WO2007114384A1 - 信号伝送機器 - Google Patents
信号伝送機器 Download PDFInfo
- Publication number
- WO2007114384A1 WO2007114384A1 PCT/JP2007/057261 JP2007057261W WO2007114384A1 WO 2007114384 A1 WO2007114384 A1 WO 2007114384A1 JP 2007057261 W JP2007057261 W JP 2007057261W WO 2007114384 A1 WO2007114384 A1 WO 2007114384A1
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- WO
- WIPO (PCT)
- Prior art keywords
- photoelectric conversion
- signal transmission
- transmission device
- wiring
- signal
- Prior art date
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Classifications
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
- H05K1/183—Components mounted in and supported by recessed areas of the printed circuit board
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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
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector 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
- H01L2224/16221—Disposition the bump connector 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
- H01L2224/16225—Disposition the bump connector 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
- H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
- H05K1/112—Pads for surface mounting, e.g. lay-out directly combined with via connections
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09036—Recesses or grooves in insulating substrate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10121—Optical component, e.g. opto-electronic component
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10621—Components characterised by their electrical contacts
- H05K2201/10734—Ball grid array [BGA]; Bump grid array
Definitions
- the present invention relates to a signal transmission device.
- this type of signal transmission equipment there is a laser diode that has a substrate with an optical waveguide formed inside, and inputs light into the optical waveguide in a recess formed in the surface force depth direction of the substrate.
- a device in which the light emitting element is arranged has been proposed (for example, see Patent Document 1).
- the wiring for electrically connecting the driving circuit of the electronic component and the light emitting element disposed in the recess is mounted by mounting an electronic component on which the driving circuit for driving the light emitting element is mounted on the back surface of the substrate. It can be said that the wiring length can be shortened and the response delay of the light emitting element can be reduced.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-174657 (FIG. 6)
- the signal transmission device of the present invention employs the following means in order to achieve at least a part of the above-described object.
- the signal transmission device of the present invention comprises:
- a signal transmission device for transmitting a signal
- a photoelectric conversion module is disposed in the opening of the substrate and converts an electric signal and an optical signal, and at least a part of the wiring from the photoelectric conversion module is exposed on substantially the same plane as the opening end surface of the opening.
- a photoelectric conversion sealing member formed by sealing at least the photoelectric conversion module with a predetermined material;
- a photoelectric conversion module that converts an electric signal and an optical signal is provided in an opening of a substrate on which an electronic component can be mounted, and at least a part of the wiring of the photoelectric conversion module force
- a photoelectric conversion sealing member is provided in which at least the photoelectric conversion module is sealed with a predetermined material so that is exposed on substantially the same plane as the opening end face of the opening. Since at least part of the wiring of the photoelectric conversion module force is exposed on the same plane as the opening end surface of the opening of the board, electrical connection between the wiring of the photoelectric conversion module force and the electronic components mounted on the board Can be performed on substantially the same plane as the opening end face.
- the predetermined material various materials such as translucent epoxy resin and non-translucent epoxy resin can be considered.
- Electronic components include LSIs, ICs (Integrated Circuits), capacitor chips, resistor chips, and electrical connectors that can be electrically connected to cables of other devices.
- the photoelectric conversion sealing member is made of the predetermined material in a state where the photoelectric conversion module and the wiring are arranged in the opening of the substrate.
- the opening may be formed by sealing so as to be substantially flush with the mounting surface on which the electronic component is mounted. Since the opening is sealed with a predetermined material so that it is substantially flush with the mounting surface on which the electronic component is mounted, the electronic component is mounted so that it is applied to the opening when mounting the electronic component on the board. It is also possible to improve the mounting density of electronic components.
- a heat dissipating member attached to the back surface of the mounting surface on which the electronic component of the substrate is mounted, the heat dissipating member, and the photoelectric conversion module It is also possible to provide a heat dissipating wiring that connects the heat conducting member so as to allow heat conduction. If it carries out like this, the heat which generate
- the photoelectric conversion sealing member is attached to the photoelectric conversion module and the wiring, and the module attachment for sealing the photoelectric conversion module together with the predetermined material. It can also have a part.
- the wiring from the photoelectric conversion module can be arranged on the same plane as the opening end face of the opening, and the electrical connection with the electronic component mounted on the substrate is made on the substantially same plane as the opening end face. Therefore, it is possible to input / output electric signals to / from electronic components at a higher speed.
- the module mounting portion is provided with a connection terminal for electrically connecting the wiring to a terminal provided on the mounting surface on the outer peripheral side of at least a part of the opening of the substrate. You can also By doing so, it is possible to more easily electrically connect the wiring from the photoelectric conversion module and the mounted electronic component using the connection terminals provided in the module mounting portion.
- the photoelectric conversion module is arranged so that an optical signal can be input and output to the optical waveguide, and converts the optical signal and the electric signal. It can also be a module having an electronic circuit that inputs and outputs electrical signals to and from the element.
- the photoelectric conversion module is configured such that the electronic circuit is disposed in the vicinity of the photoelectric conversion element, and the photoelectric conversion element and the electronic circuit are linearly connected by wiring in the module. You can also In this way, the wiring length of the internal wiring of the module can be shortened, and the electronic circuit is arranged at a position relatively far from the photoelectric conversion element, or the photoelectric conversion element and the electronic circuit are linearly connected by the internal wiring of the module.
