WO2004028816A1 - 電子部品位置合わせ方法及びその装置 - Google Patents
電子部品位置合わせ方法及びその装置 Download PDFInfo
- Publication number
- WO2004028816A1 WO2004028816A1 PCT/JP2003/012520 JP0312520W WO2004028816A1 WO 2004028816 A1 WO2004028816 A1 WO 2004028816A1 JP 0312520 W JP0312520 W JP 0312520W WO 2004028816 A1 WO2004028816 A1 WO 2004028816A1
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- WIPO (PCT)
- Prior art keywords
- electronic component
- alignment
- mark
- holes
- positioning
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14024—Assembling head parts
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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
- H01L21/67144—Apparatus for mounting on conductive members, e.g. leadframes or conductors on insulating substrates
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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
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67259—Position monitoring, e.g. misposition detection or presence detection
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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
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67294—Apparatus for monitoring, sorting or marking using identification means, e.g. labels on substrates or labels on containers
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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
- H01L21/68—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 positioning, orientation or alignment
- H01L21/681—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 positioning, orientation or alignment using optical controlling means
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0812—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
- H05K1/0269—Marks, test patterns or identification means for visual or optical inspection
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
- Y10T29/49131—Assembling to base an electrical component, e.g., capacitor, etc. by utilizing optical sighting device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
- Y10T29/49133—Assembling to base an electrical component, e.g., capacitor, etc. with component orienting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53087—Means to assemble or disassemble with signal, scale, illuminator, or optical viewer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53087—Means to assemble or disassemble with signal, scale, illuminator, or optical viewer
- Y10T29/53091—Means to assemble or disassemble with signal, scale, illuminator, or optical viewer for work-holder for assembly or disassembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53174—Means to fasten electrical component to wiring board, base, or substrate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53174—Means to fasten electrical component to wiring board, base, or substrate
- Y10T29/53178—Chip component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53191—Means to apply vacuum directly to position or hold work part
Definitions
- the present invention relates to a method and an apparatus for positioning an electronic component in which two electronic components are aligned using a mark means for alignment formed on the two electronic components.
- FIGS. Conventionally, a bonding apparatus that aligns and assembles a chip member on a plate-like or sheet-like substrate and assembles it, as shown in FIGS.
- a head moving means 5 which is provided movably up and down along the provided guide part 3 and drives a pressurizing head 4; and a predetermined load is fixed to the head moving means 5 and applied to the pressurizing head 4.
- a recognition device 8 8
- the stage 7 can be moved in the X-axis direction and the Y-axis direction and can be rotated in the 0-direction by an X-axis drive source 12 and a Y-axis drive source 13 and a zero-rotation drive source (not shown).
- the head moving means 5 can be moved in the Z-axis direction by the Z-axis drive source 14.
- the mark recognition device 8 has two cameras 8b and 8c arranged side by side in a horizontal position with the optical axes of the photographing lenses coincident in the camera unit 8a. Then, between the cameras 8b and 8c, the double-sided reflecting mirror 8d, whose both sides are parallel reflecting surfaces, is tilted by 45 degrees.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-92432 (page 4, FIG. 2)
- the head moving means 5 and the pressure head The substrate 9 is mounted on the mounting portion 11 of the stage 7 with the 4 raised to the uppermost position, and the chip member 10 is held on the lower surface of the pressure head 4.
- the mark recognition device 8 advances in the direction of arrow A in FIG. 15 and is inserted between the substrate 9 and the chip member 10. As a result, the mark recognition device 8 can simultaneously recognize the alignment mark of the substrate 9 located below and the alignment mark of the chip member 10 located above.
- the Z-axis drive source 14 is driven to lower the head movable means 5 so that the alignment mark of the chip member 10 can be clearly recognized by the mark recognition device 8. Stop.
- the stage 7 is moved by driving the Y-axis drive source 13 and a rotary drive source (not shown) so that the alignment marks on both the substrate 9 and the chip member 10 are aligned.
- the mark recognition device 8 is moved in the direction of arrow B in FIG. Then, the pressing means 6 operates to extend the pressing shaft 6a and push down the pressure head 4, so that the chip member 10 is brought into close contact with the substrate 9 and assembled and joined.
- FIG. 17A and FIG. 17B in FIG. 17A, the alignment mark 9a of the substrate 9 and the alignment mark 10a of the chip member 10 are accurately aligned. Even in this case, after the alignment, in FIG. 17B, the moving distance for lowering the chip member 10 in the direction of arrow C until it comes into close contact with the substrate 9 is long.
- a movement error occurs based on the accuracy of the mechanism for lowering the chip member 10, and as shown in FIG. 17B, a deviation ⁇ between the alignment marks 9 a and 10 a between the substrate 9 and the chip member 10. May occur. Therefore, the substrate 9 and the chip member 10 may not be accurately positioned.
- the two cameras 8 b and 8 c had the inclination of the optical axis and the recognition error ⁇ of the two images due to the thickness of the double-sided reflection mirror 8 d, and the like. Therefore, the substrate 9 and the chip member 10 cannot be aligned with high accuracy in some cases. In order to correct all of these errors and perform high-precision alignment of, for example, 1 ⁇ m or less, a precise correction mechanism and complicated mechanism control are required, and the equipment may be expensive. . Disclosure of the invention
- the present invention addresses such a problem, and measures the position of the two electronic components by positioning the mark means for positioning the two electronic components within the same field of view of the mark recognition device, thereby achieving high accuracy.
- An object of the present invention is to provide an electronic component alignment method and an electronic component alignment device that enable accurate alignment.
