WO2023042263A1 - エキスパンド装置 - Google Patents
エキスパンド装置 Download PDFInfo
- Publication number
- WO2023042263A1 WO2023042263A1 PCT/JP2021/033749 JP2021033749W WO2023042263A1 WO 2023042263 A1 WO2023042263 A1 WO 2023042263A1 JP 2021033749 W JP2021033749 W JP 2021033749W WO 2023042263 A1 WO2023042263 A1 WO 2023042263A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ring
- wafer
- cool air
- unit
- air supply
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims description 101
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 22
- 239000012634 fragment Substances 0.000 description 19
- 238000012545 processing Methods 0.000 description 13
- 238000003860 storage Methods 0.000 description 13
- 230000001681 protective effect Effects 0.000 description 11
- 239000004065 semiconductor Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67132—Apparatus for placing on an insulating substrate, e.g. tape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67109—Apparatus for thermal treatment mainly by convection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—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 temporarily an auxiliary support
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus 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
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus 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 temporarily an auxiliary support
- H01L2221/68327—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus 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 temporarily an auxiliary support used during dicing or grinding
- H01L2221/68336—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus 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 temporarily an auxiliary support used during dicing or grinding involving stretching of the auxiliary support post dicing
Definitions
- the present invention relates to an expanding device, and more particularly to an expanding device having a wafer ring structure including a wafer.
- An expanding device having a wafer ring structure including a wafer is conventionally known. Such an expanding device is disclosed in Japanese Patent No. 5243101, for example.
- the Japanese Patent No. 5243101 discloses a breaking device (expanding device) having a wafer ring structure including a wafer.
- the wafer is attached to the protective tape via a film adhesive.
- the protective tape has elasticity.
- a protective tape is attached to the annular frame.
- the wafer is formed with break lines for dividing it into a plurality of chips.
- the breaking device of Japanese Patent No. 5243101 is configured to break the wafer along grid-shaped breaking lines.
- the breaking device comprises frame holding means, protective tape expanding means, cold air introduction means, and a housing.
- the frame holding means are arranged to hold the annular frame.
- the protective tape expanding means is configured to break the wafer along the breaking line by expanding the protective tape while the annular frame is held by the frame holding means.
- the cool air introducing means is configured to cool the protective tape to a temperature at which the wafer is likely to break by introducing cool air into the closed housing.
- the present invention has been made to solve the above-mentioned problems, and one object of the present invention is to secure a path that allows a wafer to be accessed from above when cooling a sheet member by a cool air supply unit. To provide an expanding device capable of cooling a sheet member in a state.
- An expanding device includes a wafer that can be divided along a dividing line, an elastic sheet member to which the wafer is attached, and a ring-shaped member that is attached to the sheet member while enclosing the wafer. and a clamp portion for gripping the ring-shaped member, and while the ring-shaped member is gripped by the clamp portion, the sheet member is expanded to split the wafer along the split line. and a cool air supply unit for supplying cool air to the sheet member when the sheet member is expanded by the expanding unit.
- the cold air is stored in the concave portion by supplying the cold air to the concave portion surrounded by the clamp portion and the wafer ring structure in an open state without sealing the space.
- the cool air supply section grips the ring-shaped member by the clamp section and opens the space above the clamp section without sealing. And, by supplying cool air to the recess surrounded by the wafer ring structure, the cool air is accumulated in the recess.
- the sheet member can be cooled by accumulating cool air in the concave portion without supplying cold air to a sealed space such as a housing. The sheet member can be cooled while securing the path.
- the recess preferably includes the inner side surface of the clamp portion, the inner side surface of the ring-shaped member, and the bottom surface composed of the upper surface of the sheet member.
- the concave portion is formed using the inner side surface of the clamp portion, the inner side surface of the ring-shaped member, and the upper surface of the sheet member. can do. As a result, it is possible to easily form a concave portion with an open top.
- the cool air supply unit is arranged above the wafer in a state where the ring-shaped member is gripped by the clamp unit, and supplies cool air downward from above. Including mouth.
- the cool air supplied from the cool air supply port can flow directly toward the bottom of the recess, so that the cool air can be efficiently accumulated in the recess.
- the cool air supply unit is configured to be vertically movable, and in a state in which the cool air supply unit is moved downward and arranged in the recess, It is configured to supply cool air to the recess.
- a fixing member to which the cool air supply unit is fixed is further provided, and the depth of the recess in the vertical direction is greater than the length of the fixing member.
- the expanding device preferably further includes a cooling unit capable of cooling the sheet member from below while the ring-shaped member is gripped by the clamping portion, the cooling unit having a Peltier element and a Peltier element. It includes a cooling member that contacts the sheet member from below while being cooled by the element.
- the sheet member can be cooled by both the cool air supply section and the cooling unit by the control section, so that the sheet member can be sufficiently cooled.
- the clamping portion comprises a lower gripping portion that supports the ring-shaped member from below, and a portion of the inner surface of the recess that is above the ring-shaped member, and the ring and an upper grip that holds the shaped member from above.
- the inner surface of the upper gripping portion is used to form the recess when the ring-shaped member is gripped by the lower gripping portion and the upper gripping portion.
- the configuration for gripping the ring-shaped member can be made common. As a result, an increase in the configuration of the expanding device can be suppressed.
- the upper gripping section has a plurality of slide movable bodies that can slide horizontally inward toward the wafer side and outward toward the side opposite to the wafer side.
- the plurality of sliding bodies move in the vertical direction, it is possible to suppress interference between each of the plurality of sliding bodies and the structure arranged above the upper grip section. Therefore, it is possible to suppress a decrease in the degree of freedom of arrangement of the configuration arranged above the upper gripping portion in the expanding device.
- the sheet member when the sheet member is cooled by the cool air supply unit, the sheet member can be cooled while securing a path that allows the wafer to be approached from above.
- FIG. 1 is a plan view of an expanding device according to one embodiment;
- FIG. 1 is a side view of an expanding device according to one embodiment;
- FIG. FIG. 4 is a plan view of a wafer ring structure of an expanding device according to one embodiment; 4 is a cross-sectional view taken along line 101-101 of FIG. 3;
- FIG. FIG. 4 is a bottom view of a debris cleaner of an expanding device according to one embodiment;
- FIG. 4 is a bottom view of the heat shrink portion of the expanding device according to one embodiment;
- 4 is a block diagram showing a control configuration of an expanding device according to one embodiment;
- FIG. 4 is a flow chart showing semiconductor chip manufacturing processing of the expanding device according to one embodiment.
- FIG. 4 is a side view of a clamping portion of an expanding device according to one embodiment;
- FIG. 4 is a plan view showing a lower gripper and an upper gripper of an expanding device according to one embodiment;
- FIG. 4 is a side view showing a clamping section and a cool air supply section of an expanding device according to one embodiment; 12 is an enlarged view of a clamp section and a cool air supply section in FIG. 11;
- FIG. FIG. 4 is a side view of a cold air supply and a cooling unit of an expanding device according to one embodiment;
- FIG. 4 is a side view showing a state in which the sheet member is expanded by the expanding section of the expanding device according to the embodiment;
- 4 is a flow chart showing the first half of the expansion process of the expansion device according to one embodiment.