- the “photoelectric conversion element” includes a light emitting element that converts an inputted electric signal into an optical signal and a light receiving element that converts an inputted optical signal into an electric signal.
- the “electronic circuit” includes a driving circuit that outputs an electric signal to the light emitting element to drive the light emitting element and an amplifier circuit that amplifies the electric signal input from the light receiving element.
- the opening is a recess formed in a depth direction from a mounting surface on which the electronic component is mounted or a through hole penetrating from the mounting surface to the back surface of the mounting surface. It can also be formed as a hole.
- the optical waveguide may be formed in the surface direction of the substrate. In this way, an optical signal can be propagated in the surface direction of the substrate.
- FIG. 1 is a plan configuration diagram showing an outline of a configuration of a signal transmission device 20 as an embodiment of the present invention on which LSI packages 10a and 10b are mounted.
- FIG. 2 is a cross-sectional configuration diagram showing a configuration of a cross section taken along line AA in FIG.
- FIG. 3 is a plan configuration diagram showing an outline of the configuration of a signal transmission device 120 as a second embodiment of the present invention on which LSI packages 10a and 10b are mounted.
- FIG. 4 is a cross-sectional configuration diagram showing a configuration of a cross section taken along line BB in FIG. 3.
- FIG. 5 is a configuration diagram showing an outline of a configuration of a signal transmission device 220 of a modified example.
- FIG. 6 is a configuration diagram showing an outline of a configuration of a signal transmission device 320 of a modified example.
- FIG. 7 is a configuration diagram showing an outline of a configuration of a signal transmission device 420 of a modified example.
- FIG. 8 is a plan configuration diagram showing an outline of a configuration of a signal transmission device 120B as a modified example.
- FIG. 9 is a configuration diagram showing an outline of a configuration of a signal transmission device 520 according to a modification.
- FIG. 1 shows a first embodiment of the present invention in which LSI packages 10a and 10b having a plurality of pins for data input / output and power supply pins are mounted, and signals to be input / output to / from LSI packages 10a and 10b are transmitted.
- FIG. 2 is a plan configuration diagram showing an outline of the configuration of the signal transmission device 20 as one embodiment, and FIG. 2 is a sectional configuration diagram showing a configuration of a cross section taken along line AA in FIG.
- the signal transmission device 20 is disposed on each of the recesses 32a and 32b, and the substrate 30 mounted so that the LSI package 10a, 1 Ob exerts a force on the recesses 32a and 32b formed in the depth direction.
- the heat radiating members 90a and 90b are provided.
- the substrate 30 is configured as a multilayer wiring board in which six optical waveguides 34 for propagating light are formed substantially parallel to the surface direction, and the recesses 32a and 32b are optical waveguides on both ends of the optical waveguide 34. The end of the path 34 is formed to be exposed.
- the optical waveguide 34 is configured as a light waveguide having a structure in which a refractive index (not shown) is relatively high and a core having a material force is not illustrated, and the refractive index is lower than that of the core and surrounded by a clad having a material force. The light mainly travels through a core (not shown).
- power supply wiring for supplying power supply potential and ground potential to the photoelectric conversion modules 42 and 62 from the power supply and ground (not shown) mounted on the surface to the photoelectric conversion modules 42 and 62 is also provided on the substrate 30.
- heat radiation wires 38a, 38b, 38c, and 38d are provided to connect the heat radiation members 90a and 90b on the back surface to each other so as to conduct heat.
- the photoelectric conversion sealing members 40, 60 are formed by extending wirings 44, 64 extending upward from the photoelectric conversion modules 42, 62 to the open end surfaces of the recesses 32a, 32b, that is, the substrates of the recesses 32a, 32b.
- the recesses 32a and 32b are formed so as to be sealed by the resin sealing parts 45 and 65 made of a translucent epoxy resin while being exposed on substantially the same surface as the surface of 30.
- the photoelectric conversion modules 42 and 62 are respectively placed on the bottoms of the molds having substantially the same shape as the recesses 32a and 32b.
- a terminal 14a is provided on the wiring 44 exposed at the opening end face of the recess 32a, and the signal pin 12a of the LSI package 10a is placed on the terminal 14a, and the wiring 44, the terminal 14a, Each signal pin 12a is electrically connected. That is, the photoelectric conversion module 42 inputs / outputs an electric signal to / from the LSI package 10a via the wiring 44, the terminal 14a, and the signal pin 12a.
- the terminal 14b and the signal pin 12b of the LSI package 10b are placed in order on the wiring 64 exposed at the opening end face of the recess 32b, and the wiring 64, the terminal 14b, and the signal pin 12b are Each is electrically connected, and the photoelectric conversion module 62 inputs and outputs an electrical signal to and from the LSI package 10a via the wiring 44, the terminal 14a, and the signal pin 12a.
- the wirings 44 and 46 of the photoelectric conversion modules 42 and 62 are exposed on substantially the same surface at the opening end faces of the recesses 32a and 32b, respectively, so that wiring from the photoelectric conversion modules 42 and 62 is performed. There is no need to pass through the substrate.
