WO2010079663A1 - 半導体装置、その製造方法、ミリ波誘電体内伝送装置、その製造方法、およびミリ波誘電体内伝送システム - Google Patents
半導体装置、その製造方法、ミリ波誘電体内伝送装置、その製造方法、およびミリ波誘電体内伝送システム Download PDFInfo
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Definitions
- the present invention relates to a semiconductor device, a manufacturing method thereof, an in-millimeter-wave dielectric transmission device, a manufacturing method thereof, and a millimeter-wave dielectric transmission system.
- a semiconductor package for transmitting baseband signals a large number of circuit elements are formed on a semiconductor element, and a semiconductor chip constituting a large-scale electronic circuit is enclosed in a small package having a plurality of terminals. Is often used.
- FIG. 38A is a plan view showing a configuration example of the semiconductor package 1 according to the conventional example, and FIG. 38B is a cross-sectional view taken along arrow X3-X3 in FIG. 38A.
- a semiconductor package 1 shown in FIG. 38A has a semiconductor chip 2 and an interposer substrate 4.
- the semiconductor chip 2 is mounted on the interposer substrate 4.
- the semiconductor chip 2 includes an electric circuit for transmitting a baseband signal.
- a plurality of pad electrodes 3 are formed on the surface of the semiconductor chip 2.
- a plurality of terminal electrodes 5 are provided on the back side of the interposer substrate 4.
- the terminal electrode 5 is a terminal for electrical connection with a mounting substrate to which the semiconductor package 1 is applied, and is used for a power source, a ground (grounding) application, and an electric signal input / output application.
- the interposer substrate 4 connects the pad electrode 3 and the terminal electrode 5 of the semiconductor chip 2.
- the pad electrode 3 and the lead electrode 6 of the semiconductor chip 2 are connected by a bonding wire 7.
- a lead electrode 6 corresponding to the pad electrode 3 is formed on the surface of the interposer substrate 4.
- the lead electrode 6 is connected to the terminal electrode 5 through a wiring pattern in the interposer substrate 4.
- a method of connecting the semiconductor chip 2 and the interposer substrate 4 there is a method of connecting using a lead frame or a bonding wire 7, and there is a method of flip chip bonding using a solder ball.
- protruding electrodes 9 bump: solder balls
- the semiconductor chip 2 is bonded to the interposer substrate 4 via the solder balls. Is the method.
- the semiconductor chip 2 and the bonding wire 7 mounted on the interposer substrate 4 are sealed with a mold resin 8.
- the mold resin 8 is a dielectric material, and its sealing purpose is mainly to protect the semiconductor chip 2 inside the package and the wiring by the bonding wires 7.
- the semiconductor package 1 is usually used by being mounted on the surface of a mounting substrate such as a printed circuit board.
- the semiconductor package 1 is wired to the same printed circuit board or an electric circuit of another printed circuit board.
- multilayer wiring is often used for wiring in a printed circuit board as the number of wirings increases.
- a multilayer substrate is usually constituted by applying a wiring pattern to a thin dielectric substrate, bonding them in layers, and connecting the wirings of each layer by vias. Between the multilayer substrates, a connector is attached to each dielectric substrate, and wiring is performed by direct connection of the connectors or cable connection between the connectors.
- FIG. 39 is a cross-sectional view illustrating a configuration example of an electronic device 700 in which the semiconductor packages 1a and 1b are stacked.
- An electronic apparatus 700 shown in FIG. 39 is configured to include two semiconductor packages 1a and 1b, mounting boards 10a and 10b, a chassis 11, a connector 14, and a cable 15 in a housing 12.
- the semiconductor package 1a is mounted on the lower substrate 10a, and the semiconductor package 1b is mounted on the upper substrate 10b.
- the semiconductor packages 1a and 1b are bonded to the chassis 11 so as to abut the surfaces thereof. This is because the heat generated from the semiconductor packages 1a and 1b is radiated to the chassis 11.
- the two substrates 10a and 10b are fixed to the chassis 11.
- the chassis 11 is further fixed to the housing 12.
- a screw structure 13 is used for fixing the substrates 10a and 10b to the chassis 11 and fixing the chassis 11 to the housing 12.
- As the material of the chassis 11, a metal, a strong plastic material, or the like is used. Further, data transmission between the semiconductor packages 1a and 1b is executed by connecting the connectors 14 to the lower substrate 10a and the upper substrate 10b, respectively, and connecting the cable 15 between the connectors 14.
- Patent Document 1 discloses a dielectric waveguide line.
- This dielectric waveguide line includes a pair of main conductor layers, two rows of via hole groups, and sub-conductor layers, and the main conductor layers are formed in parallel with the dielectric therebetween.
- the via hole group is formed so as to electrically connect the main conductor layers at intervals equal to or shorter than the cutoff wavelength in the signal transmission direction.
- the sub conductor layer is connected to the via hole group and is formed in parallel with the main conductor layer.
- a dielectric waveguide line when an electric signal is transmitted through a waveguide region surrounded by a main conductor layer, a via hole group, and a sub conductor layer, at least one main conductor layer is provided with a high-frequency transmission line and an electromagnetic wave. Slot holes for coupling are formed.
- the high-frequency transmission line is composed of a microstrip line and is formed at a position facing the slot hole.
- the electronic device 700 for transmitting and receiving millimeter waves according to the conventional example has the following problems.
- the cable is bonded to the chassis 11 so that the surfaces of the semiconductor packages 1a and 1b shown in FIG. 39 face each other, and between the connectors 14 provided on the lower substrate 10a and the upper substrate 10b. 15 is connected. Then, data is transmitted between the semiconductor packages 1a and 1b. Therefore, the number of wirings connected to the semiconductor packages 1a and 1b may increase as the data capacity handled by the electronic device increases.
- the data width increases to 32 bits and 64 bits, and the address width also increases. Accordingly, the number of terminal electrodes 5 of the semiconductor packages 1a and 1b increases. This causes a problem that the package size increases. This is particularly due to the fact that the size of the terminal electrode 5 of the interposer substrate 4 is larger than the size of the pad electrode 3 of the semiconductor chip 2.
- the boards 10a and 10b have a multi-layer structure, the number of terminals of the connector 14 and the cable 15 connecting the lower board 10a and the upper board 10b increases. As a result, there arise problems that the physical sizes of the connector 14 and the cable 15 are increased, the shapes of the connector 14 and the cable 15 are complicated, the reliability thereof is lowered, and the cost is increased.
- An object of the present invention is to provide such a semiconductor device, a manufacturing method thereof, an in-millimeter-wave dielectric transmission device, a manufacturing method thereof, and an in-millimeter-wave dielectric transmission system.
- the above-described problems include a semiconductor chip provided on a substrate capable of millimeter-wave band communication, an antenna structure connected to the semiconductor chip, an insulating member covering the semiconductor chip, and a dielectric capable of transmitting a millimeter-wave signal.
- a semiconductor device comprising a millimeter wave transmission member composed of a dielectric material that is included and matched to the antenna structure.
- the insulating member When the antenna structure is a structure that is covered with an insulating member, the insulating member includes a dielectric that can pass a millimeter-wave signal. For example, when a plurality of millimeter-wave band communicable semiconductor chips are configured to be accommodated in the same package, if the entire antenna structure is covered with an insulating member, the insulating member that covers the semiconductor chip is the plurality of semiconductors. It functions as a millimeter wave transmission member that enables millimeter wave signal transmission between chips.
- two semiconductor devices capable of transmitting in the millimeter-wave dielectric having the same configuration according to the present invention are brought into contact with each other through the respective millimeter-wave transmission members to operate the semiconductor device. Then, a millimeter wave signal can be transmitted from one semiconductor device to the other semiconductor device.
- the in-millimeter-wave dielectric transmission device includes a semiconductor chip provided on one substrate and capable of millimeter-wave band communication, an antenna structure connected to the semiconductor chip, and an insulating member that covers the semiconductor chip.
- a second semiconductor device having a member capable of transmitting in a millimeter-wave dielectric, and a dielectric material including a dielectric capable of transmitting millimeter-wave signals, between the first semiconductor device and the second semiconductor device.
- the antenna structure of the first semiconductor device includes a millimeter-wave signal transmission member provided on the antenna, and the first semiconductor device and the second semiconductor device interpose the millimeter-wave signal transmission member. Those that are executable to implement the millimeter wave signal transmission between the antenna structure of the second semiconductor device.
- the second from the first semiconductor device via the millimeter-wave signal transmission member provided between the first semiconductor device and the second semiconductor device.
- Millimeter-wave signals can be transmitted to semiconductor devices.
- a method of manufacturing a semiconductor device includes a step of forming a semiconductor chip capable of millimeter wave band communication on a substrate, a step of connecting an antenna structure to the semiconductor chip formed on the substrate, and an insulating member. A step of covering and insulating the semiconductor chip, and a step of aligning the millimeter wave transmission member with the antenna structure with a dielectric material including a dielectric capable of transmitting a millimeter wave signal.
- a semiconductor chip capable of millimeter-wave band communication is provided on one substrate, an antenna structure is connected to the semiconductor chip, and the semiconductor chip is connected by an insulating member.
- Millimeter wave signal between the Na structure by interposing the millimeter wave transmission member so as to be transmitted is to implement the first and second semiconductor devices.
- the in-millimeter-wave dielectric transmission system includes a semiconductor chip provided on a substrate of one electronic device and capable of millimeter-wave band communication, an antenna structure connected to the semiconductor chip, and a semiconductor chip of the electronic device.
- Semiconductor device capable of transmitting in a millimeter-wave dielectric having an insulating member covering the semiconductor device, a semiconductor chip capable of millimeter-wave band communication provided on the substrate of the other electronic device, and an antenna structure connected to the semiconductor chip
- a second semiconductor device having an insulating member covering a semiconductor chip of the electronic device and capable of transmitting in a millimeter-wave dielectric, and a dielectric material including a dielectric capable of transmitting a millimeter-wave signal.
- the antenna structures of the first and second semiconductor devices each having a semiconductor chip capable of millimeter wave band communication are arranged so as to face each other with a dielectric transmission line interposed therebetween. . Then, a millimeter wave signal is transmitted from the first semiconductor device to the second semiconductor device through a dielectric transmission path capable of transmitting a millimeter wave signal provided between the first semiconductor device and the second semiconductor device. Can be transmitted.
- a millimeter-wave dielectric transmission system can be easily constructed without depending on a connector having a large number of terminals and a printed wiring sheet cable having a large mounting area.
- One embodiment of the present invention having such a mechanism can be applied to a millimeter-wave band communication system that transmits a millimeter-wave band signal having a carrier frequency of 30 GHz to 300 GHz at a high speed, for example, for transporting movie images or computer images. is there.
- the antenna structure is connected to the semiconductor chip. Further, a millimeter wave transmission member made of a dielectric material including a dielectric capable of transmitting a millimeter wave signal and matched to the antenna structure is provided.
- the insulating member that covers the semiconductor chip also includes a dielectric that can pass a millimeter-wave signal so as to form a transmission line in the millimeter-wave dielectric.
- the device can be easily constructed.
- each antenna structure of the first and second semiconductor devices each having a semiconductor chip capable of millimeter-wave band communication includes a millimeter-wave transmission member. Are arranged.
- a millimeter wave is transmitted from the first semiconductor device to the second semiconductor device via a millimeter wave transmission member capable of millimeter wave signal transmission provided between the first semiconductor device and the second semiconductor device. Can be transmitted.
- a millimeter-wave dielectric transmission system that can transmit millimeter-wave signals in one or both directions without depending on a connector having a large number of terminals and a printed wiring sheet cable having a large mounting area. become.
- the first semiconductor device capable of transmitting in the millimeter-wave dielectric is provided on the substrate of one electronic device, and the millimeter semiconductor is transmitted on the substrate of the other electronic device.
- a second semiconductor device capable of waveband communication is provided.
- a millimeter wave transmission member capable of transmitting a millimeter wave signal is provided between the first semiconductor device and the second semiconductor device, and one electronic device and the other electronic device are connected to each other via the millimeter wave transmission member.
- the antenna structure of the semiconductor device is in contact with the antenna structure of the second semiconductor device so that a millimeter wave signal can be transmitted.
- a millimeter wave is transmitted from the first semiconductor device to the second semiconductor device via a millimeter wave transmission member capable of millimeter wave signal transmission provided between the first semiconductor device and the second semiconductor device. Can be transmitted.
- communication processing can be executed between one electronic device and the other electronic device without depending on a communication cable or the like connecting both electronic devices.
- FIG. 6 is a process diagram illustrating an example of forming a semiconductor package 20.
- FIG. 6 is a process diagram illustrating an example of forming a semiconductor package 20.
- FIG. 6 is a process diagram illustrating an example of forming a semiconductor package 20.
- FIG. 6 is a process diagram illustrating an example of forming a semiconductor package 20.
- FIG. 6 is a process diagram illustrating an example of forming a semiconductor package 20.
- FIG. 3 is a block diagram illustrating an example of an internal configuration of an in-millimeter-wave dielectric transmission device 200.
- FIG. FIG. 5 is a perspective view illustrating an enlarged configuration example of the in-millimeter-wave dielectric transmission device 200 illustrated in FIG.
- It is explanatory drawing which shows the example of a simulation model for the passage characteristic and reflection characteristic verification of the in-millimeter-wave dielectric transmission apparatus 200.
- FIG. 10 is a process diagram illustrating an example of forming the electronic device 601.
- FIG. 10 is a process diagram illustrating an example of forming the electronic device 601.
- FIG. 11 is a process diagram illustrating an example of forming the electronic device 602.
- FIG. 11 is a process diagram illustrating an example of forming the electronic device 602. It is a figure explaining the comparative example with respect to 7th Embodiment.
- FIG. 26 is a first diagram illustrating an example of simulation characteristics in the semiconductor package of the seventh embodiment illustrated in FIG. 25;
- FIG. 26 is a second diagram illustrating an example of simulation characteristics in the semiconductor package of the seventh embodiment illustrated in FIG. 25;
- FIG. 26 is a third diagram illustrating an example of simulation characteristics of the semiconductor package of the seventh embodiment illustrated in FIG. 25;
- FIG. 31 is a diagram (part 1) illustrating an example of simulation characteristics in the in-millimeter-wave dielectric transmission system according to the eighth embodiment illustrated in FIG. 30;
- FIG. 32 is a second diagram illustrating an example of simulation characteristics in the in-millimeter wave dielectric transmission system according to the eighth embodiment illustrated in FIG. 30;
- FIG. 33 is a third diagram illustrating an example of simulation characteristics in the in-millimeter-wave dielectric transmission system according to the eighth embodiment illustrated in FIG. 30; It is a figure explaining the semiconductor package of the 1st modification. It is a figure explaining the semiconductor package of the 2nd modification.
- First Embodiment (Semiconductor Package 20: Configuration Example, Internal Configuration Example, and Process Diagram) 2. Second Embodiment (In-millimeter-wave dielectric transmission device 200: configuration example, assembly example, internal configuration (Example, enlarged configuration example, simulation model example, characteristic example) 3. Third embodiment (in-millimeter-wave dielectric transmission device 300: configuration example) 4). Fourth Embodiment (Semiconductor Package 20c: Configuration Example, Formation Example Millimeter-Wave Dielectric Transmission Device 400: Configuration Example and Assembly Example) 5). Fifth embodiment (in-millimeter-wave dielectric transmission device 500: configuration example and formation example) 6).