- 4 is a flow chart showing the second half of the expanding process of the expanding device according to one embodiment.
- FIG. 4 is a flow chart illustrating a contact cooling process for an expanding device according to one embodiment.
- FIG. 4 is a side view showing a state in which the wafer ring structure is placed on the lower grip part of the expanding device according to one embodiment;
- FIG. 4 is a plan view showing the lower gripping part and the upper gripping part in a state where the wafer ring structure is placed on the lower gripping part of the expanding device according to one embodiment;
- FIG. 4 is a plan view showing a state in which the wafer ring structure is placed on the lower grip part of the expanding device according to one embodiment and the upper grip part is closed.
- FIG. 4 is a plan view showing a state in which the wafer ring structure is positioned by the position adjusting section of the expanding device according to one embodiment;
- FIG. 4 is a side view showing a state in which the wafer ring structure is gripped by the lower gripping portion and the upper gripping portion of the expanding device according to one embodiment;
- FIG. 1 The configuration of an expanding device 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 22.
- FIG. 1 The configuration of an expanding device 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 22.
- expanding apparatus 100 is configured to divide wafer 210 to form a plurality of semiconductor chips. Further, the expanding device 100 is configured to form sufficient gaps between the plurality of semiconductor chips.
- a modified layer is formed in advance on the wafer 210 by irradiating the wafer 210 with a laser beam having a wavelength that is transmissive to the wafer 210 along the division lines (street).
- the modified layer refers to cracks, voids, etc. formed inside the wafer 210 by the laser.
- stealth dicing A method of forming a modified layer on the wafer 210 in this manner is called stealth dicing.
- the expanding device 100 by expanding the sheet member 220, the wafer 210 is divided along the modified layer. Further, by expanding the sheet member 220 in the expanding device 100, the gaps between the plurality of semiconductor chips that are divided and formed are widened.
- the expanding device 100 includes a base plate 1 , a cassette section 2 , a lift-up hand section 3 , a suction hand section 4 , a base 5 , an expanding section 6 , a cool air supply section 7 , a cooling unit 8 , and a fragment cleaner 9 . , a heat shrink portion 10 , and an ultraviolet irradiation portion 11 .
- the horizontal direction in which the cassette portion 2 and the heat shrink portion 10 are arranged is the X direction
- the cassette portion 2 side in the X direction is the X1 direction
- the heat shrink portion 10 side in the X direction is the X2 direction.
- the direction orthogonal to the X direction is the Y direction
- the Y1 direction is the cassette portion 2 side of the Y directions
- the Y2 direction is the opposite direction to the Y1 direction.
- the vertical direction is the Z direction
- the upward direction is the Z1 direction
- the downward direction is the Z2 direction.
- the base plate 1 is a base on which the cassette section 2 and the suction hand section 4 are installed.
- the base plate 1 has a rectangular shape elongated in the Y direction in plan view.
- the cassette section 2 is configured to accommodate a plurality (five) of wafer ring structures 200 .
- the wafer ring structure 200 has a wafer 210, a sheet member 220, and a ring-shaped member 230, as shown in FIGS.
- the wafer 210 is a circular thin plate made of a crystal of a semiconductor material that is used as a material for semiconductor integrated circuits. Inside the wafer 210, as described above, a modified layer is formed by modifying the inside along the dividing line. That is, the wafer 210 is configured to be split along the split lines.
- the sheet member 220 is an elastic adhesive tape. An adhesive layer is provided on the upper surface 220a of the sheet member 220 .
- the wafer 210 is attached to the adhesive layer of the sheet member 220 .
- the ring-shaped member 230 is a ring-shaped metal frame in plan view. A notch 240 and a notch 250 are formed in the outer surface 230 a of the ring-shaped member 230 .
- the ring-shaped member 230 is attached to the adhesive layer of the sheet member 220 while surrounding the wafer 210 .
- the cassette section 2 includes a Z-direction moving mechanism 21, a wafer cassette 22, and a pair of mounting sections 23.
- the Z-direction moving mechanism 21 is configured to move the wafer cassette 22 in the Z-direction using a motor 21a as a drive source.
- the Z-direction moving mechanism 21 also has a mounting table 21b that supports the wafer cassette 22 from below.
- the wafer cassette 22 is manually supplied and mounted on the mounting table 21b.
- the wafer cassette 22 has an accommodation space capable of accommodating a plurality of wafer ring structures 200 .
- a plurality of (five) pairs of mounting portions 23 are arranged inside the wafer cassette 22 .
- a ring-shaped member 230 of the wafer ring structure 200 is mounted on the pair of mounting portions 23 from the Z1 direction side.
- One of the pair of mounting portions 23 protrudes in the X2 direction from the inner surface of the wafer cassette 22 in the X1 direction.
- the other of the pair of mounting portions 23 protrudes in the X1 direction from the inner surface of the wafer cassette 22 in the X2 direction.
- the lift-up hand section 3 is configured to be able to take out the wafer ring structure 200 from the cassette section 2 . Further, the lift-up hand section 3 is configured so that the wafer ring structure 200 can be accommodated in the cassette section 2 .
- the lift-up hand section 3 includes a Y-direction movement mechanism 31 and a lift-up hand 32 .
- the Y-direction moving mechanism 31 is configured to move the lift-up hand 32 in the Y-direction using a motor 31a as a drive source.
- the lift-up hand 32 is configured to support the ring-shaped member 230 of the wafer ring structure 200 from the Z2 direction side.
- the suction hand unit 4 is configured to suction the ring-shaped member 230 of the wafer ring structure 200 from the Z1 direction side.
- the suction hand unit 4 includes an X-direction movement mechanism 41 , a Z-direction movement mechanism 42 and a suction hand 43 .
- the X-direction moving mechanism 41 is configured to move the suction hand 43 in the X direction using a motor 41a as a drive source.
- the Z-direction moving mechanism 42 is configured to move the suction hand 43 in the Z-direction using a motor 42a as a drive source.
- the suction hand 43 is configured to support the ring-shaped member 230 of the wafer ring structure 200 from the Z1 direction side.
- the base 5 is a base on which the expanding section 6, the cooling unit 8 and the ultraviolet irradiation section 11 are installed.
- the base 5 has a rectangular shape elongated in the Y direction in plan view.
- the expanding section 6 is configured to expand the sheet member 220 of the wafer ring structure 200 to divide the wafer 210 along the dividing line.
- the expanding section 6 includes a Z-direction moving mechanism 61 , a Y-direction moving mechanism 62 , a clamp section 63 and an expanding ring 64 .
- the Z-direction moving mechanism 61 is configured to move the clamp portion 63 in the Z-direction using a motor 61a as a drive source.
- the Y-direction moving mechanism 62 is configured to move the Z-direction moving mechanism 61, the clamp portion 63 and the expand ring 64 in the Y direction using a motor 62a as a drive source.
