WO2012046801A1 - 光電気複合基板、回路基板装置および光電気複合デバイス - Google Patents
光電気複合基板、回路基板装置および光電気複合デバイス Download PDFInfo
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- WO2012046801A1 WO2012046801A1 PCT/JP2011/073091 JP2011073091W WO2012046801A1 WO 2012046801 A1 WO2012046801 A1 WO 2012046801A1 JP 2011073091 W JP2011073091 W JP 2011073091W WO 2012046801 A1 WO2012046801 A1 WO 2012046801A1
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- circuit board
- optical
- electric
- substrate
- board
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
Definitions
- the present invention relates to an opto-electric composite substrate including an optical circuit substrate and an electric wiring substrate, a circuit board device including the opto-electric composite substrate, and an opto-electric composite device on which the optical element and the electric element are mounted.
- Patent Document 1 discloses that an optical circuit board on which an optical waveguide is patterned and an electric wiring board on which an electric element is mounted are bonded to each other with a sheet-like adhesive, thereby providing an electric wiring with an optical waveguide.
- Pattern formation refers to the formation of wiring that propagates a signal or power.
- Pattern formation of an optical waveguide refers to the formation of a core for propagating an optical signal.
- Pattern formation of a conductor layer Forming wiring for electric signal or power supply.
- Patent Document 2 describes an optical transmission / reception module (photoelectric composite substrate) in which an electric wiring layer is formed on one main surface of a strip-shaped optical waveguide film, and this electric wiring layer is covered with a protective layer.
- optical transmission / reception module optical transmission / reception units having electrode pads at both ends in the longitudinal direction are formed, and an intermediate portion in the longitudinal direction has a belt shape in which the optical waveguide core extends linearly.
- Such a strip-shaped optoelectric composite substrate is used by being erected along an electric circuit substrate with a pair of optical connectors mounted on an electric circuit substrate (multilayer printed circuit board) as both ends.
- the optical waveguide can be installed in a strip shape at a desired position with respect to the electric circuit board, there is no need to pattern the optical waveguide as in Patent Document 1. For this reason, a photoelectric composite device having a high degree of freedom in designing an optical circuit can be obtained.
- the present invention has been made in view of the above-described problems, and can provide an optical / electrical composite board and a circuit that can install an optical waveguide at a desired position of the electric circuit board and can increase the mounting efficiency of electric elements.
- a substrate apparatus and a photoelectric composite device are provided.
- An opto-electric composite board comprising an optical circuit board including an optical waveguide and an electric wiring board including a conductor layer and laminated on the optical circuit board, wherein the electric wiring board is more than the optical circuit board.
- a photoelectric composite substrate comprising an extended portion formed to extend and a conductive portion provided in the extended portion.
- the conductor layer is patterned to form a pad portion, and a through hole that electrically connects the pad portion and the surface of the electric wiring board on the side of the optical circuit board is provided as the conductive portion.
- the photoelectric composite substrate according to any one of (1) to (7) above.
- the anisotropic conductive film electrically connected to the conductor layer is attached to at least the extension portion of the surface of the electrical wiring board on the optical circuit board side.
- the photoelectric composite substrate according to any one of the above.
- An opto-electric composite substrate including an optical circuit substrate including an optical waveguide, and an electric wiring substrate including a conductor layer in which a pad portion is patterned and laminated on the optical circuit substrate, and an optical element or an electric element mounted
- An electric circuit board, and the electric wiring board includes an extending part formed to extend from the optical circuit board, and the conductor layer and the electric circuit board are connected to the extending part.
- a conductive portion is provided, the photoelectric composite substrate is locally mounted on the surface of the electric circuit substrate, and the photoelectric composite substrate and the electric circuit substrate are electrically connected, and the pad portion Constitutes at least a part of a mounting region of the optical element or the electric element.
- the electric wiring board is a flexible wiring board, and the extending portion is bent so as to cover a side edge in the extending direction of the optical circuit board and is connected to the electric circuit board (10)
- An opto-electric composite substrate including an optical circuit substrate including an optical waveguide, and an electric wiring substrate including a conductor layer in which a pad portion is patterned and laminated on the optical circuit substrate, and an optical element or an electric element mounted
- An electrical circuit board, and the electrical wiring board includes an extension part formed to extend from the optical circuit board, and the conductor layer and the electrical circuit board are provided in the extension part.
- a conductive portion to be connected is provided; the optoelectric composite substrate is locally mounted on a surface of the electric circuit substrate; the optoelectric composite substrate and the electric circuit substrate are electrically connected; and the pad A photoelectric composite device, wherein the optical element or the electric element is mounted on a portion.
- the electric wiring board is a flexible wiring board, and the extension portion is bent so as to cover a side edge in the extending direction of the optical circuit board, and is connected to the electric circuit board.
- the optical waveguide can be installed at an arbitrary position on the surface of the electric circuit substrate.
- the optical waveguide does not cause a dead space in the element mounting region in the electric circuit board.
- the dead space is an area where electrical wiring cannot be formed on the outermost surface of the photoelectric composite substrate. Since there is no electrical wiring, the element cannot be electrically connected to the electrical wiring even if the element is mounted. An area that cannot be mounted.
- the various components of the present invention do not have to be individually independent, that a plurality of components are formed as one member, and one component is formed of a plurality of members. That a certain component is a part of another component, a part of a certain component overlaps a part of another component, and the like.
