WO2021235269A1 - ボンディング装置及びボンディングヘッド調整方法 - Google Patents
ボンディング装置及びボンディングヘッド調整方法 Download PDFInfo
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- WO2021235269A1 WO2021235269A1 PCT/JP2021/017854 JP2021017854W WO2021235269A1 WO 2021235269 A1 WO2021235269 A1 WO 2021235269A1 JP 2021017854 W JP2021017854 W JP 2021017854W WO 2021235269 A1 WO2021235269 A1 WO 2021235269A1
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- 229920001187 thermosetting polymer Polymers 0.000 description 2
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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
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
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- H01L21/67005—Apparatus not specifically provided for elsewhere
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Definitions
- the present invention relates to a bonding apparatus and a bonding head adjusting method.
- Patent Document 1 discloses a flip chip mounting method.
- the mounting method of Patent Document 1 is used when mounting a semiconductor chip on a circuit board.
- a suction tool is used to handle the semiconductor chip.
- the semiconductor chip placed on the support is picked up using the suction tool.
- the suction tool moves to the bonding stage on which the circuit board is mounted while holding the semiconductor chip.
- the suction tool moves so that the semiconductor chip is placed at a desired position on the circuit board.
- the attitude of the semiconductor chip with respect to the circuit board is also important.
- the attitude of the semiconductor chip with respect to the circuit board means the inclination of the semiconductor chip with respect to the surface of the circuit board on which the semiconductor chip is mounted.
- the semiconductor chip may be required to arrange the junction surface of the semiconductor chip facing the circuit board so as to be parallel to the mounting surface of the circuit board. If the semiconductor chip is tilted with respect to the mounting surface, the semiconductor chip causes mounting defects. For example, a defective electrical connection may occur between the bump electrode of the semiconductor chip and the electrode pad of the circuit board. When the inclination of the semiconductor chip with respect to the mounting surface is large, a part of the semiconductor chip may come into contact with the circuit board. If a part of the semiconductor chip comes into contact with the circuit board, the semiconductor chip may be physically damaged. If a mounting defect occurs, the yield in the die bonding work will decrease.
- the present invention provides a bonding apparatus and a bonding head adjusting method capable of improving the yield of die bonding work.
- the bonding apparatus has a stage having a mounting surface on which a substrate is mounted, a chip holding surface for sucking and holding chip components, and an adjusting means for adjusting the inclination of the chip holding surface.
- the bonding head for arranging the chip components with respect to the substrate mounted on the stage, the information holding unit for holding the tilt information of the stage associated with the position on the mounting surface and the tilt at the position, and the chip holding surface It is provided with a copying jig having a copying surface to be pressed and capable of changing the inclination of the copying surface so that the inclination of the chip holding surface corresponds to the inclination shown in the inclination information.
- the information holding unit has the tilt information of the stage even when the substrate is placed on the stage.
- the inclination of the bonding head can be adjusted according to the inclination of the place where the chip component is arranged. Therefore, the yield of die bonding work can be improved.
- the copying jig may include a copying surface and may have a passive inclined portion in which the copying surface is passively tilted by a force received from the copying surface.
- One form of the bonding device acquires tilt information from the information holding unit, and controls the force applied to the copying surface by the chip holding surface based on the tilt at the position when the chip holding surface is pressed against the copying surface. Further units may be provided. According to this configuration, the configuration of the copying jig can be simplified.
- the passive inclined portion may include a plate member including a copying surface and an elastically deformed portion provided on a surface of the plate member opposite to the copying surface.
- the elastically deformed portion may be made of a resin material. This configuration also simplifies the configuration of the copying jig.
- the passive inclined portion may include a plate member including a copying surface and an elastically deformed portion provided on a surface of the plate member opposite to the copying surface.
- the elastically deformed portion may be a metal spring.
- the copying jig may include a copying surface and may have an active inclined portion in which the copying surface is actively tilted regardless of the force received from the copying surface.