- the clamp part 63 is configured to grip the ring-shaped member 230 of the wafer ring structure 200 .
- the clamp portion 63 has a lower grip portion 63a and an upper grip portion 63b.
- the lower grip portion 63a supports the ring-shaped member 230 from the Z2 direction side.
- the upper gripping portion 63b presses the ring-shaped member 230 supported by the lower gripping portion 63a from the Z1 direction side.
- the ring-shaped member 230 is gripped by the lower gripping portion 63a and the upper gripping portion 63b.
- the expand ring 64 is configured to expand the sheet member 220 by supporting the sheet member 220 from the Z2 direction side.
- the expand ring 64 has a ring shape in plan view.
- the cool air supply unit 7 is configured to supply cold air to the sheet member 220 from the Z1 direction side when the sheet member 220 is expanded by the expanding unit 6 .
- the cool air supply unit 7 has a plurality of nozzles 71 .
- the nozzle 71 has a cool air supply port 71a (see FIG. 5) through which cool air supplied from a cool air supply source (not shown) flows out.
- a nozzle 71 is attached to the debris cleaner 9 .
- a cold source is a chiller for generating cold.
- the cool air supply source supplies air cooled by, for example, a cooling device provided with a heat pump or the like. Such cold air supply is mounted on the base 5 .
- a cool air supply source and each of the plurality of nozzles 71 are connected by a hose (not shown).
- the cooling unit 8 is configured to cool the sheet member 220 from the Z2 direction side when the sheet member 220 is expanded by the expanding section 6 .
- the cooling unit 8 includes a cooling member 81 having a cooling body 81 a and a Peltier element 81 b, and a cylinder 82 .
- the cooling body 81a is made of a member having a large heat capacity and a high thermal conductivity.
- the cooling body 81a is made of metal such as aluminum.
- the Peltier element 81b is configured to cool the cooling body 81a. Note that the cooling body 81a is not limited to aluminum, and may be another member having a large heat capacity and a high thermal conductivity.
- the cooling unit 8 is configured to be movable in the Z direction by means of a cylinder 82. Thereby, the cooling unit 8 can move to a position in contact with the sheet member 220 and a position away from the sheet member 220 .
- the fragment cleaner 9 is configured to suck fragments of the wafer 210 and the like when the sheet member 220 is expanded by the expanding section 6 .
- the fragment cleaner 9 includes a ring-shaped member 91 and a plurality of suction ports 92.
- the ring-shaped member 91 is a member having a ring shape when viewed from the Z1 direction side.
- the plurality of suction ports 92 are openings for sucking fragments of the wafer 210 and the like.
- a plurality of suction ports 92 are formed on the lower surface of the ring-shaped member 91 on the Z2 direction side. Note that the ring-shaped member 91 is an example of a "fixing member" in the claims.
- the debris cleaner 9 is configured to be movable in the Z direction by means of a cylinder (not shown). As a result, the fragment cleaner 9 can move to a position close to the wafer 210 and to a position where the suction hand 43 moving in the X direction can be avoided.
- the heat shrink section 10 is configured to shrink the sheet member 220 expanded by the expanding section 6 by heating while maintaining the gaps between the plurality of semiconductor chips.
- the heat shrink section 10 includes a Z-direction moving mechanism 110, a heating ring 111, an intake ring 112, and an expansion maintaining ring 113.
- the Z-direction moving mechanism 110 is configured to move the heating ring 111 and the suction ring 112 in the Z direction using a motor 110a as a drive source.
- the heating ring 111 has a ring shape in plan view.
- the heating ring 111 also has a sheathed heater that heats the sheet member 220 .
- the intake ring 112 is configured integrally with the heating ring 111 .
- the intake ring 112 has a ring shape in plan view.
- a plurality of intake ports 112a are formed in the lower surface of the intake ring 112 on the Z2 direction side.
- the expansion maintaining ring 113 is configured to hold down the sheet member 220 from the Z1 direction side so that the sheet member 220 near the wafer 210 does not shrink due to heating by the heating ring 111 .
- the expansion maintaining ring 113 has a ring shape in plan view.
- the expansion retaining ring 113 is configured to be movable in the Z direction by a cylinder (not shown). This allows the expansion retaining ring 113 to move to a position holding the seat member 220 and a position away from the seat member 220 .
- the ultraviolet irradiation unit 11 is configured to irradiate the sheet member 220 with ultraviolet rays in order to reduce the adhesive strength of the adhesive layer of the sheet member 220 .
- the ultraviolet irradiation section 11 has an ultraviolet light.
- the expanding device 100 includes a first control unit 12, a second control unit 13, a third control unit 14, a fourth control unit 15, a fifth control unit 16, an expansion control calculation A unit 17 , a handling control calculation unit 18 , and a storage unit 19 are provided.
- the first control section 12 is configured to control the heat shrink section 10 .
- the first control unit 12 includes a CPU (Central Processing Unit) and a storage unit having ROM (Read Only Memory) and RAM (Random Access Memory).
- the first control unit 12 may include, as a storage unit, an HDD (Hard Disk Drive) that retains stored information even after the voltage is cut off. Also, the HDD may be provided in common to the first control section 12 , the second control section 13 , the third control section 14 , the fourth control section 15 and the fifth control section 16 .
- an HDD Hard Disk Drive
- the second control section 13 is configured to control the cool air supply section 7 , the cooling unit 8 and the debris cleaner 9 .
- the second control unit 13 includes a CPU and a storage unit having ROM, RAM, and the like.
- the third control section 14 is configured to control the expanding section 6 .
- the third control unit 14 includes a CPU and a storage unit having ROM, RAM, and the like. Note that the second control unit 13 and the third control unit 14 may include, as a storage unit, an HDD or the like that retains stored information even after the voltage is cut off.
- the fourth control section 15 is configured to control the cassette section 2 and the lift-up hand section 3.
- the fourth control unit 15 includes a CPU and a storage unit having ROM, RAM, and the like.
- the fifth control section 16 is configured to control the suction hand section 4 .
- the fifth control unit 16 includes a CPU and a storage unit having ROM, RAM, and the like. Note that the fourth control unit 15 and the fifth control unit 16 may include, as a storage unit, an HDD or the like that retains stored information even after the voltage is cut off.
- the expansion control calculation unit 17 is configured to perform calculations related to expansion processing of the sheet member 220 based on the processing results of the first control unit 12, the second control unit 13 and the third control unit 14.
- the expansion control calculation unit 17 includes a CPU and a storage unit having ROM, RAM, and the like.
- the handling control calculation unit 18 is configured to perform calculations related to the process of moving the wafer ring structure 200 based on the processing results of the fourth control unit 15 and the fifth control unit 16 .
- the handling control calculation unit 18 includes a CPU and a storage unit having ROM, RAM, and the like.
- a program for operating the expanding device 100 is stored in the storage unit 19 .
- the storage unit 19 includes ROM, RAM, and the like.