- the optical waveguide can be installed at a desired position on the electric circuit board, and the mounting efficiency of the electric element can be increased.
- 1 is a perspective view of a photoelectric composite substrate according to a first embodiment.
- 1B is a sectional view taken along line BB in FIG. 1A.
- FIG. It is CC sectional view taken on the line of FIG. 1A.
- 1 is a perspective view of a circuit board device according to a first embodiment.
- 1 is a perspective view of a photoelectric composite device according to a first embodiment.
- It is sectional drawing of the circuit board apparatus concerning 1st embodiment.
- 1 is a cross-sectional view of a photoelectric composite device according to a first embodiment.
- FIG. 1A is a perspective view of the photoelectric composite substrate 10 according to the first embodiment of the present invention.
- 1B is a cross-sectional view taken along line BB in FIG. 1A
- FIG. 1C is a cross-sectional view taken along line CC in FIG. 1A.
- FIG. 2 is a perspective view of the circuit board device 16 according to the present embodiment.
- FIG. 3 is a perspective view of the photoelectric composite device 14 according to the present embodiment.
- the optoelectric composite substrate 10 includes an optical circuit substrate 40 including an optical waveguide 42 and an electric wiring substrate 70 including a conductor layer 72 and stacked on the optical circuit substrate 40.
- the electrical wiring substrate 70 includes an extended portion 74 formed so as to extend beyond the optical circuit substrate 40, and the extended portion 74 includes a conductor layer 72 and an optical and electrical circuit.
- a conduction part 50 is provided for connecting the back side of the composite substrate 10. The conduction part 50 is preferably included in the intermediate part M in the extending direction of the electric wiring board 70.
- the optical element 110 or the electric element 120 is attached to the conductor layer 72 of the photoelectric composite substrate 10. (Electric elements 121 to 124 in FIG. 3) can be mounted. Therefore, when the photoelectric composite substrate 10 is mounted on the electric circuit board 30, the dead space of the element mounting region 34 (FIG. 2) does not occur in the electric circuit board 30, and the photoelectric composite device 14 having high mounting efficiency. Can be realized.
- the photoelectric composite substrate 10 and the electric circuit board 30 are collectively referred to as a circuit board device 16. That is, as shown in FIG. 2, the circuit board device 16 of the present embodiment includes the optoelectric composite board 10 and the electric circuit board 30 on which the optical element 110 or the electric element 120 is mounted. In the circuit board device 16 of the present embodiment, the optoelectric composite substrate 10 is locally mounted on the surface of the electric circuit substrate 30, and the back surface of the optoelectric composite substrate 10 and the electric circuit substrate 30 are electrically connected to each other.
- a pad portion 76 formed by patterning the conductor layer 72 of the electric composite substrate 10 constitutes at least a part of the mounting region (element mounting region 34) of the optical element 110 or the electric element 120.
- the optoelectric composite device 14 of the present embodiment includes the optoelectric composite substrate 10, the electric circuit substrate 30, and the optical element 110 or the electric element 120 as shown in FIG.
- the photoelectric composite substrate 10 is locally mounted on the surface of the electric circuit substrate 30 so that the back surface of the photoelectric composite substrate 10 and the electric circuit substrate 30 are electrically connected.
- the optical element 110 or the electric element 120 is mounted on a pad portion 76 formed by patterning the conductor layer 72 of the photoelectric composite substrate 10.
- an electrical element 120 (electric element 121) is mounted on the surface of the photoelectric composite substrate 10.
- the electric element 120 (electric element 122) is mounted across the plurality of photoelectric composite substrates 10.
- the electric element 120 (electric element 123) is also mounted on the upper part of the intersection between the plurality of photoelectric composite substrates 10.
- an electric element 120 (electric element 124) is mounted across the optoelectric composite substrate 10 and the electric circuit substrate 30.
- the electrical wiring board 70 includes a conductive conductor layer 72 and a transparent adhesive layer 73 deposited on substantially the entire lower surface thereof.
- the electrical wiring board 70 including the conductor layer 72 means that a conductive layer is formed on the entire surface or part of the electrical wiring board 70 by patterning.
- the conductor layer 72 is made of a conductive material, for example, a metal material such as Cu, Ni, Al, Au, or Pt.
- the conductor layer 72 may be formed by depositing a sheet-like metal material on the entire upper surface of the adhesive layer 73, or may include a pad portion 76 patterned in a desired shape.
- the pad portion 76 may be formed inside the extending portion 74, or may be formed across the waveguide facing portion 78 and the extending portion 74. Furthermore, it may be formed over the entire width direction of the electric wiring board 70 (the left-right direction in FIG. 1C).
- the extending portion 74 of the present embodiment is formed at least on the side with respect to the extending direction of the optical waveguide 42 (left-right direction in FIG. 1A). In the present embodiment, extending portions 74 are formed to extend on both sides in the extending direction of the optical waveguide 42 with the optical circuit board 40 as the center. However, instead of this embodiment, the extending part 74 may extend in various directions with respect to the optical circuit board 40, and may be formed on the entire circumference of the optical circuit board (see FIG. 8C).
- the extending portion 74 refers to a partial region that protrudes like a bowl outward in the width direction from the optical circuit board 40.
- the optical circuit board 40 is fixed to the electric circuit board 30 using the extending part 74, and the electric wiring board 70 and the electric circuit board 30 are electrically connected by the extending part 74.
