device 110 housing, 120, 130 board cassette, 140 transport section, 150 control section, 210, 230 board, 211, 231 notch, 212, 232 bevel, 213 stepped section, 214 BW end position, 215, 235 Boundary line, 216 Convex warp film, 237 Tapered part, 218, 238 Void inflow groove, 219, 239 Back surface stepped part, 220, 240, 250, 260, 270, 280, 290 Board holder, 241, 251, 281, 291 Wall part, 245, 265, 275, 285, 295 Support pin, 247, 267 holes, 202 support, 261 and 271 1st wall part, 262, 272 2nd wall part, 263, 273 3rd wall part, 203 diameter
- Direction separation part 201 laminated board, 300 bonding part, 310 frame body, 312 bottom plate, 316 top plate, 322 upper stage, 326, 336 activation device, 331 X direction drive part, 332 lower stage,
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- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
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- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Die Bonding (AREA)
Abstract
Description
[特許文献1]特開2015-95649号公報
Claims (18)
- 基板の中央部を支持する中央支持部と、
前記中央支持部の外側に配され、前記基板の外周部を支持する外周支持部と
を備える基板ホルダであって、
前記外周支持部は、前記外周部の少なくとも一部の領域が前記基板ホルダに向かって前記中央部よりも大きい曲率で湾曲するように、前記外周部を支持する
基板ホルダ。 - 前記外周支持部は、前記少なくとも一部の領域を含む、前記外周部の周縁側を支持する環状の壁部を有する、
請求項1に記載の基板ホルダ。 - 前記外周支持部は、前記中央支持部に隣接して配される内側領域と、前記内側領域の外側に配される外側領域とを有し、前記外周部のうち前記外側領域に支持される部分が前記内側領域に支持される部分よりも大きい曲率で前記基板ホルダに向かって湾曲するように、前記外周部を支持する、請求項1または2に記載の基板ホルダ。
- 前記外周支持部は、前記少なくとも一部の領域が前記基板ホルダに向かって前記中央部よりも大きい曲率で湾曲するように、前記外周部を支持する曲面を有する
請求項1から3のいずれか一項に記載の基板ホルダ。 - 前記曲面は、複数の通気孔を含み、負圧によって前記基板の前記外周部を吸着可能である、
請求項4に記載の基板ホルダ。 - 前記外周支持部は、仮想的な支持面が曲面となる複数の支持ピンを有し、前記曲面によって、前記少なくとも一部の領域が前記基板ホルダに向かって前記中央部よりも大きい曲率で湾曲するように、前記外周部を支持する、請求項1から5のいずれか一項に記載の基板ホルダ。
- 前記外周支持部は、それぞれが個別に前記基板の前記外周部を吸着可能である複数の吸着領域を含む、請求項1から6の何れか一項に記載の基板ホルダ。
- 前記複数の吸着領域は、前記基板の前記外周部を押すリフトアップピンが挿入される穴の周囲に位置する、
請求項7に記載の基板ホルダ。 - 基板の中央部を支持する中央支持部と、
前記中央支持部の外側に配され、前記基板の外周部を支持する外周支持部と
を備える基板ホルダであって、
前記中央支持部の中心からの距離の変化に対する前記外周支持部の支持面の高さの変化率は、前記中心からの距離の変化に対する前記中央支持部の支持面の高さの変化率よりも大きい基板ホルダ。 - 基板を保持し、前記基板の一部と他の基板の一部とを接触させて接触領域を形成した後に、前記接触領域の拡大により前記基板および前記他の基板を貼り合わせるための基板ホルダであって、
前記基板の外周部において、前記接触領域の拡大の進行速度、および、前記基板および前記他の基板間の流体の移動速度、の少なくとも一方を小さくする減速部を備える、
基板ホルダ。 - 基板を保持し、前記基板の一部と他の基板の一部とを接触させて接触領域を形成した後に、前記接触領域の拡大により前記基板および前記他の基板を貼り合わせるための基板ホルダであって、
前記接触領域の拡大により前記基板と前記他の基板との間を移動する流体を前記基板および前記他の基板の外側に開放する開放部を備える、
基板ホルダ。 - 請求項1から8のいずれか一項に記載の基板ホルダを用いて、前記基板ホルダに保持された前記基板と他の基板とを貼り合わせる基板貼り合わせ装置。
- 前記基板が前記外周部の少なくとも一部の領域において前記基板ホルダに向かって前記中央部よりも大きい曲率で湾曲するように、前記基板ホルダの前記外周支持部を変形させる駆動部を備える、請求項12に記載の基板貼り合わせ装置。
- 前記基板の一部と前記他の基板の一部とを接触させて接触領域を形成した後に、前記接触領域を拡大させることにより前記基板および前記他の基板を貼り合わせる基板貼り合わせ装置であって、
前記基板と前記他の基板との前記接触領域が予め定められた位置に達したことを検出する検出部を更に備え、
前記駆動部は、前記検出部によって前記接触領域が前記位置に達したことが検出されたことに応じて、前記外周支持部を変形させる、
