WO2005125181A1 - 光学モジュールの製造方法及び組立装置 - Google Patents
光学モジュールの製造方法及び組立装置 Download PDFInfo
- Publication number
- WO2005125181A1 WO2005125181A1 PCT/JP2004/008354 JP2004008354W WO2005125181A1 WO 2005125181 A1 WO2005125181 A1 WO 2005125181A1 JP 2004008354 W JP2004008354 W JP 2004008354W WO 2005125181 A1 WO2005125181 A1 WO 2005125181A1
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- WIPO (PCT)
- Prior art keywords
- chuck
- lens
- wiring board
- frame
- light
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14618—Containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/93—Batch processes
- H01L24/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L24/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0232—Optical elements or arrangements associated with the device
- H01L31/02325—Optical elements or arrangements associated with the device the optical elements not being integrated nor being directly associated with the device
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
- H01L2924/191—Disposition
- H01L2924/19101—Disposition of discrete passive components
- H01L2924/19105—Disposition of discrete passive components in a side-by-side arrangement on a common die mounting substrate
Definitions
- the present invention relates to a manufacturing method and an assembling apparatus for an optical module, and for example, relates to a technology effective when applied to the manufacture of an optical module (camera module, solid-state imaging device) mounted on a mobile phone, a video camera, or the like.
- an optical module camera module, solid-state imaging device
- Camera modules are mounted on mobile phones, video cameras, and the like.
- the camera module converts the light (optical signal) condensed by an imaging lens (convex optical lens) onto an image capture device (solid-state imaging device), CMOS sensor, CCD sensor, or other image sensor mounted on a substrate.
- This is a device that captures and converts this optical signal into an electric signal according to the arrangement of pixels to obtain a predetermined image.
- the solid-state imaging device described in JP-A-2003-32557 has a structure in which a lens is held between a lens holder and a lens cap attached to the lens holder.
- a projection (locking portion) serving as a positioning means is provided at the lower end of the lens holder at three places, and this projection is fitted to a fitting hole (locking portion) of the circuit board on which the solid-state imaging device is mounted. It has a structure to import. This structure does not allow fine adjustment of the circuit board in the direction perpendicular to the optical axis of the lens (see Patent Document 1).
- a light receiving module including a light receiving element in which a light receiving portion in which pixels for performing photoelectric conversion are arranged is formed using portable information.
- an optical image is A lens module including a lens to be imaged is fixed to a circuit board.
- the fixing is performed by inserting a key-shaped claw provided on the mounting portion of the lens module into the mounting hole of the sub-substrate fixed to the circuit board and engaging with the lower surface. Further, as another fixing means, it is fixed using screws.
- the height of the lens module is determined by the color member to be inserted.
- Patent Document 1 JP 2003-32557 A
- Patent Document 2 Japanese Patent Application Laid-Open No. 2002-185826
- One object of the present invention is to provide an optical module capable of improving characteristics and a method for manufacturing the same.
- Another object of the present invention is to provide an optical module and an assembling apparatus thereof capable of improving the production yield.
- Another object of the present invention is to provide an optical module and a method for manufacturing the same, which can reduce the manufacturing cost.
- optical module camera module
- step (e) an adhesive is applied to a bonding surface of the frame, and then the frame held by the chuck is bonded to a second surface of the wiring board with the adhesive.
- step (e) a flexible wiring board having external electrode terminals is connected to the wiring board.
- the optical axis of the lens in the step (i) As one of the methods of measuring the amount of displacement of the optical axis of the lens in the step (i), light is transmitted to the lens of the frame held by the chuck, and the transmitted light is detected by light sensitivity. The position where the light intensity is highest is determined as the optical axis.
- a multi-valued image is obtained from the light intensity information detected by the light sensitivity detector, and then an endless contour line where the arbitrary light intensity of the multi-valued image is the same is obtained on the XY plane.
- a first line segment between contour lines at an arbitrary position along the X direction on the XY plane is selected, and the center position of the first line segment is calculated and calculated.
- a second line segment between contour lines at an arbitrary position along the line is selected, and a center position of the second line segment is calculated and calculated.
- the coordinates of the center are determined by determining the optical axis of the lens.
- the assembling apparatus used to manufacture such an optical module has the following configuration.
- the assembling apparatus is an assembling apparatus that positions and joins a joint (a frame with a lens) to an object to be joined (wiring board).
- a head mounted on the upper surface of the base, a chuck for detachably holding the joined object of the third stage, and a position detection camera arranged at a predetermined distance from the chuck and capable of detecting the stage;
- a robot that moves between the stages by three-dimensionally controlling the movement of the mounting head unit;
- a control unit for controlling the respective units
- the position detection camera detects a position shift of the workpiece on the first stage and a position shift of a light sensitivity detection unit of the second stage,
- the light sensitivity detection unit detects a positional shift of the bonding unit held by the chuck that has been positioned and stopped on the second stage
- the control unit is configured to correct the predetermined distance of the mounting head unit based on the positional shift of the workpiece, the light sensitivity detection unit, and the bonding unit.