- step S1 the wafer ring structure 200 is taken out from the cassette section 2. That is, after the wafer ring structure 200 housed in the cassette section 2 is supported by the lift-up hand 32, the lift-up hand 32 is moved in the Y2 direction by the Y-direction moving mechanism 31, whereby the wafer ring structure 200 is removed from the cassette section 2. Structure 200 is retrieved.
- step S ⁇ b>2 the wafer ring structure 200 is transferred to the expanding section 6 by the suction hand 43 . That is, the wafer ring structure 200 taken out from the cassette section 2 is moved in the X2 direction by the X-direction moving mechanism 41 while being sucked by the suction hand 43 . The wafer ring structure 200 that has moved in the X2 direction is transferred from the suction hand 43 to the clamp section 63 and then gripped by the clamp section 63 .
- step S3 the sheet member 220 is expanded by the expanding section 6.
- the sheet member 220 of the wafer ring structure 200 gripped by the clamp section 63 is cooled by both the cool air supply section 7 and the cooling unit 8 .
- the wafer ring structure 200 cooled to a predetermined temperature is lowered by the Z-direction moving mechanism 61 while being gripped by the clamp portion 63 .
- the sheet member 220 is expanded by the expand ring 64 to divide the wafer 210 along the dividing line. At this time, the wafer 210 is divided while suctioning the fragments by the fragment cleaner 9 .
- step S4 while maintaining the expanded state of the sheet member 220, the expanded portion 6 is moved to the Z2 direction side of the heat shrink portion 10. That is, after the wafer 210 is divided, the wafer ring structure 200 with the sheet member 220 expanded is moved in the Y1 direction by the Y-direction moving mechanism 62 .
- step S5 the sheet member 220 is heated by the heat shrink section 10 to be shrunk.
- the wafer ring structure 200 moved in the Y1 direction is heated by the heating ring 111 while being sandwiched between the expansion retaining ring 113 and the expand ring 64 .
- suction by the suction ring 112 and irradiation of ultraviolet rays by the ultraviolet irradiation unit 11 are performed.
- step S6 the expanding section 6 is returned to its original position. That is, the wafer ring structure 200 with the contracted sheet member 220 is moved in the Y2 direction by the Y-direction moving mechanism 31 .
- step S ⁇ b>7 the wafer ring structure 200 is transferred from the expanding section 6 to the lift-up hand section 3 by the suction hand 43 , is moved in the X1 direction by the X-direction moving mechanism 41 , and is transferred to the lift-up hand 32 .
- step S ⁇ b>8 the wafer ring structure 200 is accommodated in the cassette part 2 .
- the wafer ring structure 200 supported by the lift-up hand 32 is moved in the Y1 direction by the Y-direction moving mechanism 31 , so that the wafer ring structure 200 is housed in the cassette section 2 .
- the processing performed on one wafer ring structure 200 is completed.
- FIG. 9 (Detailed configuration of the clamp section, cool air supply section, and cooling unit) Detailed configurations of the clamp section 63, the cold air supply section 7, and the cooling unit 8 will be described with reference to FIGS. 9 to 14.
- FIG. 9 (Detailed configuration of the clamp section, cool air supply section, and cooling unit)
- the lower grip portion 63a has a support 163a, a position adjusting portion 163b, a positioning pin 163c, and a positioning pin 163d.
- the support 163a supports the ring-shaped member 230 of the wafer ring structure 200 from the Z2 direction side.
- a through hole 163e is formed in the support 163a.
- the through hole 163e penetrates the support 163a in the Z direction.
- the through hole 163e is formed to bring the cooling body 81a into contact with the sheet member 220 from the Z2 direction side.
- the dimension of the through-hole 163e is larger than that of the cooling body 81a in the horizontal direction (XY direction).
- the dimension of the through-hole 163e is slightly smaller than that of the ring-shaped member 230 in the horizontal direction (XY direction).
- the position adjustment part 163b is configured to move the wafer ring structure 200 placed on the support 163a toward the positioning pins 163c and 163d.
- the position adjusting portion 163b is configured to be movable in the E1 direction toward the positioning pins 163c and 163d in the Y direction.
- the position adjusting portion 163b is configured to be movable in the E2 direction away from the positioning pins 163c and 163d in the Y direction.
- the position adjustment part 163b By moving in the E1 direction, the position adjustment part 163b brings the notch 240 of the wafer ring structure 200 placed on the support 163a into contact with the positioning pin 163c. Further, the position adjustment part 163b moves in the E1 direction to bring the notch 250 of the wafer ring structure 200 placed on the support 163a into contact with the positioning pin 163d. Thereby, the horizontal positioning of the wafer ring structure 200 is performed. After positioning the wafer ring structure 200, the position adjusting part 163b moves in the E2 direction and returns to its original position.
- Each of the positioning pin 163c and the positioning pin 163d is a pin protruding in the Z1 direction from the upper surface of the support 163a on the Z1 direction side.
- the positioning pin 163 c is arranged at a position corresponding to the notch 240 .
- the positioning pin 163 d is arranged at a position corresponding to the notch 250 .
- the upper grip part 63b has a plurality (four) of slides.
- the plurality of sliding bodies can slide horizontally inward toward the wafer 210 (hereinafter referred to as direction D1) and outwardly toward the side opposite to the wafer 210 (hereinafter referred to as direction D2). be.
- the plurality of sliding moving bodies are a first sliding moving body 263a, a second sliding moving body 263b, a third sliding moving body 263c, and a fourth sliding moving body 263d.
- the first sliding moving body 263a and the second sliding moving body 263b are arranged at positions facing each other in the Y direction. Each of the first slide moving body 263a and the second slide moving body 263b can move in the D1 direction in the Y direction to approach the wafer 210 and in the D2 direction in the Y direction opposite to the wafer 210 side.
- the third slide moving body 263c and the fourth slide moving body 263d are arranged at positions facing each other in the X direction. Each of the third slide moving body 263c and the fourth slide moving body 263d can move in the D1 direction toward the wafer 210 in the X direction and in the D2 direction opposite to the wafer 210 side in the X direction.
- Each of the first slide moving body 263a, the second slide moving body 263b, the third slide moving body 263c, and the fourth slide moving body 263d moves in the D1 direction, thereby moving the ring-shaped member 230 from the Z1 direction side. It is arranged at a position (inside position) for pressing. Further, each of the first slide moving body 263a, the second slide moving body 263b, the third slide moving body 263c, and the fourth slide moving body 263d moves in the D2 direction, thereby moving the ring-shaped member 230 in the Z1 direction. It is placed at a position (outside position) where it is not pressed from the side. At the outer position, the wafer ring structure 200 moves in the Z direction inside the first sliding body 263a, the second sliding body 263b, the third sliding body 263c, and the fourth sliding body 263d. becomes possible.
- Each of the first slide moving body 263a, the second slide moving body 263b, the third slide moving body 263c, and the fourth slide moving body 263d is driven in the D1 direction using an actuator such as a motor or a cylinder as a drive source (not shown). and D2 direction.