- a configuration example of a semiconductor package 20 as a first embodiment according to the present invention will be described with reference to FIG.
- a semiconductor package 20 shown in FIG. 1 constitutes an example of a semiconductor device.
- the semiconductor package 20 can be applied to an in-millimeter-wave dielectric transmission system that transmits a millimeter-wave band signal having a carrier frequency of 30 GHz to 300 GHz for carrying movie images or computer images at high speed.
- the in-millimeter-wave dielectric transmission system includes a digital recording / reproducing device, a terrestrial television receiver, a mobile phone, a game machine, a computer, a communication device, and the like.
- the semiconductor package 20 includes an interposer substrate 4, a mold resin 8, a dielectric transmission path 21 capable of transmitting a millimeter wave signal, a semiconductor chip 30 capable of millimeter wave band communication, and an antenna structure 32.
- the interposer substrate 4 constitutes a substrate for chip mounting, and a semiconductor chip 30 is provided on the interposer substrate 4.
- a sheet member in which a heat reinforced resin having a predetermined dielectric constant and a copper foil are combined is used.
- the semiconductor chip 30 performs communication processing in the millimeter wave band.
- a system LSI in which an LSI function unit 201 and a signal generation unit 202 as shown in FIG. 2 are integrated is used (see FIG. 2).
- terminals of the power supply unit and the like that are not subject to conversion of the millimeter wave signal are wired from the pad electrode 3 of the semiconductor chip 30 to the lead electrode 6 via the bonding wire 7 in the same manner as in the conventional configuration, Connected to the terminal electrode 5.
- the antenna structure 32 is connected to the semiconductor chip 30.
- the antenna structure 32 is provided on the semiconductor chip 30 of the interposer substrate 4.
- the antenna structure 32 includes an antenna terminal 31, a microstrip line 33, an antenna 39, and the like (see FIG. 2).
- the package components such as the semiconductor chip 30 and the antenna structure 32 on the interposer substrate 4 are covered and insulated (sealed) with a mold resin 8 as an example of an insulating member.
- a mold resin 8 for example, an epoxy resin having a relative dielectric constant ⁇ 1 is used.
- a printed wiring sheet cable for data transmission is connected from the pad electrode 3 of the semiconductor chip 2 to the terminal electrode 5 as shown in FIG.
- the antenna terminal 31 is wired to the semiconductor integrated circuit that implements the signal generation unit 202 inside the semiconductor chip 30.
- a part of the terminal electrode 5 of the conventional semiconductor package 1 is replaced with the antenna structure 32 in the semiconductor package 20 of the present invention. As a result, the terminal electrode 5 can be reduced.
- the mold resin 8 is formed of a dielectric material including a dielectric capable of transmitting a millimeter wave signal, and constitutes a part or all of the dielectric transmission path 21. To do.
- the purpose of the mold resin 8 is to protect the wiring by the semiconductor chip and the bonding wire inside the package.
- the dielectric transmission path 21 may be further formed. Different.
- the dielectric transmission path 21 capable of transmitting a millimeter wave signal as shown by a two-dot chain line is provided.
- the dielectric transmission path 21 constitutes an example of a millimeter wave transmission member, and is composed of a part of a metal chassis 11 and a dielectric material having a predetermined relative dielectric constant ⁇ 3 as shown in FIGS. 3A to 3E.
- the dielectric material includes a dielectric capable of transmitting millimeter wave signals.
- a member made of acrylic resin, urethane resin, epoxy resin, silicone, and polyimide is used for the dielectric material.
- the chassis 11 constitutes an example of a region demarcating member and has a through portion 11 a that is aligned with the upper portion of the antenna structure 32.
- the opening cross-sectional shape of the penetration part 11a may be circular or rectangular.
- the depth (height) of the through-hole 11a formed in the thickness direction of the chassis 11 defines (defines) the length of the dielectric transmission path 21 (waveguide).
- the dielectric transmission path 21 is not limited to the thickness direction of the chassis 11, and may be disposed in the surface direction of the chassis 11.
- the dielectric material is provided in the through-hole 11a of the chassis 11 and functions to form an in-dielectric transmission path for electromagnetic waves based on millimeter wave signals.
- the dielectric transmission path 21 is not limited to the dielectric material provided in the through-hole 11 a in the chassis 11, and a part of the mold resin 8 that covers the semiconductor chip 30 is used as the dielectric transmission path 21. May be.
- the semiconductor chip 30 shown in FIG. 2 includes an LSI function unit 201, a signal generation unit 202, and a bidirectional antenna coupling unit 203.
- the antenna coupling unit 203 constitutes an example of a signal coupling unit or a part thereof, and the antenna coupling unit 203 is, in a narrow sense, an electronic circuit in the semiconductor chip 30 and an antenna disposed inside or outside the chip.
- the LSI function unit 201 has a predetermined function provided by the conventional semiconductor chip 2 shown in FIG.
- the LSI function unit 201 includes a circuit that processes image and audio data desired to be transmitted to the other party, and a circuit that processes image and audio data received from the other party.
- a signal generation unit 202 is connected to the LSI function unit 201.
- the signal generation unit 202 includes a downlink signal generation unit 23 that configures an example of a first signal generation unit and an uplink signal generation unit 24 that configures an example of a second signal generation unit.
- the downstream signal generation unit 23 includes a parallel / serial conversion circuit 34, a modulation circuit 35, a frequency conversion circuit 36, and an amplifier 37 in order to process the input signal Sin to generate a millimeter wave signal S. .
- the parallel-serial conversion circuit 34 constitutes an example of a first signal conversion unit, and converts a parallel input signal Sin (data) into a serial transmission signal Ss (data).
- a modulation circuit 35 is connected to the parallel-serial conversion circuit 34.
- the modulation circuit 35 is configured to modulate the serial transmission signal Ss.
- As the modulation circuit 35 for example, a phase modulation circuit or a frequency modulation circuit is used.
- a frequency conversion circuit 36 is connected to the modulation circuit 35.
- the frequency conversion circuit 36 frequency-converts the transmission signal Ss modulated by the modulation circuit 35 to generate a millimeter wave signal S.
- the millimeter wave signal S refers to a signal having a certain frequency in the range of 30 GHz to 300 GHz.
- An amplifier 37 is connected to the frequency conversion circuit 36. The amplifier 37 amplifies the millimeter wave signal S after frequency conversion.
- the amplifier 37 is connected to a bidirectional antenna coupling unit 203 via an antenna terminal 31 (not shown).
- the antenna coupling unit 203 transmits the millimeter wave signal S generated by the downstream signal generation unit 23 to the dielectric transmission path 21 and receives the millimeter wave signal S from the dielectric transmission path 21 to generate an upstream signal.
- the dielectric transmission line 21 is made of a dielectric material having a predetermined relative dielectric constant ⁇ 3.
- the antenna coupling unit 203 includes, for example, an antenna structure 32 and an antenna switching unit 38 (antenna duplexer).
- the antenna structure 32 is a structure in the antenna coupling portion 203 on the semiconductor package 20 side that shares the dielectric transmission path 21.
- the antenna structure 32 includes an antenna terminal 31, a microstrip line 33, and an antenna 39.
- the antenna switching unit 38 is formed in the same chip, the antenna terminal 31 and the microstrip line 33 excluding the antenna switching unit 38 constitute the antenna coupling unit 203.
- the antenna 39 has a predetermined length based on the wavelength ⁇ of the millimeter wave signal S, for example, about 600 ⁇ m, and is coupled to the dielectric transmission path 21.
- a probe antenna such as a dipole
- the antenna 39 radiates an electromagnetic wave S ′ based on the downstream millimeter wave signal S to the dielectric transmission path 21.
- the antenna 39 receives an electromagnetic wave S ′ based on the upstream millimeter-wave signal S from the dielectric transmission path 21.
- the antenna structure 32 includes a microstrip line 33 in addition to the antenna 39.
- the microstrip line 33 connects the antenna terminal 31 and the antenna 39, transmits a downstream millimeter wave signal S from the antenna terminal 31 to the antenna 39, and transmits an upstream millimeter wave signal S from the antenna 39. Transmit to the antenna terminal 31.
- the antenna switching unit 38 is used when the antenna 39 is shared in the downlink and uplink. For example, when transmitting the millimeter wave signal S to the other party, the antenna switching unit 38 connects the antenna 39 to the downlink signal generating unit 23. When receiving the millimeter wave signal S from the other party, the antenna switching unit 38 connects the antenna 39 to the upstream signal generation unit 24.
- the antenna switching unit 38 is provided on the semiconductor chip 30, but is not limited thereto, and may be provided in the semiconductor chip 30. Note that the antenna switching unit 38 may be omitted when the downlink and uplink antennas are provided separately.
- a dielectric material having a relative dielectric constant ⁇ 1 is used, and the dielectric material having a relative dielectric constant ⁇ 1 constitutes a lossy dielectric transmission line 21.
- a millimeter wave electromagnetic wave S ′ propagates in the transmission line 21. Since the dielectric transmission line 21 has a large loss, reflection is also attenuated.
- the upstream signal generation unit 24 is connected to the antenna coupling unit 203.
- the upstream signal generation unit 24 processes the millimeter wave signal S received by the antenna coupling unit 203 to generate an output signal Sout, so that an amplifier 44, a frequency conversion circuit 45, a demodulation circuit 46, and a serial / parallel conversion circuit 47 are generated. It is comprised.
- the amplifier 44 is connected to the antenna coupling unit 203 so as to amplify the millimeter wave signal S received by the antenna 39.
- a frequency conversion circuit 45 is connected to the amplifier 44.
- the frequency conversion circuit 45 converts the frequency of the amplified millimeter wave signal S and outputs a serial reception signal Sr after frequency conversion.
- a demodulation circuit 46 is connected to the frequency conversion circuit 45, and the demodulation circuit 46 demodulates the serial reception signal Sr after the frequency conversion.
- a serial / parallel conversion circuit 47 constituting an example of a second signal conversion unit is connected to the demodulation circuit 46.
- the serial / parallel conversion circuit 47 converts the serial reception signal Sr (data) into a parallel output signal Sout (data).
- the semiconductor chip 30 is configured in this way, the number of signal wirings is reduced by serial-parallel conversion of the input signal Sin (error of parallel-serial conversion) and serial-parallel conversion processing of the reception signal Sr.
- the number of multilayer substrates can be reduced. As a result, it is possible to reduce connectors and printed wiring sheet cables having a large number of terminals.
- the semiconductor package 20 is configured and the semiconductor package 20 is operated. Then, the dielectric material provided in the penetration part 11a of one chassis 11 and the dielectric material provided in the penetration part 11a of the other chassis 11 come to form a millimeter-wave dielectric transmission path. Through this dielectric transmission path, a millimeter wave signal S can be transmitted from one semiconductor package 20 capable of transmitting in a millimeter-wave dielectric to the other semiconductor package 20 capable of transmitting in a millimeter-wave dielectric.
- the semiconductor chip 30 capable of millimeter wave band communication is formed on the interposer substrate 4 (die) shown in FIG. 3A.
- the semiconductor chip 30 a system LSI in which the transmission and reception systems shown in FIG. 2 are integrated into a semiconductor integrated circuit is used.
- the transmission system includes an LSI function unit 201, a parallel-serial conversion circuit 34, a modulation circuit 35, a frequency conversion circuit 36, an amplifier 37, and an antenna switching unit 38.
- the reception system includes an amplifier 44, a frequency conversion circuit 45, a demodulation circuit 46, and a serial.
- a parallel conversion circuit 47 is provided.
- the semiconductor chip 30 may be mounted on the interposer substrate 4 by a conventionally obvious manufacturing method.
- an antenna terminal 31 is formed on the semiconductor chip 30.
- the antenna terminal 31 is drawn out from the output point of the antenna switch 38 mounted in the antenna coupling unit 203 in the region where the antenna structure 32 is provided.
- the antenna switch 39 is included in the semiconductor chip 30, the antenna terminal 31 is drawn out from the output point of the antenna switch 38 mounted inside the semiconductor chip 30.
- the antenna structure 32 is connected to the semiconductor chip 30 mounted on the interposer substrate 4 shown in FIG. 3B.
- a microstrip line 33 is formed from the antenna terminal 31 on the semiconductor chip 30, and an antenna 39 is formed at the tip of the microstrip line 33.
- a patch antenna having a predetermined length based on the wavelength ⁇ of the millimeter wave signal S, for example, about 600 ⁇ m per side is used.
- a probe antenna such as a dipole
- a loop antenna or a small aperture coupling element (such as a slot antenna) may be used in addition to the patch antenna.
- An antenna structure 32 is obtained by the antenna terminal 31, the microstrip line 33, and the antenna 39 on the semiconductor chip 30.
- the semiconductor chip 30 and the antenna structure 32 on the interposer substrate 4 are covered with the mold resin 8 and insulated.
- An epoxy resin having a relative dielectric constant ⁇ 1 is used for the mold resin 8.
- the epoxy resin a cresol novolac type epoxy resin (ECN) and a fused silica filler synthesized or a biphenyl type epoxy resin is used.
- a protruding electrode 9 (bump) for flip chip bonding is formed under the interposer substrate 4.
- the protruding electrode 9 is composed of a spherical solder member.
- a dielectric transmission path 21 capable of transmitting a millimeter wave signal is formed on the mold resin 8.
- the metal chassis 11 having the through-holes 11 a is formed on the mold resin 8.
- the through portion 11 a is a portion aligned with the upper portion of the antenna structure 32 of the semiconductor chip 30.
- a through-hole 11 a having a diameter ⁇ is opened at a predetermined position in the chassis 11.
- a dielectric material is filled in the through-hole 11a of the chassis 11 to form a dielectric transmission path 21 for millimeter wave signals.
- a glass epoxy resin member having a relative dielectric constant ⁇ 1 is used as the dielectric material.
- a viscoelastic material 16 made of a dielectric material capable of being transmitted in the millimeter wave dielectric is inserted between the semiconductor package 20 and the dielectric transmission path 21. May be.
- the viscoelastic material 16 provides a heat dissipation effect between the semiconductor package 20 and the chassis 11, and improves the adhesion between the dielectric transmission path 21 and the antenna coupling performance.
- the viscoelastic material 16 has a predetermined relative dielectric constant and a predetermined dielectric loss tangent.
- a dielectric material made of acrylic resin, urethane resin, epoxy resin, silicone, and polyimide is used for the viscoelastic material 16.
- the relative dielectric constant of the viscoelastic material 16 is set to about 3 to 6, and the dielectric loss tangent is set to about 0.0001 to 0.001. Is desirable.
- the relative permittivity of acrylic resin is 2.5 to 4.5, and the dielectric loss tangent is 0.001 to 0.05.
- the relative dielectric constant of the urethane resin system is 2.8 to 4, and the dielectric loss tangent is 0.001 to 0.05.
- the relative permittivity of the epoxy resin system is 4 to 6, and the dielectric loss tangent is 0.001 to 0.01.
- the relative permittivity of silicone is 3 to 6, and the dielectric loss tangent is 0.0001 to 0.001.
- the relative permittivity of polyimide is 3 to 4, and the dielectric loss tangent is 0.001 to 0.01.
- the semiconductor chip 30 and the antenna structure 32 on the interposer substrate 4 are covered and insulated by the mold resin 8, and a dielectric is formed on the mold resin 8.