- a pad portion 76 is provided on the extending portion 74 to mount the optical element 110 and the electric element 120.
- the optical circuit board 40 bonded to the lower surface of the electric wiring board 70 is a board in which the optical waveguide 42 is formed on a part or all of it.
- the optical waveguide 42 has a linear core portion 42a and a sheath-like clad portion 42b surrounding the core portion 42a. For the sake of explanation, hatching is omitted with respect to the cross section of the core portion 42a.
- the core part 42a and the clad part 42b have different light refractive indexes.
- the optical circuit board 40 is an optical member that propagates light incident on the end portion or the intermediate portion of the core portion 42a while totally reflecting it at the interface between the core portion 42a and the clad portion 42b.
- a plurality of core parts 42a may be provided and separated from each other by the clad part 42b.
- the thickness of the optical waveguide 42 is preferably 15 to 200 ⁇ m, more preferably 30 to 100 ⁇ m.
- the length direction of the optical waveguide 42, the core portion 42a, and the clad portion 42b refers to the left-right direction in FIG. 1B
- the thickness direction refers to the up-down direction in FIG. .
- the photoelectric composite substrate 10 of the present embodiment has a strip shape, and the longitudinal direction thereof coincides with the extending direction of the optical waveguide 42.
- the longitudinal direction of the optical waveguide 42 may be the alignment direction of the core portions 42a (see FIG. 8E).
- the width of the core part 42a is preferably 1 to 200 ⁇ m, more preferably 5 to 100 ⁇ m, and even more preferably 10 to 60 ⁇ m.
- the thickness of the core part 42a is preferably 5 to 100 ⁇ m, more preferably 25 to 80 ⁇ m.
- the thickness of the cladding part 42b is preferably 3 to 50 ⁇ m, and more preferably 5 to 30 ⁇ m.
- Each constituent material of the core part 42a and the clad part 42b is not particularly limited as long as it is a material that causes a difference in refractive index.
- glass materials such as quartz glass and borosilicate glass can be selected and used.
- the optical waveguide 42 is provided with an optical path conversion unit 44 at an end portion or an intermediate portion.
- the optical path conversion unit 44 is an area in which light traveling in the plane of the optical circuit board 40 and light traveling in the crossing direction (typically in the plane perpendicular direction) with respect to the optical circuit board 40 are mutually converted. is there.
- the optical path conversion unit 44 is generally provided with an optical path conversion mirror 46 having a reflecting surface inclined.
- the optical path conversion mirror 46 is formed inside the optical path conversion section 44 of the optical waveguide 42, and has a refractive index different from that of the core section 42a on the inclined reflecting surface.
- the optical path conversion mirror 46 of this embodiment can be formed by subjecting the optical waveguide 42 to laser processing or grinding processing.
- a reflective film may be formed on the reflective surface (mirror surface) of the optical path conversion mirror 46 as necessary.
- a metal film such as Au, Ag, or Al is used as the reflective film.
- the optical path conversion mirror 46 is provided in the optical waveguide 42, and the conductor layer 72 is removed from the electric wiring substrate 70 in the local region including the optical path conversion mirror 46.
- the longitudinal direction of the optoelectric composite substrate 10 may be a straight line shape (left-right direction in the figure) as shown in FIG. 1 or a curved line shape as shown in FIG.
- the electrical wiring board 70 it is possible to pattern the electrical wiring board 70 to form a drive circuit for the optical element 110 and to mount the optical element 110 at a position on the electrical wiring board 70 above the optical path conversion mirror 46. .
- the waveguide facing portion 78 of the electrical wiring substrate 70 in the photoelectric composite substrate 10 can be used as a mounting region for the optical element 110.
- the pad portion 76 is formed on the conductor layer 72 corresponding to the upper surface of the electric wiring board 70, the optical element 110 and the electric element 120 can be mounted across the electric wiring board 70 and the electric circuit board 30. .
- the optical element 110 examples include a light emitting element such as a surface emitting laser (VCSEL), a light receiving element such as a photodiode (PD, APD), and the like.
- a light emitting element such as a surface emitting laser (VCSEL)
- a light receiving element such as a photodiode (PD, APD)
- various devices such as a semiconductor device such as an LSI or an IC, a resistor, a capacitor, or an inductor can be used in addition to the driving element of the optical element 110.
- the drive element is a combination of an amplifier such as a transimpedance amplifier (TIA) or a limiting amplifier (LA) and a driver IC for control.
- TIA transimpedance amplifier
- LA limiting amplifier
- a display portion (alignment mark 80) indicating the position of the optical path conversion mirror 46 is formed on the top surface of the optical circuit substrate 40 (the waveguide facing portion 78) excluding the extending portion 74 on the surface of the electrical wiring substrate 70. .
- alignment mark 80 as an index, alignment adjustment between the optical path conversion mirror 46 facing the opening 32 from which the conductor layer 72 is removed and the optical element 110 mounted on the electrical wiring board 70 is performed. Can do.
- the electric wiring board 70 may be a rigid board based on a hard material such as a glass epoxy board, or a flexible board based on a flexible film such as polyimide or polyester. Among these, the electric wiring board 70 of this embodiment is a flexible wiring board.
- the substrate thickness is preferably 0.005 mm to 0.3 mm, more preferably 0.01 mm to 0.3 mm.
- the thickness of the copper foil is preferably 0.1 ⁇ m to 50 ⁇ m, more preferably 0.5 ⁇ m to 30 ⁇ m.