- an electronic component alignment method includes a first alignment method in which two alignment holes are formed at predetermined positions at predetermined intervals. Holding the electronic component on a cradle, and holding a second electronic component having two alignment marks formed at a predetermined position in accordance with the distance between the two alignment holes in a position adjustment mechanism; In a state where the alignment mark of the second electronic component has been introduced into the alignment hole of the first electronic component, the position is measured in the same field of view of the mark recognition device, and the position of the two is measured. Adjusting the position of the second electronic component with the position adjustment mechanism so that the alignment marks of the second electronic component have a predetermined positional relationship within the two alignment holes of the first electronic component. It aligns both parts.
- the first electronic component having two alignment holes formed at predetermined positions and separated by a predetermined distance is held on the receiving table, and the first electronic component having a predetermined position is formed at a predetermined position with the distance between the two alignment holes.
- a state in which the second electronic component having the two alignment marks formed in alignment with each other is held by the position adjustment mechanism, and the alignment mark of the second electronic component is introduced into the alignment hole of the first electronic component.
- the positions of the two electronic components are measured within the same field of view of the mark recognition device so that the alignment marks of the second electronic component have a predetermined positional relationship in the two alignment holes of the first electronic component. Further, the position of the second electronic component can be adjusted by the position adjusting mechanism.
- the mark recognition device is not positioned between the two electronic components to be aligned, and the amount of movement of the position adjustment of the second electronic component is small, and the two electronic components are within the same field of view of the mark recognition device. Since a mark image of the part is obtained and the positions of the two parts are measured and there is no error in image recognition, the two parts can be positioned with high accuracy.
- first electronic component and the second electronic component are arranged such that the respective alignment holes and the alignment marks are positioned and held within the focal depth of the lens of the mark recognition device. Alignment hole for first electronic component It is possible to simultaneously focus on both the and the alignment mark of the second electronic component.
- the position adjustment mechanism is capable of moving the second electronic component in the X direction, the Y direction, and the rotation in the horizontal plane, and further, the entire position adjustment mechanism is capable of moving in the Z direction in the vertical plane.
- the mark recognition device described above has two cameras provided in accordance with the interval between the two alignment holes of the first electronic component, so that the position of the two alignment holes can be measured at once. In this way, the two electronic components can be positioned quickly.
- the mark recognition device described above has a single camera that can move left and right in accordance with the distance between the two alignment holes of the first electronic component, thereby simplifying and reducing the size of the mark recognition device. It will be.
- the mark recognition device is provided with the same two lenses arranged in accordance with the distance between the two alignment holes of the first electronic component, and on the same optical path length from the two lenses.
- the provision of one camera eliminates the need for a left-right movement mechanism in one camera, making the mark recognition device simpler and smaller.
- an electronic component positioning device includes a receiving base for holding a first electronic component having two alignment holes at predetermined positions separated by a predetermined distance, and is disposed to face the receiving base.
- a position adjustment mechanism that holds a second electronic component having two alignment marks formed at a predetermined position so as to match the distance between the two alignment holes, and a position adjustment mechanism that is disposed at a rear side of the cradle;
- the alignment mark of the second electronic component introduced into the alignment hole of the first electronic component the two electronic components are captured in the same field of view, and the position measurement of the two is performed.
- an alignment mark of the second electronic component in the two alignment holes of the first electronic component in a predetermined positional relationship using the image measured by the mark recognition device. As described above, the position of the second electronic component is adjusted by the position adjustment mechanism, and the two components are aligned.
- the mark recognizing device is not located between the two electronic components to be aligned, the amount of movement of the position adjustment of the second electronic component is small, and the position of the mark recognizing device is within the same field of view.
- the mark images of the two electronic components are obtained and the positions of the two electronic components are measured. Since there is no image recognition error or the like, the two components can be positioned with high accuracy.
- first electronic component and the second electronic component are arranged such that the respective alignment holes and the alignment marks are located and held within the focal depth of the lens of the mark recognition device.
- both the alignment holes of the first electronic component and the alignment marks of the second electronic component can be simultaneously focused and focused.
- the position adjustment mechanism is capable of moving the second electronic component in the X-direction, the Y-direction, and the rotation in the horizontal plane, and the entire position adjustment mechanism is capable of moving in the Z-direction in the vertical plane.
- the mark recognition device includes two cameras in accordance with the distance between the two positioning holes of the first electronic component, so that the position of the two positioning holes can be measured at once.
- the two electronic components can be quickly aligned.
- the mark recognition device includes one camera that can move left and right according to the distance between the two alignment holes of the first electronic component, The mark recognition device can be simplified and miniaturized.
- the mark recognition device is provided with the same two lenses arranged in accordance with the distance between the two alignment holes of the first electronic component, and on the same optical path length from the two lenses. Providing one camera eliminates the need for a left-right movement mechanism in one camera, making the mark recognition device even simpler and smaller.
- a positioning method comprises: a first electronic component having a pair of positioning holes formed at predetermined positions at predetermined intervals, and a plurality of positioning components having different sizes. Arranging a polygonal alignment mark in which a marking portion is concentrically arranged and a second electronic component formed so as to match the alignment hole; and the alignment mark inside the alignment hole.
- the first and second positions are captured so that the entire image of the alignment mark having a large alignment mark is captured inside the alignment hole by using the small alignment mark.
- a plurality of positions of different sizes arranged concentrically in the alignment holes of the first electronic component and in the alignment marks of the second electronic component which are arranged opposite to each other.
- the entire image of the small alignment mark is captured, and the small and large alignment marks are used to roughly adjust the alignment of the first and second electronic components.
