WO2010041376A1 - インターポーザ基板及び半導体装置 - Google Patents
インターポーザ基板及び半導体装置 Download PDFInfo
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- WO2010041376A1 WO2010041376A1 PCT/JP2009/004455 JP2009004455W WO2010041376A1 WO 2010041376 A1 WO2010041376 A1 WO 2010041376A1 JP 2009004455 W JP2009004455 W JP 2009004455W WO 2010041376 A1 WO2010041376 A1 WO 2010041376A1
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- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
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Definitions
- the present invention relates to a semiconductor device including an interposer substrate and a semiconductor element mounted on the interposer substrate, and the interposer substrate.
- semiconductor devices have come to be housed in multi-terminal packages such as BGA (Ball Grid Array) or CSP (Chip Size Package).
- a semiconductor device generally also referred to as a semiconductor package
- a semiconductor element is mounted on an interposer substrate (generally also referred to as an interposer), and further, the interposer substrate is a mother substrate (generally referred to as an interposer). Is also referred to as a motherboard.).
- FIG. 19 is a plan view of a conventional interposer substrate 104P on which the semiconductor element 102 is mounted.
- the semiconductor element 102 includes a plurality of terminals 121.
- a plurality of connection terminals 141 are formed on the surface of the interposer substrate 104P.
- Each terminal 121 of the semiconductor element 102 and each connection terminal 141 of the interposer substrate 104P are formed.
- each terminal 121 and each connection terminal 141 are connected by wire bonding, but may be connected using bumps.
- connection wiring conductor 142 is formed on the surface of the interposer substrate 104P.
- One end of each connection wiring conductor 142 is connected to one connection terminal 141, and the other end is connected to one end of one of the via conductors 144 formed on the interposer substrate 104 ⁇ / b> P.
- the other end of each via conductor 144 is electrically connected to the wiring formed on the back surface or inside of the interposer substrate 104P.
- the wiring formed on the back surface or inside of the interposer substrate 104P is electrically connected to the electrode pads of the mother substrate via solder balls or the like.
- each connection terminal 141 on the interposer substrate 104P is subjected to precious metal plating (for example, gold plating) using electrolytic plating.
- precious metal plating for example, gold plating
- each connection terminal 141 is energized from the outer edge of the interposer substrate 104P through the wiring formed on the interposer substrate 104P.
- a part of the wiring used for energization is used as a connection wiring conductor 142 for connecting each connection terminal 141 and each via conductor 144, and the remaining part is the outer edge portion of each interposer substrate 104P from each via conductor 144.
- plating stub conductor 145 (plating stub conductor, which is also generally referred to as a plating wire). That is, one end of each plating stub conductor 145 is connected to the via conductor 144, and the other end is an open end, and an open end is formed at the outer edge of the interposer substrate 104P.
- the plating stub conductor 145 on the interposer substrate 104P adversely affects the waveform of the transmission signal transmitted through the connection wiring conductor 142.
- Patent Document 1 proposes eliminating the remaining plating stub conductor.
- Patent Document 2 in order to solve the same problem, it is proposed to connect a plating stub conductor to a termination resistor.
- the semiconductor element 102 has been miniaturized and multi-terminals are being advanced. For this reason, the plurality of terminals 121 formed in the semiconductor element 102 in FIG.
- the connection terminals 141 on the interposer substrate 104P are provided at a relatively small pitch corresponding to the terminals 121.
- the connection wiring conductor 142 is formed such that the distance between the connection wiring conductors 142 increases as the distance from the connection terminal 141 increases.
- the outer diameter of each via conductor 144 connected to the other end of each connection wiring conductor 142 is larger than the width of each connection wiring conductor 142.
- the positions of the via conductors 144 connected to the adjacent connection wiring conductors 142 are shifted so that the distances from the outer edge portions of the interposer substrate 104P are different from each other. .
- connection wiring conductors 142 are different from each other, and the electrical resistances of the connection wiring conductors 142 are also different from each other. Accordingly, the transmission times of a plurality of transmission signals transmitted and received between the semiconductor element 102 and the mother substrate via the interposer substrate 104P are different from each other.