請求項13に記載の基板貼り合わせ装置。 - 前記基板と、前記他の基板のそれぞれについて、基板の外周部に形成されるトリミングの幅、基板ホルダによって保持される前に生じている前記外周部の湾曲の向き、前記湾曲の大きさ、前記外周部に形成されるノッチの位置、製造プロセスおよび材料の少なくとも何れかの情報を取得する取得部を更に備え、
前記駆動部は、前記取得部が取得した前記情報に応じて、前記基板ホルダの前記外周支持部における変形量を異ならせる、
請求項13または14に記載の基板貼り合わせ装置。 - 複数の前記基板ホルダを備え、
前記外周支持部が湾曲させる前記少なくとも一部の領域の曲率、前記少なくとも一部の領域の幅、および、前記少なくとも一部の領域の位置の少なくとも一つが、前記複数の基板ホルダのそれぞれで異なる請求項12から15のいずれか一項に記載の基板貼り合わせ装置。 - 請求項9から11のいずれか一項に記載の基板ホルダを用いて、前記基板ホルダに保持された前記基板と他の基板とを貼り合わせる基板貼り合わせ装置。
- 基板ホルダで基板を保持する段階であって、前記基板ホルダによって、前記基板の中央部を保持し、且つ、前記基板の外周部の少なくとも一部の領域が前記基板ホルダに向かって前記中央部よりも大きい曲率で湾曲するように前記外周部を保持する段階と、
他の基板ホルダで他の基板を保持する段階と、
前記基板の一部と前記他の基板の一部とを接触させて接触領域を形成した後に、前記接触領域を拡大させることにより前記基板および前記他の基板を貼り合わせる基板貼り合わせ段階と
を備える基板貼り合わせ方法。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022125343A1 (en) * | 2020-12-11 | 2022-06-16 | Kla Corporation | System and method for determining post bonding overlay |
WO2023009350A1 (en) * | 2021-07-28 | 2023-02-02 | Kla Corporation | System and method for mitigating overlay distortion patterns caused by a wafer bonding tool |
WO2023009563A1 (en) * | 2021-07-28 | 2023-02-02 | Kla Corporation | System and method for optimizing through silicon via overlay |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220319897A1 (en) * | 2021-03-30 | 2022-10-06 | Ngk Spark Plug Co., Ltd. | Electrode-embedded member, substrate holding member, ceramic heater, and electrostatic chuck |
CN116387227B (zh) * | 2023-06-01 | 2023-08-11 | 苏州赛肯智能科技有限公司 | 四边定位抓取机构 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0494735U (ja) * | 1991-01-14 | 1992-08-17 | ||
JP2008172159A (ja) * | 2007-01-15 | 2008-07-24 | Nitto Denko Corp | 粘着テープ貼付け方法およびこれを用いた粘着テープ貼付け装置 |
JP2009064827A (ja) * | 2007-09-04 | 2009-03-26 | Sumco Corp | 貼り合わせウェーハの製造装置及び製造方法 |
JP2012222284A (ja) * | 2011-04-13 | 2012-11-12 | Ibiden Co Ltd | エピタキシャル成長用サセプタ、これを用いたエピタキシャル成長装置およびこれを用いたエピタキシャル成長方法 |
WO2017217431A1 (ja) * | 2016-06-16 | 2017-12-21 | 株式会社ニコン | 積層装置および積層方法 |
JP2018026573A (ja) * | 2017-09-26 | 2018-02-15 | エーファウ・グループ・エー・タルナー・ゲーエムベーハー | 基板をボンディングする装置および方法 |
JP2018026414A (ja) * | 2016-08-09 | 2018-02-15 | 東京エレクトロン株式会社 | 接合装置および接合システム |
US20180090348A1 (en) * | 2014-01-24 | 2018-03-29 | Taiwan Semiconductor Manufacturing Company, Ltd. | Wafer Processing Method and Apparatus |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0766093A (ja) * | 1993-08-23 | 1995-03-10 | Sumitomo Sitix Corp | 半導体ウエーハの貼り合わせ方法およびその装置 |
JPH1174164A (ja) * | 1997-08-27 | 1999-03-16 | Canon Inc | 基板処理装置、基板支持装置及び基板処理方法並びに基板の製造方法 |
JP4080401B2 (ja) * | 2003-09-05 | 2008-04-23 | 大日本スクリーン製造株式会社 | 基板処理装置および基板処理方法 |
JP2007214227A (ja) * | 2006-02-08 | 2007-08-23 | Matsushita Electric Ind Co Ltd | 基板保持装置、基板保持方法、並びに該装置及び方法を利用する部品実装装置、部品実装方法 |