- the dielectric constant is preferably 1.1 to 4.5, and more preferably 1.5 to 4.0.
- the dielectric loss tangent is preferably 0.0001 to 0.04, and more preferably 0.0005 to 0.03.
- the electric wiring board may be a double-sided board in which a conductor layer is formed on both sides of an insulating layer. In that case, an electrical circuit may be patterned on the conductor layer on the waveguide side. Further, a through hole that conducts the conductive layers on both sides may be provided regardless of whether or not a circuit is formed.
- the extending portion 74 in the electric wiring board 70 so as to cover the side edge 41 of the optical circuit board 40 along the extending direction of the optical waveguide 42. Therefore, even when the optical circuit board 40 is placed on the surface of the electric circuit board 30, that is, in a state where the optical circuit board 40 protrudes from the surface of the electric circuit board 30, the photoelectric composite substrate is used by using the extending portion 74. 10 can be mounted on the electric circuit board 30.
- the extending portions 74 may be provided only on one side in the width direction with respect to the waveguide facing portion 78, or the extending portions 74 may be formed on both sides as shown in FIG. Good. Moreover, the extending part 74 may be formed in a strip shape in the entire longitudinal direction of the electric wiring board 70 as shown in the figure, or may be intermittently formed at a plurality of locations in the longitudinal direction (see FIG. 8A). ).
- the conductor layer 72 of this embodiment is patterned to form a pad portion 76, and the through hole 52 that electrically connects the pad portion 76 and the back surface of the optoelectric composite substrate 10 has a conducting portion. 50.
- the pad portion 76 is connected to the wiring of the electric circuit board 30 by matching the pattern of the electric circuit board 30 with the through hole 52 of the photoelectric composite board 10.
- a through hole 52 is formed for each of the plurality of pad portions 76.
- the optical element 110 or the electric element 120 mounted on the pad portion 76 is connected to the wiring layer 36 (see FIG. 4) of the electric circuit board 30 through the through hole 52.
- the intermediate portion M provided with the conductive portion 50 that connects the conductor layer 72 and the back surface of the optoelectric composite substrate 10 is a region excluding the end portions E on both sides of the electric wiring substrate 70, and the electric wiring. This is a length region having a predetermined spread including the center in the longitudinal direction of the substrate 70.
- FIG. 4A is a cross-sectional view of the intermediate portion M of the circuit board device 16 according to the present embodiment
- FIG. 4B is a cross-sectional view of the photoelectric composite device 14.
- the electrical wiring board 70 of the photoelectric composite substrate 10 is a flexible wiring board, and the extending portion 74 is bent so as to cover the side edge 41 in the extending direction of the optical circuit board 40 and is connected to the electrical circuit board 30. .
- the electric circuit board 30 is a rigid board including the wiring layer 36.
- the electric circuit board 30 is formed with a concave hole 37 extending from the surface on which the adhesive layer 73 is adhered to at least the wiring layer 36.
- the recessed hole 37 and the through hole 52 communicate with each other. Thereby, the optical element 110 and the electric element 120 can be mounted on the wiring layer 36 through-holes.
- the plurality of solder mounting portions 113 of the optical element 110 are individually joined to the plurality of pad portions 76.
- the optical element 110 transmits and receives an optical signal to and from the core portion 42 a of the optical circuit board 40 through the light emitting and receiving unit 111.
- the conductor layer 72 has an opening immediately below the light emitting / receiving unit 111, and light reflected by the optical path conversion mirror 46 (not shown in FIG. 4) passes through the conductor layer 72 toward the light emitting / receiving unit 111. .
- This opening is filled with a resin filling portion 54.
- an acrylic resin, a polycarbonate resin, an epoxy resin, a silicone resin, or a norbornene resin can be used for the resin filling portion 54.
- the resin filling portion 54 has light transparency (transparency).
- the resin filling portion 54 is filled over the entire optical path from the core portion 42a to the light emitting / receiving portion 111.
- FIG. 5 is a cross-sectional view of a circuit board device 16 according to a first modification of the present embodiment.
- an anisotropic conductive film (Anisotropic Conductive Film) 90 electrically connected to the conductor layer 72 of the electric wiring board 70 is attached to at least the back surface of the extension part 74 of the electric wiring board 70. It is characterized by being. That is, the circuit board device 16 according to the present embodiment includes the anisotropic conductive film 90 that joins the wiring layer 36 of the electric circuit board 30 and the conductor layer 72 of the electric wiring board 70 as the conductive portion 50. The wiring layer 36 of the electric circuit board 30 is exposed and patterned on the surface of the electric circuit board 30.
- the anisotropic conductive film 90 is attached to the back surface of the extension portion 74, so that the extension portion 74 is pressed against the electric circuit substrate 30, so that the back surface of the electrical wiring substrate 70 is electrically connected.
- the pattern of the circuit board 30 is electrically connected.
- An anisotropic conductive film is a thin layer in which a conductive filler is dispersed in an insulating resin, and only a pressurized local region conducts in a perpendicular direction. For this reason, the conductor layer 72 is electrically connected to this pattern by pressing the extended portion 74 folded back along the side edge 41 of the optical circuit board 40 against the pattern of the wiring layer 36.
- the photoelectric composite substrate 10 of the present modification uses the anisotropic conductive film 90 and does not exclude the further formation of the through holes 52 penetrating the electric wiring substrate 70 and the anisotropic conductive film 90. Absent.