- the joint portion becomes a frame body to which a lens is attached, and light passing through the lens has a structure penetrating vertically above and below the joint portion.
- the chuck is detachably attached to the outer periphery of the cylindrical body at the lower end side, and optically emits light emitted from a light emitting unit toward the light sensitivity detecting unit from a lower surface of the cylindrical body.
- the light sensitivity detection unit is configured to detect light transmitted through the lens
- the lens with respect to the position of the chuck, which is positioned and stopped on the second stage The optical axis position shift is determined from the position where the light intensity received by the light sensitivity detector is high.
- FIG. 1 is a schematic view showing some steps of manufacturing an optical module (camera module) according to Embodiment 1 of the present invention.
- FIG. 2 is a plan view in which a part of the camera module is omitted.
- FIG. 3 is a cross-sectional view taken along the line XX of FIG. 2.
- FIG. 4 is a flowchart showing a manufacturing process of the camera module.
- FIG. 5 is a plan view showing a first surface of a wiring motherboard having a plurality of product forming parts used in the manufacture of the camera module.
- FIG. 6 is a plan view showing a second surface of the wiring motherboard.
- FIG. 7 is a cross-sectional view showing a part of the wiring motherboard in which a chip component and a semiconductor chip as first electronic components are mounted on a first surface of each of the product forming sections.
- FIG. 8 is a cross-sectional view showing a part of the wiring mother board in which the semiconductor chip and the wiring mother board are connected by bonding wires.
- FIG. 9 is a cross-sectional view showing a part of the wiring mother board in a state where a resin layer is collectively provided on a first surface of the wiring mother board to cover the first electronic component.
- FIG. 10 is a cross-sectional view showing a part of the wiring motherboard in which a cutting groove is formed from the surface of the resin layer to the surface of the wiring motherboard.
- FIG. 11 is a plan view of a wiring motherboard provided with the cutting grooves.
- FIG. 12 is a cross-sectional view showing a part of the wiring motherboard on which the second electronic component forming the image sensor is mounted on the second surface of each product forming unit.
- FIG. 13 is a cross-sectional view showing a part of the wiring motherboard in which the second electronic component and the wiring motherboard are connected by bonding wires.
- FIG. 14 is a cross-sectional view showing a state in which the wiring motherboard is divided for each product forming portion to form individual pieces (objects to be bonded).
- FIG. 15 is a front view of a camera module in which a frame with a lens is joined to the individual pieces (objects to be joined).
- FIG. 16 is a front view showing a state in which a flexible wiring board is connected to the wiring board of the camera module.
- FIG. 17 is a flow chart showing an assembling method of joining a frame with a lens to the individual pieces (objects to be joined).
- FIG. 18 is a front view of the assembling apparatus according to the first embodiment.
- FIG. 19 is a plan view of the assembling apparatus.
- FIG. 20 is a plan view of the assembling apparatus showing a state in which a position shift of the light sensitivity detection unit arranged on the second stage is detected by a position detection force camera.
- FIG. 21 is a plan view of the assembling apparatus, showing a state in which the optical sensitivity detection unit detects the displacement of the optical axis of the lens of the frame held by the chuck with respect to the chuck positioned on the second stage. It is.
- FIG. 22 is a schematic diagram showing a method for determining a displacement of the optical axis of the lens.
- FIG. 23 is a schematic view showing another method for obtaining the displacement of the optical axis of the lens.
- FIG. 24 shows the bonding of the frame held by the chuck to the wiring board on the first stage. It is a top view of the assembling apparatus which shows a state.
- FIG. 25 is a schematic view showing a method for manufacturing a camera module according to Embodiment 2 of the present invention.
- FIG. 26 is a sectional view of a camera module according to Embodiment 3 of the present invention. Explanation of reference numerals
- FIGS. 1 to 24 are diagrams relating to the manufacture of the optical module of the present embodiment, specifically, the manufacture of a camera module.
- 2 and 3 are views showing the structure of the camera module
- FIGS. 1 and 4 to 24 are views relating to a method of manufacturing the camera module.
- the camera module of the first embodiment for example, a mobile phone, a TV phone, a PC camera, a PDA
- Personal Digital Assistants Personal Digital Assistants
- optical mice optical mice
- door phones surveillance cameras
- fingerprint recognition devices and toys.
- CMOS Complementary Metal Oxide Semiconductor
- the camera module 1 has a structure shown in Figs. 1 and 2.
- FIG. 2 is a plan view of the CMOS sensor type camera module 1 of the first embodiment
- FIG. 3 is a cross-sectional view taken along the line XX of FIG.