- the cool air supply unit 7 of the present embodiment is configured to retain the cool air near the sheet member 220 of the wafer ring structure 200 instead of supplying the cool air into the sealed housing. It is In addition, in FIG. 11, cold air is virtually indicated by hatching. That is, the cool air supply unit 7 grips the ring-shaped member 230 with the clamp part 63 and, in a state in which the space on the Z1 direction side of the clamp part 63 is left open without being sealed, clamps the clamp part 63 and the wafer ring structure 200. By supplying cool air to the enclosed recess 120 , the cool air is accumulated in the recess 120 .
- the cool air supply unit 7 includes multiple (two) nozzles 71 and a temperature sensor 72 . Although two nozzles 71 are provided, one or three or more nozzles may be provided.
- Each of the plurality of nozzles 71 is configured to flow cold air toward the Z2 direction.
- Each of the plurality of nozzles 71 has a cool air supply port 71a.
- the cool air supply port 71a is arranged on the Z1 direction side of the wafer 210 in a state where the ring-shaped member 230 is gripped by the clamp portion 63, and is configured to supply cool air from the Z1 direction side to the Z2 direction side. ing.
- the cold air supply port 71a is opened toward the Z2 direction side. The cold air flowing from the cold air supply port 71 a flows toward the wafer 210 and hits the wafer 210 to flow toward the sheet member 220 around the wafer 210 .
- the temperature sensor 72 is configured to measure the ambient temperature inside the recess 120 .
- the temperature sensor 72 and the second controller 13 are electrically connected. Thereby, the temperature measurement value of the temperature sensor 72 is sent to the second controller 13 .
- a temperature sensor 72 is attached to the outer surface of the ring-shaped member 91 of the debris cleaner 9 .
- the recessed portion 120 is a recessed space that is recessed from the upper end portion of the clamp portion 63 toward the Z2 direction.
- the recess 120 has an inner side surface 120a and a bottom surface 120b.
- Each of the inner side surface 263e and the inner side surface 230b is a side surface formed on the wafer 210 side in the horizontal direction.
- the inner side surface 120 a is composed of the inner side surface 263 e of the upper grip portion 63 b of the clamp section 63 and the inner side surface 230 b of the ring-shaped member 230 .
- the inner surface 263e is a surface formed when each of the first slide moving body 263a, the second slide moving body 263b, the third slide moving body 263c, and the fourth slide moving body 263d is moved in the D1 direction. be.
- the bottom surface 120b is a surface formed on the Z2 direction side of the cool air supply unit 7 .
- the bottom surface 120b is composed of the top surface 220a of the sheet member 220. As shown in FIG. In this manner, in the recess 120 , cold air, which has a higher density than room temperature air, stays near the upper surface 220 a of the sheet member 220 .
- the accumulated cold air is prevented from flowing out of the concave portion 120 by the inner surface 263 e of the upper grip portion 63 b of the clamp portion 63 , the inner surface 230 b of the ring-shaped member 230 and the upper surface 220 a of the sheet member 220 .
- the depth F of the concave portion 120 is greater than the length L of the ring-shaped member 91 in the Z direction.
- the width W1 of the recess 120 is larger than the width W2 of the ring-shaped member 91 in the horizontal direction (XY direction).
- the recess 120 has a size that can accommodate the ring-shaped member 91 .
- the recess 120 has a substantially hexagonal shape in plan view (see FIG. 1).
- the cool air supply unit 7 is configured to be movable in the Z direction together with the ring-shaped member 91 by a cylinder (not shown). As a result, the cool air supply unit 7 can move to a lower position Dw (see FIG. 11) close to the wafer 210 and an upper position Up (see FIG. 2) where the suction hand 43 moving in the X direction can be avoided. It is possible. Therefore, the cool air supply unit 7 is configured to supply cool air to the recess 120 in a state of being moved in the Z2 direction and arranged at a position (lower position Dw) inside the recess 120 .
- the cooling unit 8 is a unit used for cooling the sheet member 220 together with the cooling of the sheet member 220 by the cool air supply section 7 .
- the cooling unit 8 By using both the cool air supply unit 7 and the cooling unit 8 in this way, it is possible to prevent the cooling capacity from becoming insufficient.
- a film member for example, a die attach film
- the cooling unit 8 made of a slightly soft material that is difficult to cool. Even so, it is possible to cool the sheet member 220 more reliably.
- the cooling unit 8 is configured to cool the sheet member 220 from the Z2 direction side while the ring-shaped member 230 is gripped by the clamp portion 63 .
- the cooling unit 8 includes a cooling member 81 having a cooling body 81a and a Peltier element 81b and a cylinder 82, as described above.
- the cooling body 81a cooled by the Peltier element 81b is raised in the Z1 direction by the cylinder 82 and contacts the sheet member 220 from the Z2 direction side.
- the second control unit 13 performs control to cool the space in the recess 120 to a predetermined temperature using cool air supplied from the cool air supply unit 7 based on the temperature measurement value of the temperature sensor 72 .
- the predetermined temperature is, for example, approximately 0°C.
- the second control unit 13 causes the cooling body 81a to contact the sheet member 220 from the Z2 direction for the set time based on the preset set time. 220 is configured to control cooling.
- the second control unit 13 determines whether or not cooling by both the cool air supply unit 7 and the cooling unit 8 preset according to the type of the sheet member 220 is necessary. Based on the setting, cool air is stored in the recess 120 to cool the sheet member 220 from the Z1 direction side, and the cooling unit 8 cools the sheet member 220 from the Z2 direction side. configured to control. Whether cooling by both the cool air supply unit 7 and the cooling unit 8 is necessary is preset by the user according to the type of the sheet member 220 .
- the second control unit 13 stops cooling by the cooling unit 8 based on the elapse of the set time, and then moves the cooling member 81 in the Z2 direction and arranges it at the lower position. configured to control.
- the second control unit 13 is configured to perform control to start suction by the fragment cleaner 9 based on the temperature inside the recess 120 reaching a predetermined temperature.
- the third control unit 14 is configured to perform control to move the clamp unit 63 in the Z2 direction based on having received from the expansion control calculation unit 17 a notification that the suction by the fragment cleaner 9 has started.
- the sheet member 220 is expanded by the expand ring 64 to divide the wafer 210 along the dividing lines, thereby forming a plurality of semiconductor chips.
- the second control unit 13 stops the cool air supply by the cool air supply unit 7 based on the notification that the clamp unit 63 is arranged at the lower end position in the Z2 direction from the expansion control calculation unit 17, and It is configured to perform control to stop suction by the fragment cleaner 9 .
- the second control unit 13 is configured to perform control to move the cool air supply unit 7 in the Z1 direction and place it at the upper position Up based on the fact that the cool air supply by the cool air supply unit 7 is stopped.
- the expanding process in the expanding device 100 will be described with reference to FIGS. 15 and 16.
- FIG. The expanding process is a process performed in step S3 in the semiconductor chip manufacturing process.
- step S301 the suction hand 43 is raised in the Z1 direction based on the wafer ring structure 200 being placed on the lower gripping section 63a by the second control section 13.