- FIG. 6 is a cross-sectional view of the photoelectric composite device 14 according to the second modification of the present embodiment.
- the mounting area (element mounting area 34) of the optical element 110 or the electric element 120 is configured to extend over the pad portion 76 of the electric wiring board 70 and the electric circuit board 30. .
- the electrical wiring board 70 of the photoelectric composite board 10 is a flexible wiring board, and the extending portion 74 covers the side edge 41 in the extending direction of the optical circuit board 40.
- the optical element 110 or the electric element 120 is mounted across the side edge 41 of the optical circuit board 40.
- the mounting area (element mounting area 34) of the optical element 110 or the electric element 120 can be set at a desired position without distinguishing between the electric circuit board 30 and the optoelectric composite board 10, and the degree of freedom of arrangement of elements can be set. It can be said that the high circuit board device 16 is realized.
- solder mounting portions 113 and 114 of the electric element 120 have different heights.
- One solder mounting portion 113 is mounted on the wiring layer 36 exposed on the surface of the electric circuit board 30, and the other solder mounting portion 114 is mounted on the conductor layer 72 in the waveguide facing portion 78 of the electric wiring substrate 70. Yes.
- the solder mounting portion 114 is located higher than the solder mounting portion 113 from the electric circuit board 30, the diameters of the solder mounting portions 113 and 114 are made different so that the electric element 120 is placed horizontally with respect to the electric circuit board 30. It is installed.
- FIG. 7A is a cross-sectional view of the circuit board device 16 according to the present embodiment
- FIG. 7B is a cross-sectional view of the circuit board device 16 according to the modification.
- the wiring layers 36 of the electric circuit board 30 are not shown.
- the circuit board device 16 of the present embodiment is characterized in that a recess 38 into which the optical circuit board 40 can be fitted is formed in the electric circuit board 30. Thereby, the waveguide facing portion 78 and the extending portion 74 can be brought into close contact with the surface of the electric circuit substrate 30 without bending the extending portion 74 of the electric wiring board 70.
- the width dimension of the recess 38 (the horizontal dimension in FIG. 7) is larger than the width dimension of the optical circuit board 40, and the depth dimension of the recess 38 is equal to or greater than the thickness dimension of the optical circuit board 40.
- the circuit board device 16 shown in FIG. 7A includes a through hole 52 as the conductive portion 50, as in the first embodiment.
- the circuit board device 16 shown in FIG. 7B is different from the second embodiment in that an anisotropic conductive film 90 is provided as the conductive portion 50.
- the circuit board device 16 of the present embodiment no step occurs in the electric wiring board 70 even in the vicinity of the side edge 41 of the optical circuit board 40.
- the element mounting region 34 of the element 120 can be secured in a plane over the entire surface of the electric wiring board 70. Further, since the thickness of the electric wiring board 70 is very small, the level difference between the surface of the conductor layer 72 and the surface of the electric circuit board 30 is also small. For this reason, the element mounting area 34 can be secured so as to extend over the electric circuit board 30 and the photoelectric composite board 10, or the element mounting area 34 can be secured across the photoelectric composite board 10. As a result, as shown in FIG. 3, the optical waveguide 42 formed by the optoelectric composite substrate 10 and the optical element 110 and the electric element 120 can be mounted so as to overlap each other over substantially the entire surface of the electric circuit board 30. Is possible.
- FIGS. 8A to 8E are bottom views of the photoelectric composite substrate 10 according to the third to seventh embodiments as viewed from the optical circuit board 40 side.
- the photoelectric composite substrate 10 according to the third embodiment shown in FIG. 8A has a plurality of extending portions 74 extending in a fin shape on both sides of the optical circuit substrate 40 and extending in the longitudinal direction of the photoelectric composite substrate 10. They are arranged intermittently (in the left-right direction in the figure). Optical path conversion mirrors 46 are provided at both ends in the longitudinal direction of the optical circuit board 40.
- the electric wiring board 70 is joined to the electric circuit board 30 (see FIG. 3 and the like) by individually bending a large number of fin-like extending portions 74. Thereby, the optoelectric composite substrate 10 can be mounted on the electric circuit board 30 without the optical element 110 or the electric element 120 mounted on the electric circuit board 30 interfering with the extending portion 74.
- the photoelectric composite substrate 10 of the fourth embodiment shown in FIG. 8B is provided with extending portions 74 at both ends in the longitudinal direction of the optical circuit board 40.
- the direction in which the extending portion 74 extends is not limited to the side in the longitudinal direction of the optical circuit substrate 40.
- the extending portion 74 of the electric wiring board 70 can be used as the element mounting region 34 of the optical element 110 mounted above the optical path conversion mirror 46. As a result, even if the optical path conversion mirror 46 is arranged at the longitudinal end of the optical circuit board 40 or in the very vicinity thereof, the element mounting region 34 of the optical element 110 that transmits and receives light to and from the optical path conversion mirror 46 is insufficient. There is no.
- the extending portion 74 is formed on the entire circumference including the side of the optical circuit substrate 40. That is, the extending portions 74 of the present embodiment are provided so as to protrude from the four sides of the rectangular (band-like) optical circuit board 40, respectively. Further, in the photoelectric composite substrate 10 of the present embodiment, the four corners protruding from the optical circuit substrate 40 are connected to form a circular extending portion 74. Thereby, the optoelectric composite substrate 10 can be stably attached to the electric circuit substrate 30 over the entire circumference regardless of the aspect ratio of the optical circuit substrate 40.