- the camera module 1 includes a wiring board 2 and a sealing body 3 formed over the entire first surface 2 a serving as a lower surface of the wiring board 2. And a cylindrical frame 4 fixed to the second surface 2b serving as the upper surface of the wiring board 2, and a lens 6 which can be seen through a circular window (light receiving window) 5 provided at the center of the upper surface of the frame. And a flexible wiring board 8 having an inner end connected to the second surface 2b of the wiring board 2 separated from the frame 4 by a joining member 7.
- the wiring board 2 is made of, for example, a four-layer printed wiring board using glass epoxy resin as an insulating material.
- the wiring board 2 has a first surface 2a and a second surface 2b opposite to the first surface 2a, and the first surface 2a has system components mounted thereon.
- the second surface 2b has an optical system component mounting surface on which optical system components are mounted.
- the first electronic component is mounted on the system component mounting surface of the wiring board 2.
- the first electronic component is, for example, a logic semiconductor chip (hereinafter simply referred to as a logic chip) 10, a memory semiconductor chip (hereinafter simply referred to as a memory chip) 11, a chip component 12, and the like.
- the logic chip 10, the memory chip 11, and the chip component 12 are used to process electric signals obtained by a sensor chip, which is an optical system component described later, mounted on the second surface 2b of the wiring board 2, and to process the CMOS image of the sensor chip.
- These are electronic components for building a system that controls the operation of the sensor circuit.
- the logic chip 10 has an arithmetic circuit for digital signal processing such as a DSP (Digital Signal Processor), for example.
- the electrodes (not shown) of the logic chip 10 are electrically connected to the wirings (lands) of the wiring board 2 via the bonding wires 15.
- the memory chip 11 is formed with a nonvolatile memory circuit such as an EEPROM (Electrically Erasable Programmable Read Only Memory).
- An electrode (not shown) of the memory chip 11 is electrically connected to a wiring (land) of the wiring board 2 via a bonding wire 16.
- the bonding wires 15 and 16 are made of, for example, gold (Au).
- Passive elements such as capacitors and resistors are formed on the chip component 12, for example.
- the electrodes at both ends of the chip component 12 are joined and electrically connected to lands (wiring) of the wiring board 2 by, for example, soldering.
- the logic chip 10, the memory chip 11, the chip component 12, the bonding wires 15, 16, and the like on the system component mounting surface are sealed with a sealing body 3.
- the sealing body 3 is made of an insulating thermosetting resin such as an epoxy resin containing a filler.
- a second electronic component is mounted on the optical component mounting surface of the second surface 2b of the wiring board 2.
- the second electronic component is specifically a sensor chip (imaging device, solid-state imaging device, semiconductor imaging device) 17 which is a semiconductor chip for an optical sensor.
- the sensor chip 17 as shown in FIG. 3, the light receiving surface of the light receiving element is exposed on the upper surface side.
- a CMOS image sensor circuit is formed on the main surface of the sensor chip 17.
- This CMOS image sensor circuit is formed by a CMOS process that is typically used in a semiconductor device manufacturing process, and includes a sensor array and an analog circuit that processes electric signals obtained by the sensor array. Have.
- each light receiving element is a part that forms a pixel of a CMOS image sensor circuit, and has a photoelectric conversion function of converting an incident optical signal into an electric signal.
- a photodiode or a phototransistor is used as the light receiving element.
- a plurality of electrodes are arranged on the outer periphery of the main surface of the sensor chip 17 along the outer periphery.
- the bonding pad is an extraction electrode of the CMOS image sensor circuit, and is electrically connected to a land (wiring) of the wiring board 2 through a bonding wire 18.
- the bonding wire 18 is made of, for example, gold (Au) or the like.
- the frame 4 is fixed to the optical component mounting surface of the wiring board 2 so as to cover the sensor chip 17.
- the frame 4 includes a lens holder 20 to which the lens 6 is attached, and a lens barrel 30 to be attached to the lens holder 20.
- the lens barrel 30 is made of an insulating material such as PBT (polybutylene terephthalate).
- PBT polybutylene terephthalate
- the bottom surface of the lens barrel 30 on the leg side is tightly bonded to the optical system component mounting surface of the wiring board 2 with an adhesive (omitted).
- a partition plate 31 for partitioning the upper and lower chambers is provided inside the lens barrel 30. At the center of the partition plate 31 and at a position facing the sensor array of the sensor chip 17, a planar rectangular opening 32 penetrating the upper and lower surfaces of the partition plate 31 is formed.
- the opening 32 is closed by an IR filter 33 attached to the partition plate 31.
- the IR filter 33 has a function of passing visible light but blocking unnecessary infrared light having a predetermined frequency or higher.
- the IR filter 33 may be attached to the lens 6 closer to the sensor chip 17 than to the partition plate 31, but the present invention is not limited thereto.