JP2008103703A (ja) * | 2006-09-20 | 2008-05-01 | Canon Inc | 基板保持装置、該基板保持装置を備える露光装置、およびデバイス製造方法 |
JP2009032915A (ja) * | 2007-07-27 | 2009-02-12 | Dainippon Screen Mfg Co Ltd | 基板保持装置 |
JP6177739B2 (ja) * | 2014-08-07 | 2017-08-09 | 東京エレクトロン株式会社 | 接合装置、接合システム、接合方法、プログラム及びコンピュータ記憶媒体 |
CN105374709B (zh) * | 2014-08-07 | 2019-05-03 | 东京毅力科创株式会社 | 接合装置、接合系统以及接合方法 |
JP6015836B2 (ja) * | 2015-10-05 | 2016-10-26 | 大日本印刷株式会社 | 基板の基板保持用枠体への受け渡し方法と移載用架台への受け取り方法、および移載用架台 |
KR102507283B1 (ko) * | 2015-12-22 | 2023-03-07 | 삼성전자주식회사 | 기판 척 및 이를 포함하는 기판 접합 시스템 |
CN107086275B (zh) * | 2017-05-12 | 2018-10-23 | 京东方科技集团股份有限公司 | 基板对盒装置及对盒方法 |
-
2020
- 2020-04-30 TW TW109114450A patent/TWI822993B/zh active
- 2020-05-07 WO PCT/JP2020/018522 patent/WO2020226152A1/ja active Application Filing
- 2020-05-07 KR KR1020217036322A patent/KR20210144892A/ko not_active Application Discontinuation
- 2020-05-07 JP JP2021518393A patent/JP7276434B2/ja active Active
- 2020-05-07 CN CN202080033276.3A patent/CN113795907B/zh active Active
-
2021
- 2021-11-05 US US17/453,734 patent/US20220084870A1/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0494735U (ja) * | 1991-01-14 | 1992-08-17 | ||
JP2008172159A (ja) * | 2007-01-15 | 2008-07-24 | Nitto Denko Corp | 粘着テープ貼付け方法およびこれを用いた粘着テープ貼付け装置 |
JP2009064827A (ja) * | 2007-09-04 | 2009-03-26 | Sumco Corp | 貼り合わせウェーハの製造装置及び製造方法 |
JP2012222284A (ja) * | 2011-04-13 | 2012-11-12 | Ibiden Co Ltd | エピタキシャル成長用サセプタ、これを用いたエピタキシャル成長装置およびこれを用いたエピタキシャル成長方法 |
US20180090348A1 (en) * | 2014-01-24 | 2018-03-29 | Taiwan Semiconductor Manufacturing Company, Ltd. | Wafer Processing Method and Apparatus |
WO2017217431A1 (ja) * | 2016-06-16 | 2017-12-21 | 株式会社ニコン | 積層装置および積層方法 |
JP2018026414A (ja) * | 2016-08-09 | 2018-02-15 | 東京エレクトロン株式会社 | 接合装置および接合システム |
JP2018026573A (ja) * | 2017-09-26 | 2018-02-15 | エーファウ・グループ・エー・タルナー・ゲーエムベーハー | 基板をボンディングする装置および方法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022125343A1 (en) * | 2020-12-11 | 2022-06-16 | Kla Corporation | System and method for determining post bonding overlay |
US11829077B2 (en) | 2020-12-11 | 2023-11-28 | Kla Corporation | System and method for determining post bonding overlay |
WO2023009350A1 (en) * | 2021-07-28 | 2023-02-02 | Kla Corporation | System and method for mitigating overlay distortion patterns caused by a wafer bonding tool |
WO2023009563A1 (en) * | 2021-07-28 | 2023-02-02 | Kla Corporation | System and method for optimizing through silicon via overlay |
US11782411B2 (en) | 2021-07-28 | 2023-10-10 | Kla Corporation | System and method for mitigating overlay distortion patterns caused by a wafer bonding tool |
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