- a large number of core portions 42a are arranged side by side, and the width of the optical circuit substrate 40 is larger than the individual length of the optical waveguide 42 (core portion 42a). It is characterized by being larger.
- the longitudinal direction of the photoelectric composite substrate 10 coincides with the alignment direction of the core portions 42a.
- the extending portion 74 protrudes and extends in the extending direction of the optical waveguide 42 along the longitudinal direction of the photoelectric composite substrate 10.
- an extending portion 74 prepared in advance in a narrow band shape is attached to the main surface of the optical circuit substrate 40 with, for example, an adhesive. It is characterized by being integrated. That is, the electrical wiring board 70 of the present embodiment may be composed of a single member as in the first to sixth embodiments, or may be composed of a plurality of members as in the present embodiment.
- the strip-like extension portions 74 are provided on both sides along the extending direction of the optical waveguide 42, that is, along the opposing long sides of the optical circuit board 40, and approximately half of the width dimension is provided in the optical circuit. It protrudes from the board
- the extension part 74 is provided at an arbitrary position with respect to the optical circuit board 40 and the element mounting region 34. (See FIG. 2). In the case of the present embodiment, it is not necessary to provide the opening 32 (see FIG. 1A) by attaching the extending portion 74 while avoiding the upper portion of the optical path conversion mirror 46.
- the photoelectric composite substrate 10 and the photoelectric composite device 14 of the present invention can form the extending portion 74 at a desired position and shape with respect to the optical waveguide 42 having an arbitrary shape.
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Abstract
Description
(1)光導波路を備える光回路基板と、導体層を含み前記光回路基板に積層された電気配線基板と、を備える光電気複合基板であって、前記電気配線基板が、前記光回路基板よりも延出して形成された延出部を備えるとともに、前記延出部に導通部が設けられていることを特徴とする光電気複合基板。
(2)前記導通部が、前記導体層と前記電気配線基板の光回路基板側の面とを電気接続する上記(1)に記載の光電気複合基板。
(3)前記延出部が、前記光導波路の延在方向に対する少なくとも側方に形成されている上記(1)または(2)に記載の光電気複合基板。
(4)前記延出部が、前記光回路基板の全周に形成されている上記(3)に記載の光電気複合基板。
(5)前記光導波路に光路変換ミラーが設けられており、前記電気配線基板は前記光路変換ミラーを含む局所領域について前記導体層が除去されていることを特徴とする上記(1)から(4)のいずれか一項に記載の光電気複合基板。
(6)前記電気配線基板の表面のうち前記延出部を除く前記光回路基板の上部に、前記光路変換ミラーの位置を示す表示部が形成されている上記(5)に記載の光電気複合基板。
(7)前記電気配線基板がフレキシブル配線基板である上記(1)から(6)のいずれか一項に記載の光電気複合基板。
(8)前記導体層はパターニングされてパッド部が形成されているとともに、前記パッド部と前記電気配線基板の光回路基板側の面とを電気接続するスルーホールが前記導通部として設けられている上記(1)から(7)のいずれか一項に記載の光電気複合基板。
(9)前記導体層と電気接続された異方性導電フィルムが、前記電気配線基板の光回路基板側の面のうち少なくとも前記延出部に被着されている上記(1)から(8)のいずれか一項に記載の光電気複合基板。
(11)前記電気配線基板がフレキシブル配線基板であり、前記延出部が前記光回路基板の延在方向の側縁を覆うように折り曲げられて前記電気回路基板と接続されている上記(10)に記載の回路基板装置。
(12)前記搭載領域が、前記パッド部と前記電気回路基板とに亘って構成されている上記(10)または(11)に記載の回路基板装置。
(14)前記電気配線基板がフレキシブル配線基板であり、前記延出部が前記光回路基板の延在方向の側縁を覆うように折り曲げられて前記電気回路基板と接続され、前記光素子または前記電気素子が、前記側縁をまたいで搭載されていることを特徴とする上記(13)に記載の光電気複合デバイス。
なお、本実施形態では上下方向を規定して説明するが、これは構成要素の相対関係を説明するために便宜的に規定するものであり、本実施形態にかかる製品の製造時や使用時の方向を限定するものではない。