- a body transmission path 21 is provided. Therefore, the dielectric transmission paths 21 of the two semiconductor packages 20a and 20b having the same configuration according to the present invention and capable of transmitting in the millimeter wave dielectric are brought into contact with each other to operate the semiconductor packages 20a and 20b. . Then, the millimeter wave signal S can be transmitted from one semiconductor package 20a to the other semiconductor package 20b. In addition, high-speed data transmission can be realized between the semiconductor packages 20a and 20b.
- the mold resin 8 covering the semiconductor chip 30 and the antenna structure 32 also constitutes the in-millimeter-wave dielectric transmission path, the mounting area of the semiconductor package 20 can be reduced.
- a millimeter-wave dielectric transmission system (apparatus) that can transmit a millimeter-wave signal S in one or both directions with a simple and inexpensive configuration without depending on a connector having a large number of terminals and a printed wiring sheet cable. ) Can be built easily.
- the terminal electrode formed on the substrate side is replaced with the antenna structure 32 applied to the antenna coupling portion 203.
- the antenna structure 32 can be formed to be extremely small, so that the package size can be reduced. Further, the number of wirings is reduced in the mounting substrate. As a result, it is possible to reduce the number of layers when forming the multilayer substrate.
- ⁇ Second Embodiment> [Configuration example of in-millimeter-wave dielectric transmission device 200]
- a chassis 11 with a dielectric transmission path is sandwiched and stacked between two semiconductor packages 20a and 20b capable of transmitting in the millimeter wave dielectric.
- the in-millimeter-wave dielectric transmission device 200 shown in FIG. 4 includes mounting substrates 10a and 10b, a chassis 11, a housing 12, and semiconductor packages 20a and 20b.
- the two semiconductor packages 20 a and 20 b are arranged so that the surfaces thereof are in contact with the chassis 11.
- the housing 12 is a set box (case) for a digital recording / reproducing device, a terrestrial television receiver, a mobile phone, a game machine, a computer, a communication device, or the like.
- a chassis 11 with a dielectric transmission path 21 is attached to the housing 12.
- the chassis 11 is fixed to a side surface inside the housing 12, a bottom surface thereof, an upper surface thereof, and the like by a screw structure 13.
- Mounting boards 10 a and 10 b are attached to the chassis 11.
- a predetermined part of the chassis 11 is provided with two upper and lower board mounting spaces, and one board 10a and 10b is attached to each space by the screw structure 13 with the chassis 11 therebetween.
- a semiconductor package 20a is attached to the lower substrate 10a.
- the semiconductor package 20a described in the first embodiment is used as the semiconductor package 20a.
- the lower substrate 10a and the semiconductor package 20a are soldered to each other with bump electrodes 9 by a conventional flip chip bonding method.
- a semiconductor chip 30 capable of millimeter wave band communication is provided on one interposer substrate 4.
- An antenna structure 32 is connected to the semiconductor chip 30.
- the semiconductor chip 30 and the antenna structure 32 on the interposer substrate 4 are covered with the mold resin 8.
- the semiconductor package 20b is mounted downward on the upper substrate 10b.
- the semiconductor package 20b is mounted with its 180 ° posture inverted compared to the semiconductor package 20a.
- the semiconductor package 20b the semiconductor package 20 described in the first embodiment is used.
- the upper substrate 10b and the semiconductor package 20b are soldered and joined by protruding electrodes 9 such as bumps.
- the semiconductor package 20 b is provided with a semiconductor chip 30 capable of millimeter wave band communication under the other interposer substrate 4.
- the antenna structure 32 is connected to the semiconductor chip 30 in the same manner as the semiconductor package 20a.
- the semiconductor chip 30 and the antenna structure 32 under the interposer substrate 4 are covered with the mold resin 8.
- the in-millimeter-wave dielectric transmission device 200 has a laminated structure that is mounted on the chassis 11 so that the antenna structures 32 of the two semiconductor packages 20a and 20b face each other.
- the antenna structure 32 of the semiconductor package 20 a is provided on the semiconductor chip 30 of the interposer substrate 4.
- the antenna structure 32 of the semiconductor package 20 b is provided under the semiconductor chip 30 under the interposer substrate 4.
- a patch antenna is used for each antenna structure 32.
- each antenna structure 32 is formed on the surface of the semiconductor packages 20 a and 20 b and is disposed so as to be in direct contact with the dielectric transmission path 21.
- the semiconductor package 20 a mounted on the lower substrate 10 a is fixed so as to be in close contact with the chassis 11 via the viscoelastic material 16.
- a viscoelastic resin having a relative dielectric constant ⁇ 4 is used as the viscoelastic material 16.
- the semiconductor package 20 b mounted under the upper substrate 10 b is also fixed so as to be in close contact with the chassis 11 via the viscoelastic material 16. The reason why the semiconductor packages 20a and 20b are fixed by the viscoelastic material 16 is to prevent substances having different relative dielectric constants ⁇ 1 from interposing in the dielectric transmission path 21 as much as possible.
- a dielectric transmission path 21 capable of transmitting a millimeter wave signal is provided between the semiconductor package 20a and the semiconductor package 20b, and the antenna structures 32 of the semiconductor packages 20a and 20b are opposed to each other with the dielectric transmission path 21 interposed therebetween. Has been implemented. An inner portion indicated by a broken line in the chassis 11 is a dielectric transmission path 21.
- the dielectric transmission path 21 is disposed at a position where the upper part of the antenna structure 32 of the semiconductor package 20a and the lower part of the antenna structure 32 of the semiconductor package 20b are aligned.
- a penetrating portion 11a (see FIG. 5) is provided in a portion of the chassis 11 where the upper and lower antenna structures 32 are aligned.
- the dielectric transmission path 21 is provided by filling the through-hole 11a with a dielectric material 21 '.
- a glass epoxy resin having a relative dielectric constant ⁇ 1 is used for the dielectric material 21 '.
- the millimeter-wave dielectric transmission device 200 is configured to operate the two semiconductor packages 20a and 20b.
- the millimeter wave signal S becomes an electromagnetic wave S ′ between the antenna structures 32 of the semiconductor packages 20 a and 20 b and is transmitted through the mold resin 8, the viscoelastic material 16, and the dielectric transmission path 21 inside the chassis 11.
- the millimeter wave between one semiconductor package 20a and the other semiconductor package 20b is passed through the dielectric material 21 'provided in the through-hole 11a of the chassis 11 constituting the dielectric transmission path 21.
- Bidirectional communication processing based on the signal S can be executed.
- the connector 14 and the cable 15 used in the configuration of the conventional circuit mounting board shown in FIG. 39 are not required.
- the semiconductor packages 20a and 20b are formed.
- a semiconductor chip 30 capable of millimeter wave band communication is provided on one interposer substrate 4.
- the antenna structure 32 is connected to the semiconductor chip 30.
- the mold resin 8 is covered and insulated from the semiconductor chip 30 and the antenna structure 32 on the interposer substrate 4.
- the semiconductor package 20a which can be transmitted in the millimeter wave dielectric can be formed (see FIG. 3).
- a semiconductor chip 30 capable of millimeter wave band communication is provided on the other (separate) interposer substrate 4.
- the antenna structure 32 is connected to the semiconductor chip 30.
- the mold resin 8 is covered and insulated from the semiconductor chip 30 and the antenna structure 32 on the interposer substrate 4. Thereby, the semiconductor package 20b that can be transmitted in the millimeter wave dielectric can be formed (see FIG. 3).
- a dielectric transmission path 21 capable of transmitting a millimeter wave signal is formed between the semiconductor package 20a and the semiconductor package 20b.
- a cylindrical penetrating portion 11 a is formed at a predetermined position of the metal chassis 11.
- the dielectric material 21 ′ is filled in the through portion 11 a.
- a member for a resin stopper is applied to one side of the penetrating portion 11a, and the dielectric material 21 'is applied with a squeegee or the like from above the penetrating portion 11a in the bottomed state.
- a dielectric waveguide is constituted.
- the two semiconductor packages 20a and 20b are mounted on the chassis 11 so that the antenna structure 32 of the semiconductor package 20a and the antenna structure 32 of the semiconductor package 20b are opposed to each other with the dielectric transmission path 21 interposed therebetween.
- alignment is performed so that the center of the antenna 39 of the antenna structure 32 of the semiconductor package 20a and the center of the antenna 39 of the antenna structure 32 of the semiconductor package 20b coincide.
- the in-millimeter-wave dielectric transmission device 200 shown in FIG. 4 is completed.
- the in-millimeter-wave dielectric transmission device 200 shown in FIG. 6 includes a semiconductor package 20a, a dielectric transmission path 21, and a semiconductor package 20b.
- the semiconductor package 20a includes an LSI function unit 201, a signal generation unit 202, and an antenna coupling unit 203.
- the functions of the LSI function unit 201 and the internal configurations of the signal generation unit 202 and the antenna coupling unit 203 are as shown in FIG.
- the electrical interface 204 between the LSI function unit 201 and the signal generation unit 202 is a data transmission interface provided by the pad electrode 3 in the conventional semiconductor chip 2 and is realized by electrical wiring.
- the millimeter wave interface 205 between the signal generation unit 202 and the antenna coupling unit 203 is an interface for millimeter wave transmission provided by the antenna terminal 31 and the microstrip line 33 shown in FIG.
- the signal generation unit 202 converts an input (electrical) signal Sin given by the interface 204 into a millimeter wave signal S. Further, the millimeter wave signal S given by the millimeter wave interface 205 is converted into an output (electrical) signal Sout.
- the semiconductor package 20b includes an LSI function unit 201 ', a signal generation unit 202', and an antenna coupling unit 203 '.
- the functions of the LSI function unit 201 ′ and the internal configurations of the signal generation unit 202 ′ and the antenna coupling unit 203 ′ are the same as those of the LSI function unit 201, the signal generation unit 202, and the antenna coupling unit 203 shown in FIG. Omitted.
- the millimeter wave interface 205 ′ between the signal generation unit 202 ′ and the antenna coupling unit 203 ′ is a millimeter wave transmission interface provided by the antenna terminal 31 and the microstrip line 33 illustrated in FIG. 2.
- the signal generator 202 ' converts the input (electrical) signal Sin provided by the interface 204' into a millimeter wave signal S. Further, the millimeter wave signal S given by the millimeter wave interface 205 ′ is converted into an output (electrical) signal Sout.
- the dielectric transmission path 21 is constituted by the dielectric section 206 between the antenna coupling section 203 and the antenna coupling section 203 'described above.
- the antenna coupling unit 203 transmits the millimeter wave signal S provided by the interface 205 of the millimeter wave signal S to the dielectric transmission path 21. Thereby, it can transmit efficiently to the other antenna coupling part 203 'via the dielectric section 206.
- “efficient” means that the passing characteristics between the antenna coupling sections 203-203 ′ are high and the reflection characteristics in each of the antenna coupling sections 203, 203 ′ are low at a predetermined millimeter waveband frequency of 30 GHz to 300 GHz.
- FIG. 7 an enlarged configuration example of the in-millimeter-wave dielectric transmission device 200 shown in FIG. 4 will be described.
- a patch antenna is used as the antenna 39 in each of the antenna structures 32 of the semiconductor packages 20 a and 20 b.
- the antenna 39 is mounted on the semiconductor chip 30, and is connected to the antenna terminal 31 formed on the surface of the semiconductor chip directly or via a bonding wire. Since the antenna 39 is formed on the surface of the semiconductor chip 30, a structure in direct contact with the dielectric transmission path 21 can be adopted.
- the semiconductor package 20b is configured similarly to the semiconductor package 20a.
- the cylindrical portion indicated by a broken line is the dielectric transmission path 21.
- the antenna structures 32 of the two semiconductor packages 20a and 20b are mounted on the chassis 11 so as to face each other with the dielectric transmission path 21 interposed therebetween.
- the dielectric transmission path 21 is arranged (constructed) so that, for example, the respective antenna structures 32 are within a range that can be seen through each other.
- the millimeter wave signal S is transmitted to the antenna structure 32 via the antenna terminal 31.
- the antenna structure 32 radiates the millimeter wave signal S to the dielectric transmission path 21 via the antenna 39.
- the antenna structure 32 receives the electromagnetic wave S ′ from the dielectric transmission path 21 and transmits the millimeter wave signal S to the antenna terminal 31. Thereby, it becomes possible to execute a communication process in which the dielectric transmission line 21 is interposed between the semiconductor packages 20a and 20b.
- Example of simulation model With reference to FIG. 8, an example of a simulation model for verifying pass characteristics and reflection characteristics of the in-millimeter-wave dielectric transmission device 200 will be described.
- the simulation model shown in FIG. 8 employs a configuration example of the in-millimeter-wave dielectric transmission device 200 shown in FIG. Table 1 summarizes the parameters set in the simulation model.
- w1 is the width of the microstrip line 33.
- t2 is the thickness of the dielectric of the microstrip line 33.
- t2 0.1 mm is set.
- t3 is the thickness of the microstrip line 33.
- t3 0.018 mm is set.
- the same parameters are given to the upper and lower semiconductor packages 20a and 20b shown in FIG.
- Example of simulation characteristics An example of simulation characteristics of the in-millimeter-wave dielectric transmission device 200 will be described with reference to FIG. According to the simulation characteristic example shown in FIG. 9, the example of the pass characteristic and the reflection characteristic between the antenna terminals 31 given to the simulation model of the in-millimeter-wave dielectric transmission device 200 shown in FIG.
- the vertical axis represents the transmission characteristic S (2,1) dB and the reflection characteristic S (1,1) dB.
- the horizontal axis is the carrier frequency f (GHz), and the scale is in units of 5 GHz.
- Ia indicated by a broken line indicates an example of the pass characteristic.
- the dielectric transmission line 21 is constituted by the viscoelastic materials 16a and 16b and the dielectric material 21 ′, and the antenna coupling portions 203 and 203 ′ of the upper and lower semiconductor packages 20a and 20b are connected to the microstrip line 33, respectively. And an antenna 39.
- the carrier frequency f is increased from 40 GHz to 80 GHz and increased by 1 GHz.
- the electromagnetic wave S ′ based on the millimeter wave signal S is radiated from the antenna terminal 31 of the semiconductor package 20a.
- the passage characteristic which reaches the antenna terminal 31 of the semiconductor package 20b was verified by the simulation model.
- An example of the pass characteristic Ia between the antenna terminals 31 in this case is shown in the frequency characteristic diagram.
- the passage loss is the smallest at about 2.1 dB when the carrier frequency f is around 59 GHz.
- This reflection characteristic S (1,1) dB is a case where the carrier frequency is increased from 40 GHz to 80 GHz and increased by 1 GHz.
- the electromagnetic wave S ′ based on the millimeter wave signal S is radiated from the antenna terminal 31 of the semiconductor package 20a.
- attains and reflects in the antenna terminal 31 of the semiconductor package 20b was verified with the simulation model.
- a reflection characteristic example IIa between the antenna terminals 31 in this case is shown in the frequency characteristic diagram.
- the reflection loss is the smallest at about ⁇ 22 dB when the carrier frequency f is around 59 GHz.
- each antenna structure 32 of the semiconductor packages 20a and 20b having the semiconductor chip 30 capable of millimeter-wave band communication is connected to the dielectric transmission path 21. It is arrange
- the millimeter wave signal S can be transmitted from the semiconductor package 20a to the semiconductor package 20b via the dielectric transmission path 21 provided between the semiconductor package 20a and the semiconductor package 20b. Since the mold resin 8 covering the semiconductor chip 30 and the antenna structure 32 of each of the semiconductor packages 20a and 20b also constitutes the in-millimeter-wave dielectric transmission path, the mounting area of the semiconductor package 20a can be reduced. In addition, while maintaining the transmission capability from the semiconductor package 20a to the semiconductor package 20b, the number of wirings to the semiconductor package 20a on the lower substrate 10a and wirings to the semiconductor package 20b below the upper substrate 10b is reduced. Will be able to provide.