- the wiring length from the photoelectric conversion module 42, 62 force to the LSI knockouts 10a, 10b should be shorter than that of the mode in which the wiring from the photoelectric conversion module is passed through the substrate.
- electrical signals can be input and output between the photoelectric conversion modules 42 and 62 and the LSI packages 10a and 10b at a relatively high speed.
- the opening end surfaces of the recesses 32a and 32b are sealed so as to be substantially flush with the surface of the substrate 30, as illustrated in FIGS. 1 and 2, the LSI packages 10a and 10b are placed on the recesses 32a and 32b.
- the mounting density can be improved as compared with a substrate in a mode that cannot be disposed on the recesses 32a and 32b.
- the LSI packages 10a and 10b are arranged such that the signal pins 12a and 12b for inputting / outputting signals at a relatively high speed are placed on the recesses 32a and 32b.
- the signal pins of the LSI packages 10a and 10b not shown.
- Pins connected to the power supply, pins not shown, grounded pins, not shown, signal pins that input and output signals at a relatively low speed are arranged on the recesses 32a and 32b so that no force is applied.
- the pins arranged so as not to be subjected to force on the recesses 32a and 32b are connected to the electrode pattern patterned on the surface of the substrate 30. The reason why the LSI packages 10a and 10b are arranged on the substrate 30 will be described later.
- the photoelectric conversion modules 42 and 62 include an electro-optical conversion unit 46 that converts an electrical signal into an optical signal, and a photoelectric conversion unit 66 that converts the optical signal into an electrical signal.
- the photoelectric conversion unit 46 of the photoelectric conversion module 42 is arranged so as to face the photoelectric conversion unit 66 of the photoelectric conversion module 62 with the three optical waveguides 34 out of the six optical waveguides 34 sandwiched therebetween.
- the photoelectric conversion unit 66 of the photoelectric conversion module 42 is arranged so as to face the electrical / optical conversion unit 46 of the photoelectric conversion module 62 with the remaining three optical waveguides 34 therebetween.
- the electro-optic converter 46 is positioned so that light can be input to the optical waveguide 34 exposed in the recess 32a.
- Laser diode 47 arranged in a mounted manner, a driving IC 48 for driving the laser diode 47, and an interposer 49 in which the laser diode 47 and the driving IC 48 are mounted on the surface and formed as a printed wiring board. It is configured.
- the laser diode 47 is electrically connected to the driving IC 48 by a pattern wiring 50 patterned on the surface of the interposer 49 or wire bonding (not shown).
- the laser diode 47 is electrically connected to the internal power supply wiring, not shown in the figure of the interposer 49 electrically connected to the power supply wiring 36a, 36b of the substrate 30, and is required by the power supply wiring 36a, 36b. Power is being supplied.
- the body of the laser diode 47 is attached so that the heat of the laser diode 47 is conducted to the heat radiation electrode 54 on the surface of the interposer 49.
- the heat dissipating electrode 54 is connected to the heat dissipating internal wiring 56 of the interposer 49 connected to the heat dissipating connection wiring 38a of the substrate 30 so as to be able to conduct heat. In this way, heat is conducted from the laser diode 47 to the heat radiating member 90a via the heat radiating electrode 54, the heat radiating internal wiring 56, and the heat radiating connection wiring 38a. 47 can be prevented from reaching a high temperature.
- the driving IC 48 is electrically connected to the wiring 44 exposed in the recess 32a, and a relatively high-speed electric signal is input from the signal pin 12a of the LSI package 10a.
- the driving IC 48 is electrically connected to an internal power supply wiring (not shown) of the interposer 49 electrically connected to the power supply wirings 36a and 36b of the substrate 30, and is required by the power supply wirings 36a and 36b. Power is being supplied.
- the main body of the driving IC 48 is attached to the heat radiation electrode 59 on the surface of the interposer 49.
- the heat dissipating electrode 59 is connected to the heat dissipating connection wiring 38b of the substrate 30 and the heat dissipating internal wiring 61 of the interposer 49 connected so as to be able to conduct heat. In this way, heat is conducted from the driving IC 48 to the heat dissipation member 90a via the heat dissipation electrode 59, the heat dissipation internal wiring 61, and the heat dissipation connection wiring 38b.
- the IC48 can be prevented from reaching a high temperature.
- the photoelectric conversion unit 66 is a photodiode 67 that is positioned so as to receive light output from the end face of the optical waveguide 34 exposed in the recess 32b, and an electrical signal that also outputs the photodiode 67 force.
- the photodiode 67 is electrically connected to the amplification IC 68 by pattern wiring 70 patterned on the surface of the interposer 69, wire bonding (not shown), or the like.
- the photodiode 67 is electrically connected to an internal power supply wiring (not shown) of the interposer 69 electrically connected to the power supply wirings 36a and 36b of the substrate 30, and is required by the power supply wirings 36a and 36b. Power is being supplied.
- the main body of the photodiode 67 is attached to a heat radiation electrode 74 formed on the surface of the interposer 69.