図1Aは本発明の第一実施形態にかかる光電気複合基板10の斜視図である。図1Bは図1AのB-B線断面図であり、図1Cは図1AのC-C線断面図である。図2は本実施形態にかかる回路基板装置16の斜視図である。図3は本実施形態にかかる光電気複合デバイス14の斜視図である。
すなわち、本実施形態の回路基板装置16は、図2に示すように、上記の光電気複合基板10と、光素子110または電気素子120が搭載される電気回路基板30と、を含む。本実施形態の回路基板装置16は、光電気複合基板10が電気回路基板30の表面に局所的に装着されて光電気複合基板10の裏面と電気回路基板30とが電気的に接続され、光電気複合基板10の導体層72がパターニングされてなるパッド部76が、光素子110または電気素子120の搭載領域(素子搭載領域34)の少なくとも一部を構成している。
すなわち、本実施形態の光電気複合デバイス14は、図3に示すように、上記の光電気複合基板10と、電気回路基板30と、光素子110または電気素子120と、を含む。本実施形態の光電気複合デバイス14は、光電気複合基板10が電気回路基板30の表面に局所的に装着されて光電気複合基板10の裏面と電気回路基板30とが電気的に接続され、光電気複合基板10の導体層72がパターニングされてなるパッド部76に光素子110または電気素子120が搭載されていることを特徴とする。
本実施形態において光導波路42、コア部42aおよびクラッド部42bの長さ方向とは図1Bの左右方向をいい、これらの厚み方向は同図の上下方向、幅方向は図1Cの左右方向をいう。本実施形態の光電気複合基板10は帯状をなし、その長手方向と光導波路42の延在方向とは一致している。ただし、本実施形態に代えて、多数のコア部42aを備える光導波路42の場合、光導波路42の長手方向がコア部42aの並び方向となる場合がある(図8Eを参照)。
電気素子120としては、光素子110の駆動素子のほか、LSIやICなどの半導体装置、抵抗器、コンデンサ、インダクタなど各種を用いることができる。駆動素子は、一例として、トランスインピーダンスアンプ(TIA)やリミッティングアンプ(LA)などの増幅器と制御用のドライバICとを組み合わせてなる。
図5は、本実施形態の第一変形例にかかる回路基板装置16の断面図である。
本変形例の光電気複合デバイス14では、光素子110または電気素子120の搭載領域(素子搭載領域34)が、電気配線基板70のパッド部76と電気回路基板30とに亘って構成されている。
図7Aは本実施形態にかかる回路基板装置16の断面図であり、図7Bはその変形例にかかる回路基板装置16の断面図である。電気回路基板30の配線層36はそれぞれ図示を省略している。
14 光電気複合デバイス
16 回路基板装置
30 電気回路基板
32 開口部
34 素子搭載領域
36 配線層
37 凹穴
38 凹部
40 光回路基板
41 側縁
42 光導波路
42a コア部
42b クラッド部
44 光路変換部
46 光路変換ミラー
50 導通部
52 スルーホール
54 樹脂充填部
70 電気配線基板
72 導体層
73 粘着層
74 延出部
76 パッド部
78 導波路対向部
80 アライメントマーク
90 異方性導電フィルム
110 光素子
111 受発光部
113、114 ハンダ実装部
120~124 電気素子
E 端部
M 中間部
Claims (14)
- 光導波路を備える光回路基板と、導体層を含み前記光回路基板に積層された電気配線基板と、を備える光電気複合基板であって、
前記電気配線基板が、前記光回路基板よりも延出して形成された延出部を備えるとともに、
前記延出部に導通部が設けられていることを特徴とする光電気複合基板。 - 前記導通部が、前記導体層と前記電気配線基板の光回路基板側の面とを電気接続する請求項1に記載の光電気複合基板。
- 前記延出部が、前記光導波路の延在方向に対する少なくとも側方に形成されている請求項1または2に記載の光電気複合基板。
- 前記延出部が、前記光回路基板の全周に形成されている請求項3に記載の光電気複合基板。
- 前記光導波路に光路変換ミラーが設けられており、前記電気配線基板は前記光路変換ミラーを含む局所領域について前記導体層が除去されていることを特徴とする請求項1から4のいずれか一項に記載の光電気複合基板。
- 前記電気配線基板の表面のうち前記延出部を除く前記光回路基板の上部に、前記光路変換ミラーの位置を示す表示部が形成されている請求項5に記載の光電気複合基板。
- 前記電気配線基板がフレキシブル配線基板である請求項1から6のいずれか一項に記載の光電気複合基板。
- 前記導体層はパターニングされてパッド部が形成されているとともに、前記パッド部と前記電気配線基板の光回路基板側の面とを電気接続するスルーホールが前記導通部として設けられている請求項1から7のいずれか一項に記載の光電気複合基板。
- 前記導体層と電気接続された異方性導電フィルムが、前記電気配線基板の光回路基板側の面のうち少なくとも前記延出部に被着されている請求項1から8のいずれか一項に記載の光電気複合基板。
- 光導波路を備える光回路基板と、パッド部がパターニングされた導体層を含み前記光回路基板に積層された電気配線基板と、を備える光電気複合基板と、
光素子または電気素子が搭載される電気回路基板と、有し、
前記電気配線基板は、前記光回路基板よりも延出して形成された延出部を備え、
前記延出部に前記導体層と前記電気回路基板とを接続する導通部が設けられ、前記光電気複合基板が前記電気回路基板の表面に局所的に装着されて前記光電気複合基板と前記電気回路基板とが電気的に接続されているとともに、
前記パッド部が前記光素子または前記電気素子の搭載領域の少なくとも一部を構成していることを特徴とする回路基板装置。 - 前記電気配線基板がフレキシブル配線基板であり、前記延出部が前記光回路基板の延在方向の側縁を覆うように折り曲げられて前記電気回路基板と接続されている請求項10に記載の回路基板装置。
- 前記搭載領域が、前記パッド部と前記電気回路基板とに亘って構成されている請求項10または11に記載の回路基板装置。
- 光導波路を備える光回路基板と、パッド部がパターニングされた導体層を含み前記光回路基板に積層された電気配線基板と、を備える光電気複合基板と、
光素子または電気素子が搭載された電気回路基板と、を有し、
前記電気配線基板は、前記光回路基板よりも延出して形成された延出部を備え、
前記延出部に前記導体層と前記電気回路基板とを接続する導通部が設けられ、前記光電気複合基板が前記電気回路基板の表面に局所的に装着されて前記光電気複合基板と前記電気回路基板とが電気的に接続されているとともに、
前記パッド部に前記光素子または前記電気素子が搭載されていることを特徴とする光電気複合デバイス。 - 前記電気配線基板がフレキシブル配線基板であり、前記延出部が前記光回路基板の延在方向の側縁を覆うように折り曲げられて前記電気回路基板と接続され、前記光素子または前記電気素子が、前記側縁をまたいで搭載されていることを特徴とする請求項13に記載の光電気複合デバイス。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013186976A1 (ja) * | 2012-06-14 | 2013-12-19 | 日本メクトロン株式会社 | 光電素子用実装装置及び実装方法 |