- a lens holder (lens holding unit) 20 is attached to the head side of the lens barrel 30 so as to close the opening of the head of the lens barrel 30.
- the lens holder 20 and the lens barrel 30 are connected by fitting a screw formed on the inner circumferential surface on the head side of the lens barrel 30 with a screw formed on the lower outer circumferential surface of the lens holder 20. It is fixed with a fixing force by an adhesive applied to the outer periphery of the connecting portion.
- the lens holder 20 is made of the same material as the lens barrel 30, for example.
- the lens (optical lens) 6 is housed inside the lens holder 20 in a state of being firmly supported by a back aperture plate 21 made of metal or the like.
- the lens 6 is made of a convex lens for receiving light, is made of an inexpensive and lightweight material such as plastic, and is provided so as to face the sensor array on the main surface of the sensor chip 17.
- a light receiving window 5 having, for example, a plane circular shape is opened in a state where the plane position relative to the lens 6 is aligned.
- Light from the outside of the camera module 1 is transmitted through the light receiving window 5, the lens 6, and the IR filter 33 in this order, and is emitted to the sensor array of the sensor chip 17.
- the lens holder 20 to which the lens 6 is attached and the lens barrel 30 to which the IR filter 33 is attached are integrated by screwing to form the frame 4.
- the frame 4 is positioned with the adhesive applied to the joint surface of the frame 4 and fixed to the second surface 2b of the wiring board 2.
- connection terminals 35 are arranged side by side along one side of the wiring board 2 on the second surface 2b of the wiring board 2 which is outside the fixing area of the frame 4.
- the connection terminal 35 is a terminal for electrically connecting a circuit in the camera module 1 to an external device. That is, the connection terminal 35 is electrically connected to a circuit in the camera module 1 through the wiring of the wiring board 2.
- the connection terminal 35 is, for example, an ACF (Anisotropic Conductive film (anisotropic conductive film) is electrically connected to the wiring of the flexible wiring board 8 through a joining member 7 such as an anisotropic conductive film, and is further electrically connected to an external device through the flexible wiring board 8. Has become.
- ACF Application Function Conductive film
- the flexible wiring board 8 has external electrode terminals formed at a predetermined pitch on an outer edge (right end) on a lower surface side thereof.
- the flexible wiring board 8 has a land (wiring) on an upper surface of a mounting board of a mobile phone. They are connected in layers.
- camera module 1 has a wiring motherboard preparation (S01), component mounting (S02), wire bonding (S03), resin layer formation (S04), substrate half dicing (S05), component mounting (S06), wire bonding (S07), fixing of lens holder with filter (fixing of frame) (S08), cutting of wiring mother board (S09), connection of flexible wiring board (S10) .
- a wiring motherboard 2f as shown in FIGS. 5 to 7 is prepared (S01).
- the wiring motherboard 2f is a wiring board having a plurality of product forming parts for manufacturing a large number of camera modules 1. 5 and 6, the product forming section 40 is indicated by a square dotted line. The narrow area between the product forming sections 40 is the area that is finally removed by cutting.
- the wiring motherboard 2f has a structure in which a total of 15 product forming sections 40 are arranged in 3 columns and 5 rows. This number is for convenience of explanation, and may be larger in actual production.
- the structure of each product forming section 40 is the structure of the wiring board 2 already described.
- FIG. 5 shows the first surface 2a of the wiring motherboard 2f
- FIG. 6 shows the second surface 2b of the wiring motherboard 2f.
- a guide hole 41 formed of a circular hole and a guide hole formed of a long hole are provided at the corners of the wiring motherboard 2f. These guide holes 41 and 42 are used for positioning the wiring motherboard 2f and the like.
- the thickness of the wiring motherboard 1 is extremely thin, for example, about 0.3 mm.
- the wiring motherboard 2f has a four-layer wiring structure using, for example, a glass epoxy resin as an insulating material, and is formed by, for example, a subtraditional method.
- a wiring pattern for mounting system-related components is provided on the first surface 2a of the product forming unit 40.
- the second surface 2b of the product forming section 40 is provided with a wiring pattern for mounting optical components, but in FIG. 6, it is arranged on one side of the product forming section 40 for easy viewing of the drawing.
- the wiring material of the wiring motherboard 2f is made of, for example, copper (Cu).
- a plating film is formed on the surface of the wiring portion that forms the mounting portion of the semiconductor chip, the electrode attachment portion of the chip component, the wire connection portion (land, wire bonding pad, etc.) as necessary.
- the plating film is plated with nickel (Ni) and gold (Au), for example.
- the first electronic component constituting the system component is mounted on the first surface 2a of each product forming section 40 of the wiring motherboard 2f (S02). That is, a logic chip 10, a memory chip 11, and a chip component 12 are mounted as first electronic components.