- the position adjustment amount for aligning the alignment mark with the center of the alignment hole is measured at the alignment mark portion or both large and small alignment mark portions, and the second electronic component is adjusted by the position correction amount.
- the first and second electronic components are relatively adjusted to fine-tune and align the first and second electronic components. As a result, the preliminary positioning accuracy can be relaxed, and the first and second electronic components can be positioned with high accuracy.
- the digital image captured by the mark recognition device has the same edge regardless of the orientation of the alignment marks, and the image recognition accuracy is improved.
- the first electronic component is used as a nozzle member of a print head of an image forming apparatus
- the second electronic component is used as a chip of the print head.
- an alignment mark can be formed outside the circuit formation area. Therefore, an alignment mark can be formed with high precision using a semiconductor process.
- FIG. 1 is a schematic view showing an embodiment of an electronic component positioning method according to the present invention.
- FIG. 2A and FIG. 2B are plan views showing a state where alignment holes of the first electronic component and alignment marks of the second electronic component are formed.
- Figure 3 shows the alignment mark of the second electronic component inserted into the alignment hole of the first electronic component, and is captured in the same field of view of the mark recognition device.
- FIG. 4 is an explanatory cross-sectional view showing a state in which the position measurement of both is performed.
- FIG. 4 is an explanatory diagram showing an image of the position measurement of the mark means captured in the same field of view by the camera of the mark recognition device.
- FIGS. 5A and 5B are explanatory diagrams showing a state in which the position of the second electronic component is adjusted using an image of the position measurement by the camera of the mark recognition device.
- FIG. 6 is a side view showing an embodiment of an electronic component positioning device according to the present invention.
- FIG. 7 is a perspective view showing a specific structure of the position adjusting mechanism.
- FIG. 8 is an explanatory view of a main part showing, in an enlarged manner, a pedestal of the first electronic component, a mark recognition device and the like.
- FIG. 9 is an enlarged sectional view of a main part showing another embodiment of the mark recognition device.
- FIG. 10 is a plan view showing the shape of an alignment mark of a second electronic component according to another embodiment.
- FIG. 11 is a schematic cross-sectional view of a chip for explaining a position where an alignment mark is formed.
- FIG. 12 is a flowchart illustrating a procedure for aligning the alignment mark with the alignment hole.
- FIGS. 13A to 13C are explanatory diagrams showing images of the alignment holes and alignment marks recognized by the mark recognition device in the procedure of FIG.
- FIG. 14 is a side view showing a conventional bonding apparatus.
- FIG. 15 is a front view of FIG.
- FIG. 16 is an explanatory diagram showing a mark recognition device of a conventional bonding device.
- FIGS. 17A and 17B are explanatory diagrams showing examples of occurrence of misalignment of alignment marks of a substrate and a chip member in a conventional bonding apparatus. It is. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a schematic view showing an embodiment of an electronic component positioning method according to the present invention.
- This method of aligning electronic components enables high-precision alignment by positioning the mark means for aligning two electronic components within the same field of view of the mark recognition device and measuring the positions of the two. As shown in Fig. 1, this is performed using a device having a receiving stand 21 for one electronic component, a position adjusting mechanism 22 for the other electronic component, and a mark recognition device 23. Is done.
- Reference numeral 24 denotes a bonding tool for joining two electronic components.
- the first electronic component 25 is held on the receiving table 21, and the second electronic component 26 is held on the position adjustment mechanism 22.
- the first electronic component 25 is, for example, a substrate such as a printed circuit board or a glass substrate, or a nozzle member used for a print head of an image forming apparatus such as an ink jet printer.
- two positioning holes 27a and 27b are formed at predetermined positions of the sheet-like member at a predetermined distance p.
- the second electronic component 26 is, for example, an individual bare chip cut out from a semiconductor wafer, or an IC used for a print head of an image forming apparatus such as an ink jet printer (hereinafter simply referred to as an IC). 2B), as shown in FIG. 2B, two alignment marks are provided at predetermined positions on the chip at a predetermined interval q that matches the interval p between the two alignment holes 27a and 27b. 28 a and 28 b are formed.
- the alignment holes 27a and 27b are 5 mm in diameter. It is a circular hole of about 0 to 60 m.
- Reference numeral 29 denotes a first electronic component 25, for example, a nozzle having a diameter of about 17 ⁇ m formed in a nozzle member, and the nozzle 29 has a diameter of, for example, about 42 ⁇ m. It is made of pitch.
- the alignment marks 28 a and 28 b are circular marks having a diameter of about 20 ⁇ m.
- Reference numeral 30 denotes an approximately 2 O / im square heater formed as a second electronic component 26, for example, on a print head chip. As with 29, it is formed with a pitch of about 42 ⁇ m.
- the first electronic component 25 of the sheet-like member is adhered to, for example, a frame or the like, and is sucked and held by an air suction hole (not shown) provided in the receiving table 21. ing.
- an air suction hole not shown
- two alignment holes 27 a of the first electronic component 25 are provided.
- 27b, two see-through holes 31a, 3lb are formed.
- the see-through holes 31a and 31b are, for example, circular holes having a diameter of about 400 m so that the alignment holes 27a and 27 can be seen sufficiently. Further, a heating means (not shown) such as a heater is built in the pedestal 21, so that the portion of the first electronic component 25 in contact with the pedestal 21 can be heated. ing.
- the second electronic component 26 is held by the position adjusting mechanism 22 via the bonding tool 24.
- air is sucked and held by air suction holes (not shown) provided in the bonding tool 24.