- FIG. 20 is a timing chart showing the transmission signal P output from the terminal 121A of the semiconductor element 102 of FIG. 19 and the transmission signal N output from the terminal 121B.
- transmission signals P and N have a period T and constitute a pair of differential signals.
- data of “1” or “0” is transmitted using a potential difference (PN) between transmission signals P and N having a phase difference of 180 degrees from each other.
- PN potential difference
- FIG. 20 when data D1 and D3 having data value “0” are transmitted, the potential difference (PN) is set to a negative value, and data D2 and D4 having data value “1” are transmitted.
- the potential difference (PN) is set to a positive value.
- the transmission signal P is output from the terminal 121A of the semiconductor element 102 to the electrode pad of the mother board via the wire 151A, the connection wiring conductor 142A, and the via conductor 144A.
- the transmission signal N is output from the terminal 121B of the semiconductor element 102 to another electrode pad of the mother board via the wire 151B, the connection wiring conductor 142B, and the via conductor 144B.
- FIG. 21 is a timing chart showing reception signals P1 and N1 when the transmission signal of FIG. 20 is received by a pair of electrode pads on the mother board.
- phase difference A1 is generated between the reception signals P1 and N1, as shown in FIG.
- the magnitude of the phase difference A1 is sufficiently smaller than the period T of the differential signal, the data D1 to D4 can be transmitted accurately, but the magnitude of the phase difference A1 is ignored with respect to the period T of the differential signal. If it becomes too large, the data D1 to D4 cannot be transmitted accurately.
- the smaller the period T of the differential signal the greater the influence of the phase difference A1, which causes a problem that data cannot be differentially transmitted accurately.
- An object of the present invention is to solve the above-described problems and provide a semiconductor device and its interposer substrate that can transmit a high-frequency signal with higher precision than in the prior art.
- An interposer substrate includes a semiconductor element mounted on a surface of an interposer substrate and having a plurality of terminals, and an interposer substrate having a ground conductor provided between a mother substrate having a plurality of electrode pads.
- An interposer substrate for a semiconductor device provided with a plurality of signals between a plurality of terminals of the semiconductor element and a plurality of electrode pads of the mother substrate via a plurality of signal lines formed on the interposer substrate.
- Each of the signal lines is formed on the surface of the interposer substrate and has a connection wiring conductor having one end electrically connected to one of the plurality of terminals of the semiconductor element; and A via conductor having one end connected to the other end and the other end electrically connected to one of the plurality of electrode pads of the mother substrate; A strip conductor formed on the surface of the interposer substrate and having one end connected to one end of the via conductor and the other end being an open end; and each of the strip conductor and the ground conductor is at least one of the above
- the strip conductor and the ground conductor are formed so as to face each other to form at least one capacitor, and the capacitance value of each capacitor is such that the phase of each signal transmitted through each signal line is equal to each signal line. It is characterized in that they are adjusted so as to have a predetermined relationship with each other.
- At least one of the strip conductors has a meandering shape.
- the meandering shape is a shape obtained by bending a straight line.
- the width of at least one of the strip conductors is larger than the width of the other strip conductors.
- At least one of the signal lines is formed on the surface of the interposer substrate so as to face the ground conductor, and connected to one end of the via conductor, and an open end. And at least one other strip conductor having the other end.
- At least one of the strip conductors has a branched shape.
- the grounding conductor forms the capacitors so as to face at least a part of the strip conductors.
- the ground conductor is formed on the surface of the interposer substrate.
- the plurality of signal lines include a first signal line and a second signal line for transmitting a pair of differential signals, and the strip conductor of the first signal line and the ground conductor
- the capacitance value of the first capacitor formed and the capacitance value of the second capacitor formed by the strip conductor of the second signal line and the ground conductor are the same as the first and second signal lines.
- a phase difference between the pair of differential signals is generated at a pair of terminals of the connected semiconductor elements or at a pair of electrode pads of the mother substrate connected to the first and second signal lines. It is characterized by being adjusted to be substantially 180 degrees.
- only the strip conductor of one of the first and second signal lines forms the capacitor with the ground conductor.
- the plurality of signal lines include a third signal line and a fourth signal line for transmitting a pair of transmission signals, and are formed by the strip conductor of the second signal line and the ground conductor.