- the heat dissipation electrode 74 is connected to the heat dissipation internal wiring 76 of the interposer 69 connected to the heat dissipation connection wiring 38c of the substrate 30 so as to be capable of heat conduction.
- the photodiode 67 can be dissipated by the heat dissipation member 90b. Can be prevented from reaching a high temperature.
- the amplification IC 68 is electrically connected to the wiring 64 exposed in the recess 32b, and outputs an electrical signal to the signal pin 12b of the LSI package 10b.
- the amplifying IC 68 is electrically connected to a power supply internal wiring (not shown) of the interposer 69 electrically connected to the power supply wirings 36a and 36b of the substrate 30, and necessary power supply is performed by the power supply wirings 36a and 36b.
- the main body of the amplifying IC 68 is attached to a heat radiation electrode 80 formed on the surface of the interposer 69 so as to allow heat conduction.
- the heat dissipating electrode 79 is connected to the heat dissipating internal wiring 81 of the interposer 69 connected to the heat dissipating connection wiring 38d of the substrate 30 so as to conduct heat. In this way, heat is conducted from the amplification IC 68 to the heat radiation member 90b via the heat radiation electrode 79, the heat radiation internal wiring 81, and the heat radiation connection wiring 3 8d. The IC68 can be prevented from reaching a high temperature.
- the output electrical signal is input to the driving IC 48 of the electro-optical conversion unit 46 of the photoelectric conversion module 42.
- the driving IC 48 drives the laser diode 47 in accordance with the input electric signal to
- the diode 47 outputs an optical signal corresponding to the electrical signal. That is, the electric signal input from the signal pin 12a is converted into an optical signal by the electro-optical conversion unit 46.
- the converted optical signal is also input into the optical waveguide 34 by the end force exposed in the recess 32a of the optical waveguide 34, propagates in the optical waveguide 34, and is output from the end exposed in the recess 32b of the optical waveguide 34.
- the optical signal output from the optical waveguide 34 is received by the photodiode 67 of the photoelectric conversion unit 66 of the photoelectric conversion module 62, and the photodiode 67 outputs an electrical signal corresponding to the received optical signal to the amplification IC 68. Then, the signal is amplified by the amplification IC 68. That is, the optical signal output from the optical waveguide 34 is converted into an electrical signal by the photoelectric conversion unit 66. The converted electrical signal is input to the signal pin 12b of the LSI package 10b. As described above, the signal transmission device 20 transmits the electrical signal as an optical signal while the electrical signal output from the signal pin 12a of the LSI package 10a is input to the signal pin 12b of the LSI package 10b. It is possible to transmit signals at a higher speed than a printed circuit board with only a printed circuit board.
- the substrate 30 only the signal of the signal pin that inputs and outputs signals at a relatively high speed of the LSI package 10a is transmitted using the photoelectric conversion modules 42 and 62 and the optical waveguide 34, and is used for other power supplies.
- the power supply potential with a low pin force and the low-speed signal with a signal pin force that inputs and outputs signals at a relatively low speed are transmitted using an electrode pattern formed on the mounting surface of the substrate 30. Therefore, only signals that need to be transmitted at high speed can be transmitted using the photoelectric conversion modules 42 and 62 and the optical waveguide 34.
- the wirings 44 and 64 from the photoelectric conversion modules 42 and 62 are exposed on substantially the same surface at the opening end surfaces of the recesses 32a and 32b.
- the wiring length from the photoelectric conversion module 42, 62 force to the LSI knockouts 10a, 10b can be shortened as compared with the case where the wiring from the photoelectric conversion module is passed through the substrate.
- electrical signals can be input / output between the photoelectric conversion modules 42 and 62 and the LSI knockouts 10a and 10b at a higher speed.
- the photoelectric conversion modules 42 and 62 which have a large amount of wiring 44 and 64, are exposed on the same plane as the open end faces of the recesses 32a and 32b, so the photoelectric conversion modules 42 and 62 and the signal pins 12a of the LSI packages 10a and 10b 12b can be more easily connected to each other through the terminals 14a and 14b.
- the recess 32a, 32b force LSI Since the package is sealed so that it is substantially flush with the mounting surface of the package 10a, 10b, the LSI package 10a, 10b can be placed so that a part of the LSI package 10a, 10b covers the recess 32a, 32b. And the mounting density can be improved.
- the laser diode 47, the driving IC 48, the photodiode 67, and the amplification IC 68 can radiate heat using the heat radiation members 90a and 90b on the back surface, the laser diode 47, the driving IC 48, the photodiode 67, and the amplification IC68 can be prevented from reaching high temperature.
- the LSI packages 10a and 10b are placed on the recesses 32a and 32b so that a part of the LSI packages 10a and 10b is applied, but the LSI packages 10a and 10b are mounted on the recesses 32a and 32b. It can be placed like this!
- the recesses 32a and 32b are sealed so that 64 extends upward from the interposers 49 and 69 of the photoelectric conversion modules 42 and 62 and is exposed at the opening end surfaces of the recesses 32a and 32b.