- the bonding tool 24 moves up and down in the Z direction together with the position adjustment mechanism 22 to form a chip delivery gear r on the lower surface side of the bonding tool 24.
- the above bonding tool 24 includes a heater and the like.
- the heating means (not shown) is built in so that the second electronic component 26 contacting the bonding tool 24 can be heated.
- a dry film resist 32 serving as an adhesive is formed on the lower surface of the second electronic component 26 held by the bonding tool 24.
- a dry film resist 32 serving as an adhesive is formed in the dry film register 32.
- two see-through holes 33a and 33b are provided at positions corresponding to the two alignment marks 28a and 28b of the second electronic component 26. Is formed.
- the position adjustment mechanism 22 that holds the second electronic component 26 via the bonding tool 24 moves the second electronic component 26 in the horizontal plane in the X and Y directions.
- the first electronic component 25 and the second electronic component 26 are joined together so that the first electronic component 25 and the second electronic component 26 can be joined together. Has become.
- an alignment gap s (for example, 70 ° C.) for aligning the two electronic components is provided between the upper surface of the pedestal 21 and the lower surface of the second electronic component 26. ⁇ 130 tm).
- the alignment marks 28 a and 28 of the second electronic component 26 are placed in the alignment holes 27 a and 27 b ⁇ of the first electronic component 25.
- the position of the mark recognition device 23 is measured within the same field of view.
- the mark recognition device 23 includes two cameras 23 a corresponding to the distance between the two alignment holes 27 a and 27 b of the first electronic component 25. , 2 3 b. That is, the cameras 23 a and 23 b are provided corresponding to the positions of the two see-through holes 31 a and 31 b formed in the pedestal 21, respectively. These cameras 23a and 23b are composed of a lens of a predetermined magnification (for example, about 9 times) with coaxial incident light and a video camera or a pixel of a predetermined pixel density (for example, about 1/4 inch and about 400,000 pixels). CC Consists of a D camera.
- the lenses of the force lenses 23a and 23b have a depth of focus of a predetermined distance, and the first electronic component 25 and the second electronic component 26 are respectively
- the alignment holes 27a and 27b and the alignment marks 28a and 28b are held within the above-mentioned depth of focus. From this, the position of the first electronic component 25 is adjusted with the cameras 23 a and 23 b being adjusted to the heights indicated by arrows D and E and approaching the first electronic component 25.
- the holes 27a and 27b and the alignment marks 28a and 28b of the second electronic component 26 can be photographed simultaneously.
- image processing is performed by an image processing device or the like (not shown), and the center positions of the alignment holes 27a and 27b in the two images 34a and 34b are determined.
- the center positions of the alignment marks 28a and 28b are recognized, the center distance Ra between one alignment hole 27a and the alignment mark 28a is calculated, and the other alignment hole is calculated.
- the center distance Rb between 27b and the alignment mark 28b is calculated.
- the position measurement in FIG. 4 shows a state in which the center positions of the alignment holes 27a and 27 and the center positions of the alignment marks 28a and 28b are shifted.
- the second electronic component 2 is inserted into the two alignment holes 27 a and 27 b of the first electronic component 25.
- the position of the second electronic component 26 is adjusted by the position adjustment mechanism 22 so that the 6 alignment marks 28 a and 28 b have a predetermined positional relationship.
- the position adjusting mechanism 22 shown in FIG. 1 is operated, and the second electronic component 26 held by the position adjusting mechanism 22 via the bonding tool 24 is connected to the center distances Ra and Rb.
- the predetermined interval P between the two alignment holes 27a and 27b of the first electronic component 25 and the predetermined interval q between the alignment marks 28a and 28b of the second electronic component 26 are the same in FIGS. 2A and 2B, but in reality, dimensional errors occur due to processing errors or temperature conditions, and the centers of the two may not be able to be matched. In such a case, the two alignment marks 28 a and 28 b are symmetrical on the center line 35 connecting the two alignment holes 27 a and 27 b in FIG. Thus, the position of the second electronic component 26 may be adjusted.
- FIG. 5A shows a case where p> q due to the dimensional error.
- the center shift amount c between the alignment hole 27 a on the center line 35 and the alignment mark 28 a on the center line 35 and the right camera 23 Move the second electronic component 26 in the Y direction and rotate it 0 times so that the center deviation d between the alignment hole 27 b on the image 34 b and the alignment mark 28 b becomes the same.
- the two parts may be moved in the X direction and adjusted so that the two alignment marks 28 a and 28 b are symmetrically positioned to align both parts.
- Fig. 5B shows the case where p ⁇ q due to the above dimensional error.
- the image of the left camera 23 on the center line 35 is taken by the left camera 23a, the center misalignment e between the alignment hole 27a on the alignment mark 27a and the alignment mark 28a, and the right force lens 23
- the second electronic component 26 is moved in the Y direction and rotated by ⁇ so that the center shift amount f between the alignment hole 27 b on the image 34 b and the alignment mark 28 b is equal to
- the two parts may be moved by moving in the X direction and adjusted so that the two alignment marks 28a and 28b are symmetrical.
- the mark recognition is performed in a state where the alignment marks 28a and 28b of the second electronic component 26 are introduced into the alignment holes 27a and 27b of the first electronic component 25.
- the two electronic components 2 are measured in the two alignment holes 27 a and 27 b of the first electronic component 25 by measuring the positions of the two electronic components 23 in the same field of view.
- the mark recognizing device 23 is not located between the two electronic components 25, 26 to be aligned, and the amount of movement of the position adjustment of the second electronic component 26 is small.