- FIG. 7 shows three adjacent product forming sections 40. The range indicated by the arrow is the product forming section 40. Until the wiring motherboard 2f is divided, the following figures will mainly describe three adjacent product forming sections 40.
- wire bonding is performed where wire bonding is required (S03). That is, the electrodes of the logic chip 10 and the memory chip 11 are connected to the wiring of the wiring motherboard 2f by conductive bonding wires 15 and 16.
- a sealing body (resin layer) 3f made of an insulating resin is formed to a predetermined thickness on the first surface 2a side of each product forming part 40, The chip 10, the memory chip 11, the chip parts 12, etc. are covered (S04).
- the sealing body (resin layer) 3f protects the first electronic component.
- the resin for example, a thermosetting resin such as an epoxy resin containing a filler is used.
- the encapsulating body (resin layer) 3f adopts a batch encapsulating method of encapsulating substantially the entire surface of the wiring motherboard 2f at a time.
- the collective sealing method for example, a transfer molding method is used.
- a cutting groove extending from the surface of the sealing body (resin layer) 3f to the surface layer of the wiring motherboard 2f.
- Shape 45 S05
- the cut grooves 45 are formed vertically and horizontally along the boundaries of the product forming sections 40.
- the sealing body (resin layer) 3f is divided into the sealing body 3.
- the wiring motherboard 2f is not completely cut because the depth of the cutting groove 45 is stopped at, for example, a depth of about 2/3 in the thickness direction of the wiring motherboard 2f.
- the cutting grooves 45 By separating the collectively sealed body (resin layer) 3f by the cutting grooves 45 in this way, it is possible to reduce the warpage and twist of the wiring motherboard 2f due to the contraction of the collectively sealed body (resin layer) 3f. In addition, it is possible to improve the bondability of the wire for wire bonding mounted on an optical system component, which will be described later, and to improve the production yield of the camera module 1. Note that the cut groove 45 completely separates the package sealing body (resin layer) 3f, but it does not matter if it does not reach the first surface 2a of the wiring motherboard 2f. Even in this case, the stress on the wiring motherboard 2f due to the contraction of the package sealing body (resin layer) 3f can be reduced.
- the cut groove 45 may be one that does not completely separate the collectively sealed body (resin layer) 3f but reaches a position halfway in the thickness direction of the collectively sealed body (resin layer) 3f. In this case, the effect is lower than that of completely separating the encapsulation body (resin layer) 3f, but the stress can be reduced.
- the frame 4 is fixed to the joint 46 (S08).
- the frame 4 serves as a lens holder 20 to which the lens 6 is attached and a lens barrel 30 to be attached to the lens holder 20, as described above.
- the lens 6 is attached to the lens holder 20 by the back aperture plate 21, and the IR filter 33 is fixed to the lens barrel 30.
- a male screw provided on the lower outer periphery of the lens holder 20 is screwed into a female screw provided on the upper inner periphery of the lens barrel 30, and an outer portion of the connecting portion is screwed.
- An adhesive is applied to and firmly fixed.
- a predetermined adhesive (not shown) is provided on the lower surface of the lens barrel 30, and the frame 4 is bonded and fixed to the joint 46, that is, the wiring board 2 with the adhesive.
- the fixing accuracy of the lens 6 may not be high. That is, when the frame 4 is fixed to the wiring board 2 at the joint 46, the optical axis of the lens 6 and the center of the sensor array in the sensor chip 17 mounted on the wiring board 2 are aligned with the wiring board 2. This is because the frame 4 is fixed. Thereby, the assembling work of the frame 4 is facilitated, and the productivity can be improved. The operation of fixing the frame 4 to the wiring board 2 will be described later in detail.
- the wiring motherboard 2f is cut into individual pieces at the boundaries between the product forming sections 40 (S09).
- the cutting is performed by cutting the wiring mother board 2f at the bottom of the cutting groove 45. By this singulation, a plurality of joints 46 are formed.
- the wiring mother board 2f is cut into the wiring board 2.
- the flexible wiring board 8 is connected to the second surface 2b of the wiring board 2 which is out of the fixing region of the frame 4 (S10).
- the flexible wiring board 8 is connected to a plurality of connection terminals 35 on the second surface 2b of the wiring board 2 (wiring mother board 2f) which is out of the area where the frame 4 is fixed.
- a bonding member 7 such as an ACF (anisotropic conductive film).
- external electrode terminals are formed at a predetermined pitch on an outer edge (right end) on the lower surface side of the flexible wiring board 8.
- the assembling apparatus 50 is an assembling apparatus that positions and joins a joint to a joint.
- the article to be joined is the wiring board 2 on which the sensor chip 17 is mounted, that is, the joining section 46, and the joining article is the frame 4.