- 62 force lines 44, 64 can be taken through any path in the middle as long as they are sealed so that they are exposed to at least the open end faces of the S forces 32a, 32b, for example, interposer 49, 69 Internal force, etc. Passing through the bottom wall of the four corners 32a, 32b, the marginal force between the four corners 32a, 32b between the J wall and the photoelectric conversion modules 42, 62. It may be formed so as to extend from the bottom of the recesses 32a, 32b along the side walls of the recesses 32a, 32b from the inside of the interposers 49, 69 so as to be exposed at the opening end face.
- heat that does not need to be radiated by the 1S laser diode 47, the driving IC 48, the photodiode 67, and the amplifying IC 68 is provided with the heat radiating members 90a and 90b on the back surface. If it only occurs, the heat dissipating members 90a, 90b and the heat dissipating wires 38 a, 38b, 38c, 38d may not be provided! In this case, the interposers 49, 69 may be used as the heat dissipating electrodes 54, 59, 74, 79, inner radiant lines 56, 61, 76, 81 for heat dissipation!
- the power supply wirings 36a and 36b pass from the mounting surface of the LSI packages 10a and 10b and are disposed on the bottom surfaces of the recesses 32a and 32b.
- the wirings 36a and 36b are arranged so that power can be supplied to the photoelectric conversion modules 42 and 62.
- the surface force of the photoelectric conversion sealing members 40, 60 is disposed on the surface of the interposers 49, 68 through the resin sealing portions 45, 65!
- FIG. 3 is a plan configuration diagram showing an outline of the configuration of the signal transmission device 120 of the second embodiment
- FIG. 4 is a sectional configuration diagram showing a configuration of a cross section taken along line BB in FIG.
- the signal transmission device 120 of the second embodiment has the same configuration as the signal transmission device 20 of the first embodiment, such as the LSI packages 10a and 10b being mounted on the substrate. Therefore, in order to avoid redundant description, the same components as those of the signal transmission device 20 of the first embodiment are denoted by the same reference numerals in the configuration of the signal transmission device 120 of the second embodiment, and the description thereof is omitted. Is omitted.
- the signal transmission device 120 is disposed on each of the substrate 130 having the through holes 132a and 132b through which the surface force on which the LSI packages 10a and 10b are mounted also penetrates the back surface, and the through holes 132a and 132b.
- photoelectric conversion sealing members 140 and 160 in which photoelectric conversion modules 142 and 162 that convert electric signals input and output from 10b into optical signals are sealed.
- the substrate 130 is a signal transmission device according to the first embodiment in that it is configured as a multilayer substrate, an optical waveguide 34 is formed, and power supply wirings 36a and 36b are provided. It has the same configuration as 20.
- the through holes 132a and 132b are formed so that the ends on both ends of the optical waveguide 34 are exposed inside. Terminals 14a and 14b electrically connected to the signal pins 12a and 12b of the LSI packages 10a and 10b are provided on the outer peripheral side of the through holes 132a and 132b on the surface of the substrate 130.
- the power supply wirings 36a and 36b are exposed to the surface of the substrate 130 through the via holes 137a and 137b formed to reach the wiring layer where the power supply wiring (not shown) of the substrate 130 is provided. .
- the photoelectric conversion modules 142 and 162 of the photoelectric conversion sealing members 140 and 160 have the same configuration as the photoelectric conversion modules 42 and 62 of the first embodiment except that they do not have the interposers 4 9 and 69. is doing.
- the photoelectric conversion sealing members 140 and 160 are a resin sealing portion that pierces the module mounting joints 192a and 192b attached with the photoelectric conversion module 142 and 162, and seals 132a and 132b.
- the photoelectric conversion modules 142 and 162 are penetrated by 145 and 165 and sealed in 132a and 132b.
- the photoelectric conversion modules 142 and 162 have self-powered lines 44 and 64 that are exposed on the surface side of the substrate 130 of the resin sealing portions 145 and 165, and are formed in the through holes 132a and 132b. It is formed in a shape extending to the outer peripheral side, and is attached to the module mounting portions 192a and 192b.
- the photoelectric conversion modules 42 and 62 are attached to the module mounting portions 192a and 192b at the bottom of the mold having substantially the same shape as the through holes 132a and 132b.
- the thickness of the wirings 44 and 64 and the connection terminals 194a and 194b are very thin compared to the thickness of the substrate 130, that is, the surface of the substrate 130, that is, the opening end face of the through holes 132a and 132b.
- the surface on the surface side of the substrate 130 in the resin sealing portions 4 5 and 65 can be regarded as substantially the same surface.
- Power is supplied to the connecting terminals 194a and 194b and the photoelectric conversion modules 42 and 62 electrically connected to the terminals 14a and 14b of the substrate 130 at the ends extending to the outer peripheral sides of the through holes 132a and 132b of the wirings 44 and 64
- the connection terminals 196a and 196b electrically connected to the power supply internal wiring (not shown) and the power supply wirings 36a and 36b of the substrate 130 are attached.
- the photoelectric conversion module 142 inputs and outputs electrical signals to the LS I package 10a via the wiring 44, connection terminal 194a, terminal 14a, and signal pin 12a.
- the photoelectric conversion module 162 has wiring 64, connection terminal 194b, and terminal 14b.