- each of the first slide moving body 263a, the second slide moving body 263b, the third slide moving body 263c, and the fourth slide moving body 263d of the upper grip portion 63b is in a state of being moved in the D2 direction (FIG. 18). and FIG. 19).
- a ring-shaped member 230 is mounted on the support 163a of the lower grip portion 63a (see FIGS. 18 and 19).
- step S302 the third control unit 14 obtains from the expansion control calculation unit 17 a notification that the suction hand 43 has been lifted, and the first slide moving body 263a and the second slide moving body of the upper gripping part 63b are moved. 263b, the third slide moving body 263c and the fourth slide moving body 263d each move in the D1 direction (see FIG. 20).
- step S303 the third control unit 14 moves the position adjustment unit 163b in the E1 direction. At this time, notch 240 of wafer ring structure 200 abuts against positioning pin 163c, and notch 250 of wafer ring structure 200 abuts against positioning pin 163d (see FIG. 21). This positions the wafer ring structure 200 in the horizontal direction. After the position adjustment portion 163b is moved in the E1 direction by the third control portion 14, the position adjustment portion 163b is moved in the E2 direction and returned to the original position.
- step S304 the third control unit 14 returns the position adjusting unit 163b to its original position, moves (raises) the lower gripping unit 63a in the Z1 direction, and separates the upper gripping unit 63b and the lower gripping unit 63a. and grip the ring-shaped member 230 of the wafer ring structure 200 (see FIG. 22).
- step S305 the fragment cleaner 9 descends based on the second control unit 13 having received from the expansion control calculation unit 17 a notification that the lower gripping unit 63a has finished rising (see FIG. 11).
- step S306 the second control unit 13 determines whether or not the sheet member 220 needs to be cooled. If cooling of the sheet member 220 is required, the process proceeds to step S307, and if cooling of the sheet member 220 is not required, the process proceeds to step S309 in FIG.
- step S307 after the supply of cold air by the cold air supply unit 7 is started by the second control unit 13 (see FIG. 11), the process proceeds to step S400.
- step S ⁇ b>400 contact cooling processing is performed by the second control unit 13 . The contact cooling process will be described later.
- step S308 the second control unit 13 determines whether the ambient temperature in the recess 120 measured by the temperature sensor 72 has reached a predetermined temperature. If the predetermined temperature has been reached, the process proceeds to step S309 in FIG. 16, and if the predetermined temperature has not been reached, step S308 is repeated.
- step S309 the second control unit 13 causes the fragment cleaner 9 to start suctioning.
- the suction amount of the fragment cleaner 9 is smaller than the amount of cool air supplied from the cool air supply unit 7 .
- step S310 the third control unit 14 rapidly lowered the clamp unit 63 and used the expand ring 64 based on the notification that the suction by the fragment cleaner 9 was started from the expansion control calculation unit 17. Expansion is performed (see FIG. 14).
- step S311 the cooling by the cool air supply unit 7 is stopped by the second control unit 13 based on the notification that the expansion is completed from the expansion control calculation unit 17. If it is not necessary to cool the sheet member 220 by the cool air supply section 7 and the cooling unit 8, the process proceeds to step S312 without performing the process of step S311.
- step S312 the suction of the fragment cleaner 9 is stopped by the second control unit 13 based on the cooling by the cool air supply unit 7 being stopped.
- step S313 after the fragment cleaner 9 is lifted by the second control unit 13 based on the fact that the suction by the fragment cleaner 9 is stopped, the expanding process ends. Note that when the sheet member 220 does not need to be cooled by the cold air supply unit 7 and the cooling unit 8, the second control unit 13 receives the notification that the expansion is completed from the expansion control calculation unit 17, The suction of the cleaner 9 is stopped.
- the contact cooling process in the expanding device 100 will be described with reference to FIG. 17 .
- the contact cooling process is a process that indicates cooling by the cooling unit 8 that is performed together with cooling by the cool air supply unit 7 .
- step S401 cooling of the cooling body 81a by the Peltier element 81b is started based on the second control unit 13 raising the cooling body 81a (see FIG. 13).
- step S402 it is determined whether or not the set time has elapsed. If the set time has passed, the process proceeds to step S403, and if the set time has not passed, step S402 is repeated.
- step S403 the second controller 13 causes the cooling body 81a to descend.
- step S404 the second control unit 13 stops the cooling of the cooling body 81a by the Peltier device 81b, and then the contact cooling process ends.
- the cool air supply unit 7 grips the ring-shaped member 230 with the clamp part 63 and opens the space above the clamp part 63 without sealing.
- the cool air is accumulated in the recess 120 .
- the cold air can be accumulated in the concave portion 120 to cool the sheet member 220 without supplying cold air to a sealed space such as a housing.
- the sheet member 220 can be cooled while securing a path accessible from the Z1 direction side.
- the recess 120 includes the inner side surface 263e of the clamp portion 63, the inner side surface 230b of the ring-shaped member 230, and the bottom surface 120b composed of the upper surface 220a of the sheet member 220, as described above.
- the inner side surface 263e of the clamping portion 63, the inner side surface 230b of the ring-shaped member 230, and the upper surface 220a of the sheet member 220 form the concave portion 120, so that the clamping portion 63 grips the ring-shaped member 230.
- the recess 120 can be formed only by As a result, it is possible to easily form the concave portion 120 that is open in the Z1 direction.
- the cold air supply unit 7 is arranged on the Z1 direction side of the wafer 210 in a state where the ring-shaped member 230 is gripped by the clamp unit 63, and is arranged from the Z1 direction side to the Z2 direction side. It includes a cool air supply port 71a that supplies cool air toward the side. As a result, the cool air supplied from the cool air supply port 71a can flow directly toward the bottom of the recess 120, so that the cool air can be efficiently accumulated in the recess 120. As shown in FIG.
- the cool air supply unit 7 is configured to be movable in the Z direction.
- the cool air supply unit 7 is configured to supply cool air to the recess 120 while being moved in the Z2 direction and positioned within the recess 120 .
- cool air is supplied to the recess 120 with the cool air supply unit 7 arranged (fixed) outside the recess 120, it is possible to prevent cool air from flowing outside the recess 120. You can reliably supply cold air inside.
- the expanding device 100 includes the ring-shaped member 91 to which the cold air supply section 7 is fixed.
- the depth F of the recess 120 is greater than the length L of the ring-shaped member 91 in the Z direction. As a result, the depth F of the recessed portion 120 can be ensured, so that more cold air can be accumulated in the recessed portion 120 .
- the expanding device 100 includes the cooling unit 8 capable of cooling the sheet member 220 from below while the ring-shaped member 230 is gripped by the clamp portion 63 .
- the cooling unit 8 includes a cooling member 81 that has a Peltier element 81b and contacts the sheet member 220 from below while being cooled by the Peltier element 81b.
- the sheet member 220 can be cooled not only by the cold air supply section 7 but also by the cooling member 81, so that the sheet member 220 can be cooled more effectively.