- the viscoelastic material 16 disposed between the semiconductor packages 20a and 20b and the chassis 11 enhances the adhesion between the semiconductor packages 20a and 20b and the dielectric transmission path 21. Since the dielectric transmission path 21 formed inside the chassis 11 is arranged so that the surfaces of the semiconductor packages 20a and 20b are in close contact with each other, the structure of the chassis 11 for fixing the substrate 10 on which the semiconductor packages 20a and 20b are mounted is provided. It will be possible to use both.
- the millimeter wave signal S can be transmitted between the semiconductor packages 20a and 20b that are in close contact with the front and back of the chassis 11.
- the chassis 11 also serves as a part of the dielectric transmission path 21, the configuration of the electronic device can be simplified.
- the millimeter wave dielectric transmission device 200 that can transmit the millimeter wave signal S in one direction or in both directions can be easily constructed without depending on the connector having a large number of terminals and the printed wiring sheet cable. It was.
- the viscoelastic material 16 is provided at a portion where the semiconductor packages 20a and 20b are joined.
- the viscoelastic material 16 has a heat dissipation function and can communicate in the millimeter wave band.
- a dielectric transmission line 21 is configured.
- a dielectric material 21 'capable of millimeter wave band communication is used.
- the chassis 11 is omitted from the in-millimeter-wave dielectric transmission device 200 shown in FIG. In this configuration, the semiconductor packages 20a and 20b are transmitted only through the viscoelastic material 16.
- a semiconductor package 20a is attached to the lower mounting substrate 10a.
- the semiconductor package 20a described in the first embodiment is used as the semiconductor package 20a.
- the lower substrate 10a and the semiconductor package 20a are soldered to each other with bump electrodes 9 by a conventional flip chip bonding method.
- a semiconductor chip 30 capable of millimeter wave band communication is provided on one interposer substrate 4.
- An antenna structure 32 is connected to the semiconductor chip 30.
- the semiconductor chip 30 and the antenna structure 32 on the interposer substrate 4 are covered with the mold resin 8.
- the semiconductor package 20b is mounted downward on the upper mounting substrate 10b.
- the semiconductor package 20b is mounted with its 180 ° posture inverted compared to the semiconductor package 20a.
- the semiconductor package 20b the semiconductor package 20 described in the first embodiment is used.
- the upper substrate 10b and the semiconductor package 20b are soldered and joined by protruding electrodes 9 such as bumps.
- the semiconductor package 20 b is provided with a semiconductor chip 30 capable of millimeter wave band communication under the other interposer substrate 4.
- the antenna structure 32 is connected to the semiconductor chip 30 in the same manner as the semiconductor package 20a.
- the semiconductor chip 30 and the antenna structure 32 under the interposer substrate 4 are covered with the mold resin 8.
- the lower substrate 10a and the upper substrate 10b for mounting are attached to the support column 70.
- substrate 10a, 10b is fixed to the support
- a rod-shaped metal member is used for the column 70.
- female screws are provided at both ends of the column 70. Even in this example, although not shown, the millimeter wave signal S is transmitted between the antenna structures 32 via a dielectric transmission path made of the mold resin 8 and the viscoelastic material 16.
- the chassis 11 shown in FIG. 4 is omitted, and the viscoelastic material 16 is provided between the semiconductor packages 20a and 20b. is there.
- the adhesion between the semiconductor package 20a and the semiconductor package 20b can be improved, so that the antenna coupling performance can be improved and the heat dissipation effect of the semiconductor packages 20a and 20b can be achieved at the same time.
- the viscoelastic material 16 forming the dielectric transmission path 21 between the semiconductor packages 20a and 20b also serves as a heat dissipation material, the heat generated in the semiconductor packages 20a and 20b can be dissipated. Further, it is possible to transmit the millimeter wave signal S between the two semiconductor packages 20a and 20b via the viscoelastic material 16 forming the dielectric transmission path 21.
- the antenna structure 32 ′ is arranged side by side on the semiconductor chip 30 of the interposer substrate 4.
- the semiconductor package 20c having the antenna structure 32 ' provides a structure of the in-millimeter-wave dielectric transmission device 400 having a package-on-package structure (hereinafter referred to as a POP structure).
- a semiconductor package 20c shown in FIG. 11 includes an interposer substrate 4, a mold resin 8, a semiconductor chip 30 capable of millimeter wave band communication, and an antenna structure 32 '.
- the semiconductor chip 30 performs communication processing in the millimeter wave band.
- a system LSI in which the LSI function unit 201 and the signal generation unit 202 as shown in FIG. 2 are integrated is used (see FIG. 2).
- the antenna structure 32 ′ is arranged in parallel with the semiconductor chip 30 on the interposer substrate 4. Compared to other embodiments, the arrangement position of the antenna structure 32 ′ in the semiconductor package 20 c is different.
- a microstrip line 33 and an antenna 39 are patterned on the right side of the antenna terminal 31 of the semiconductor chip 30.
- a patch antenna is used as the antenna 39.
- the antenna terminal 31 is formed on the back surface of the semiconductor chip 30, and a microstrip line 33 is wired (connected) to the antenna terminal 31. If such a formation method is adopted, the millimeter wave signal S between the antenna terminal 31 and the antenna 39 can be transmitted efficiently.
- the mounting method of the semiconductor chip 30 on the interposer substrate 4 is the same as that of the first embodiment, the description thereof is omitted.
- the antenna structure 32 ′ is formed on the interposer substrate 4, the antenna 39 is formed side by side on the semiconductor chip 30 as shown in FIG. 12B.
- the antenna 39 is arranged on the semiconductor chip 30 to form the microstrip line 33 from the antenna terminal 31 on the interposer substrate 4, and is formed at the tip of the microstrip line 33.
- a patch antenna having a predetermined length based on the wavelength ⁇ of the millimeter wave signal S, for example, about 600 ⁇ m per side is employed.
- the antenna terminal 31 is previously drawn from the output point of the antenna switching unit 38 (see FIG. 2) mounted inside the semiconductor chip 30.
- the antenna structure 32 ′ is configured by the antenna terminal 31, the microstrip line 33, and the antenna 39 of the semiconductor chip 30 on the interposer substrate 4.
- the semiconductor chip 30 and the antenna structure 32 ′ on the interposer substrate 4 are covered and insulated.
- the mold resin 8 the epoxy resin described in the first embodiment is used.
- protruding electrodes 9 such as bumps for flip chip bonding are formed under the interposer substrate 4.
- the in-millimeter-wave dielectric transmission device 400 shown in FIG. 13 has a structure in which the semiconductor packages 20c shown in FIG.
- the in-millimeter-wave dielectric transmission device 400 is configured such that two semiconductor packages 20c and 20d are connected by a protruding electrode 9 to constitute the in-millimeter-wave dielectric transmission device 400 having a POP structure.
- the in-millimeter-wave dielectric transmission device 400 is obtained by integrating a plurality of semiconductor packages 20c, 20d and the like on the mounting substrate 10. Refer to FIG. 2 for an internal configuration example of the semiconductor packages 20c and 20d.
- the semiconductor packages 20c and 20d in which the semiconductor chip 30 and the antenna structure 32 'are sealed with the mold resin 8 are joined by the protruding electrodes 9 (solder balls) to form a laminated semiconductor package 80.
- a viscoelastic material 16 is disposed between the surface of the lower semiconductor package 20c and the interposer substrate 4 of the upper semiconductor package 20d to improve heat dissipation and adhesion.
- As the viscoelastic material 16 a viscoelastic resin having a relative dielectric constant ⁇ 4 is used.
- the millimeter wave signal S is transmitted through the dielectrics of the mold resin 8 of the semiconductor package 20c, the viscoelastic material 16, and the interposer substrate 4 of the semiconductor package 20d.
- terminal electrode pattern wired to the protruding electrode 9 of each interposer substrate 4 of the upper and lower semiconductor packages 20c and 20d can be reduced as compared with the conventional POP structure semiconductor package.
- the semiconductor packages 20c and 20d are prepared, and the semiconductor package 20c is mounted on the substrate 10 for mounting. It is preferable to prepare a substrate 10 having a terminal electrode pattern 10c for bonding bump electrodes. The terminal electrode pattern 10c of the substrate 10 and the protruding electrode 9 of the semiconductor package 20c are mounted by soldering. Thereby, the semiconductor package 20 c can be mounted on the mounting substrate 10.
- the semiconductor package 20d may be prepared such that the upper surface of the mold resin 8 has a mesa shape.
- the upper surface mesa shape of the semiconductor package 20d is obtained by forming concave portions having inclined surfaces in four directions in the cavity of the injection mold and forming inclined surfaces in the upper four directions of the mold resin 8 using this mold.
- the semiconductor package 20d is mounted on the semiconductor package 20c.
- the viscoelastic material 16 is inserted between the mold resin 8 on the front surface (upper surface) of the semiconductor package 20c and the interposer substrate 4 on the rear surface (lower surface) of the semiconductor package 20d.
- a viscoelastic epoxy resin having a relative dielectric constant ⁇ 4 is used for the viscoelastic material 16.
- the antenna structure 32 'of the semiconductor package 20c and the antenna structure 32' of the semiconductor package 20d are overlaid so as to match.
- the dielectric transmission path 21 includes the mold resin 8 of the semiconductor package 20c, the viscoelastic material 16, and the interposer substrate 4 of the semiconductor package 20d.
- the terminal It is possible to reduce the number of connectors and cables.
- ⁇ Fifth Embodiment> [Configuration example of in-millimeter-wave dielectric transmission device 500]
- the fifth embodiment is characterized in that data transfer between a plurality of semiconductor packages 20 arranged in a horizontal direction is performed by millimeter waves.
- two semiconductor packages 20 e and 20 f each having a semiconductor chip 30 are mounted side by side on the same mounting substrate 10, and a dielectric transmission path 21 formed in a region defining chassis 11.
- the communication process can be executed via Refer to FIG. 2 for an internal configuration example of the semiconductor packages 20e and 20f.
- the dielectric transmission path 21 is provided along the substrate surface.
- the dielectric transmission path 21 is configured by filling a predetermined dielectric material 21 ′ into a region defining through-hole 11 b (or groove) provided in the chassis 11.
- a glass epoxy resin having a relative dielectric constant ⁇ 1 is used for the dielectric material 21 ′.
- the in-millimeter-wave dielectric transmission device 500 in the dielectric transmission path 21 in the chassis 11, between the semiconductor packages 20e and 20f facing each antenna structure 32, the millimeter-wave transmission via the dielectric transmission path 21 is performed.
- the signal S is transmitted.
- the antenna structure 32 is drawn out to the surface of the mold resin 8 that seals the semiconductor chip 30.
- the antenna structure 32 is provided with a rod antenna.
- the antenna terminal 31 may be drawn from the upper part of the semiconductor chip 30 by a transmission line of a coaxial structure 33 ′ having a characteristic impedance of about 108 ⁇ .
- a rod antenna may be provided at the tip of this transmission line.
- a patch antenna may be used for the antenna structure 32 when reflectors can be respectively mounted on the transmission side and the reception side of the dielectric transmission line 21 in the chassis 11. At that time, the electromagnetic wave radiated from the patch antenna of one semiconductor package 20 e travels in the thickness direction of the chassis 11. Thereafter, the light is reflected by the reflector on the transmission side, and the electromagnetic wave travels in the plane direction of the chassis 11, and further, is reflected by the reflector on the reception side and reaches the patch antenna of the other semiconductor package 20f.
- FIG. 16A is a plan view showing an example of forming the terminal electrode 5 on the substrate 10
- FIG. 16B is a cross-sectional view taken along the arrow X 1 -X 1 of the substrate 10 shown in FIG. 16A.
- the in-millimeter-wave dielectric transmission device 500 shown in FIG. 15 is assembled using the mounting substrate 10, the chassis 11, and the two semiconductor packages 20e and 20f.
- the mounting substrate 10 for juxtaposing the semiconductor packages 20e and 20f shown in FIG. 16A is formed.
- the semiconductor packages 20e and 20f those having the semiconductor chip 30 and the antenna structure 32 are used.
- a plurality of terminal electrode patterns 10 c are formed on the substrate 10.
- the terminal electrode pattern 10c joins the protruding electrodes 9 of the semiconductor packages 20e and 20f, and when the substrate 10 is formed of a copper foil substrate, for example, it is formed by patterning the copper foil using a resist film as a mask.
- FIG. 17A is a plan view showing an example of formation of the dielectric transmission path 21 in the chassis 11, and FIG. 17B is a cross-sectional view taken along the line X2-X2 of the substrate 10 shown in FIG. 17A.
- the chassis 11 for mounting the mounting substrate 10 shown in FIG. 17A is prepared.
- the dielectric transmission path 21 is formed in the chassis 11.
- a region defining through-hole 11 b (or groove) is formed at a predetermined position of the chassis 11.
- the through portion 11b may be provided along the surface of the chassis 11 and processed so as to connect the mounting regions of the semiconductor packages 20e and 20f.
- a predetermined dielectric material 21 ′ is filled in the through-hole 11 b shown in FIG. 17B.
- a glass epoxy resin having a relative dielectric constant ⁇ 1 may be used.
- the chassis 11 having the dielectric transmission path 21 as shown in FIG. 17C is obtained.
- the semiconductor packages 20e and 20f are mounted on the substrate 10 for mounting. Refer to FIG. 4 for the mounting method. Then, the semiconductor packages 20e and 20f mounted on the mounting substrate 10 as shown in FIG. 18B are mounted on the chassis 11 shown in FIG. 17C. At that time, the antenna 39 of the semiconductor package 20 e and the antenna 39 of the semiconductor package 20 f are attached so as to be buried in the dielectric transmission path 21. At this time, the viscoelastic material 16 may be inserted between the mold resin 8 and the chassis 11 of the semiconductor package 20e and between the mold resin 8 and the chassis 11 of the semiconductor package 20f.
- the reflectors 9a and 9b are mounted on the transmitting side and the receiving side of the dielectric transmission line 21 in the chassis 11 at positions indicated by broken lines in the drawing in which the dielectric material 21 'is removed from FIG.
- an antenna structure 32 having a patch antenna on the semiconductor chip 30 can be adopted.
- the dielectric transmission path 21 at that time includes the mold resin 8.
- the entire path of the dielectric transmission path 21 is made up of the reflectors 9a. It becomes concave including 9b.
- the in-millimeter-wave dielectric transmission device 500 in which the two semiconductor packages 20e and 20f are arranged in parallel on the chassis 11 as shown in FIG. 15 can be formed.
- the two semiconductor packages 20e and 20f each having the semiconductor chip 30 are mounted side by side on the same mounting substrate 10.
- a dielectric transmission path 21 is provided in the chassis 11 for area definition.
- the millimeter wave signal S is used between the two semiconductor packages 20e and 20f mounted side by side on the same mounting substrate 10 via the dielectric transmission path 21 provided in the chassis 11. Communication processing can be executed. Moreover, since the dielectric transmission path 21 formed inside the chassis 11 is disposed so as to be in close contact between the two semiconductor packages 20e and 20f, the chassis 11 for fixing the substrate 10 on which the semiconductor packages 20e and 20f are mounted is fixed. It becomes possible to combine the structure of. Moreover, since the chassis 11 also serves as the dielectric transmission path 21, the configuration of the electronic device is simplified.