- connection terminals 194a, 194b, 196a, 196b are used to input optical signals output from the photoelectric conversion modules 142, 162 ⁇ laser diode 47 to the optical waveguide 34 or to the optical signal power photodiode 67 output from the optical waveguide 34.
- the photoelectric conversion modules 142 and 162 can be connected to the LSI packages 10a and 10b only on the surface side of the substrate 130 by extending to the outer peripheral side on 132b. Therefore, electric signals can be input and output at higher speed between the photoelectric conversion modules 142 and 162 and the signal pins 12a and 12b of the LSI packages 10a and 10b.
- the power is transferred more quickly between the photoelectric conversion modules 142 and 162 and the LSI packages 10a and 10b.
- Qi signals can be input and output.
- the wirings 44 and 64 from the photoelectric conversion modules 142 and 162 are formed in a shape that is exposed on the surface side of the substrate 130 of the resin sealing portions 145 and 165 and extends to the outer peripheral side of the through holes 132a and 132b.
- connection terminals 194a, 194b provided at the end extending to the outer peripheral side Since it is electrically connected to the signal pin 12a of the LSI package 10a, 10b using the connection terminals 194a, 194b provided at the end extending to the outer peripheral side, the LSI package 10a, Connection to the signal pins 12a and 12b of 10b can be performed.
- the wirings 44 and 64 of the photoelectric conversion modules 142 and 162 are exposed on substantially the same surface as the opening end surfaces of the through holes 132a and 132b of the substrate 130. Therefore, the wirings 44 and 64 are extended to the outer peripheral side on the through holes 132a and 132b, and the photoelectric conversion modules 142 and 162 and the LSI packages 10a and 10b can be connected only on the surface side of the substrate 130. . Therefore, electric signals can be input and output at higher speed between the photoelectric conversion modules 142 and 162 and the signal pins 12a and 12b of the LSI packages 10a and 10b.
- the electric signals can be input / output between the photoelectric conversion modules 142 and 162 and the LSI packages 10a and 10b at high speed.
- the wirings 44 and 64 from the photoelectric conversion modules 142 and 162 are formed in a shape that is exposed on the surface side of the substrate 130 of the resin sealing portions 145 and 165 and extends to the outer peripheral side of the through holes 132a and 132b. Since the connection terminals 1 94a and 194b are provided at the ends extending to the outer peripheral side, the connection terminals 194a and 194b are used to connect to the signal pins 12a of the LSI package 1 Oa and 10b relatively easily. be able to.
- connection terminals 194a, 194b, 196a, 196b are connected to the L SI packages 10a, 10b and the photoelectric conversion modules 142, 162, as well as to the photoelectric conversion module.
- the laser diode 47 and photodiode 67 of 142 and 162 are adjusted in height so that optical signals can be input and output to the optical waveguide 34.
- connection terminals 194a, 194b, 196a, and 196b 10a and 10b and photoelectric conversion modules 142 and 162 need only be formed so that they can be electrically connected, and the height is not adjusted so that the laser diode 47 and the photodiode 67 can input and output optical signals to and from the optical waveguide 34. May be.
- the spacer 283 is attached to the module attaching portions 192a and 192b, and the spacer 283 performs photoelectric conversion.
- the height of the laser diode 47 and photodiode 67 of the modules 142 and 162 can be adjusted.
- the through holes 132a and 132b are formed in the substrate 130.
- the substrate 330 and the photoelectric conversion sealing member 3 of the signal transmission device 320 of the modification of FIG. As exemplified by 40 and 360, the substrate 330 may be formed with recesses 332a and 332b in the depth direction due to surface force instead of the through holes 132a and 132b.
- the photoelectric conversion sealing material 340, 360 can be placed on the four sides 332a, 332b, and the photoelectric conversion module 142, As long as the shape is such that 162 can be sealed, a gap 392 may be provided between the resin sealing portions 345 and 365 and the bottoms of the recesses 332a and 332b. Therefore, the degree of freedom in forming the recesses 332a and 332b in the substrate 330 is large.
- the through holes 132a and 132b having substantially constant widths in the depth direction from the surface of the substrate 130 are formed.
- the surface force of the substrate 430 may also be formed as through holes 432a and 432b having different widths in the depth direction.
- the module mounting part 192a, 192b is formed with the same width as the mounting part 192a, 192b to the depth to the height of the mounting part 192a, 192b. If formed with the same width as that of the oil sealing portions 45 and 65, the surface of the substrate 430 and the surfaces of the photoelectric conversion sealing members 140 and 160 can be made substantially flush with each other.
- the via holes 137a and 137b are formed to a depth that reaches the wiring layer in which the power supply wiring (not shown) of the substrate 130 is provided.
- the via holes 137a and 137b may be formed to penetrate from the front surface to the back surface of the substrate 130. In this way, connection to all the wiring layers (not shown) of the substrate 130 becomes possible.
- the photoelectric conversion modules 142, 162 and the wirings 44, 64 are attached to the module attachment portions 192a, 192b, but the module attachments 192a, 192b
- the electronic component force may also be electrically connected to the photoelectric conversion modules 142 and 162 attached to the module attaching portions 192a and 192b through via holes (not shown) provided in the module attaching portion 192.