- the assembling apparatus 50 includes a first stage 51 on which the wiring board 2 is mounted, a second stage 53 in which a light sensitivity detection unit 52 for optically detecting the lower surface of the hollow frame 4 is disposed, and a frame. It has a base 55 having on its upper surface a third stage 54 on which the body 4 is placed. On the third stage 54, a tray 56 for arranging and housing the frame 4 is arranged.
- a robot 60 is provided on the upper surface of the base 55.
- the robot 60 is schematically shown, but includes a cylindrical body 62 on which a chuck 61 for detachably holding the frame 4 of the third stage 54 is attached, and a fixed distance (L) from the chuck 61 (cylindrical body 62).
- the mounting head unit 64 has a position detection camera 63 that is located at a remote location and can detect the position of each stage, and moves between the stages by controlling the mounting head unit 64 three-dimensionally. It is configured to be. As shown in the plan view of FIG. 19, the left-right direction of the base 55 is defined as an X direction, and the direction of force from the near side to the back of the base 55 is defined as a Y direction.
- the height direction of the assembling apparatus 50 is defined as the Z direction.
- 65 is the X axis
- 66 is the Y axis
- 67 is the Z axis.
- the movement of the mounting head 64 is controlled along the X-axis 65, the Y-axis 66, and the Z-axis 67 by a control unit disposed in the base 55.
- the cylindrical body 62 has an upper end portion bent in one side direction (left direction), and a light emitting portion 70 serving as a light source is disposed in the bent inner portion.
- the light (light flux) 71 emitted from the light emitting section 70 is changed in the optical path by a mirror 72 disposed at the bent portion of the cylindrical body 62, and extends straight down (Z direction). The light passes through the inside and is irradiated on the upper surface of the base 55.
- the cylindrical body 62 is provided with the optical system that emits the light (light flux) 71 emitted from the light emitting unit 70 from the lower surface of the cylindrical body 62.
- the light (light flux) 71 is, for example, a laser beam having a straight traveling property.
- a chuck 61 having a plurality of claws 61 a is attached to the outer periphery of the lower end side of the cylindrical body 62.
- the chuck 61 holds the frame 4 by closing the plurality of claws 61a.
- the number of claws 61a is four in Example 1 (see FIG. 19).
- the tip of the claw 61a protrudes from the lower end of the cylindrical body 62, and the frame 4 is detachably held in this protruding space. Therefore, the light (light flux) 71 passing through the inside of the cylinder 62 can pass through the inside of the frame 4 and pass through the lens 6 inside the frame 4.
- the light (luminous flux) 71 transmitted through the lens 6 of the frame 4 is transmitted.
- the light can be detected by the light sensitivity detector 52.
- the light sensitivity detection unit 52 is configured by, for example, a CCD (Charge Coupled Device).
- a control panel 75 is provided on the right front side of the upper surface of the base 55.
- the robot 60 can be freely controlled by operating the operation buttons and the like on the control panel 75, and the light sensitivity detection unit 52 and the position detection camera 63 of the second stage 53 can all be controlled. Further, measurement information obtained by the position detection output camera 63, the light sensitivity detection unit 52, and the like is also subjected to arithmetic processing, and each unit can be further controlled by information obtained by the arithmetic processing.
- the wiring board 2 is arranged at the first position, ie, the first stage 51, and the amount of displacement of the second electronic component on the wiring board at the first position is measured.
- the robot 60 shifts the optical axis of the lens 6 at the second position, which is a fixed distance away from the first position, that is, at the position of the chuck 61, which is positioned and stopped just above the second stage 53. Is detected, the chuck 61 is moved to the first position where the wiring board 2 is placed, and the frame 4 is joined to the wiring board 2.
- This assembling method is performed through steps S31 to S37 as shown in the flowchart of FIG.
- S31 the absolute coordinates of the light sensitivity detector with respect to the robot origin are measured.
- S32 the sensor position on the board is measured.
- S33 the lens holder is held by the chuck.
- S34 the center position of the lens in the light sensitivity detector is measured.
- S35 the check movement amount is determined by performing arithmetic processing based on each measurement information and the like.
- the lens holder is attached to the substrate by moving the chuck.
- S37 the lens holder is fixed to the substrate.
- FIGS. 1A to 1D are schematic front views showing a state of the assembling apparatus 50 at a predetermined stage.
- the mounting head unit 64 is moved to detect the position detection camera 63 by the light sensitivity detection unit 52 of the second stage 53, and the origin of the robot 60 ( The absolute coordinates A (Xa, Ya) of the light sensitivity detector 52 with respect to X0, Y0) are measured (S31).
- the chuck 61 holding the frame 4 is stopped at the second stage 53, the chuck 61 is stopped so that the chuck 61 (strictly, the center of the chuck 61) is located on the coordinates A (Xa, Ya). You.
- the mounting head unit 64 is moved to move the position detecting camera 63 to the second position.