- the active inclined portion may have a plate member including a copying surface and a plate member driving unit provided on the surface of the plate member opposite to the copying surface to actively control the inclination of the plate member. ..
- the plate member driving unit may incline the plate member so that the inclination of the copying surface corresponds to the inclination indicated by the inclination information provided by the information holding unit. According to this configuration, the copying surface can be reliably tilted as indicated by the tilt information.
- Another embodiment of the present invention is a chip holding that attracts and holds a chip component of a bonding head that arranges a chip component with respect to a substrate mounted on a mounting surface of a stage having a mounting surface on which the substrate is mounted.
- This is a bonding head adjustment method that adjusts the inclination of the surface.
- the bonding head adjustment method is associated with the first step of obtaining tilt information relating the position on the mounting surface and the tilt at the position, and the position on the mounting surface corresponding to the position of the substrate on which the chip component is placed. It has a second step of adjusting the inclination of the chip holding surface based on the inclination information.
- the information holding unit has the inclination information of the main surface of the stage even when the substrate is placed on the stage.
- the inclination of the bonding head can be adjusted according to the inclination of the place where the chip component is arranged. Therefore, the yield of die bonding work can be improved.
- the inclination of the chip holding surface may be adjusted by using a copying jig that passively inclines the copying surface in response to the pressing of the chip holding surface. Also by this method, the inclination of the bonding head can be adjusted according to the inclination of the place where the chip component is arranged.
- the inclination of the chip holding surface may be adjusted by using a copying jig that actively causes the inclination of the copying surface regardless of pressing the chip holding surface. Also by this method, the inclination of the bonding head can be adjusted according to the inclination of the place where the chip component is arranged.
- a bonding apparatus and a bonding head adjusting method capable of improving the yield of die bonding work.
- FIG. 1 is a schematic view showing a state of a bonding operation to which a bonding device and a bonding head adjusting method are applied.
- FIG. 2 is a diagram showing a configuration of a bonding device.
- FIG. 3A is a diagram showing the relationship between the position and the inclination of the elastically deformed portion.
- FIG. 3B is a diagram showing the relationship between the load and the inclination of the elastically deformed portion.
- FIG. 3C is a diagram showing the relationship between the rigidity and the inclination in the elastically deformed portion.
- FIG. 4A is a diagram showing one step of the bonding operation.
- FIG. 4B is a diagram showing a process following FIG. 4A in the bonding operation.
- FIG. 4 (c) is a diagram showing a process following FIG. 4 (b) in the bonding operation.
- FIG. 5A is a diagram showing a process in the bonding head adjustment work.
- FIG. 5B is a diagram showing a step following FIG. 5A in the bonding head adjustment work.
- FIG. 6A is a diagram showing a process following FIG. 5B in the bonding head adjusting work.
- FIG. 6B is a diagram showing a step following FIG. 6A in the bonding head adjusting work.
- FIG. 7A is a diagram showing one step of the bonding work following the bonding head adjustment work.
- FIG. 7B is a diagram showing a process following FIG. 7A in the bonding operation.
- FIG. 8A is a diagram showing a process following FIG. 7B in the bonding operation.
- FIG. 8B is a diagram showing a process following FIG. 8A in the bonding operation.
- FIG. 9 is a diagram showing the configuration of the bonding apparatus of the first modification.
- FIG. 10 is a diagram showing the configuration of the bonding apparatus of the modification 2.
- FIG. 11A is a diagram showing a process in the bonding head adjustment work.
- FIG. 11B is a diagram showing a step following FIG. 11A in the bonding head adjusting work.
- FIG. 12 (a) is a diagram showing a process following FIG. 11 (b) in the bonding head adjusting work.
- FIG. 12B is a diagram showing a step following FIG. 12A in the bonding head adjusting work.
- the bonding device 1 joins the chip component 202 to the substrate 201.
- This joining includes the meaning of mechanical joining and electrical joining.
- the chip component 202 is, for example, a semiconductor chip obtained by disassembling a semiconductor wafer.