JP2020101758A (ja) * | 2018-12-25 | 2020-07-02 | 富士通株式会社 | 光デバイス及び光モジュール |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101108730B1 (ko) * | 2010-06-23 | 2012-02-29 | 삼성전기주식회사 | 광 연성인쇄회로기판 및 이의 제조 방법 |
JP2017168577A (ja) * | 2016-03-15 | 2017-09-21 | 住友電気工業株式会社 | 面発光半導体レーザを作製する方法 |
JP2020086163A (ja) * | 2018-11-27 | 2020-06-04 | Nttエレクトロニクス株式会社 | 光モジュール |
CN110190504B (zh) * | 2019-05-24 | 2020-12-15 | 宁波东立创芯光电科技有限公司 | 半导体激光器阵列封装结构 |
JP7352653B2 (ja) * | 2019-12-20 | 2023-09-28 | 京セラ株式会社 | 光回路基板 |
TWI776601B (zh) * | 2021-07-22 | 2022-09-01 | 先豐通訊股份有限公司 | 具有波導管的線路板結構及其製作方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005064303A (ja) * | 2003-08-15 | 2005-03-10 | Sony Corp | 光電気複合基板装置及びその製造方法 |
JP2008292763A (ja) * | 2007-05-24 | 2008-12-04 | Fuji Xerox Co Ltd | 光電子回路基板 |
JP2009003253A (ja) * | 2007-06-22 | 2009-01-08 | Hitachi Ltd | 光電気混載基板と光電気パッケージとの構造体 |
JP2010049170A (ja) * | 2008-08-25 | 2010-03-04 | Shinko Electric Ind Co Ltd | 光電気配線用パッケージ及び光導波路付リードフレーム |
JP2010128200A (ja) * | 2008-11-27 | 2010-06-10 | Nitto Denko Corp | 光電気混載基板およびその製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4507315B2 (ja) * | 1999-11-24 | 2010-07-21 | 凸版印刷株式会社 | 光・電気配線基板の製造方法 |
JP2006091241A (ja) * | 2004-09-22 | 2006-04-06 | Hitachi Cable Ltd | 光電気複合配線部品及びこれを用いた電子機器 |
JP4962152B2 (ja) * | 2007-06-15 | 2012-06-27 | 日立電線株式会社 | 光電気複合伝送アセンブリ |
JP4613964B2 (ja) * | 2008-01-21 | 2011-01-19 | 富士ゼロックス株式会社 | 光電複合配線モジュールおよび情報処理装置 |
-
2011
- 2011-10-06 US US13/878,099 patent/US20130209028A1/en not_active Abandoned
- 2011-10-06 WO PCT/JP2011/073091 patent/WO2012046801A1/ja active Application Filing
- 2011-10-06 JP JP2012537754A patent/JP5445687B2/ja not_active Expired - Fee Related
- 2011-10-06 TW TW100136257A patent/TW201222045A/zh unknown
- 2011-10-06 CN CN2011800480022A patent/CN103154797A/zh active Pending
-
2013
- 2013-10-31 JP JP2013227376A patent/JP5692334B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005064303A (ja) * | 2003-08-15 | 2005-03-10 | Sony Corp | 光電気複合基板装置及びその製造方法 |
JP2008292763A (ja) * | 2007-05-24 | 2008-12-04 | Fuji Xerox Co Ltd | 光電子回路基板 |
JP2009003253A (ja) * | 2007-06-22 | 2009-01-08 | Hitachi Ltd | 光電気混載基板と光電気パッケージとの構造体 |
JP2010049170A (ja) * | 2008-08-25 | 2010-03-04 | Shinko Electric Ind Co Ltd | 光電気配線用パッケージ及び光導波路付リードフレーム |
JP2010128200A (ja) * | 2008-11-27 | 2010-06-10 | Nitto Denko Corp | 光電気混載基板およびその製造方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013186976A1 (ja) * | 2012-06-14 | 2013-12-19 | 日本メクトロン株式会社 | 光電素子用実装装置及び実装方法 |
CN104471455A (zh) * | 2012-06-14 | 2015-03-25 | 日本梅克特隆株式会社 | 光电元件用安装装置以及安装方法 |
CN104471455B (zh) * | 2012-06-14 | 2016-07-06 | 日本梅克特隆株式会社 | 光电元件用安装装置以及安装方法 |
US10162137B2 (en) | 2012-06-14 | 2018-12-25 | Nippon Mektron, Ltd. | Apparatus and method for mounting photoelectric element |
JP2020101758A (ja) * | 2018-12-25 | 2020-07-02 | 富士通株式会社 | 光デバイス及び光モジュール |
JP7176401B2 (ja) | 2018-12-25 | 2022-11-22 | 富士通株式会社 | 光デバイス及び光モジュール |
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