- the capacitance value of the third capacitor formed and the capacitance value of the fourth capacitor formed by the strip conductor of the fourth signal line and the ground conductor are connected to the third and fourth signal lines.
- each of the connection wiring conductors and each of the strip conductors is formed on the surface of the interposer substrate by plating.
- a semiconductor device includes the interposer substrate and the semiconductor element mounted on the interposer substrate.
- the semiconductor device further includes a plurality of solder balls formed on the back surface of the interposer substrate and electrically connecting the other end of each via conductor and each electrode pad of the external substrate. To do.
- the interposer substrate and the semiconductor device including the interposer substrate via the plurality of signal lines formed on the interposer substrate.
- a plurality of signals, and each signal line is formed on the surface of the interposer substrate and has one end electrically connected to one of the plurality of terminals of the semiconductor element A via conductor having a conductor, one end connected to the other end of the connection wiring conductor, and the other end electrically connected to one of the plurality of electrode pads of the mother substrate; and
- a strip conductor formed on a surface and having one end connected to one end of the via conductor and the other end being an open end, and each strip conductor and the ground conductor.
- each capacitor is formed such that at least one strip conductor and the ground conductor face each other to form at least one capacitor, and the capacitance value of each capacitor is the value of each signal transmitted through each signal line. Since the phase is adjusted to have a predetermined relationship with each other at one end of each of the signal lines, a high-frequency signal can be transmitted with higher accuracy than in the prior art.
- FIG. 3 is a cross-sectional view of the semiconductor device 100 according to the first embodiment of the present invention (cross-sectional view taken along line AB in FIG. 2). It is a top view of the interposer substrate 104 of FIG.
- FIG. 3 is an equivalent circuit diagram of a signal line including a connection wiring conductor 142B of FIG.
- FIG. 3 is an enlarged view including plated stub conductors 145A and 145B of the interposer substrate 104 of FIG. 2.
- FIG. 1 When a pair of transmission signals is transmitted from the semiconductor element 102 of FIG. 1 to the mother board 300 via the third signal line including the connection wiring conductor 142A and the fourth signal line including the connection wiring conductor 142B, the terminals 12 is a timing chart showing transmission signals Pt1 and Nt1 output from 121A and 121B, respectively.
- FIG. 8 is a timing chart showing reception signals Pr1 and Nr1 when transmission signals Pt1 and Rt1 in FIG. 7 are received by a pair of electrode pads 310 of the mother board 300.
- FIG. FIG. 10 is an enlarged view including plated stub conductors 145A and 145B-1 of an interposer substrate 104A according to a second embodiment of the present invention.
- FIG. 9 is an enlarged view including plated stub conductors 145A and 145B-1 and a ground conductor 162A of an interposer substrate 104B according to a third embodiment of the present invention.
- FIG. 10 is an enlarged view including plated stub conductors 145A-1 and 145B-2 of an interposer substrate 104C according to a fourth embodiment of the present invention.
- plating stub conductors 145A and 145B-2 and strip conductors 145A-2 of an interposer substrate 104D according to a fifth embodiment of the present invention. It is an enlarged view including the plating stub conductors 145A and 145B-2, the strip conductor 145A-2, and the ground conductor 162B of the interposer substrate 104E according to the sixth embodiment of the present invention. It is an enlarged view including the plating stub conductors 145A-3 and 145B of the interposer substrate 104F according to the seventh embodiment of the present invention.
- FIG. 20 is a timing chart showing a transmission signal P output from a terminal 121A and a transmission signal N output from a terminal 121B of the semiconductor element 102 of FIG.
- FIG. 21 is a timing chart showing reception signals P1 and N1 when the transmission signal of FIG. 20 is received by a pair of electrode pads on the mother board.
- FIG. 1 is a cross-sectional view (cross-sectional view taken along line AB in FIG. 2) of the semiconductor device 100 according to the first embodiment of the present invention
- FIG. 2 is a plan view of the interposer substrate 104 in FIG. 4 is an enlarged view including the plated stub conductors 145A and 145B of the interposer substrate 104 of FIG.
- FIG. 3 is an equivalent circuit diagram of a signal line including the connection wiring conductor 142B of FIG.