- the position of the wiring board 2 which is the object to be bonded of the first stage 51, that is, the center position B (Xb, Yb) of the sensor array in the sensor chip 17 mounted on the wiring board 2 is measured (S32).
- the position measurement of the sensor chip 17 is performed in the same manner as in the usual chip position detection by detecting a position mark on the chip surface prior to connecting the electrodes of the semiconductor chip and the lands (wiring) of the wiring board with wires.
- the mounting head unit 64 is moved to hold the frame 4 of the tray 56 of the third stage 54 with the chuck 61 (S33), and Stop at the set stop position A (Xa, Ya) of stage 53.
- the light emitting section 70 emits light
- the light (light flux) 71 transmitted through the lens 6 of the frame 4 held by the chuck 61 1 is received by the light sensitivity detecting section 52, and the chuck 61 (chuck 61) is received.
- the position C (Xc, Yc) of the optical axis of the lens 6 with respect to the center of the lens 6 is measured (S34: see FIG. 21).
- the amount of displacement of the optical axis of the lens 6 with respect to the center position A (Xa, Ya) of the chuck 61 can be measured.
- the position shift amount is obtained by transmitting the light 71 to the lens 6 of the frame 4 held by the chuck 61 and detecting the transmitted light 71 by the light sensitivity detector 52, and determining the position having the highest light intensity as the optical axis. .
- a multi-valued image 80 is obtained from the light intensity information detected by the light sensitivity detection unit 52 as shown in FIG.
- an endless contour line (arbitrary contour line 81) at which the arbitrary light intensity of the multi-valued image 80 is the same is obtained on the XY plane.
- a Y coordinate (Yc) of a position (Xmax) at which the length of a line segment connecting the contour lines in the X direction of the XY plane is maximum, and a distance between the contour lines in the Y direction of the XY plane The X coordinate (Xc) of the position (Ymax) at which the length of the line segment connecting the two is maximum is determined, and the position C (Xc, Yc) represented by the X coordinate and the Y coordinate is defined as the optical axis of the lens 6.
- a multi-valued image 80 is obtained from the light intensity information detected by the light sensitivity detection unit 52 as shown in FIG.
- an endless contour line (arbitrary contour line 81) at which the arbitrary light intensity of the multi-valued image 80 is the same is obtained on the XY plane.
- a first line segment a between contour lines at an arbitrary position along the X direction on the XY plane is selected, and a center position (Xc) of the first line segment a is calculated and calculated.
- a second line segment b between contour lines at an arbitrary position along the Y direction is selected, and a center position (Yc) of the second line segment b is calculated and calculated, and the coordinates C (Xc, It is determined by determining Yc) as the optical axis of the lens 6.
- a force S for moving the chuck 61 holding the frame 4 to the first position, which is the first stage 51, which is a predetermined distance away from the second position, which is the second stage 53 Prior to the movement, the displacement information such as the measurement information obtained in S31, the sensor position measurement information obtained in S32, the lens center position measurement information obtained in S34, the position detection camera 63 and the chuck 61 (the The moving distance of the chuck 61 is corrected by performing arithmetic processing in the control unit from various information such as the offset distance L from the center (S35).
- the chuck 61 is moved to a first position, which is a first stage 51, which is a predetermined distance away from a second position, which is a second stage 53. Then, the frame 4 held by the chuck 61 on the wiring board 2 placed on the first stage 51 is attached to the wiring board 2 (S36: see FIG. 24).
- an adhesive is previously provided on the lower surface of the frame 4 and the frame 4 is joined to the wiring board 2 via the adhesive.
- the adhesive is attached to the lower surface of the frame 4 by, for example, a squeegee.
- the frame 4 After fixing the first frame 4 to the wiring board 2, the frame 4 is joined to the wiring board 2 of the next product forming section, and the joining is repeated until the frame 4 is fixed to all the product forming sections. Do the work.
- the adhesive for connecting the frame 4 to the wiring board 2 is simultaneously cured by a curing treatment and fixed (S37).
- the frame 4 is wired. After fixing to the substrate 2, the height of the lens holder 20 in the Z direction may be adjusted.
- the first embodiment not only the displacement of the image sensor (sensor chip 17) mounted on the wiring board 2 but also the displacement of the optical axis of the lens 6 with respect to the frame 4 are measured.
- the position shift is corrected and the chuck 61 holding the frame 4 is moved to join the frame 4 to the wiring board 2, the optical communication between the lens 6 and the image sensor (sensor chip 17) is performed.
- the connection is improved and the production yield is improved. Therefore, a camera module with excellent characteristics 1 Can be provided at low cost.
- FIG. 25 is a schematic view illustrating a method for manufacturing a camera module according to Embodiment 2 of the present invention.