- the chip component 202 may be another packaged electronic component or the like.
- a plurality of chip components 202 are mounted on the chip stage 203.
- the substrate 201 is, for example, a circuit board on which a wiring pattern and an electrode pad are formed.
- the substrate 201 is mounted on the substrate stage 204.
- the bump electrode included in the chip component 202 is joined to the electrode pad of the substrate 201.
- the bonding head 200 of the bonding device 1 moves on the chip stage 203.
- the bonding head 200 descends so as to approach the chip stage 203. Subsequently, the bonding head 200 holds the chip component 202. Subsequently, the bonding head 200 holding the chip component 202 moves onto the substrate 201. Subsequently, the bonding head 200 mounts the chip component 202 at a predetermined position on the substrate 201. Then, the bonding head 200 performs the processing necessary for bonding the chip component 202 to the substrate 201. For example, the bonding head 200 applies heat to the chip component 202 in order to thermoset the adhesive required for mechanical bonding.
- the attitude of the chip component 202 with respect to the substrate 201 is important.
- the posture of the chip component 202 with respect to the substrate 201 is, for example, the inclination of the chip bonding surface 202a of the chip component 202 with respect to the mounting surface 201a of the substrate 201 on which the chip component 202 is mounted.
- the chip junction surface 202a is parallel to the mounting surface 201a.
- the bonding head 200 of the bonding device 1 may press the chip component 202 toward the substrate 201.
- the chip joint surface 202a is parallel to the mounting surface 201a, the distribution of the pressing force is not biased.
- the chip bonding surface 202a When the chip bonding surface 202a is parallel to the mounting surface 201a, heat can be uniformly applied to the adhesive arranged between the chip component 202 and the substrate 201.
- the chip joint surface 202a When the chip joint surface 202a is tilted with respect to the mounting surface 201a, the distribution of pressing force and the distribution of heat may be biased.
- the chip bonding surface 202a is extremely tilted with respect to the mounting surface 201a, a part of the chip component 202 may come into contact with the substrate 201.
- the bonding apparatus and the bonding head adjusting method of the present embodiment satisfactorily set the posture of the chip component 202 with respect to the substrate 201.
- the bonding device 1 will be briefly described.
- the bonding device 1 has a bonding head 200, a substrate stage 204 (stage), an adjustment controller 20 (information holding unit), and a copying jig 10 as main components.
- the bonding head 200 has a chip holding portion 101 and an inclination adjusting mechanism 102 (adjusting means).
- the chip holding portion 101 has a chip holding surface 101a.
- the chip holding portion 101 detachably holds the chip component 202 on the chip holding surface 101a.
- a vacuum suction mechanism or the like may be used to hold the chip component 202.
- the chip holding portion 101 is attached to the tilt adjusting mechanism 102.
- the tilt adjusting mechanism 102 changes the tilt of the tip holding portion 101 with respect to the reference axis.
- the tilt adjusting mechanism 102 maintains the tilt of the tip holding portion 101.
- the tilt adjusting mechanism 102 includes a spherical pneumatic bearing.
- the tilt adjusting mechanism 102 can freely tilt the movable portion 102a constituting the bearing.
- the tilt adjusting mechanism 102 can set the tip holding portion 101 to an arbitrary tilt.
- the position of the movable portion 102a is held, for example, by vacuum suction.
- the tilt adjusting mechanism 102 is attached to the actuator 103.
- the actuator 103 moves the tilt adjusting mechanism 102 and the tip holding portion 101 in the triaxial direction.
- the direction toward or away from the substrate 201 or the like is defined as the Z direction.
- the direction orthogonal to the Z direction is defined as the X direction.
- the actuator 103 operates based on the control signal ⁇ 1 provided by the main controller 104 (control unit).
- the copying jig 10 when the tip holding portion 101 is pressed against the copying jig 10, the copying jig 10 is deformed according to the pressing force. This deformation causes the copying jig 10 to tilt.
- the inclination can be controlled by the deviation D and the magnitude of the pressing force F.