- description of the connection wiring conductor 142 other than the connection wiring conductors 142A and 142B and the components connected to the connection wiring conductor 142 are omitted.
- the interposer substrate 104 is provided between the semiconductor element 102 mounted on the surface of the interposer substrate 104 and having a plurality of terminals 121 and a mother substrate 300 having a plurality of electrode pads 310, and a ground conductor 162.
- a plurality of signals are transmitted between 121 and the plurality of electrode pads 310 of the mother substrate 300.
- each signal line is (a) a connection wiring conductor 142 formed on the surface of the interposer substrate 104 and having one end electrically connected to one of the plurality of terminals 121 of the semiconductor element 102; (B) a via conductor 144 having one end connected to the other end of the connection wiring conductor 142 and the other end electrically connected to one of the plurality of electrode pads 310 of the mother substrate 300; ) A plating stub conductor 145 which is a strip conductor formed on the surface of the interposer substrate 104 and having one end connected to one end of the via conductor 144 and the other end being an open end.
- each plated stub conductor 145 and ground conductor 162 are formed such that at least one plated stub conductor 145 and ground conductor 162 face each other to form at least one capacitor 160A, 160B.
- the capacitance values Ca and Cb are characterized in that the phase of each signal transmitted through each signal line is adjusted so as to have a predetermined relationship with each other at one end of each signal line.
- a semiconductor device 100 includes a semiconductor element 102 and an interposer substrate 104 on which the semiconductor element 102 is mounted, and a mother substrate using a plurality of solder balls 210 including solder balls 210G. 300.
- the semiconductor element 102 is an IC chip in which an LSI for processing a high-frequency digital signal having a frequency of about 2 GHz such as a digital television broadcast signal at a processing speed of 1 Gbps to 5 Gbps is incorporated.
- the semiconductor element 102 has a plurality of terminals 121 for inputting and outputting high-frequency digital signals.
- the interposer substrate 104 is provided to electrically connect each terminal 121 of the semiconductor element 102 to each electrode pad 310 of the mother substrate 300.
- the interposer substrate 104 has a size of 2 cm ⁇ 2 cm ⁇ 100 ⁇ m.
- the interposer substrate 104 includes a plurality of connection terminals 141, a plurality of connection wiring conductors 142, a plurality of plating stub conductors 145 that are strip conductors formed on the surface of an insulating layer 164 made of a dielectric, and an insulating layer 164.
- a plurality of via conductors 144 formed, a plurality of electrode pads 171 formed on the back surface of the insulating layer 164, and a ground conductor 162 formed in the insulating layer 164 are configured.
- the ground conductor 162 includes one via conductor 144G of the plurality of via conductors 144, one electrode pad 171G of the plurality of electrode pads 171, and solder balls 171G.
- the electrode pad 310G of the mother substrate 300 is connected to the ground wiring 330 of the mother substrate 300.
- connection terminals 141 are provided corresponding to the plurality of terminals 121 of the semiconductor element 102, respectively, and are wire-bonded to the terminals 121 using the wires 151.
- One end of each connection wiring conductor 142 is connected to the connection terminal 141, and the other end is connected to one end of the via conductor 144.
- the connection wiring conductor 142 is formed such that the distance between the connection wiring conductors 142 increases as the distance from the connection terminal 141 increases.
- the via conductor 144 is an interlayer connection portion, and the other end of the via conductor 144 is electrically connected to an electrode pad 171 formed on the back surface of the interposer substrate 104. In FIG.
- each via conductor 144 is larger than the width of each connection wiring conductor 142. Further, in order to make the interposer substrate 104 smaller, the positions of the via conductors 144 connected to the adjacent connection wiring conductors 142 are shifted so that the distances from the outer edge portions of the interposer substrate 104 are different from each other. Furthermore, solder balls 210 are formed on the electrode pads 171. The interposer substrate 104 is electrically connected to the electrode pads 310 of the mother substrate 300 and the signal wirings 320 formed on the mother substrate 300 via solder balls 210.