- FIGS. 19A and 19B a configuration example of the in-millimeter-wave dielectric transmission system 600 as the sixth embodiment will be described with reference to FIGS. 19A and 19B.
- a semiconductor package 20g capable of in-millimeter-wave dielectric transmission is mounted on each of the two electronic devices 601 and 602.
- predetermined portions of two electronic devices 601 and 602 are brought into contact with each other to transmit a millimeter wave signal S.
- the first semiconductor package 20g capable of being transmitted in the millimeter wave dielectric is mounted.
- the semiconductor package 20g includes a semiconductor chip 30 capable of millimeter wave band communication, an antenna structure 32, and a convex dielectric transmission path 21.
- the semiconductor chip 30 is provided on one of the importer substrates 4.
- the antenna structure 32 is connected to the semiconductor chip 30.
- the mold resin 8 covers the semiconductor chip 30 and the antenna structure 32 on the impose substrate 4.
- the convex dielectric transmission path 21 of the electronic device 601 includes the mounting substrate 10, the convex projecting member 17, and the dielectric material 21 '.
- the mounting substrate 10 may be a member that also serves as the housing 12 a of the electronic device 601.
- the protruding member 17 may be a metal or a resin.
- the substrate 10 and the protruding member 17 are provided with an opening 18 that defines the dielectric transmission path 21.
- the opening 18 is provided at a position including the antenna structure 32.
- the opening 18 is filled with a predetermined dielectric material 21 '.
- a glass epoxy resin having a relative dielectric constant ⁇ 1 is used for the dielectric material 21 ′.
- the second semiconductor package 20h capable of being transmitted in the millimeter wave dielectric is mounted.
- the semiconductor package 20 h includes a semiconductor chip 30 capable of millimeter wave band communication, an antenna structure 32, and a concave dielectric transmission path 21.
- the semiconductor package 20h is configured in the same manner as the semiconductor package 20g except for the concave dielectric transmission path 21. Refer to FIG. 2 for an internal configuration example of the semiconductor packages 20g and 20h.
- the concave dielectric transmission line 21 of the electronic device 602 is configured to include the mounting substrate 10, a housing 12 b having a concave shape, and a dielectric material 21 ′.
- the mounting substrate 10 is attached to the housing 12 b of the electronic device 601.
- the housing 12b may be metal or resin.
- the substrate 10 is provided with an opening 18 that defines the dielectric transmission path 21.
- the opening 18 is provided at a position including the antenna structure 32.
- the opening 18 is filled with a predetermined dielectric material 21 '.
- a glass epoxy resin having a relative dielectric constant ⁇ 1 is used for the dielectric material 21 ′.
- the convex dielectric transmission path 21 of the electronic device 601 is fitted into the concave dielectric transmission path 21 of the electronic device 602 for use.
- the dielectric transmission path 21 capable of transmitting a millimeter wave signal is constructed between the semiconductor package 20g and the semiconductor package 20h.
- the antenna structures 32 of the semiconductor packages 20g and 20h are combined so as to face each other with the dielectric transmission path 21 interposed therebetween.
- the two electronic devices 601 and 602 are usually separated.
- the electronic device 601 is, for example, a portable battery-powered device
- the electronic device 602 is, for example, a stationary battery charger or a base station.
- the two electronic devices 601 and 602 are combined and used.
- the following combinations of the electronic devices 601 and 602 are possible.
- one electronic device 601 is a battery-powered device such as a mobile phone, a digital camera, a video camera, a game machine, a remote controller, or a shaving device
- the other electronic device 602 has its battery charger, image processing, etc. It becomes a base station etc. that perform.
- the electronic device 601 is connected to i.
- the electronic device 602 is a card reading / writing device or the like when it has a relatively thin appearance such as an IC card.
- a use mode such as a Felica card (R) can be realized.
- R Felica card
- the electronic device 601 is manufactured by preparing a housing 12a that combines the substrate 10 and the semiconductor package 20g capable of being transmitted in the millimeter wave dielectric shown in FIG. 20A.
- the semiconductor package 20g shown in FIG. 20A is mounted on the housing 12a.
- a semiconductor package 30 having a semiconductor chip 30 capable of millimeter wave communication, an antenna structure 32, and a convex dielectric transmission path 21 is used.
- the semiconductor chip 30 is provided on one of the importer substrates 4.
- the antenna structure 32 is provided at a terminal under the imposer substrate 4 on which the semiconductor chip 30 is mounted.
- the antenna structure 32 is connected to the semiconductor chip 30.
- the mold resin 8 is formed so as to cover the semiconductor chip 30 and the antenna structure 32 on the impose substrate 4.
- a protruding electrode 9 for flip-chip bonding is formed on a terminal under the importer substrate 4.
- the housing 12a is an exterior case of the mobile phone when the electronic device 601 is a mobile phone, for example.
- a pad electrode for flip chip bonding is formed on the semiconductor package mounting surface. Therefore, when the housing 12 a also serves as the substrate 10, the flip chip chip is mounted on the semiconductor package mounting surface of the housing 12 a. It is necessary to form a pad electrode for bonding.
- a method of attaching the substrate 10 on which the semiconductor package 20g is mounted to a predetermined position of the housing 12a may be used.
- the convex dielectric transmission path 21 is formed by joining a mounting case 12a and a convex projecting member 17.
- the dielectric transmission path 21 is defined by opening the opening 18 in the housing 12a and the protruding member 17.
- the opening 18 is preferably provided at a position including the antenna structure 32.
- the protruding member 17 may be a metal member or a resin member.
- the opening 18 is filled with a predetermined dielectric material 21 '.
- a glass epoxy resin having a relative dielectric constant ⁇ 1 is used as the dielectric material 21 '. Thereby, the convex dielectric transmission path 21 on the electronic device 601 side can be formed.
- the semiconductor package 20g capable of transmitting in the millimeter wave dielectric and the casing 12a with the convex dielectric transmission path are prepared, the semiconductor package 20g and the casing 12a are joined as shown in FIG. 20B. At this time, the semiconductor package 20g is joined to the casing 12a so that the protruding member 17 is positioned outside the casing 12a and the semiconductor package 20g is positioned on the inner wall surface of the casing 12a.
- flip-chip bonding is performed using the protruding electrode 9 formed on the terminal under the importer substrate 4.
- the pad electrode for flip chip bonding provided in advance on the semiconductor package mounting surface of the housing 12 a that also serves as the substrate 10 and the protruding electrode 9 formed on the terminal under the importer substrate 4 are solder-bonded.
- the semiconductor package 20h, the substrate 10, and the housing 12b that can be transmitted in the millimeter wave dielectric shown in FIG. 21A are prepared, and the electronic device 602 is manufactured.
- the semiconductor package 20h shown in FIG. 21A is first mounted on the substrate 10 and attached to the housing 12b.
- the substrate 10 is formed by forming a flip-chip bonding pad electrode on a semiconductor package mounting surface.
- the semiconductor package 20 h is flip-chip bonded using the protruding electrodes 9 formed on the terminals below the impose substrate 4.
- a pad electrode for flip chip bonding provided in advance on the semiconductor package mounting surface of the substrate 10 and a protruding electrode 9 formed on a terminal under the impose substrate 4 are solder-bonded.
- the substrate 10 on which the semiconductor package 20h is mounted is attached so as to close the window 12c opened at a predetermined position of the housing 12b.
- the semiconductor package 20h is similar to the semiconductor package 20g having the semiconductor chip 30 capable of millimeter wave band communication, the antenna structure 32, and the concave dielectric transmission path 21. Since an example of forming the semiconductor package 20h is the same as that of the semiconductor package 20g, the description thereof is omitted.
- the concave dielectric transmission path 21 is formed by the dielectric transmission path 21 defined by opening the opening 18 in the substrate 10 and the window portion 12c of the housing 12b.
- the opening 18 is preferably provided at a position including the antenna structure 32.
- the opening 18 is filled with a predetermined dielectric material 21 '.
- a glass epoxy resin having a relative dielectric constant ⁇ 1 is used as the dielectric material 21 '.
- the opening 18 may be omitted.
- the cylindrical member is embedded in the thickness direction of the substrate 10 so that the substantially center of the antenna structure 32 of the semiconductor package 20g is located at the center of the conductive cylindrical member. Good.
- the insulating member inside the cylindrical member forms the dielectric transmission path 21. Thereby, the concave dielectric transmission path 21 on the electronic device 602 side can be formed.
- the housing 12b shown in FIG. 21B is an outer case of the charger when the electronic device 602 is a charger that charges a battery of a mobile phone, for example.
- a housing 12b having a window 12c opened at a predetermined position is used.
- the window part 12c becomes a part which fits the protrusion member 17 of the electronic device 601 shown to FIG. 19A.
- a substrate 10 having a concave dielectric transmission path on which the semiconductor package 20h capable of transmitting in the millimeter wave dielectric is mounted, and a housing 12b having a window portion 12c are prepared.
- the semiconductor package 20h and the substrate 10 with the concave dielectric transmission path are attached to the window portion 12c of the housing 12b.
- the antenna structure 32 of the semiconductor package 20g of the electronic device 601 and the antenna structure 32 of the semiconductor package 20h are substantially centered. Align so that it is almost coincident with the center. Then, the substrate 10 is attached to the housing 12b. The substrate 10 is fixed to the housing 12b by a screwing structure.
- one electronic device 601 is provided with the semiconductor package 20g capable of millimeter-wave band communication, and the other electronic device 602 has a millimeter-wave communication.
- a semiconductor package 20h capable of waveband communication is provided.
- a dielectric transmission path 21 capable of transmitting millimeter wave signals is provided between the semiconductor packages 20g and 20h.
- the antenna structures 32 of the semiconductor packages 20g and 20h are brought into contact with each other with the dielectric transmission path 21 therebetween.
- the millimeter wave signal S can be transmitted from the semiconductor package 20g to the semiconductor package 20h via the dielectric transmission path 21 capable of millimeter wave signal transmission provided between the semiconductor package 20g and the semiconductor package 20h.
- communication processing and the like can be performed during charging between one electronic device 601 and the other electronic device 602 without depending on a communication cable or the like connecting the electronic device 601 and the electronic device 602. .
- the in-millimeter-wave dielectric transmission devices 200 to 500 and the in-millimeter-wave dielectric transmission system 600 according to the present invention can be realized with a simple and inexpensive configuration.
- high-speed data transmission can be realized between the semiconductor packages 20a and 20b, the semiconductor packages 20c and 20d, and the semiconductor packages 20e, 20f, 20g, and 20h.
- FIG. 22 to 28 are views for explaining a semiconductor package 20j (equivalent to the in-millimeter-wave dielectric transmission device in this example) as the seventh embodiment.
- FIG. 22 is a diagram illustrating a comparative example with respect to the seventh embodiment.
- FIG. 23 is a diagram illustrating a configuration outline of a semiconductor package 20j according to the seventh embodiment.
- FIG. 24 is a diagram illustrating a specific example of the antenna structure used in the semiconductor package 20j of the seventh embodiment.
- FIG. 25 is a diagram for explaining a specific example of the semiconductor package 20j of the seventh embodiment to which the antenna structure shown in FIG. 24 is applied.
- 26 to 28 are diagrams showing simulation characteristic examples in the semiconductor package 20j of the seventh embodiment shown in FIG.
- the seventh embodiment is characterized in that a plurality of semiconductor chips 30 are arranged on a substrate in one semiconductor package 20j and millimeter wave transmission is performed between the semiconductor chips 30. Although the millimeter-wave transmission is performed between the semiconductor chips 30 in the same package, the semiconductor package 20j itself constitutes an in-millimeter-wave dielectric transmission device.
- FIG. 22 shows a semiconductor package 1x as a comparative example to which the seventh embodiment is not applied.
- the semiconductor package 1x is a multi-chip package in which a plurality (three in the figure) of semiconductor chips 2_1, 2_2, 2_3 as system LSIs are arranged in parallel in one package.
- a plurality of pad electrodes 3 are formed on the surfaces of the semiconductor chips 2_1, 2_2, 2_3.
- bonding wires 7 are used for signal transmission connections between the semiconductor chips 2_1 and 2_2 and between the semiconductor chips 2_1 and 2_2. All the semiconductor chips 2_1, 2_2, 2_3 are protected by a resinous LSI package (mold resin 8) and mounted on an interposer substrate 4x (LSI package substrate).
- FIG. 23 shows a configuration outline of the seventh embodiment.
- FIG. 23A is a schematic plan view
- FIG. 23B is a schematic cross-sectional view.
- the semiconductor package 20j of the seventh embodiment is a multi-chip package in which three semiconductor chips 30_1, 30_2, and 30_3 that can be transmitted in the millimeter wave dielectric are arranged in parallel in one package. Unlike the comparative example, the pad electrode 3 is not formed on the surfaces of the semiconductor chips 30_1, 30_2, and 30_3.
- All the semiconductor chips 30_1, 30_2, 30_3 are protected by a resinous LSI package (mold resin 8) and mounted on an LSI package substrate 4j (interposer substrate).
- the mold resin 8 is formed of a dielectric material including a dielectric capable of transmitting millimeter wave signals.
- terminals such as a power supply unit that are not to be converted into millimeter wave signals are connected to the bonding wires from the pad electrodes of the semiconductor chips 30_1, 30_2, and 30_3 in the same manner as in the comparative example. Wired through.
- the LSI function unit 201, the millimeter wave generation unit 202, and the antenna switching unit 38 of the antenna coupling unit 203 are incorporated. Since the semiconductor chips 30_1, 30_2, and 30_3 are arranged in parallel in one package, an antenna 39 having directivity in the thickness (normal) direction of the substrate (for example, a patch antenna) is used. However, it is preferable to use a substrate having directivity in the plane direction of the substrate.
- a device such as providing a reflector in the mold resin 8 so as to form the dielectric transmission path 21 is used. It is preferable to improve the transmission efficiency by changing the traveling direction of the millimeter wave to be between the antennas 39.
- the millimeter wave generation unit 202 includes an LSI function unit 201, a parallel / serial conversion circuit 34, a modulation circuit 35, a frequency conversion circuit 36, an amplifier 37, and an antenna switching unit 38 as transmission systems.
- an amplifier 44, a frequency conversion circuit 45, a demodulation circuit 46, and a serial / parallel conversion circuit 47 are provided.
- a signal transmission is performed between the semiconductor chips 30_1 and 30_2 and between the semiconductor chips 30_1 and 30_3, and no signal transmission is performed between the semiconductor chips 30_2 and 30_3.
- a large number of data signals generated by the LSI function unit 201 are serialized by the parallel-serial conversion circuit 34, modulated by the modulation circuit 35, and converted to the millimeter wave band by the frequency conversion circuit 36.
- the signal is up-converted, amplified by the amplifier 37, and radiated as a radio wave into the mold resin 8 (LSI package) via the antenna 39 of the antenna coupling unit 203.
- the radio wave in the millimeter wave band is received by the antenna 39, amplified by the amplifier 44, down-converted to a baseband signal by the frequency conversion circuit 45, demodulated by the demodulation circuit 46, and serial-parallel converted. Parallelized by the circuit 47 and transferred to the LSI function unit 201.