- the images of the two electronic components 25 and 26 were obtained within the same field of view of the device 23, and the positions of the two components were measured. Can be positioned with high precision.
- two alignment marks 28a and 28b are symmetrical on the center line 35 connecting the two alignment holes 27a and 27b.
- the present invention is not limited to the method of adjusting the position to be the position, and the two components may be aligned by adjusting the position to another predetermined positional relationship.
- This electronic component positioning device achieves high-precision positioning by positioning the mark means for positioning the two electronic components in the same field of view of the mark recognition device and measuring the positions of the two.
- FIG. 6 it is provided with a receiving stand 21, a position adjusting mechanism 22, a mark recognizing device 23, and a stand 40.
- Reference numeral 25 denotes a first electronic component
- reference numeral 26 denotes a second electronic component.
- the gantry 40 is a base that mounts and supports the main part of the electronic component positioning device of the present invention, and includes a horizontal pedestal member 40a and a vertical support member 40b.
- a vertical guide member 41 is formed on one side surface of the vertical support member 40b.
- the guide member 41 has two movable blocks 42a and 42b. It is provided movably.
- An overhang arm 43 is attached to the upper moving block 42a so as to protrude in the horizontal direction.
- a clamp crimping mechanism 44 for joining two electronic components is attached to the lower moving block 42b.
- two vertical support frames 45, 45 are erected on both sides of the mark recognition device 23 on the horizontal base member 40a.
- a horizontal support frame 46 is stretched at the upper end of 45, and a receiving stand 21 is supported on the upper surface of the horizontal support frame 46 with a heat insulating material 47 interposed therebetween.
- the pedestal 21 holds the first electronic component 25 and has the same configuration as shown in FIG. Therefore, the horizontal support frame 46 and the heat insulating material 47 are provided with through-holes 48 a, 4 b corresponding to the positions of the two see-through holes 31 a, 31 b formed in the receiving table 21, respectively. 8b is drilled.
- the first electronic component 25 held by the receiving table 21 is, for example, a substrate such as a printed circuit board or a glass substrate, or is used for a print head of an image forming apparatus such as an ink jet printer. Nozzle member etc. As shown in FIG. 2A, two positioning holes 27a and 27b are formed at predetermined positions of the sheet-shaped member at a predetermined distance p.
- a position adjustment mechanism 22 is supported on the lower surface of the overhang arm 43 provided vertically movable via a movable block 42 a on one side surface of the vertical support member 40 b as shown in FIG. Have been.
- the position adjusting mechanism 22 holds the second electronic component 26, and is arranged to face the receiving table 21.
- the second electronic component 26 is, for example, an individual bare chip cut out from a semiconductor wafer or an IC used for a print head of an image forming apparatus such as an ink jet printer. As shown in the figure, two alignment marks 28a, 28a at a predetermined distance q matched with the distance p between the two alignment holes 27a, 27b of the first electronic component 25 at predetermined positions of the chip. 28 b is formed.
- the position adjusting mechanism 22 is configured to move the second electronic component 26 in the horizontal direction in the X direction, in the Y direction, and zero rotation, and as shown in FIG. 1 of the plate 4 9 i, the second plate 4 9 2, with a third plate 4 9 3 is fixed, a first slider 5 0 you move in the X direction between them, Y a second slider 5 0 2 moving in the direction, theta and a third slider 5 0 3 is inserted to rotate in the direction, is a mechanism for rotating X direction mobile ⁇ Pi Y-direction moving and theta as a whole I have.
- the position adjusting mechanism 22 is supported on the lower surface side of a projecting arm 43 provided to be vertically movable via a moving block 42a on one side surface of the vertical support member 40b, The whole is movable in the Z direction in a vertical plane, and the first electronic component 25 and the second electronic component 26 are joined.
- a parallel adjustment mechanism 51 and a bonding tool 24 are provided, and air is sucked by an air suction hole (not shown) provided in the bonding tool 24 to hold the second electronic component 26. It is like that.
- a mark recognition device 23 is disposed behind the cradle 21.
- the mark recognition device 23 is provided with a positioning hole 2 for the first electronic component 25.
- the force lenses 23 a and 23 b are provided corresponding to the positions of the two see-through holes 31 a and 31 b formed in the receiving base 21, respectively.
- These cameras 23a and 23b consist of a lens with a predetermined magnification (for example, about 9 times) with coaxial incident light and a video camera or a CCD camera with a predetermined pixel density (for example, about 400,000 pixels).
- the lenses of the power lenses 23a and 23 have a focal depth of a predetermined distance, and the first electronic component 25 and the second electronic component 26 are respectively
- the alignment holes 27a and 27b and the alignment marks 28a and 28b are held within the above-mentioned depth of focus. With this force, the cameras 23a and 23b are adjusted in height as shown by arrows D and E, and are brought close to the first electronic component 25.
- the 5 alignment holes 27a and 27b and the alignment marks 28a and 28b of the second electronic component 26 can be photographed simultaneously.
- a predetermined gap is formed between the end surfaces of the two cameras 23a and 23b and the horizontal support frame 46, and a horizontal gap is formed in the gap.
- Air duct 53 is installed.
- the air duct 53 sucks the air around the cameras 23a and 23b in order to suppress the fluctuation of the captured image caused by the convection of the air due to the heat around the cameras 23a and 23b. It is.
- the suction of the air by the air duct 53 can simultaneously cool the cameras 23a and 23b. Note that, depending on the environmental conditions around the cameras 23a and 23b, a cool air may be blown from the air duct 53.