- the deviation D is the distance from the jig reference axis A1 of the copying jig 10 to the stage reference axis A2 of the tilt adjusting mechanism 102.
- the copying jig 10 can generate an arbitrary inclination. Therefore, by making the tip holding portion 101 imitate this inclination, the tip holding portion 101 can be adjusted to an arbitrary inclination.
- the copying and the holding of the tilt are realized by the tilt adjusting mechanism 102.
- the copying jig 10 has a passive inclined portion 11 and a base 12.
- the passive inclined portion 11 has a plate member 13 and an elastically deformed portion 14.
- the plate member 13 is a flat plate.
- the plate member 13 has a rigidity that does not cause significant deformation due to the pressing of the chip holding portion 101.
- the plate member 13 has a copying surface 13a.
- the chip holding surface 101a is pressed against the copying surface 13a.
- the size of the copying surface 13a may be larger than that of the chip holding surface 101a.
- the elastically deformed portion 14 is sandwiched between the plate member 13 and the base 12.
- the elastic deformation portion 14 causes significant deformation with respect to the pressing force F.
- the rigidity of the elastically deformed portion 14 is lower than the rigidity of the plate member 13.
- the rigidity here is a degree indicating the ease of deformation.
- the rigidity referred to here can also be rephrased as an elastic modulus or Young's modulus.
- the elastically deformed portion 14 is a block made of rubber or resin.
- fluororubber or silicone rubber can be used for the elastically deformed portion 14, for example, fluororubber or silicone rubber can be used.
- the elastic deformation portion 14 is not limited to this, and any elastic body can be used.
- the elastically deformed portion 14 may be one or more metal springs. From the viewpoint of generating a significant inclination, the thickness of the elastically deformed portion 14 is larger than the thickness of the plate member 13. It can be said that the jig reference shaft A1 is a neutral shaft of the elastically deformed portion 14.
- the elastically deformed portion 14 contracts in the Z direction without causing inclination. It can be said that the axis of the pressing force F is the stage reference axis A2.
- the elastically deformed portion 14 contracts in the Z direction. However, the amount of shrinkage varies from place to place. Therefore, the plate member 13 arranged on the elastically deformed portion 14 is tilted.
- the characteristics of the elastically deformed portion 14 can be exemplified by the graph G1 of FIG. 3 (a) and the graph G2 of FIG. 3 (b).
- the horizontal axis of FIG. 3A indicates a position.
- the vertical axis of FIG. 3B shows the slope.
- the position on the horizontal axis is the position (deviation D) of the stage reference axis A2 with respect to the jig reference axis A1.
- the position of zero means that the stage reference axis A2 overlaps with the jig reference axis A1.
- the horizontal axis in FIG. 3 (b) indicates the weight.
- the vertical axis of FIG. 3B shows the slope. The greater the load, the greater the slope. In the graph G3, the case where the relationship between the weight and the slope is proportional is illustrated.
- the elastic deformation portion 14 is not limited to a configuration in which its rigidity is constant. As shown in the graph G3 of FIG. 3C, the rigidity of the elastically deformed portion 14 may be variable. In this case, it is possible to generate an arbitrary inclination by controlling the rigidity of the elastically deformed portion 14 while keeping the pressing force constant.
- the adjustment controller 20 provides a control signal ⁇ 2 to the main controller 104 so as to be in a pressing mode in which a desired tilt occurs.
- the adjustment controller 20 holds information in which the position where the chip component 202 is arranged on the stage main surface 204a (mounting surface), which will be described later, and the inclination of the stage main surface 204a at that position are linked to each other. ..
- the adjustment controller 20 receives the position information of the chip component 202 to be arranged next from the main controller 104.
- the adjustment controller 20 calls the tilt information corresponding to the received position information. Subsequently, the adjustment controller 20 sets the tilt target of the chip holding unit 101 based on the called tilt information.
- the adjustment controller 20 calculates the deviation D of the stage reference axis A2 with respect to the jig reference axis A1 based on the characteristics of the elastic deformation portion 14 shown in FIGS. 3A and 3B.