- the semiconductor package 20j of the seventh embodiment data transfer in a multi-chip package in which a plurality of semiconductor chips 30 (system LSIs) are arranged in one package is performed by millimeter waves.
- the millimeter wave signal transmission path through which millimeter waves are transmitted is not air (free space transmission path), but dielectric transmission using a mold resin 8 formed of a dielectric material including a dielectric capable of transmitting millimeter wave signals.
- Road 21 is formed.
- the bonding wires 7 and the pad electrodes 3 that are necessary for the semiconductor package 1x of the comparative example can be greatly reduced, the chip area can be reduced, the chip cost can be reduced, and the degree of freedom of chip arrangement can be reduced. Since it improves, it also leads to the improvement of the frame design. Further, by replacing the signal transmission by electric wiring using the bonding wire 7 and the pad electrode 3 with transmission by a millimeter wave signal, it is freed from problems such as wiring delay and impedance mismatch.
- an inverted F-type antenna 39j that can be made smaller than the patch antenna is used.
- the inverted F-type antenna 39j is omnidirectional (excluding the longitudinal direction of the radiating element).
- the inverted F-type antenna 39j has directivity not only in the thickness (normal) direction of the substrate but also in the plane direction. It is convenient for transmission with a millimeter wave signal between the semiconductor chips 30_1 and 30_2 and between the semiconductor chips 30_1 and 30_3.
- FIGS. 24B and 24C are examples in which a 60 GHz band inverted-F antenna 39j is mounted as the semiconductor package 20j.
- An inverted F-type antenna 39j having the structure shown in FIG. 24A is mounted on each 2 mm square semiconductor chip 30_1, 30_2, 30_3, and the entire semiconductor chip 30_1, 30_2, 30_3 is sealed with a mold resin 8.
- the inverted F-type antenna 39j forms a 2 mm square semiconductor chip 30, for example, an M1 layer 30_M1 on a 300 ⁇ m thick silicon layer 30_M0 on a nearly 2 mm square surface with a thickness of 0.2 ⁇ m (details will be described later). Is formed. M1 layer 30_M1 Over the (ground pattern 39GP), an oxide film layer 39_M8 having a thickness of 6 ⁇ m is formed.
- the silicon Si of the silicon layer 30_M0 has a relative dielectric constant of 11.9 and a resistivity of 10 ⁇ ⁇ cm
- the oxide film of the oxide film layer 39_M8 has a relative dielectric constant of 3.5 and a dielectric loss tangent tan ⁇ of 0.02.
- a radiation element 39RE having a thickness of 0.8 ⁇ m is formed on the M9 layer 30_M9 on the oxide film layer 39_M8 so as to protrude from the wide ground pattern 39GP.
- the radiating element 39RE is formed along the side 30_a at a position whose longitudinal direction is 50 ⁇ m inside from one side 30_a of the semiconductor chip 30.
- the first element length La which is the length from the midpoint position 39RE_c of the side 30_a to the one end point 39RE_a, is set to 560 ⁇ m, and the radiating element 39RE is set to the length from the midpoint position 39RE_c to the other end point 39RE_g.
- the two-element length Lg is set to 272 ⁇ m.
- Feed lines 39LD_g and 39LD_c are led out for feeding from the end point 39RE_g and the midpoint position 39RE_c of the radiation element 39RE, respectively.
- the line width W of the power supply wirings 39LD_g and 39LD_c is set to 13 ⁇ m.
- the power supply wiring 39LD_g has a lead length H of 113 ⁇ m, the end point thereof is a first power supply point 39F_g, and further falls to the M1 layer 30_M1 side at the first power supply point 39F_g and is connected to the ground pattern 39GP.
- the power supply wiring 39LD_c has a lead length H set to be longer than the lead length H (113 ⁇ m) of the power supply wiring 39LD_g, and the end point thereof becomes the second power supply point 39F_c.
- the ground pattern 39GP is formed not to the entire 2 mm square, but to the inside of the side 30_a by the formation position H (50 ⁇ m) of the radiation element 39RE and the lead length H (113 ⁇ m) of the power supply wiring 39LD_g. Yes.
- FIG. 25 two semiconductor chips 30 (for example, 30_1 and 30_2) on which the inverted F-type antenna 39j shown in FIG. 24 is formed are inverted on the LSI package substrate 4j with an inter-chip distance d therebetween. A state in which the mold antennas 39j are arranged in parallel so as to face each other is shown.
- the LSI package substrate 4j is made of a dielectric material, and has a relative dielectric constant of 3.5, a dielectric loss tangent tan ⁇ of 0.02, and a thickness of 0.4 mm.
- FIG. 25B shows a first example of a schematic cross-sectional view thereof.
- Both semiconductor chips 30_1 and 30_2 are sealed with a resinous LSI package (mold resin 8).
- the dielectric material of the mold resin 8 has a relative dielectric constant of 4.0, a dielectric loss tangent tan ⁇ of 0.01, and a thickness T of 1 mm.
- FIG. 26 to FIG. 28 show the S parameter frequency when the semiconductor chips 30_1 and 30_2 shown in FIG. 25 are arranged so that the respective inverted F-type antennas 39j face each other on the plane and the inter-chip distance d is changed. Characteristics are shown. 26 shows a case where the inter-chip distance d is 1 mm, FIG. 27 shows a case where the inter-chip distance d is 2 mm, and FIG. 28 shows a case where the inter-chip distance d is 3 mm.
- the reflection loss shows good characteristics in the vicinity of 60 GHz regardless of the distance d between the chips. This means that there is little reflection due to impedance mismatching, and it can be said that good communication can be performed.
- the electromagnetic waves radiated from the inverted F-type antenna 39j between the plurality of semiconductor chips 30 in the same package pass through the mold resin 8 formed of a dielectric material. Propagate as transmission path 21.
- a millimeter wave signal is transmitted through the dielectric transmission path 21 between the two semiconductor chips 30 facing each inverted F-type antenna 39j.
- Communication processing can be executed between the semiconductor chips 30 via the dielectric transmission path 21 formed in the mold resin 8.
- FIG. 29 to FIG. 33 are diagrams for explaining an in-millimeter-wave dielectric transmission system 600k (electronic device) as the eighth embodiment.
- FIG. 29 is a diagram illustrating a comparative example with respect to the eighth embodiment.
- FIG. 30 is a diagram illustrating a configuration outline of an in-millimeter-wave dielectric transmission system 600k according to the eighth embodiment.
- 31 to 33 are diagrams showing examples of simulation characteristics in the in-millimeter-wave dielectric transmission system 600k of the eighth embodiment shown in FIG.
- two semiconductor packages 20j_1 and 20j_2 of the seventh embodiment on which a plurality of semiconductor chips 30 capable of millimeter wave transmission are mounted are arranged to face each other, and each of the semiconductor packages 20j_1 and 20j_2 It is characterized in that millimeter wave transmission is performed between the semiconductor chips 30). Millimeter wave transmission is performed between the semiconductor chips 30 between different packages, and a millimeter wave signal transmission path 21k is formed between the semiconductor packages 20j_1 and 20j_2 arranged to face each other.
- FIG. 29 shows an electronic apparatus 700x as a comparative example to which the eighth embodiment is not applied.
- the configuration is almost the same as that of the electronic device 700 shown in FIG. 39, in which the semiconductor packages 1x_1 and 1x_2 are stacked. In other words, this is a configuration in which two multi-chip packages are arranged one above the other.
- the electronic device 700x is different from the electronic device 700 shown in FIG. 39 in that a plurality (two in the figure) of semiconductor chips 2_1 and 2_2 are mounted in the semiconductor packages 1x_1 and 1x_2.
- a plurality of pad electrodes 3 are formed on the surfaces of the semiconductor chips 2_1 and 2_2 in the semiconductor packages 1x_1 and 1x_2 for data transmission in the semiconductor packages 1x_1 and 1x_2.
- the bonding wire 7 is used for connection for signal transmission.
- data transmission between the semiconductor packages 1x_1 and 1x_2 is performed by connecting the connectors 14 to the boards 10a and 10b, and connecting the data transmission board 15x (or the cable 15) between the connectors 14.
- FIG. 30 shows a schematic configuration of an in-millimeter wave dielectric transmission system 600k (electronic device) according to the eighth embodiment.
- FIG. 30A is a schematic plan view
- FIG. 30B is a schematic cross-sectional view.
- a plurality of semiconductor packages 20j_1 and 20j_2 of the seventh embodiment are stacked at the inter-package distance h. That is, this is a configuration in which two multi-chip packages to which the seventh embodiment is applied are arranged vertically.
- the plurality of semiconductor packages 20 are stacked, it is the same as in the second embodiment (FIG. 4), the third embodiment (FIG. 10), and the sixth embodiment (FIG. 19). The difference is that a plurality of (two in the figure) semiconductor chips 30_1 and 30_2 are mounted.
- a millimeter wave signal transmission path 21k which is a millimeter wave propagation path, is formed between the semiconductor packages 20j_1 and 20j_2.
- the millimeter wave signal transmission line 21k may be a free space transmission line, but is preferably formed of a waveguide structure having a millimeter wave confinement structure such as a waveguide, a transmission line, a dielectric line, or a dielectric, It shall have the characteristic which transmits the electromagnetic wave of a zone
- the dielectric transmission line 21 may be configured to include a dielectric material having a specific dielectric constant within a certain range and a dielectric loss tangent within a certain range.
- the “certain range” may be a range in which the relative permittivity and the dielectric loss tangent of the dielectric material can obtain the effects of the present embodiment, and may be a value determined in advance as long as it is within that range. That is, the dielectric material may be any material that can transmit a millimeter-wave signal having such characteristics as to obtain the effects of the present embodiment. Although it is not determined only by the dielectric material itself and is also related to the transmission path length and the millimeter wave frequency, it is not necessarily determined clearly, but as an example, it is as follows.
- the dielectric material In order to transmit a millimeter-wave signal at high speed in the dielectric transmission path 21, the dielectric material has a relative dielectric constant of about 2 to 10 (preferably 3 to 6) and a dielectric loss tangent of 0.00001 to 0. Desirably about 0.01 (preferably 0.00001 to 0.001).
- the dielectric material satisfying such conditions for example, those made of acrylic resin, urethane resin, epoxy resin, silicone, polyimide, and cyanoacrylate resin can be used.
- the millimeter-wave signal transmission path 21k In order to confine the millimeter-wave signal in the millimeter-wave signal transmission path 21k, the millimeter-wave signal transmission path 21k has a hollow conductor that is surrounded by a shielding material and hollow inside, in addition to the dielectric transmission path. It may be a waveguide.
- the inverted F-type antenna 39j in the semiconductor package 20j has directivity not only in the substrate plane direction (horizontal direction) but also in the substrate thickness direction (vertical direction). Therefore, the present invention can be applied to the transmission of millimeter wave signals between the semiconductor chips 20 mounted on the semiconductor packages 20j_1 and 20j_2 arranged in parallel in the stacked state.
- the antenna 39 in the package has directivity only in the substrate plane direction (horizontal direction), this is not realized.
- the resin thickness must be equal to or longer than the antenna length, and because of the linear antenna, the vertical direction is zero directivity (NULL) and communication is not possible. .
- the in-millimeter-wave dielectric transmission system 600k of the eighth embodiment data transfer between multi-chip packages in which a plurality of semiconductor chips 30 (system LSIs) are arranged in one package is performed by millimeter waves. ing.
- the millimeter wave signal transmission path 21k through which millimeter waves are transmitted is a free space transmission path, a dielectric transmission path having a millimeter wave confinement function, or a hollow waveguide.
- a large number of connectors 14 and data transmission boards 15x that are necessary for the electronic device 700x of the comparative example can be reduced, so that high-speed transmission line routing is complicated and high-speed connector handling is possible. Difficulties and reduced placement flexibility are freed from problems.
- FIG. 31 to FIG. 33 semiconductor packages 20j_1 and 20j_2 each having a plurality of semiconductor chips 30 on which inverted F-type antennas 39j are mounted as shown in FIG.
- the S parameter frequency characteristics when V is changed are shown.
- FIG. 31 shows a case where the inter-package distance h is 0 mm
- FIG. 32 shows a case where the inter-package distance h is 1 mm
- the reflection loss shows good characteristics in the vicinity of 60 GHz regardless of the inter-package distance h. This means that there is little reflection due to impedance mismatching, and it can be said that good communication can be performed.
- electromagnetic waves radiated from the inverted F-type antenna 39j of the semiconductor chip 30 propagate through the millimeter wave signal transmission path 21k between the stacked semiconductor packages 20j.
- a millimeter wave signal is transmitted through the millimeter wave signal transmission path 21k between the two semiconductor chips 30 facing each inverted F antenna 39j.
- communication processing can be executed via the millimeter wave signal transmission path 21k.
- FIG. 34 is a diagram for explaining a semiconductor package 20p (in this example, equivalent to an in-millimeter-wave dielectric transmission device) of a first modification.
- a semiconductor package 20p in one semiconductor package 20p, a plurality of semiconductor chips 30 are arranged on the substrate in a stacked state so that the antenna structure (antenna 39) is coaxial, and between the semiconductor chips 30. It is characterized by performing millimeter wave transmission. Millimeter wave transmission is performed between the semiconductor chips 30 in the same package, and the semiconductor package 20p itself constitutes an in-millimeter wave dielectric transmission device.
- the second embodiment (FIG. 4), the third embodiment (FIG. 10), the sixth embodiment (FIG. 19), or the eighth embodiment (FIG. 30).
- the difference is that all semiconductor chips 30 are mounted in the same package.
- an antenna for example, a patch antenna having directivity in the thickness direction of the substrate (semiconductor chip 30) is used.
- a dielectric material 16p (preferably viscoelastic material 16) capable of millimeter wave band communication is provided at a portion where each semiconductor chip 30 is joined.
- the dielectric material 16p constitutes a dielectric transmission line 21 that has a heat dissipation function and is capable of millimeter wave band communication.
- the plurality of semiconductor chips 30 are stacked and protected by the mold resin 8 and mounted on the LSI package substrate 4p (interposer substrate).
- the LSI package substrate 4p and the mold resin 8 are formed of a dielectric material including a dielectric capable of transmitting millimeter wave signals.
- Such a semiconductor package 20p is further mounted on a mounting substrate 10p.
- the substrate 10p is also made of a dielectric material including a dielectric capable of transmitting millimeter wave signals.
- a millimeter wave signal from (or “to”) the semiconductor chip 30 at the lowermost part (on the LSI package substrate 4p side) in the semiconductor package 20p is transmitted in the substrate 10p.
- a method of transmitting a millimeter wave signal within the substrate 10p is referred to as a “millimeter wave substrate transmission method” or a “millimeter wave tangible transmission method”.
- this opening portion row may be omitted.
- the semiconductor package 20p according to the first modification can perform data transfer between the stacked semiconductor chips 30_1 and 30_2 by millimeter waves.
- the package area can be reduced as compared with the case of arranging them in a plane as in the seventh embodiment.
- two semiconductor chips 30 are stacked.
- three or more chips may be stacked, and as the number increases, the advantage over the seventh embodiment increases.
- the semiconductor package 20p of the first modified example not only performs data transfer between a plurality of semiconductor chips 30 in the same package by millimeter waves, but also transfers data between the semiconductor chips 30 in other semiconductor packages 20. It can be performed by in-substrate transmission with millimeter waves.
- FIG. 35 is a diagram for explaining a semiconductor package 20q (equivalent to the in-millimeter-wave dielectric transmission device in this example) of the second modification.