- the module mounting portions 192a and 192b are configured as multilayer wiring boards!
- the wirings 44 and 64 from the photoelectric conversion modules 42 and 62 are connected to the LSI packages 10a and 10b mounted on the surface of the substrate 130 via the connection terminals 194a and 194b.
- a via hole reaching the signal wiring layer from the surface of the substrate 130 is provided.
- the wirings 44 and 64 from the photoelectric conversion modules 42 and 62 are connected to the signal wiring layer in the substrate 130 through wirings electrically connected to the wirings 44 and 64 from the photoelectric conversion modules 42 and 62 in the via holes. It may be a thing.
- a photoelectric conversion module is provided by providing via holes in the substrate 130 that also penetrate the back side of the surface force and passing the wires electrically connected to the wires 44 and 64 through the via holes.
- 42 and 62 may be electrically connected to the LSI sockets 10a and 10b.
- the wiring from the photoelectric conversion modules 42 and 62 and the LSI packages 10a and 10b mounted on the backside of the substrate 130 can be connected with a single via hole, improving the high-frequency characteristics. Can be planned.
- the laser diode 47, the driving IC 48, the photodiode 67, and the amplification IC 68 of the photoelectric conversion modules 142 and 162 are connected to the resin sealing portions 145 and 16 5 and the module mounting portion.
- the power to be sealed with 192a and 192b
- the resin sealing parts 145 and 16 5 are paired with the module mounting parts 192a and 192b, respectively, and at least the laser diode 47, the driving IC 48, the photodiode 67, and the amplification IC 68 Any shape can be used as long as the shape can be sealed.
- each resin seal is assumed to be provided with a resin sealing part formed in a shape covering the laser diode 47 of the photoelectric conversion module 142 and another resin sealing part formed in a shape covering the driving IC 48.
- the laser diode 47 and the driving IC 48 may be sealed between the stop portion and the module mounting portion 192a.
- a driving IC 48 is arranged in the vicinity of the laser diode 47, and the laser diode 47 and the driving IC 48 are linearly connected by pattern wiring 50 or wire bonding (not shown).
- an amplifying IC 68 may be arranged in the vicinity of the photodiode 67 in the photoelectric conversion unit 66, and the photodiode 67 and the amplifying IC 68 may be linearly connected by pattern wiring 70 or wire bonding (not shown).
- the wiring length of the pattern wirings 50 and 70 can be made relatively short, for example, about several millimeters, and between the laser diode 47 and the driving IC 48 and between the photodiode 67 and the amplification IC 68. Electric signals can be transmitted at a relatively high speed.
- two signal wirings (wirings 44 in the signal transmission device 120 of the second embodiment) for connecting the driving IC 48 and the LSI package 10a are arranged close to each other in parallel.
- Wiring 4 4a, 44b, two signal wiring lines (wiring 64 in the signal transmission device 120 of the second embodiment) that connect the amplification IC 68 and the LSI package 10b are arranged in parallel and close to each other.
- the driving IC48 and the LSI package 10a By configuring the wiring 64a and 64b and transmitting signals by differential transmission between the driving IC48 and the LSI package 10a or between the amplifying IC68 and the LSI package 10b, the driving IC48 and the LSI package 10a Signal can be transmitted at high speed between the amplifier IC 68 and the LSI package 10b, and signal quality degradation can be suppressed. As a result, a signal can be transmitted at high speed from the LSI package 10a to the LSI package 10b. For example, a signal can be transmitted at a transmission rate of several hundred Mbps to several lOGbps.
- the laser diode 47 and the driving IC 48 are mounted on one photoelectric conversion module!
- the temperature of the laser diode 47 and the driving IC 48 becomes approximately the same, and the laser diode 47 with respect to the operation fluctuation due to the temperature.
- the driving IC 48 can be feedback-controlled by estimating the same temperature.
- the photodiode 67 and amplifier IC68 are also mounted on a single photoelectric conversion module, so feedback control is performed by estimating that the photodiode 67 and amplifier IC68 are at the same temperature against fluctuations in operation due to temperature. can do.
- the photoelectric conversion modules 42 and 62 are sealed in the resin sealing portions 145 and 165.
- the pattern wiring 50 and the photodiode 67 between the laser diode 47 and the driving IC 48 are amplified. Since the wiring length of the pattern wiring 70 with the IC 68 is relatively short, electromagnetic interference from the photoelectric conversion modules 42 and 62 to the outside and from the outside to the photoelectric conversion modules 42 and 62 Electromagnetic interference can be suppressed.
- the photoelectric conversion modules 42 and 62 are provided with the electro-optical conversion unit 46 and the photoelectric conversion unit 66.
- the modules 42 and 62 may include a plurality of electro-optical conversion units 46 and photoelectric conversion units 66, or may include one of the electro-optical conversion unit 46 and the photoelectric conversion unit 66.
- the photoelectric conversion modules 42 and 62 include either one of the electro-optic conversion unit 46 and the photoelectric conversion unit 66, one module converts the electrical signal into an optical signal and inputs it to the optical waveguide 34, and the other This module only has to receive the optical signal output from the optical waveguide 34 and convert it into an electrical signal.