- the deviation D is converted into the positions of the chip holding portion 101 in the X direction and the Y direction.
- the adjustment controller 20 calculates the force with which the tip holding portion 101 presses the copying jig 10.
- the force with which the chip holding portion 101 presses the copying jig 10 is converted into the position of the chip holding portion 101 in the Z direction.
- the adjustment controller 20 outputs a control signal ⁇ 1 to the main controller 104 so as to move the chip holding unit 101 to each of the calculated X-direction, Y-direction, and Z-direction positions.
- the substrate stage 204 (S1: FIG. 4A).
- the substrate 201 is placed on the stage main surface 204a in a later step.
- the positional relationship between the mounted substrate 201 and the stage main surface 204a is known in advance. Specifically, the correspondence between the position on the substrate 201 on which the chip component 202 is arranged and the position of the stage main surface 204a corresponding to the position on which the chip component 202 is arranged has been clarified. In the example shown in FIG. 4A, three corresponding regions R1, R2, and R3 are illustrated.
- the stage main surface 204a is orthogonal to the Z direction, as indicated by the alternate long and short dash line. However, in reality, the stage main surface 204a may be tilted as shown by the solid line.
- the work of obtaining this inclination may use a desired measuring device 206 capable of measuring the inclination of the surface.
- the measuring device 206 measures the inclination for each measurement position (each corresponding region R1, R2, R3) on the stage main surface 204a.
- the measuring device 206 associates the position information with the tilt information and outputs the information to the adjustment controller 20.
- the substrate 201 is placed on the stage main surface 204a (S3: FIG. 4C).
- the steps after step S3 the inclination of the stage main surface 204a cannot be directly measured.
- the bonding apparatus 1 of the embodiment already holds the tilt information corresponding to the region where the chip component 202 is arranged in the adjustment controller 20. Therefore, even when the substrate 201 is placed on the stage main surface 204a, it is possible to know the inclination corresponding to the region where the chip component 202 is arranged.
- the adjustment controller 20 reads out the tilt information corresponding to the position where the chip component 202 is arranged. Then, the position (deviation D) of the stage reference axis A2 with respect to the jig reference axis A1 and the pressing force F are calculated by using the read inclination information and the characteristic information of the elastic deformation portion 14. Based on the calculated deviation D and the pressing force F, the adjustment controller 20 outputs a control signal indicating the target position of the chip holding unit 101 to the main controller 104. Upon receiving the control signal, the main controller 104 outputs the control signal ⁇ 1 to the actuator so that the position in the X direction and the position in the Y direction become the target positions (S4a: see FIG. 5A).
- the main controller 104 gives a control signal ⁇ 1 to unlock the tilt adjusting mechanism 102 (S4b: see FIG. 5B).
- the adjustment controller 20 outputs a control signal ⁇ 2 to the main controller 104 so that the position of the chip holding portion 101 in the Z direction becomes the target position.
- the chip holding surface 101a of the chip holding portion 101 is pressed against the copying surface 13a. Since the elastically deformed portion 14 is deformed unevenly, the plate member 13 is tilted.
- the movable portion 102a of the tilt adjusting mechanism 102 that holds the chip holding portion 101 is tilted according to the tilt of the plate member 13 (S4c: see FIG. 6A).
- the plate member 13 of the copying jig 10 is tilted due to the pressing force F. Tilt of the copying jig 10 does not occur without pressing the tip holding portion 101.
- the tilting of the copying jig 10 by pressing the chip holding portion 101 is referred to as the tilting of the copying jig 10 is passively generated.
- the main controller 104 gives a control signal ⁇ 1.
- the movable portion 102a of the tilt adjusting mechanism 102 is locked (S4d: see FIG. 6B). Therefore, the inclination of the tip holding portion 101 is maintained.
- the chip component 202 is held (S5: FIG. 7A).
- the main controller 104 gives a control signal ⁇ 1 to the actuator 103.