- a semiconductor package 20q similar to that of the seventh embodiment is further mounted on a mounting substrate 10q, similarly to the first modification.
- the substrate 10q is also formed of a dielectric material including a dielectric capable of transmitting a millimeter wave signal, so that an in-millimeter-wave transmission system that transmits a millimeter wave signal in the substrate 10q is applied.
- the semiconductor package 20q of the second modified example not only performs data transfer between a plurality of semiconductor chips 30 in the same package by millimeter waves, but also transfers data between the semiconductor chips 30 in other semiconductor packages 20. It can be performed by in-substrate transmission with millimeter waves.
- FIG. 36 is a diagram for explaining the semiconductor package 20r and the in-millimeter-wave dielectric transmission system 600r of the third modification.
- the third modification is characterized in that free space transmission is used in combination with the in-millimeter-wave transmission system shown in the first and second modifications in data transfer between a plurality of semiconductor packages 20r. The number of semiconductor chips 30 mounted in one semiconductor package 20r is not questioned.
- an antenna having directivity for example, an inverted F type antenna 39j
- an antenna having directivity for example, an inverted F type antenna 39j
- each semiconductor package 20r the antenna structure 32 'is arranged in parallel with the semiconductor chip 30 of the interposer substrate 4r, as in the fourth embodiment. Further, each semiconductor package 20r is mounted on a mounting substrate 10r as in the first and second modifications.
- the substrate 10r is also formed of a dielectric material including a dielectric capable of transmitting a millimeter wave signal, so that an in-millimeter-wave substrate transmission method for transmitting a millimeter wave signal in the substrate 10r is applied.
- the antenna 39 is not only the thickness direction of the substrate 10r (semiconductor chip 30) but also the one having directivity in the plane direction of the substrate 10r (for example, an inverted F type antenna 39j).
- the millimeter wave radiated in the plane direction is transmitted to the other semiconductor package 20r through a free space transmission path 21r as a millimeter wave signal transmission path.
- data transfer between a plurality of semiconductor packages 20r can be performed not only by in-substrate transmission in the millimeter wave band but also through the free space transmission path 21r.
- FIG. 37 is a diagram for explaining an in-millimeter-wave dielectric transmission system 600s according to a fourth modification.
- the fourth modification is characterized in that data transfer between a plurality of semiconductor packages 20 arranged in a horizontal direction is performed by millimeter waves.
- the difference from the fifth embodiment is that each semiconductor package 20 is mounted on different mounting boards 10_1 and 10_2.
- the millimeter wave signal transmission line 21s may be any other than a free space transmission line, and for example, a dielectric transmission line formed of a dielectric material is preferably applied.
- the dielectric transmission line may be, for example, a dielectric transmission line formed in the region defining chassis 11 as in the fifth embodiment.
- the antenna structure it is preferable to use an antenna structure having directivity in the plane direction with respect to the substrate, such as a rod antenna.
- the antenna 39 may be drawn out to the surface of the mold resin 8 that seals the semiconductor chip 30 so as to protrude into the millimeter wave signal transmission path 21s.
- the fourth modification is an effective technique when, for example, a plurality of semiconductor packages 20 are arranged in a laminated state, and a space for arranging them in a laminated state on the same axis cannot be secured due to layout restrictions.
- the present invention is extremely suitable when applied to an in-millimeter-wave dielectric transmission system that transmits a millimeter-wave band signal having a carrier frequency of 30 GHz to 300 GHz for carrying movie images or computer images at high speed.
- the system includes a digital recording / reproducing device, a terrestrial television receiver, a mobile phone, a game machine, a computer, a communication device, and the like.
- SYMBOLS 1 ... Semiconductor package, 2 ... Semiconductor chip, 3 ... Pad electrode, 4 ... Interposer substrate, 5 ... Terminal electrode, 6 ... Lead electrode, 7 ... Bonding wire, 8 ... Mold resin, 9 ... Projection electrode (bump), 10, 10 '... substrate, 11 ... chassis, 12, 12a, 12b ... housing, 13 ... screw structure, 14 ... connector, 15 ... cable, 16, 16a, 16b ... viscoelastic material, 20, 20a-20f ... semiconductor package, 21 ... Dielectric transmission line (millimeter wave transmission member), 21 '... Dielectric material, 30 ... Semiconductor chip, 31 ... Antenna terminal, 32, 32' ...
- Antenna structure 33 ... Microstrip line, 39 ... Antenna, 39j ... Inverted F type antenna, 70... Support, 80... Semiconductor package, 201... LSI function unit, 202... Millimeter wave generation unit, 203, 203 ′. (Signal coupling unit), 204 ... electric interface, 205 ... millimeter wave interface, 206 ... dielectric section, 200, 300, 400,500 ... millimeter wave dielectric transmission device, 600 ... millimeter wave dielectric transmission system, 601, 602 ... Electronic equipment
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Abstract
Description
びミリ波誘電体内伝送システムに関する。
2.第2の実施形態(ミリ波誘電体内伝送装置200:構成例、組立例、内部構成
例、拡大構成例、シミュレーションモデル例、特性例)
3.第3の実施形態(ミリ波誘電体内伝送装置300:構成例)
4.第4の実施形態(半導体パッケージ20c:構成例、形成例
ミリ波誘電体内伝送装置400:構成例および組立例)
5.第5の実施形態(ミリ波誘電体内伝送装置500:構成例および形成例)
6.第6の実施形態(ミリ波誘電体内伝送システム600:構成例
電子機器201,202の形成例)
7.第7の実施形態(同一パッケージ内の複数の半導体チップ間のミリ波伝送)
8.第8の実施形態(第7の実施形態+異なるパッケージ間のミリ波伝送)
9.変形例(第1変形例~第4変形例)
[半導体パッケージ20の構成例]
図1を参照して、本発明に係る第1の実施形態としての半導体パッケージ20の構成例について説明する。図1に示す半導体パッケージ20は、半導体装置の一例を構成するものである。半導体パッケージ20は映画映像や、コンピュータ画像などを搬送する搬送周波数が30GHz乃至300GHzのミリ波帯の信号を高速に伝送するミリ波誘電体内伝送システムに適用可能なものである。ミリ波誘電体内伝送システムにはデジタル記録再生装置、地上波テレビ受像機、携帯電話機、ゲーム機、コンピュータ、通信装置などが含まれる。
図2を参照して、半導体パッケージ20の内部構成例について説明する。図2に示す半導体チップ30は、LSI機能部201、信号生成部202および双方向のアンテナ結合部203を有して構成される。アンテナ結合部203は信号結合部の一例またはその一部を構成し、ここにアンテナ結合部203とは、狭義的には半導体チップ30内の電子回路と、チップ内またはチップ外に配置されるアンテナとを結合する部分をいう。広義的には、当該半導体チップ30と誘電体伝送路21とを信号結合する部分をいう。
続いて、図3A~図3Eを参照して、半導体パッケージ20の形成例について説明する。まず、図3Aに示すインターポーザ基板4(ダイ)上に、ミリ波帯通信可能な半導体チップ30を形成する。半導体チップ30には、図2に示した送信および受信系を半導体集積回路に一体化したシステムLSIを使用する。送信系はLSI機能部201、パラレルシリアル変換回路34、変調回路35、周波数変換回路36、増幅器37、アンテナ切り替え部38を有し、受信系は増幅器44、周波数変換回路45、復調回路46およびシリアルパラレル変換回路47を有している。半導体チップ30は、従来から自明な製造方法によりインターポーザ基板4上に実装すればよい。
[ミリ波誘電体内伝送装置200の構成例]
この実施形態では、図4に示すように、誘電体伝送路付きのシャーシ11をミリ波誘電体内伝送可能な2つの半導体パッケージ20a,20bで挟み込んで積層したものである。
続いて、図5を参照して、ミリ波誘電体内伝送装置200の製造方法について説明する。この例で、図4に示したようなミリ波誘電体内伝送装置200を製造する場合、まず、半導体パッケージ20a,20bを形成する。半導体パッケージ20aは、一方のインターポーザ基板4上にミリ波帯通信可能な半導体チップ30を設ける。その後、半導体チップ30にアンテナ構造32を接続する。更に、インターポーザ基板4上の半導体チップ30とアンテナ構造32とにモールド樹脂8を覆って絶縁する。これにより、ミリ波誘電体内伝送可能な半導体パッケージ20aを形成することができる(図3参照)。
図6を参照して、ミリ波誘電体内伝送装置200の内部構成例について説明する。図6に示すミリ波誘電体内伝送装置200は、半導体パッケージ20a、誘電体伝送路21および半導体パッケージ20bを有して構成される。
図7を参照して、図4に示したミリ波誘電体内伝送装置200の拡大構成例について説明する。図7に示すミリ波誘電体内伝送装置200によれば、半導体パッケージ20a,20bの各々のアンテナ構造32には、アンテナ39としてパッチアンテナが使用される。半導体パッケージ20aにおいて、アンテナ39は、半導体チップ30上に積載されており、半導体チップ表面に形成されたアンテナ端子31と直接、あるいはボンディングワイヤを介して接続される。アンテナ39が半導体チップ30の表面に構成されているので、誘電体伝送路21と直接接触する構造を採ることができる。半導体パッケージ20bも半導体パッケージ20aと同様に構成されている。
図8を参照して、ミリ波誘電体内伝送装置200の通過特性および反射特性検証用のシミュレーションモデル例について説明する。図8に示すシミュレーションモデルは、図7に示したミリ波誘電体内伝送装置200の構成例を採っている。表1は、シミュレーションモデルに設定するパラメータをまとめたものである。
図9を参照して、ミリ波誘電体内伝送装置200のシミュレーション特性例について説明する。図9に示すシミュレーション特性例によれば、図8に示したミリ波誘電体内伝送装置200のシミュレーションモデルに与えられるアンテナ端子31間の通過特性例および反射特性例を示している。
tanδ4=0.01の粘弾性素材16aを通過する。そして、電磁波S’は誘電正接が tanδ3=0.01の誘電体素材21’の誘電体伝送路21へ伝送される。
tanδ4=0.01の粘弾性素材16aを通過する。そして、電磁波S’は誘電正接が tanδ3=0.01の誘電体素材21’の誘電体伝送路21へ伝送される。
[ミリ波誘電体内伝送装置300の構成例]
図10を参照して、第3の実施形態としてのミリ波誘電体内伝送装置300の構成例について説明する。この実施形態では、第2の実施形態で半導体パッケージ20a,20b間に設けられていたシャーシ11が省略され、誘電体伝送路21がモールド樹脂8および粘弾性素材16のみから構成されるものである。
[半導体パッケージ20cの構成例]
続いて、図11を参照しながら第4の実施形態としての半導体パッケージ20cの構成例について説明する。この例で、アンテナ構造32’がインターポーザ基板4の半導体チップ30に並設される。アンテナ構造32’を有する半導体パッケージ20cがパッケージ・オン・パッケージ構造(Package-On-Package:以下POP構造という)のミリ波誘電体内伝送装置400の構造を提供するようになる。
続いて、図12A~図12Dを参照しながらPOP構造のミリ波誘電体内伝送装置400を構成する半導体パッケージ20cの形成例について説明する。この例では、図11に示したような半導体パッケージ20cを形成する場合、まず、図12Aに示すインターポーザ基板4上にミリ波帯通信可能な半導体チップ30およびアンテナ構造32’を形成する。