- the photoelectric conversion module 62 when the photoelectric conversion module 42 includes only the electro-optical conversion unit 46, the photoelectric conversion module 62 performs photoelectric conversion.
- the photoelectric conversion module 42 may include only the photoelectric conversion unit 66 when the photoelectric conversion module 62 includes only the electro-optical conversion unit 46.
- the photoelectric conversion modules 42 and 62 include signal pins 12a and 12b that output data at a relatively high speed of the LSI packages 10a and 10b, respectively. Connected force It can be connected to the signal pins that output data at relatively low speed in LSI packages 10a and 10b!
- the resin sealing portions 45, 65, 145, and 165 may be formed of any material that is translucent.
- the optical signal output from the laser diode 47 is directly input to the optical waveguide 34 without the resin sealing portions 45, 65, 145, 165 interposed between the laser diode 47 or the photodiode 67 and the optical waveguide 34.
- the resin sealing portions 45, 65, 145 and 165 are not transparent epoxy resin. It's a good idea to use other non-translucent materials.
- the electro-optical conversion unit 46 of the photoelectric conversion modules 42, 62, 142, 162 emits light in the plane direction of the substrates 30, 130.
- a laser diode 47 is used, but it is a light-emitting element that emits light when driven by an electrical signal. Anything is acceptable.
- a light emitting device that emits light in a depth direction perpendicular to the surface direction of the substrates 30 and 130 may be used. In this case, the direction of the light emitted in the depth direction is changed to the surface direction to the optical waveguide 34. What is necessary is just to provide the mirror which inputs.
- the light output from the laser diode 47 of the electro-optical conversion unit 46 of the photoelectric conversion modules 42, 62, 142, and 162 is used as the optical waveguide 34. It is assumed that the lens that couples the light to the optical waveguide 34 or the photodiode 67 is not provided in the portion that inputs light to the optical waveguide 34 or the portion that inputs the light output from the optical waveguide 34 to the photodiode 67. A lens may be provided.
- the photoelectric conversion unit 66 of the photoelectric conversion modules 42, 62, 142, 162 receives light in the plane direction of the substrates 30, 130.
- Any light-receiving element that receives the force light and converts it into electricity can be used. Further, it may be a light receiving element that receives light from a depth direction perpendicular to the surface direction of the substrates 30 and 130. In this case, the light output from the optical waveguide 34, that is, the light traveling in the surface direction.
- a mirror that changes the direction to the depth direction and inputs to the light receiving element may be provided.
- a force is assumed in which a plurality of optical waveguides 34 are arranged in parallel to the plane direction of the substrates 30, 130.
- a plurality of them may be arranged in parallel in the depth direction of the substrate 530.
- the photoelectric conversion modules 542 and 562 of the photoelectric conversion sealing members 540 and 560 include a plurality of laser diodes 47 and photodiodes 67 in the vertical direction jigs 596a and 596b in the depth direction on the substrate 530. It can be installed side by side.
- the force is assumed to include six optical waveguides 34.
- the number of optical waveguides 34 is not limited. For example, more than six. It may be less than six, or may be one.
- the photoelectric conversion modules 42 and 62 only need to include the number of laser diodes 47 and photodiodes 67 corresponding to the optical waveguide 34.
- the photoelectric conversion module 42 1 laser diode 47, photoelectric conversion module 62 is photodiode 67 It's also possible to have one!
- the force that the optical waveguide 34 is formed in the plane direction of the substrates 30, 1 30 is the optical waveguide 34 is the substrate 30, 130. It may be formed in any direction.
- the recesses 32a and 32b of the substrate 30 and the through holes 132a and 132b of the substrate 130 are formed so that the end portions of the optical waveguide 34 are exposed, and the photoelectric conversion sealing members 40, 60, 140, and 160 are
- the photoelectric conversion modules 42, 62, 142, 162 may be arranged in the recesses 32 a, 32 b and the through holes 132 a, 132 b so that an optical signal with a high power can be input and output to the optical waveguide 34.
- the LSI package 10a, 10b force S is mounted on the substrates 30, 130, and the photoelectric conversion module 42, 62, 142, 162 force is mounted.
- the present invention can be used in the signal transmission equipment manufacturing industry and the like.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2008508684A JP4876263B2 (ja) | 2006-04-03 | 2007-03-30 | 信号伝送機器 |
US12/225,921 US8014638B2 (en) | 2006-04-03 | 2007-03-30 | Signal transmission device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006-102140 | 2006-04-03 | ||
JP2006102140 | 2006-04-03 |
Publications (1)
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WO2007114384A1 true WO2007114384A1 (ja) | 2007-10-11 |
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PCT/JP2007/057261 WO2007114384A1 (ja) | 2006-04-03 | 2007-03-30 | 信号伝送機器 |
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US (1) | US8014638B2 (ja) |
JP (1) | JP4876263B2 (ja) |
WO (1) | WO2007114384A1 (ja) |
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JPWO2007114384A1 (ja) | 2009-08-20 |
US8014638B2 (en) | 2011-09-06 |
JP4876263B2 (ja) | 2012-02-15 |
US20090169219A1 (en) | 2009-07-02 |
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