- the bonding head 200 moves above the chip component 202.
- the main controller 104 moves the bonding head 200 downward along the Z direction.
- the main controller 104 causes the bonding head 200 to hold the chip component 202.
- the main controller 104 moves the bonding head 200 holding the chip component 202 upward along the Z direction.
- the chip component 202 is moved to the substrate 201 (S6: FIG. 7 (b)).
- the main controller 104 gives a control signal ⁇ 1 to the actuator 103.
- the bonding head 200 moves above the region of the substrate 201 where the chip component 202 is arranged.
- the chip component 202 is mounted on the substrate 201 (S7: FIG. 8A).
- the main controller 104 gives a control signal ⁇ 1 to the actuator 103.
- the bonding head 200 moves downward in the Z direction toward the substrate 201.
- the chip holding surface 101a of the chip holding portion 101 is parallel to the mounting surface 201a of the substrate 201.
- the chip joining surface of the chip component 202 held by the chip holding surface 101a 202a is also parallel to the mounting surface 201a of the substrate 201.
- the bonding head 200 performs a desired process required for bonding, such as heating for thermosetting the adhesive.
- the bonding head 200 is separated from the chip component 202 (S8: FIG. 8B).
- the main controller 104 gives a control signal ⁇ 1 to the bonding head 200.
- the main controller 104 gives a control signal ⁇ 1 to the actuator 103.
- the bonding head 200 moves upward in the Z direction toward the substrate 201.
- the adjusting controller 20 has tilt information of the stage main surface 204a even when the substrate 201 is placed on the substrate stage 204. As a result, the inclination of the chip holding portion 101 can be adjusted according to the inclination of the place where the chip component 202 is arranged. Therefore, the yield of die bonding work can be improved.
- the bonding apparatus of the present invention is not limited to the above aspect.
- the elastically deformed portion is not limited to the configuration in which its rigidity is constant. As shown in the graph G3 of FIG. 3C, the rigidity of the elastically deformed portion may be variable.
- FIG. 9 is an example of a bonding device 1A capable of controlling the rigidity of the elastically deformed portion 14A to an arbitrary rigidity.
- the bonding device 1A includes a copying jig 10A.
- the copying jig 10A has a passive inclined portion 11A.
- the elastically deformed portion 14A of the passive inclined portion 11A included in the copying jig 10A includes a variable rigidity portion 14s capable of controlling the rigidity (elastic modulus, Young's modulus).
- the variable rigidity portion 14s can be controlled based on the control signal ⁇ 2 output by the adjusting controller 20 by adjusting the rigidity by, for example, hydraulic pressure, water pressure, or air pressure.
- the inclination of the plate member 13 is passively caused by the pressing force.
- the inclination of the copying jig 10B of the bonding device 1B may be actively generated. This active means that the tip holding portion 101 is tilted even if it is not pressed.
- the bonding device 1B of the second modification has an active inclined portion 15 instead of the passive inclined portion 11.
- the active inclined portion 15 has a plate member 13 and a drive column 16 (plate member drive portion).
- the drive pillar 16 is arranged, for example, at a corner of the plate member 13. The tip of the drive end 16a abuts on the plate member 13.
- All the supports of the plate member 13 do not have to be drive columns 16.
- Drive columns 16 are provided at the three corners of the rectangular plate member 13.
- a support pillar 17 may be arranged at one corner.
- the protrusion length of the support column 17 is not variable like the drive column 16.
- the drive column 16 receives the control signal ⁇ 2 from the adjustment controller 20. As a result, the protruding length of the drive column 16 is adjusted. By adjusting the protruding length of the drive column 16, the inclination of the plate member 13 can be set to a desired inclination.
- the inclination of the chip holding portion 101 can be adjusted by the steps shown in FIGS. 11 and 12.
- the tip holding portion 101 is moved onto the copying jig 10B.
- the chip holding portion 101 may be located on the plate member 13.
- the adjustment controller 20 outputs a control signal ⁇ 2 to the drive column 16.