- the expanding device 100 is cooled by the cool air supply unit 7 that cools the sheet member 220 from above by collecting cool air in the recess 120 and the cooling unit that cools the sheet member 220 from below. It further comprises a second control unit 13 that controls both cooling by 8 . With this configuration, the sheet member 220 can be cooled by both the cool air supply section 7 and the cooling unit 8 by the second control section 13, so that the sheet member 220 can be sufficiently cooled.
- the clamping portion 63 includes the lower grip portion 63a that supports the ring-shaped member 230 from the Z2 direction side, and the inner side surface 120a of the recess 120 that is closer to the ring-shaped member 230 than the ring-shaped member 230 is. It includes an upper grip portion 63b that constitutes the direction side portion and presses the ring-shaped member 230 from the Z1 direction side.
- the inner surface 263e of the upper gripping portion 63b is used to form the recess 120 when the ring-shaped member 230 is gripped by the lower gripping portion 63a and the upper gripping portion 63b. and the configuration for holding the ring-shaped member 230 can be shared. As a result, an increase in the configuration of the expanding device 100 can be suppressed.
- the upper gripping portion 63b is the first slide movable body that can slide horizontally in the D1 direction on the wafer 210 side and in the D2 direction on the side opposite to the wafer 210 side.
- 263a, a second slide mover 263b, a third slide mover 263c and a fourth slide mover 263d are the first slide moving body 263a and the second slide moving body 263a move in the Z direction.
- the cool air supply port 71a supplies cold air from the Z1 direction side to the Z2 direction side (from above to below), but the present invention is not limited to this.
- the cold air supply port may supply cold air in a horizontal direction.
- the cool air supply unit 7 is configured to supply cool air to the recess 120 while being moved in the Z2 direction (downward) and placed in the recess 120.
- the cool air supply unit may be configured to supply cool air to the recess while being arranged at a position outside the recess.
- the depth F of the recess 120 is greater than the length L of the ring-shaped member 91 (fixing member), but the present invention is not limited to this. In the present invention, the depth of the recess may be smaller than the length of the fixing member.
- the expanding device 100 is provided with the cooling unit 8, but the present invention is not limited to this. In the present invention, the expanding device may not have a cooling unit.
- the cooling member 81 has the Peltier element 81b, but the present invention is not limited to this.
- the cooling body may be cooled by a cooling element other than the Peltier element.
- the cool air supply may be a cylindrical part rather than a tapered part like the nozzle.
- the temperature sensor 72 is attached to the outer surface of the ring-shaped member 91 of the fragment cleaner 9, but the present invention is not limited to this. In the present invention, the temperature sensor may be attached to other locations such as the clamp portion as long as it is possible to measure the ambient temperature inside the recess.
- the cool air supply port 71a is formed in the nozzle 71 is shown, but the present invention is not limited to this.
- the cool air supply port may be formed in the clamp portion or the like.
- the cool air supply unit 7 is configured to be movable in the Z direction together with the ring-shaped member 91 by means of a cylinder (not shown), but the present invention is not limited to this. .
- the cool air supply may be arranged at a fixed location without moving.
- control processing of the second control unit 13 has been described using a flow-driven flowchart in which processing is performed in order along the processing flow.
- the present invention is not limited to this.
- the control processing of the control unit may be performed by event-driven processing that executes processing on an event-by-event basis. In this case, it may be completely event-driven, or a combination of event-driven and flow-driven.
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Abstract
Description
図1および図2に示すように、エキスパンド装置100は、ウエハ210を分割して複数の半導体チップを形成するように構成されている。また、エキスパンド装置100は、複数の半導体チップ同士の間に十分な隙間を形成するように構成されている。ここで、ウエハ210には、ウエハ210に対して透過性を有する波長のレーザを分割ライン(ストリート)に沿って照射することにより、予め改質層が形成されている。改質層とは、レーザによりウエハ210の内部に形成された亀裂およびボイドなどを示す。このように、ウエハ210に改質層を形成する手法をステルス式ダイシング加工という。
ベースプレート1は、カセット部2および吸着ハンド部4が設置される基台である。ベースプレート1は、平面視において、Y方向に長い矩形形状を有している。
カセット部2は、複数(5個)のウエハリング構造200を収容可能に構成されている。ここで、ウエハリング構造200は、図3および図4に示すように、ウエハ210と、シート部材220と、リング状部材230とを有している。