- the frame 4 is held by the clamper 90, and the held frame 4 is brought into contact with the wiring board 2 on which the sensor chip 17 is mounted on the upper surface. And slide in XY direction and rotation direction. Then, the captured image 92 of the object 91 located above the frame body 4 is observed with the sensor chip 17, and the slide of the clamper 90 is stopped in a state where the image is the best, and in this state, as shown in FIG. As described above, the wiring board 2 and the frame 4 are fixed with the adhesive 93.
- the electrode terminal 95 is connected to the connection terminal 35 provided on the wiring board 2.
- the connection terminal 35 is connected to a monitor television or the like, so that the captured image 92 is displayed on the screen.
- the optical axes of the sensor chip 17 and the lens 6 can be aligned with high accuracy.
- FIG. 26 is a cross-sectional view illustrating a method for manufacturing a camera module according to Embodiment 3 of the present invention.
- the semiconductor chip is mounted only on the second surface 2b side of the wiring board 2. That is, in addition to the image sensor circuit (image sensor circuit), a memory circuit and an arithmetic circuit for digital signal processing are formed on the sensor chip 96, so that the sensor chip 96 includes the logic chip 10 and the memory chip 11. It can also serve as a function.
- the frame 4 can be positioned and fixed to the wiring board 2 with high accuracy by applying the present invention.
- a sensor array having a plurality of light receiving elements is not always arranged near the center of the sensor chip 96, but if the present invention is applied, high accuracy can be achieved. Since the center coordinates of the sensor array in the sensor chip 96 and the optical axis of the lens 6 can be aligned, the characteristics of the camera module can be improved.
- the present invention can be applied to other camera modules such as a camera module using a CCD (Charge Coupled Device) image sensor.
- CCD Charge Coupled Device
- a sealing body may be formed for each product forming unit (individual mold)
- the present invention can be applied to manufacture of at least another optical module.
- the camera module manufacturing method of the present invention not only the displacement of the image sensor mounted on the wiring board but also the displacement of the optical axis of the lens with respect to the frame are measured.
- the frame body is joined to the wiring board by correcting the displacement, the optical connection between the lens and the image sensor is improved, and the production yield is improved. Therefore, according to the present invention, a camera module having excellent characteristics can be provided at low cost.
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Abstract
Description
Claims
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PCT/JP2004/008354 WO2005125181A1 (ja) | 2004-06-15 | 2004-06-15 | 光学モジュールの製造方法及び組立装置 |
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PCT/JP2004/008354 WO2005125181A1 (ja) | 2004-06-15 | 2004-06-15 | 光学モジュールの製造方法及び組立装置 |
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Cited By (2)
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WO2009016931A1 (ja) * | 2007-08-02 | 2009-02-05 | Konica Minolta Opto, Inc. | 撮像装置の製造方法、撮像装置及び携帯端末 |
WO2014157189A1 (ja) * | 2013-03-26 | 2014-10-02 | 株式会社ニコン | 自動処理装置および自動処理方法、ならびにパレット |
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JPH104522A (ja) * | 1996-06-17 | 1998-01-06 | Sony Corp | カメラの製造方法 |
JP2002290842A (ja) * | 2001-03-23 | 2002-10-04 | Sanyo Electric Co Ltd | 固体撮像素子の製造方法 |
JP2002325193A (ja) * | 2001-04-26 | 2002-11-08 | Konica Corp | 撮像装置及びその組み付け方法 |
JP2004335794A (ja) * | 2003-05-08 | 2004-11-25 | Fuji Photo Film Co Ltd | 固体撮像素子及びカメラモジュール及びカメラモジュールの製造方法 |
JP2005086659A (ja) * | 2003-09-10 | 2005-03-31 | Sony Corp | カメラモジュール生産方法およびその方法を用いた組立装置 |
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JPH104522A (ja) * | 1996-06-17 | 1998-01-06 | Sony Corp | カメラの製造方法 |
JP2002290842A (ja) * | 2001-03-23 | 2002-10-04 | Sanyo Electric Co Ltd | 固体撮像素子の製造方法 |
JP2002325193A (ja) * | 2001-04-26 | 2002-11-08 | Konica Corp | 撮像装置及びその組み付け方法 |
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WO2009016931A1 (ja) * | 2007-08-02 | 2009-02-05 | Konica Minolta Opto, Inc. | 撮像装置の製造方法、撮像装置及び携帯端末 |
WO2014157189A1 (ja) * | 2013-03-26 | 2014-10-02 | 株式会社ニコン | 自動処理装置および自動処理方法、ならびにパレット |
CN105263670A (zh) * | 2013-03-26 | 2016-01-20 | 株式会社尼康 | 自动处理装置、自动处理方法及托盘 |
CN105263670B (zh) * | 2013-03-26 | 2018-07-06 | 株式会社尼康 | 自动处理装置、自动处理方法及托盘 |
JP2020078863A (ja) * | 2013-03-26 | 2020-05-28 | 株式会社ニコン | 自動処理装置、および自動処理方法 |
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