- This electronic component positioning apparatus basically operates in the same manner as the procedure of the electronic component positioning method described with reference to FIGS. 1 to 5B.
- the first electronic component 25 is held on the receiving table 21 and the second electronic component 26 is held on the position adjustment mechanism 22.
- the axes of the two alignment holes 27a and 27b of the first electronic component 25 and the two alignment marks 2 of the second electronic component 26 are formed.
- the axes of 8a and 28b are substantially coincident with each other, and the alignment mark 28 of the second electronic component 26 is located in the alignment holes 27a and 27b of the first electronic component 25.
- the alignment marks 28 a and 28 b of the second electronic component 26 are introduced into the alignment holes 27 a and 27 b of the first electronic component 25.
- the position of the mark recognition device 23 is measured within the same field of view.
- the lenses of the cameras 23a and 23b have a depth of focus of a predetermined distance, and the first electronic component 25 and the second electronic component 26 are respectively
- the alignment holes 27a and 27b and the alignment marks 28a and 28b are held within the above-mentioned depth of focus.
- one of the alignment holes 27 of the first electronic component 25 is located in the field of view of the left camera 23a.
- An image in which one of the alignment marks 28 a of the second electronic component 26 has been introduced into a is obtained, and the image 34 b of the right camera 23 b is obtained within the field of view of the right camera 23 b.
- An image is obtained in which the other alignment mark 28 b of the second electronic component 26 has been introduced into the other alignment hole 27 b of the first electronic component 25.
- image processing is performed by an image processing device or the like (not shown), and the center positions of the alignment holes 27a and 27b in the two images 34a and 34b are determined. , The center positions of the alignment marks 28a and 28b are recognized, the center distance Ra between one alignment hole 27a and the alignment mark 28a is calculated, and the other alignment is performed. The center distance Rb between the hole 27b and the alignment mark 28b is calculated.
- the position measurement in FIG. 4 shows a state where the center positions of the alignment holes 27a and 27b and the center positions of the alignment marks 28a and 28b are shifted.
- the alignment marks 28a and 28b of the second electronic component 26 are predetermined within the two alignment holes 27a and 27b of the first electronic component 25.
- the position of the second electronic component 26 is adjusted by the position adjusting mechanism 22 so as to satisfy the following positional relationship.
- the position adjusting mechanism 22 shown in FIGS. Similarly to the method described above in the example, the second electronic component 26 held by the position adjusting mechanism 22 via the bonding tool 24 is appropriately moved in the X direction according to the center-to-center distance Ra Rb. Move in the Y direction and make 0 rotation to ideally align the center of one alignment hole 27a with the alignment mark 28a and align the other alignment hole 27b with the alignment hole 27b. Align the parts with the center of mark 28 b and.
- the mark recognition device 23 includes two cameras 23a and 23b as shown in FIGS. 1, 3 and 8, but the present invention
- the distance between the two alignment holes 27 a and 27 b of the first electronic component 25 is not limited to this!
- the camera may be equipped with a single camera that can move left and right in accordance with).
- the mark recognizing device 23 includes two identical holes arranged at intervals between two alignment holes 27 a and 27 b of the first electronic component 25. Lenses 54a, 54b and the above two lenses 54a, 5
- one camera 55 provided on the same optical path length may be provided.
- the two lenses 54a and 54b serve as objective lenses for photographing the two alignment holes 27a and 27b and the two alignment marks 28a and 28b (not shown). With the same depth of focus.
- another lens 56 serving as an imaging lens is provided Immediately before the camera 55.
- the two lenses 54a, 54b and the other lens 56 are forked with a common base. It is mounted inside a shaped lens barrel 57.
- the first half mirror 58 a and the total reflection mirror 59 and the second half mirror are arranged on the optical axis from the first lens 54 a to the camera 55.
- 5 8b is arranged on the optical axis from the second lens 5 4b to the camera 55.
- a first illumination lamp 60a is provided at the bottom of the lens barrel 57a on the first lens 54a side of the bifurcated lens barrel 57, and a second lens 5a is provided.
- a second illumination light 60b is provided at the bottom of the lens barrel 57b on the 4b side, and by illuminating the respective illumination lights 60a and 60b, the two alignments are performed.
- the holes 27a and 27b and two alignment marks 28a and 28b (not shown) are illuminated.
- the first or second illumination lamps 60a and 60b are switched and turned on, and only the first lens 54a side is turned on.
- the first or second illumination lamps 60a and 60b are switched and turned on, and only the first lens 54a side is turned on.
- the position measurement of both the 27b and the other alignment mark 28b can be performed within the same field of view.
- the first and second illumination lamps 60a and 60b are simultaneously turned on, and the left and right images taken through the first lens 54a side and the second lens 54b side are overlapped.
- the position of the two alignment holes 27a and 27b and the two alignment marks 28a and 28b is measured. Just do it.
- the first and second illumination lamps 60a and 60b are simultaneously turned on, and the fields of view of the first lens 54a and the second lens 54b are respectively masked in half.
- the left and right images are captured, and the left and right images are separated and processed using an image in which the captured left and right images overlap.
- the position of the alignment holes 27a and 27 and the two alignment marks 28a and 28 may be measured.
- the two alignment holes 27 a and 27 b of the first electronic component 25 and the alignment marks 28 a and 28 b of the second electronic component 26 are described.
- the plane shape is circular in FIGS. 2B and 4, but any other shape may be used as long as its position can be measured and the center can be easily obtained.
- the first electronic component 25 and the second electronic component 26 are not limited to the substrate and the chip, but may be other appropriate electronic components.