図13を参照して、POP構造のミリ波誘電体内伝送装置400の構成例について説明する。図13に示すミリ波誘電体内伝送装置400は、図11に示した半導体パッケージ20cを2段以上積み重ねた構造とする。当該ミリ波誘電体内伝送装置400は、2個の半導体パッケージ20c,20d間を突起電極9で接続して、POP構造のミリ波誘電体内伝送装置400を構成するようにしたものである。換言すると、ミリ波誘電体内伝送装置400は、複数の半導体パッケージ20c,20dなどを実装用の基板10上に一体化したものである。半導体パッケージ20c,20dの内部構成例については図2を参照されたい。
続いて、図14を参照しながら、POP構造のミリ波誘電体内伝送装置400の組立例について説明する。この例では、図13に示した積層構造のミリ波誘電体内伝送装置400を組み立てる場合を前提とする。
[ミリ波誘電体内伝送装置500の構成例]
続いて、図15を参照しながら、第5の実施形態としてのミリ波誘電体内伝送装置500の構成例について説明する。第5の実施形態は、水平方向にズレて配置されている複数の半導体パッケージ20間のデータ転送をミリ波で行なう点に特徴がある。図示した例では、半導体チップ30を各々有する2つの半導体パッケージ20e,20fが同一の実装用の基板10に並設して実装され、領域画定用のシャーシ11内に形成された誘電体伝送路21を介して通信処理を実行できるようにした。半導体パッケージ20e,20fの内部構成例については図2を参照されたい。
続いて、図16~図18を参照して、ミリ波誘電体内伝送装置500の形成例について説明する。図16Aは、基板10における端子電極5の形成例を示す平面図であり、図16Bは、図16Aに示した基板10のX1-X1矢視断面図である。この例では、実装用の基板10と、シャーシ11と、2つの半導体パッケージ20e,20fとを用いて、図15に示したミリ波誘電体内伝送装置500を組み立てる場合を前提とする。
[ミリ波誘電体内伝送システム600の構成例]
続いて、図19Aおよび図19Bを参照して、第6の実施形態としてのミリ波誘電体内伝送システム600の構成例について説明する。図19Aに示すミリ波誘電体内伝送システム600は、2つの電子機器601,602の各々に、ミリ波誘電体内伝送可能な半導体パッケージ20gなどが実装される。当該システム600では、図19Bに示すように2つの電子機器601,602の所定部位を接触させてミリ波の信号Sを伝送するようになされる。
次に、図20Aおよび図20B、並びに図21Aおよび図21Bを参照して、ミリ波誘電体内伝送システム600に使用される電子機器601,602の製造方法について説明する。この実施形態では、何れ電子機器601,602に適用する場合も、半導体パッケージ20g,20hをそれらの筐体12aなどの内壁面側に実装する場合を例に挙げる。
図22~図28は、第7の実施形態としての半導体パッケージ20j(本例ではミリ波誘電体内伝送装置と等価)を説明する図である。ここで、図22は、第7の実施形態に対する比較例を説明する図である。図23は、第7の実施形態の半導体パッケージ20jの構成概要を説明する図である。図24は、第7の実施形態の半導体パッケージ20jで使用されるアンテナ構造の具体例を説明する図である。図25は、図24に示したアンテナ構造が適用された第7の実施形態の半導体パッケージ20jの具体例を説明する図である。図26~図28は、図25に示した第7の実施形態の半導体パッケージ20jにおけるシミュレーション特性例を示す図である。
図22には、第7の実施形態を適用しない比較例の半導体パッケージ1xが示されている。半導体パッケージ1xは、複数(図では3つ)のシステムLSIとしての半導体チップ2_1,2_2,2_3を1つのパッケージ内に並列に配置したマルチ・チップ・パッケージとなっている。半導体チップ2_1,2_2,2_3の表面には複数のパッド電極3が形成されている。
図23には、第7の実施形態の構成概要が示されている。図23Aは平面模式図であり、図23Bは断面模式図である。
図24~図28には、半導体パッケージ20jで使用されるアンテナ構造の具体例と特性例が示されている。
(グランドパターン39GP)の上層に6μm厚の酸化膜層39_M8 が形成されている。シリコン層30_M0 のシリコンSiは比誘電率が11.9で抵抗率が10Ω・cmであり、酸化膜層39_M8 の酸化膜は比誘電率が3.5で誘電正接 tanδが0.02である。
図29~図33は、第8の実施形態としてのミリ波誘電体内伝送システム600k(電子機器)を説明する図である。ここで、図29は、第8の実施形態に対する比較例を説明する図である。図30は、第8の実施形態のミリ波誘電体内伝送システム600kの構成概要を説明する図である。図31~図33は、図30に示した第8の実施形態のミリ波誘電体内伝送システム600kにおけるシミュレーション特性例を示す図である。
図29には、第8の実施形態を適用しない比較例の電子機器700xが示されている。構成としては、図39に示した電子機器700とほぼ同様であり、半導体パッケージ1x_1,1x_2を積層した状態である。つまり、マルチ・チップ・パッケージを2つ上下に配置した構成である。電子機器700xは、半導体パッケージ1x_1,1x_2内に複数(図では2つ)の半導体チップ2_1,2_2が搭載されている点が図39に示した電子機器700と異なる。
図30には、第8の実施形態のミリ波誘電体内伝送システム600k(電子機器)の構成概要が示されている。図30(A)は平面模式図であり、図30(B)は断面模式図である。図25に示した第7の実施形態の半導体パッケージ20jとの対比から分かるように、複数の第7の実施形態の半導体パッケージ20j_1,20j_2をパッケージ間距離hで積層した状態である。つまり、第7の実施形態を適用したマルチ・チップ・パッケージを2つ上下に配置した構成である。
以上、本発明について実施形態を用いて説明したが、本発明の技術的範囲は前記実施形態に記載の範囲には限定されない。発明の要旨を逸脱しない範囲で前記実施形態に多様な変更または改良を加えることができ、そのような変更または改良を加えた形態も本発明の技術的範囲に含まれる。
図34は、第1変形例の半導体パッケージ20p(本例ではミリ波誘電体内伝送装置と等価)を説明する図である。第1変形例は、1つの半導体パッケージ20p内において、基板上に複数の半導体チップ30が、アンテナ構造(アンテナ39)の部分が同軸となるように積層状態で配置され、各半導体チップ30間でミリ波伝送を行なう点に特徴がある。同一パッケージ内での半導体チップ30間でミリ波伝送を行なうものであり、半導体パッケージ20p自体がミリ波誘電体内伝送装置を構成することになる。
図35は、第2変形例の半導体パッケージ20q(本例ではミリ波誘電体内伝送装置と等価)を説明する図である。第2変形例は、第7の実施形態と同様の半導体パッケージ20qを、さらに第1変形例と同様に、実装用の基板10qに搭載している。基板10qも、ミリ波信号伝送可能な誘電体を含む誘電体素材で形成されているものとすることで、ミリ波信号を基板10q内で伝送させるミリ波基板内伝送方式を適用する。
図36は、第3変形例の半導体パッケージ20rとミリ波誘電体内伝送システム600rを説明する図である。第3変形例は、複数の半導体パッケージ20r間のデータ転送において、第1変形例や第2変形例で示したミリ波基板内伝送方式に自由空間伝送を併用する点に特徴がある。1つの半導体パッケージ20r内に搭載される半導体チップ30の数は不問である。
図37は、第4変形例のミリ波誘電体内伝送システム600sを説明する図である。第4変形例は、第5の実施形態と同様に、水平方向にズレて配置されている複数の半導体パッケージ20間のデータ転送をミリ波で行なう点に特徴がある。第5の実施形態との相違点は、各半導体パッケージ20異なる実装用の基板10_1,10_2に実装されている点である。ミリ波信号伝送路21sとしては、自由空間伝送路以外のものであればよく、たとえば、誘電体素材で形成された誘電体伝送路を適用するのがよい。誘電体伝送路は、たとえば、第5の実施形態のように、領域画定用のシャーシ11内に形成された誘電体伝送路でもよい。
Claims (28)
- 基板上に設けられたミリ波帯通信可能な半導体チップと、
前記半導体チップに接続されたアンテナ構造と、
前記半導体チップを覆う絶縁部材と、
ミリ波信号伝送可能な誘電体を含んでいる誘電体素材で構成され、前記アンテナ構造に整合されたミリ波伝送部材と、
を備える半導体装置。 - 前記ミリ波伝送部材は、
前記半導体チップに接続されたアンテナ構造に整合される貫通部を有した領域画定用の部材と、
前記部材の貫通部内に設けられた前記誘電体素材と、
を有する請求項1に記載の半導体装置。 - 前記半導体チップに接続されたアンテナ構造は、
前記半導体チップ上に設けられる
請求項2に記載の半導体装置。 - 前記半導体チップに接続されたアンテナ構造にはパッチアンテナが備えられる
請求項3に記載の半導体装置。 - 前記半導体チップは、
入力信号を信号処理してミリ波の信号を生成する第1の信号生成部と、
当該半導体チップと前記アンテナ構造とを結合する部分であって、前記第1の信号生成部によって生成された前記ミリ波の信号を前記ミリ波伝送部材に送信するとともに、当該ミリ波伝送部材から前記ミリ波の信号を受信する双方向の信号結合部と、
前記信号結合部によって受信した前記ミリ波の信号を信号処理して出力信号を生成する第2の信号生成部と、
を有する請求項4に記載の半導体装置。 - 前記第1の信号生成部には、パラレルの入力信号をシリアルの出力信号に変換する第1の信号変換部を有し、
前記第2の信号生成部には、シリアルの入力信号をパラレルの出力信号に変換する第2の信号変換部を有する
請求項5に記載の半導体装置。 - 前記アンテナ構造は、前記半導体チップに並設される
請求項2に記載の半導体装置。 - 一方の基板上に設けられたミリ波帯通信可能な半導体チップ、前記半導体チップに接続されたアンテナ構造、および、ミリ波信号を通過可能な誘電体を含み前記半導体チップを覆う絶縁部材を有したミリ波誘電体内伝送可能な第1の半導体装置と、
他方の基板上に設けられたミリ波帯通信可能な半導体チップ、前記半導体チップに接続されたアンテナ構造、および、ミリ波信号を通過可能な誘電体を含み前記半導体チップを覆う絶縁部材を有するミリ波誘電体内伝送可能な第2の半導体装置と、
ミリ波誘電体内伝送可能な誘電体を含んでいる誘電体素材で構成され前記第1の半導体装置と第2の半導体装置との間に設けられたミリ波伝送部材と、
を備え、
前記第1の半導体装置と第2の半導体装置とが当該第1の半導体装置のアンテナ構造と第2の半導体装置のアンテナ構造との間でミリ波信号伝送を実行可能に前記ミリ波伝送部材を介在して実装された
ミリ波誘電体内伝送装置。 - 前記ミリ波伝送部材は、
前記第1および第2の半導体装置の各々のアンテナ構造に整合される貫通部を有した領域画定用の部材と、
前記部材の貫通部内に設けられた誘電体素材と、
を有する請求項8に記載のミリ波誘電体内伝送装置。 - 前記アンテナ構造は、前記半導体チップ上に設けられ、
前記第1および第2の半導体装置は、各々の前記アンテナ構造が前記ミリ波伝送部材を介在して配置された
請求項9に記載のミリ波誘電体内伝送装置。 - 前記アンテナ構造にはパッチアンテナが備えられる
請求項10に記載のミリ波誘電体内伝送装置。 - 前記第1および第2の半導体装置とを接合する部分には、ミリ波誘電体内伝送可能な誘電体を含んだ誘電体素材で構成され、前記ミリ波伝送部材として機能する粘弾性素材が設けられている
請求項8に記載のミリ波誘電体内伝送装置。 - 前記アンテナ構造は、前記半導体チップに並設され、
前記第1および第2の半導体装置は、各々の前記アンテナ構造が前記ミリ波伝送部材を介在して配置された
請求項8に記載のミリ波誘電体内伝送装置。 - 前記半導体チップを各々有する第1および第2の半導体装置を並設して実装するための実装用の基板を更に備え、
前記ミリ波伝送部材が前記実装用の基板に設けられ、
前記実装用の基板のミリ波伝送部材において、前記第1の半導体装置のアンテナ構造と前記第2の半導体装置のアンテナ構造との間で、当該ミリ波伝送部材を介したミリ波の信号を伝送する
請求項8に記載のミリ波誘電体内伝送装置。 - 前記ミリ波伝送部材は、前記実装用の基板に設けられた領域画定用の溝部または貫通部にミリ波誘電体内伝送可能な誘電体を含んだ誘電体素材を充填して構成された
請求項14に記載のミリ波誘電体内伝送装置。 - 前記アンテナ構造は、前記半導体チップを封止する絶縁部材の表面に引き出される
請求項14に記載のミリ波誘電体内伝送装置。 - 前記絶縁部材は、ミリ波信号を通過可能な誘電体を含んでいる
請求項8~16の内の何れか一項に記載のミリ波誘電体内伝送装置。 - 基板上にミリ波帯通信可能な半導体チップを形成する工程と、
前記基板上に形成された半導体チップにアンテナ構造を接続する工程と、
絶縁部材で、前記半導体チップを覆って絶縁する工程と、
ミリ波信号伝送可能な誘電体を含んでいる誘電体素材で、前記アンテナ構造にミリ波伝送部材を整合する工程と、
を有する半導体装置の製造方法。 - 前記アンテナ構造にミリ波伝送部材を整合する際に、
前記絶縁部材に領域画定用の部材を形成する工程と、
前記領域画定用の部材に、前記アンテナ構造に整合される貫通部を形成する工程と、
前記部材の貫通部内に誘電体素材を設けてミリ波伝送部材を形成する工程と、
を有する請求項18に記載の半導体装置の製造方法。 - 一方の基板上にミリ波帯通信可能な半導体チップを設け、前記半導体チップにアンテナ構造を接続し、および、絶縁部材で前記半導体チップを覆ってミリ波誘電体内伝送可能な第1の半導体装置を形成する工程と、
他方の基板上にミリ波帯通信可能な半導体チップを設け、前記半導体チップにアンテナ構造を接続し、および、絶縁部材で前記半導体チップを覆ってミリ波誘電体内伝送可能な第2の半導体装置を形成する工程と、
ミリ波信号伝送可能な誘電体を含んでいる誘電体素材により、前記第1の半導体装置と第2の半導体装置との間にミリ波伝送部材を形成する工程と、
を有し、
前記ミリ波伝送部材を形成する際に、前記第1の半導体装置のアンテナ構造と前記第2の半導体装置のアンテナ構造との間でミリ波の信号が伝送可能となるように前記ミリ波伝送部材を介して当該第1および第2の半導体装置を実装する
ミリ波誘電体内伝送装置の製造方法。 - 一方の電子機器の基板上に設けられたミリ波帯通信可能な半導体チップ、前記半導体チップに接続されたアンテナ構造、および、前記電子機器の半導体チップを覆う絶縁部材を有したミリ波誘電体内伝送可能な第1の半導体装置と、
他方の電子機器の基板上に設けられたミリ波帯通信可能な半導体チップ、前記半導体チップに接続されたアンテナ構造、および、前記電子機器の半導体チップを覆う絶縁部材を有したミリ波誘電体内伝送可能な第2の半導体装置と、
ミリ波信号伝送可能な誘電体を含んでいる誘電体素材で構成され、前記第1の半導体装置と第2の半導体装置との間に設けられたミリ波伝送部材と、
を備え、
一方の前記電子機器と他方の前記電子機器とが前記ミリ波伝送部材を介して前記第1の半導体装置のアンテナ構造と前記第2の半導体装置のアンテナ構造との間でミリ波の信号が伝送可能となるように接触される
ミリ波誘電体内伝送システム。 - 基板上に設けられたミリ波帯通信可能な半導体チップと、
前記半導体チップに接続されたアンテナ構造と、
ミリ波信号伝送可能な誘電体を含んでいる誘電体素材で構成され、前記アンテナ構造に整合されたミリ波伝送部材と、
を備える半導体装置。 - ミリ波信号を伝送可能な特性を持つ誘電体素材で構成され、前記半導体チップを覆うとともに前記ミリ波伝送部材として機能する絶縁部材が設けられている
請求項22に記載の半導体装置。 - 複数の前記半導体チップが同一の基板上に並設されており、
前記絶縁部材は、前記複数の半導体チップの全体を覆うように設けられており、
前記絶縁部材は、前記複数の半導体チップ間でミリ波信号伝送を実行可能にする前記ミリ波伝送部材として機能する
請求項23に記載の半導体装置。 - 複数の前記半導体チップが前記アンテナ構造の部分が同軸となるように積層状に設けられており、
前記複数の半導体チップを接合する部分には、ミリ波誘電体内伝送可能な誘電体を含んだ誘電体素材で構成され前記ミリ波伝送部材として機能する粘弾性素材が設けられている 請求項22に記載の半導体装置。 - 請求項24または25の何れかに記載の複数の半導体装置と、
前記複数の半導体装置の間でミリ波帯での情報伝送が可能なミリ波信号伝送路と、
を備え、
前記複数の半導体装置の間では、ベースバンド信号をミリ波信号に変換してから、このミリ波信号を前記ミリ波信号伝送路を介して伝送するように構成されている
ミリ波誘電体内伝送装置。 - ミリ波信号伝送可能な誘電体を含んでいる誘電体素材で構成され前記ミリ波信号伝送路として機能する実装用の基板を備え、
前記複数の半導体装置が同一の前記実装用の基板上に並設されている
請求項26に記載のミリ波誘電体内伝送装置。 - 前記ミリ波信号伝送路は、ミリ波信号を伝送路中に閉じ込めつつミリ波信号を伝送させる構造を持つ
請求項26に記載のミリ波誘電体内伝送装置。
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US10199736B2 (en) | 2017-02-06 | 2019-02-05 | Kabushiki Kaisha Toshiba | Wireless device |
US10553954B2 (en) | 2017-02-06 | 2020-02-04 | Kabushiki Kaisha Toshiba | Wireless device |
CN113258305A (zh) * | 2021-04-30 | 2021-08-13 | 西南电子技术研究所(中国电子科技集团公司第十研究所) | 电控全息天线高频液晶辐射面子阵的制备方法 |
CN113258305B (zh) * | 2021-04-30 | 2022-07-29 | 西南电子技术研究所(中国电子科技集团公司第十研究所) | 电控全息天线高频液晶辐射面子阵的制备方法 |
WO2023276008A1 (ja) * | 2021-06-29 | 2023-01-05 | モレックス エルエルシー | 伝送システム |
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CN104201162B (zh) | 2018-01-19 |
JP2010183055A (ja) | 2010-08-19 |
CN102272919A (zh) | 2011-12-07 |
KR20110102384A (ko) | 2011-09-16 |
CN104201162A (zh) | 2014-12-10 |
RU2507631C2 (ru) | 2014-02-20 |
US20110309893A1 (en) | 2011-12-22 |
US9705202B2 (en) | 2017-07-11 |
EP2375444A1 (en) | 2011-10-12 |
RU2011126997A (ru) | 2013-01-10 |
US20150137336A1 (en) | 2015-05-21 |
TWI436468B (zh) | 2014-05-01 |
EP2375444A4 (en) | 2013-10-02 |
US8983399B2 (en) | 2015-03-17 |
JP5556072B2 (ja) | 2014-07-23 |
CN102272919B (zh) | 2014-08-20 |
BRPI0923803A2 (pt) | 2015-07-21 |
TW201030929A (en) | 2010-08-16 |
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