- the drive column 16 adjusts the length of the drive end 16a based on the control signal ⁇ 2. By adjusting the length of the drive end 16a, the plate member 13 is set to a desired inclination.
- the main controller 104 unlocks the tilt adjusting mechanism 102. Subsequently, as shown in FIG. 12A, the main controller 104 outputs the control signal ⁇ 1.
- the actuator 103 moves the tilt adjusting mechanism 102 and the tip holding portion 101 downward in the Z direction. At this time, the lock of the movable portion 102a of the tilt adjusting mechanism 102 is released. Therefore, the chip holding portion 101 fixed to the movable portion 102a follows the inclination of the plate member 13. At this time, the chip holding surface 101a may be in contact with the copying surface 103a. That is, no pressing force is generated.
- the main controller 104 locks the movable portion 102a. Then, as shown in FIG. 12B, the main controller 104 outputs the control signal ⁇ 1.
- the actuator 103 moves the tilt adjusting mechanism 102 and the tip holding portion 101 upward in the Z direction.
- 1,1A, 1B ... Bonding device 10,10A, 10B ... Copying jig, 11,11A ... Passive inclined part, 12 ... Base, 13 ... Plate member, 13a ... Copying surface, 14, 14A ... Elastic deformation part, 14s ... Variable rigidity portion, 15 ... Active tilt portion, 16 ... Drive column, 20 ... Adjustment controller, 101 ... Chip holding portion, 101a ... Chip holding surface, 102 ... Tilt adjusting mechanism (tilt adjusting means), 103 ... Actuator, 104 ... Main controller (control unit), 200 ... Bonding head, 201 ... Board, 201a ... Mounting surface, 202 ... Chip component, 202a ... Chip bonding surface, 203 ... Chip stage, 204 ... Board stage (stage), 204a ... Stage main surface (Mounting surface), A1 ... Jig reference shaft, A2 ... Stage reference shaft, D ... Deviation, F ... Pushing pressure.
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Abstract
Description
以下、図4~図8を適宜参照しながら、ボンディング調整方法を含むボンディング方法について説明する。
ボンディング装置1及びボンディングヘッド調整方法は、基板ステージ204に基板201が載置された状態であっても、調整コントローラ20がステージ主面204aの傾き情報を有している。その結果、チップ保持部101の傾きをチップ部品202が配置される場所の傾きに応じて調整することができる。従って、ダイボンド作業の歩留まりを向上することができる。
上述したように、弾性変形部は、その剛性が一定である構成に限定されない。図3(c)のグラフG3に示すように弾性変形部の剛性は、可変であってもよい。図9は、弾性変形部14Aの剛性を任意の剛性に制御可能なボンディング装置1Aの一例である。ボンディング装置1Aは、倣い治具10Aを備えている。倣い治具10Aは、受動傾斜部11Aを有する。倣い治具10Aが有する受動傾斜部11Aの弾性変形部14Aは、剛性(弾性係数、ヤング率)を制御可能な可変剛性部14sを含んでいる。可変剛性部14sは、例えば、油圧、水圧又は空気圧によって剛性を調整コントローラ20が出力する制御信号φ2に基づいて制御することができる。