- FIG. 10 is a plan view showing the shape of an alignment mark according to another embodiment. Note that the same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.
- the alignment marks 28a and 28b are concentrically arranged in two large and small circles with an outer diameter of about 30 ⁇ m and an inner diameter of about 15 ⁇ m.
- a small circle S is formed by etching the center of a large circle L formed of a thin film of aluminum.
- a great circle L indicates a large alignment mark portion among polygonal alignment marks in which a plurality of alignment mark portions having different sizes are concentrically arranged, and a small circle S indicates the above alignment mark.
- the small alignment indicator is shown.
- the alignment marks 28 a and 28 b are, as shown in FIG. 11, specifically, a metal oxide semiconductor (MOS) transistor 72 on a silicon substrate 71.
- a power supply wiring pattern 76 and a ground wiring pattern 7 are formed on the surface layer of a chip formed by sequentially laminating a first-layer wiring pattern 74 and a heater 30 via an interlayer insulating film 75. 7, and the wiring pattern for connecting the MOS type dry purer transistor 73 to the heater 30 It is formed by etching a thin aluminum film outside the channel forming region.
- MOS metal oxide semiconductor
- the alignment marks 28a and 28b are double circles of the large circle L and the small circle S for the following reasons.
- the resolution of image processing has a positive correlation with the perimeter of the recognized image. Therefore, the great circle L having a longer perimeter has the advantage that the positioning accuracy is higher.
- the alignment marks 28a and 28b become large in the preliminary positioning stage in which the first electronic component 25 and the second electronic component 26 are respectively mounted at predetermined positions. The probability that the entire image of the circle L is caught inside the alignment holes 27a and 27b is low, and the accuracy required for preliminary positioning is severe.
- a small circle S with a short perimeter has low image processing resolution and low positioning accuracy, but the small circular shape makes the whole image of the small circle S in the preliminary positioning stage a positioning hole.
- 27b has the advantage of high probability of being trapped inside. Therefore, a double circle was created by taking advantage of the great circle L and the small circle S.
- the alignment holes 27a and 27b are ⁇ 60 / ⁇ , and the alignment mark is formed by a single circle of ⁇ 20 ⁇ m
- the accuracy required for the above is within 20 ⁇ within the distance between the centers of the alignment holes 27 a and 27 b and the alignment mark.
- the image processing accuracy at this time is considered to be proportional to the square root of the perimeter of each mark means, and the image processing accuracy ratio in the above case is expected to be 13.7: 7.9.
- the pre-positioning accuracy is as follows.
- the distance between the centers of the small circles S of 8a and 28b and the alignment holes 27a and 27b is within ⁇ 22.5 m, which is smaller than when the above-mentioned alignment mark is formed by a single circle. Relaxed.
- the image processing accuracy is determined by the ratio of the square root of the perimeter of the great circle L of the alignment marks 28a and 28b to the alignment holes 27a and 27b. 13.7: 11.9, and the alignment accuracy of the alignment holes 27a and 27b and the alignment marks 28a and 28b is greatly improved.
- the alignment marks 28a and 28b are formed in a double circle. Images can be captured with high probability.
- the small circle S is used to roughly adjust the entire image of the great circle L so that it is captured inside the alignment holes 27a and 27b. As a result, the entire image of the great circle L is captured.
- the alignment marks 28a and 28 are aligned with the alignment holes 27a and 27b by making fine adjustments using the large circle L or the large and small circles L and S. Can be performed with high accuracy.
- the alignment holes 27a and 27b of the first electronic component 25 and the alignment marks 28a and 28b of the second electronic component 26 are formed. When both images are recognized, the positioning of the alignment holes 27a and 27b and the alignment marks 28a and 28b is performed according to the processing procedure shown in FIG.
- step S1 the images of the alignment holes 27a and 27b and the alignment marks 28a and 28b are captured by the mark recognition device 23. Then, in step S2, a small circle S of the alignment marks 28a and 28b is searched inside the alignment holes 27a and 27b. Here, the mounting accuracy of the second electronic component 26 to the bonding tool 24 is poor. The alignment marks 28 a and 28 b are missing inside the alignment holes 27 a and 27 b due to the lack of alignment marks 28 a and 28 b. If the entire image of the small circle S is not recognized, a processing error (step S3) occurs and the alignment step ends. Then, the position adjusting mechanism 22 shown in FIG. 1 rises, and as shown in FIG.
- a chip transfer gap r is formed on the lower surface side of the bonding tool 24 to be replaced with a new second electronic component 26.
- the search for the small circle S is not an automatic search as described above, but may be performed manually while visually observing the image of the small circle S inside the alignment holes 27a and 27b. Les ,.
- step S4 the process proceeds to step S4, and the positioning is performed based on the image of the small circle S.
- the position correction amount of the small circle S with respect to the center positions of the holes 27a and 27b is measured.
- step S5 the great circle L of the alignment marks 28a and 28b is searched.
- Step S 6 the alignment step ends.
- step S5 when the entire image of the great circle L of the alignment marks 28a and 28b is recognized, the process proceeds to step S7, and the recognition is performed. It is determined whether or not the alignment marks 28a and 28b form a double circle.
- the determination of the double circle is made based on whether or not the centers of the great circle L and the small circle S are substantially coincident to form a concentric circle.
- step S7 If it is determined in step S7 that the circles are not double circles, that is, as described above, the center positions of the large circle L and the small circle S are shifted due to the formation error of the alignment marks 28a and 28b. Then, a processing error (step S8) occurs, the alignment step ends, and a new second electronic component 26 is replaced in the same manner as described above.