リフトアップハンド部3は、カセット部2からウエハリング構造200を取出可能に構成されている。また、リフトアップハンド部3は、カセット部2にウエハリング構造200を収容可能に構成されている。
吸着ハンド部4は、ウエハリング構造200のリング状部材230をZ1方向側から吸着するように構成されている。
ベース5は、エキスパンド部6、冷却ユニット8および紫外線照射部11が設置される基台である。ベース5は、平面視において、Y方向に長い矩形形状を有している。
エキスパンド部6は、ウエハリング構造200のシート部材220をエキスパンドすることにより、分割ラインに沿ってウエハ210を分割するように構成されている。
冷気供給部7は、エキスパンド部6によりシート部材220をエキスパンドさせる際、シート部材220にZ1方向側から冷気を供給するように構成されている。
冷却ユニット8は、エキスパンド部6によりシート部材220をエキスパンドさせる際、シート部材220をZ2方向側から冷却するように構成されている。
破片クリーナ9は、エキスパンド部6によりシート部材220をエキスパンドさせる際、ウエハ210の破片などを吸引するように構成されている。
ヒートシュリンク部10は、エキスパンド部6によりエキスパンドされたシート部材220を、複数の半導体チップ同士の間の隙間を保持した状態で、加熱により収縮させるように構成されている。
紫外線照射部11は、シート部材220の粘着層の粘着力を低下させるために、シート部材220に紫外線を照射するように構成されている。具体的には、紫外線照射部11は、紫外線用照明を有している。
図7に示すように、エキスパンド装置100は、第1制御部12と、第2制御部13と、第3制御部14と、第4制御部15と、第5制御部16と、エキスパンド制御演算部17と、ハンドリング制御演算部18と、記憶部19とを備えている。
エキスパンド装置100の全体的な動作について以下に説明する。
図9~図14を参照して、クランプ部63、冷気供給部7および冷却ユニット8の詳細な構成について説明する。
図9および図10に示すように、下側把持部63aは、支持体163aと、位置調整部163bと、位置決めピン163cと、位置決めピン163dとを有している。
図9および図10に示すように、上側把持部63bは、複数(4つ)のスライド移動体を有している。複数のスライド移動体は、水平方向においてウエハ210側の内側方向(以下、D1方向とする)、および、ウエハ210側とは逆側の外側方向(以下、D2方向とする)にスライド移動可能である。複数のスライド移動体は、第1スライド移動体263a、第2スライド移動体263b、第3スライド移動体263c、および、第4スライド移動体263dである。
図11に示すように、本実施形態の冷気供給部7は、密閉された筐体の中に冷気を供給するのではなく、ウエハリング構造200のシート部材220付近に冷気を滞留させるように構成されている。なお、図11において、冷気は、仮想的にハッチングにより示す。すなわち、冷気供給部7は、クランプ部63によりリング状部材230を把持するとともに、クランプ部63よりもZ1方向側の空間を密閉せずに開放した状態で、クランプ部63およびウエハリング構造200に囲まれた凹部120に冷気を供給することにより、冷気を凹部120に溜めるように構成されている。
図13に示すように、冷却ユニット8は、冷気供給部7によるシート部材220の冷却とともに、シート部材220を冷却するために用いられるユニットである。このように、冷気供給部7および冷却ユニット8の両方を用いることにより、冷却能力が不足しないようにすることが可能である。これにより、たとえば、ウエハ210の下にフィルム部材(たとえば、ダイアタッチフィルムなど)が配置されたシート部材220を用いる場合、および、少し柔らかいため冷却されにくい材質のシート部材220を用いる場合などの場合であっても、より確実にシート部材220を冷却することが可能である。
図11に示すように、第2制御部13は、温度センサ72の温度計測値に基づいて、冷気供給部7から供給される冷気により、凹部120内の空間を所定温度に冷却する制御を行うように構成されている。所定温度は、たとえば、約0℃などである。また、図13に示すように、第2制御部13は、予め設定された設定時間に基づいて、設定時間の間、冷却体81aをシート部材220にZ2方向側から接触させることにより、シート部材220を冷却する制御を行うように構成されている。
図15および図16を参照して、エキスパンド装置100におけるエキスパンド処理について説明する。エキスパンド処理は、上記半導体チップ製造処理におけるステップS3において行われる処理である。
図17を参照して、エキスパンド装置100における接触冷却処理について説明する。接触冷却処理は、冷気供給部7による冷却とともに行われる冷却ユニット8による冷却を示す処理である。
本実施形態では、以下のような効果を得ることができる。
なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく請求の範囲によって示され、さらに請求の範囲と均等の意味および範囲内でのすべての変更(変形例)が含まれる。
7 冷気供給部
8 冷却ユニット
13 第2制御部(制御部)
63 クランプ部
63a 下側把持部
63b 上側把持部
71a 冷気供給口
72 温度センサ
81 冷却部材
81b ペルチェ素子
91 リング状部材(固定部材)
100 エキスパンド装置
120 凹部
120a 内側面
120b 底面
200 ウエハリング構造
210 ウエハ
220 シート部材
220a 上面
230 リング状部材
230b 内側面
263a 第1スライド移動体(スライド移動体)
263b 第2スライド移動体(スライド移動体)
263c 第3スライド移動体(スライド移動体)
263d 第4スライド移動体(スライド移動体)
263e 内側面
F (凹部の)深さ
L (固定部材の)長さ
Claims (9)
- 分割ラインに沿って分割可能なウエハと、前記ウエハが貼り付けられ、伸縮性を有するシート部材と、前記ウエハを囲んだ状態で前記シート部材に貼り付けられるリング状のリング状部材とを含むウエハリング構造と、
前記リング状部材を把持するクランプ部を含み、前記クランプ部により前記リング状部材を把持した状態で、前記シート部材をエキスパンドさせることによって前記分割ラインに沿って前記ウエハを分割するエキスパンド部と、
前記エキスパンド部により前記シート部材をエキスパンドさせる際、前記シート部材に冷気を供給する冷気供給部とを備え、
前記冷気供給部は、前記クランプ部により前記リング状部材を把持するとともに前記クランプ部よりも上側の空間を密閉せずに開放した状態で、前記クランプ部および前記ウエハリング構造に囲まれた凹部に冷気を供給することにより、冷気を前記凹部に溜めるように構成されている、エキスパンド装置。 - 前記凹部は、
前記クランプ部の内側面および前記リング状部材の内側面と、
前記シート部材の上面からなる底面とを含む、請求項1に記載のエキスパンド装置。 - 前記冷気供給部は、前記クランプ部により前記リング状部材が把持された状態において、前記ウエハよりも上方に配置され、上方から下方に向かって冷気を供給する冷気供給口を含む、請求項1または2に記載のエキスパンド装置。
- 前記冷気供給部は、上下方向に移動可能に構成されており、
前記冷気供給部は、下方向に移動されて前記凹部内の位置に配置された状態で、冷気を前記凹部に供給するように構成されている、請求項1~3のいずれか1項に記載のエキスパンド装置。 - 前記冷気供給部が固定される固定部材をさらに備え、
上下方向において、前記凹部の深さは、前記固定部材の長さよりも大きい、請求項4に記載のエキスパンド装置。 - 前記クランプ部により前記リング状部材が把持された状態において、前記シート部材を下方から冷却可能な冷却ユニットをさらに備え、
前記冷却ユニットは、ペルチェ素子を有し、前記ペルチェ素子により冷却された状態で前記シート部材に下方から接触する冷却部材を含む、請求項1~5のいずれか1項に記載のエキスパンド装置。 - 前記凹部内に冷気を溜めて上方から前記シート部材を冷却する前記冷気供給部による冷却および前記シート部材を下方から冷却する前記冷却ユニットによる冷却の両方の制御を行う制御部をさらに備える、請求項6に記載のエキスパンド装置。
- 前記クランプ部は、
下側から前記リング状部材を支持する下側把持部と、
前記凹部の内側面のうち前記リング状部材よりも上側の部分を構成し、前記リング状部材を上側から押さえる上側把持部とを含む、請求項1~7のいずれか1項に記載のエキスパンド装置。 - 前記上側把持部は、水平方向において前記ウエハ側の内側方向、および、前記ウエハ側とは逆側の外側方向にスライド移動可能な複数のスライド移動体を有する、請求項8に記載のエキスパンド装置。
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JP2002151439A (ja) * | 2000-11-13 | 2002-05-24 | Nec Semiconductors Kyushu Ltd | エキスパンド装置 |
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JP2019029363A (ja) * | 2017-07-25 | 2019-02-21 | 株式会社ディスコ | 接着フィルムの破断方法 |
JP2019186437A (ja) * | 2018-04-12 | 2019-10-24 | 株式会社ディスコ | 拡張方法及び拡張装置 |
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JP2016004832A (ja) * | 2014-06-13 | 2016-01-12 | 株式会社ディスコ | テープ拡張装置 |
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JP2002151439A (ja) * | 2000-11-13 | 2002-05-24 | Nec Semiconductors Kyushu Ltd | エキスパンド装置 |
JP2009277837A (ja) * | 2008-05-14 | 2009-11-26 | Disco Abrasive Syst Ltd | 破断装置 |
JP2015133370A (ja) * | 2014-01-10 | 2015-07-23 | 株式会社ディスコ | 分割装置及び被加工物の分割方法 |
JP2019029363A (ja) * | 2017-07-25 | 2019-02-21 | 株式会社ディスコ | 接着フィルムの破断方法 |
JP2019186437A (ja) * | 2018-04-12 | 2019-10-24 | 株式会社ディスコ | 拡張方法及び拡張装置 |
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