実施形態の倣い治具10は、板部材13の傾きが押圧力に起因して受動的に生じるものであった。例えば、図10に示すように、ボンディング装置1Bの倣い治具10Bの傾きは、能動的に生じるものであってもよい。この能動的とは、チップ保持部101が押圧されなくても、傾きが生じることを意味する。変形例2のボンディング装置1Bは、受動傾斜部11に変えて、能動傾斜部15を有する。能動傾斜部15は、板部材13と、駆動柱16(板部材駆動部)と、を有する。駆動柱16は、例えば、板部材13の角部に配置される。駆動端16aの先端は、板部材13に当接する。板部材13の支持体は、全て駆動柱16である必要はない。矩形である板部材13の3つの角部には、駆動柱16が設けられる。1つの角部には支持柱17が配置されてもよい。支持柱17は、駆動柱16のように突き出し長さが可変ではない。駆動柱16は、調整コントローラ20からの制御信号φ2を受ける。その結果、駆動柱16の突き出し長さが調整される。駆動柱16の突き出し長さを調整することによって、板部材13の傾きを所望の傾きに設定することが可能である。
Claims (8)
- 基板が載置される載置面を有するステージと、
チップ部品を吸着保持するチップ保持面と、前記チップ保持面の傾きを調整する調整手段を有し、前記ステージに載置された前記基板に対して前記チップ部品を配置するボンディングヘッドと、
前記載置面における位置と、前記位置における傾きとを関連付けた前記ステージの傾き情報を保持する情報保持部と、
前記チップ保持面が押し付けられる倣い面を有し、前記チップ保持面の傾きが前記傾き情報に示される傾きに対応するように前記倣い面の傾きを変更可能な倣い治具と、を備える、ボンディング装置。 - 前記倣い治具は、前記倣い面を含み、前記倣い面から受ける力によって前記倣い面が受動的に傾く受動傾斜部を有し、
前記情報保持部から前記傾き情報を取得し、前記チップ保持面が前記倣い面に押し付けられたときに、前記位置における傾きに基づいて前記チップ保持面が前記倣い面に与える力を制御する制御部をさらに備える、請求項1に記載のボンディング装置。 - 前記受動傾斜部は、前記倣い面を含む板部材と、前記板部材において前記倣い面とは逆側の面に設けられた弾性変形部と、を含み、
前記弾性変形部は、樹脂材料である、請求項2に記載のボンディング装置。 - 前記受動傾斜部は、前記倣い面を含む板部材と、前記板部材において前記倣い面とは逆側の面に設けられた弾性変形部と、を含み、
前記弾性変形部は、金属製のバネである、請求項2に記載のボンディング装置。 - 前記倣い治具は、前記倣い面を含み、前記倣い面から受ける力によらず前記倣い面が能動的に傾く能動傾斜部を有し、
前記能動傾斜部は、前記倣い面を含む板部材と、前記板部材において前記倣い面とは逆側の面に設けられて前記板部材の傾きを能動的に制御する板部材駆動部と、を有し、
前記板部材駆動部は、前記倣い面の傾きが前記情報保持部から提供される前記傾き情報に示される傾きに対応するように、前記板部材を傾ける、請求項1に記載のボンディング装置。 - 基板が載置される載置面を有するステージの載置面に載置された基板に対して、チップ部品を配置するボンディングヘッドが有する前記チップ部品を吸着保持するチップ保持面の傾きを調整するボンディングヘッド調整方法であって、
前記載置面における位置と、前記位置における傾きとを関連付けた傾き情報を得る第1工程と、
前記チップ部品が配置される前記基板の位置に対応する前記載置面における位置に関連付けられた前記傾き情報に基づいて、前記チップ保持面の傾きを調整する第2工程と、を有する、ボンディングヘッド調整方法。 - 前記第2工程は、前記チップ保持面の押し付けに応じて受動的に倣い面の傾きが生じる倣い治具を用いて、前記チップ保持面の傾きを調整する、請求項6に記載のボンディングヘッド調整方法。
- 前記第2工程は、前記チップ保持面の押し付けによらず能動的に倣い面の傾きを生じさせる倣い治具を用いて、前記チップ保持面の傾きを調整する、請求項6に記載のボンディングヘッド調整方法。
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JP2014168089A (ja) * | 2014-04-23 | 2014-09-11 | Nikon Corp | 基板重ね合わせ装置、基板重ね合わせ方法、及びデバイスの製造方法 |
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TWI809393B (zh) | 2023-07-21 |
JP7352317B2 (ja) | 2023-09-28 |
US20230197670A1 (en) | 2023-06-22 |
KR20230008191A (ko) | 2023-01-13 |
CN115668468A (zh) | 2023-01-31 |
TW202145873A (zh) | 2021-12-01 |
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