- step S7 if it is determined in step S7 that the image-recognized alignment marks 28a and 28b are double circles, the process proceeds to step S9 and the alignment holes 27a and 2b are set.
- the distance between the centers of 7b and the alignment marks 28a and 28b is measured to determine the position correction amount.
- the position correction amount is a value measured based on the great circle L of the alignment marks 28a and 28b, or an average value of the respective correction amounts based on the great circle L and the small circle S.
- the large circle L and small circle S are proportionally divided and weighted according to their proportions.
- the second electronic component 26 When the position correction amount is measured, the second electronic component 26 is moved or rotated 0 times in the X and Y directions by driving the position adjustment mechanism 22, and the alignment marks 28 a, 28 b Is drawn in the direction of arrow B toward the center O of the alignment holes 27a and 27b (see Fig. 13B).
- the first and second electronic components 25 and 26 are finely adjusted so that the center positions of the alignment holes 27a and 27b and the alignment marks 28a and 28b coincide. (See Figure 13C). Note that due to the formation error of each mark means and the difference in thermal expansion between the two electronic components, etc. If the distance p between the alignment holes 27a and 27b shown in Fig. 2B and the distance q between the alignment marks 28a and 28b do not match, the alignment holes 27a and 27 Alignment marks b and alignment marks 28a and 28b are positioned symmetrically on the center line connecting holes 27a and 27b.
- step S10 the alignment holes 27a, 27b and the alignment mark 28 are set. It is determined whether or not the center displacement of a and 28b is within the specified value. Here, if the amount of displacement between the two is within the specified value, the alignment ends (step S11). If the amount of displacement between the two is not within the specified value, steps S1 to S10 are repeated to perform positioning.
- the position adjusting mechanism 22 shown in FIG. 1 is slowly lowered, and the first electronic component 25 and the second electronic component 26 are assembled. Then, the heating unit provided in the receiving table 21 and the bonding tool 24 is heated, and the first electronic component 2 is passed through the dry film register 32 provided on the joint surface of the second electronic component 26. 5 and the second electronic component 26 are joined.
- the alignment marks 28 a and 28 are formed as large and small double circles, so that the first electronic component 25 and the second electronic component 26 are different from each other.
- the entire image of the small circle S of the alignment marks 28a and 28b can be easily captured inside the alignment holes 27a and 27b, and the preliminary positioning accuracy can be reduced. Therefore, the position correction amount is measured using the small circle S captured inside the alignment holes 27a and 27b, and the alignment marks 28a and 28b are aligned with the alignment holes 27a and 2b. 7b, the entire image of the great circle L of the alignment marks 28a and 28b is aligned with the alignment holes 27a and 27b. 27 b can be easily pulled inside.
- the first and second electronic components 25, 26 are measured by measuring the correction amount and finely adjusting the alignment marks 28a, 28b with respect to the alignment holes 27a, 27b. Positioning can be performed with high accuracy.
- the alignment marks 28a and 28b are formed as double circles, even if dust is mistaken for a small circle S, a large circle L cannot be found around the small circle S. Can correct the misidentification, and can improve the recognition accuracy of the alignment mark.
- alignment marks 28a and 28b are not limited to the double circles described above, and three or more circles may be arranged concentrically. Further, the alignment holes 27a and 27b and the alignment marks 28a and 28b are not limited to a circular shape, but may be a square shape or a triangular shape. However, these mark means are more preferably circular in that the edge noise of the digital image captured by the mark recognition device 23 is the same regardless of the orientation. Industrial applicability
- the present invention can be used for a bonding apparatus that aligns and assembles a chip member with a plate-like or sheet-like substrate.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP03748624A EP1547780A4 (en) | 2002-09-30 | 2003-09-30 | METHOD AND DEVICE FOR POSITIONING ELECTRONIC COMPONENTS |
US10/495,905 US7251883B2 (en) | 2002-09-30 | 2003-09-30 | Electronic-component alignment method and apparatus therefor |
KR1020047008113A KR101051498B1 (ko) | 2002-09-30 | 2003-09-30 | 전자 부품 위치 맞춤 방법 및 그 장치 |
US11/420,245 US7594319B2 (en) | 2002-09-30 | 2006-05-25 | Electronic-component alignment method |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2002285992A JP3651465B2 (ja) | 2002-09-30 | 2002-09-30 | 電子部品位置合わせ方法 |
JP2002-285992 | 2002-09-30 | ||
JP2002-290369 | 2002-10-02 | ||
JP2002290369A JP4048897B2 (ja) | 2002-10-02 | 2002-10-02 | 電子部品位置合わせ方法及びその装置 |
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US10495905 A-371-Of-International | 2003-09-30 | ||
US11/420,245 Division US7594319B2 (en) | 2002-09-30 | 2006-05-25 | Electronic-component alignment method |
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WO2004028816A1 true WO2004028816A1 (ja) | 2004-04-08 |
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US (2) | US7251883B2 (ja) |
EP (1) | EP1547780A4 (ja) |
KR (1) | KR101051498B1 (ja) |
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Also Published As
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US7251883B2 (en) | 2007-08-07 |
US20050071990A1 (en) | 2005-04-07 |
KR20050069923A (ko) | 2005-07-05 |
EP1547780A1 (en) | 2005-06-29 |
KR101051498B1 (ko) | 2011-07-22 |
US20060218781A1 (en) | 2006-10-05 |
CN1610614A (zh) | 2005-04-27 |
US7594319B2 (en) | 2009-09-29 |
EP1547780A4 (en) | 2012-01-25 |
CN1330494C (zh) | 2007-08-08 |
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