- connection terminal 141 on the interposer substrate 104 is subjected to precious metal plating (for example, gold plating) using electrolytic plating. During this noble metal plating process, each connection terminal 141 is energized from the outer edge of the interposer substrate 104 through the plating stub conductor 145 and the connection wiring conductor 142 formed on the interposer substrate 104. One end of the plating stub conductor 145 is connected to the connection wiring conductor 142 via the via conductor 14, and the other end is an open end, and an open end is formed at the outer edge of the interposer substrate 104. The plated stub conductor 145 remains with the other end open after the energization. Each connection wiring conductor 142 and each plating stub conductor 145 are formed on the surface of the interposer substrate 104 by plating.
- precious metal plating for example, gold plating
- each set of the connection wiring conductor 142, the via conductor 144, and the plating stub conductor 145 electrically connected to each other is between the terminal 121 of the semiconductor element 102 and the electrode pad 310 of the mother substrate 300.
- a signal line for transmitting and receiving a high-frequency digital signal is configured.
- 1 is a high-frequency digital signal using a pair of signal lines (first and second signal lines) each including two connection wiring conductors 142A and 142B of the plurality of connection wiring conductors 142.
- first and second signal lines each including two connection wiring conductors 142A and 142B of the plurality of connection wiring conductors 142.
- An operation in the case of differentially transmitting a pair of differential signals will be described.
- one end of the connection wiring conductor 142A is connected to one connection terminal 141A of the plurality of connection terminals 141, and the other end is connected to one end of one via conductor 144A of the plurality of via conductors 144. It is connected.
- connection terminal 141 ⁇ / b> A is connected to one terminal 121 ⁇ / b> A among the plurality of terminals 121 of the semiconductor element 102 using one wire 141 ⁇ / b> A of the plurality of wires 151.
- the other end of the via conductor 144A is connected to the solder ball 171 through one electrode pad 171.
- connection wiring conductor 142A one end of the connection wiring conductor 142B is connected to one connection terminal 141B of the plurality of connection terminals 141, and the other end is one end of one via conductor 144B of the plurality of via conductors 144. It is connected to the.
- connection terminal 141 ⁇ / b> B is connected to one terminal 121 ⁇ / b> B of the plurality of terminals 121 of the semiconductor element 102 using one wire 141 ⁇ / b> B of the plurality of wires 151.
- the other end of the via conductor 144B is connected to the solder ball 171 through one electrode pad 171.
- the terminals 121A and 121B constitute a differential pair terminal.
- the plating stub conductor 145A is formed to have a straight shape having the same width as the connection wiring conductor 142A.
- the plated stub conductor 145A and the ground conductor 162 face each other across the insulating layer 164 to form a capacitor 160A having a capacitance value Ca.
- the plated stub conductor 145B is formed to have a meandering shape (meander shape) having the same width as that of the connection wiring conductor 142B.
- the plated stub conductor 145B and the ground conductor 162 face each other across the insulating layer 164 to form a capacitor 160B having a capacitance value Cb.
- connection wiring conductor 142B behaves as an inductor connected between the connection terminal 141B and the via conductor 144B and having an inductance L1.
- electrode pad 171, the solder ball 210, and the electrode pad 310 behave as an inductor having an inductance L2 connected to the via conductor 144B.
- the plated stub conductor 145B behaves as an open stub conductor when transmitting a high-frequency digital signal.
- the plated stub conductor 145B and the ground conductor 162 face each other to form a capacitor 160B having a capacitance value Cb, and the capacitor 160B delays a high-frequency digital signal transmitted / received via the connection wiring conductor 142B according to the capacitance value Cb.
- the capacitance value Cb increases as the area of the portion of the plated stub conductor 145B facing the ground conductor 162 increases, and this area is the length of the plated stub conductor 145B in the longitudinal direction (that is, the meandering shape). ).
- the plated stub conductor 145A and the ground conductor 162 face each other to form a capacitor 160A having a capacitance value Ca, and the capacitor 160A transmits a signal transmitted and received via the connection wiring conductor 142A according to the capacitance value Ca.
- the capacitance value Ca increases as the area of the portion of the plated stub conductor 145A facing the ground conductor 162 increases.
- a pair of differential signals is transmitted from the semiconductor element 102 to the mother board 300 via the first signal line including the connection wiring conductor 142A and the second signal line including the connection wiring conductor 142B.
- the capacitance value Cb of the capacitor 160B is such that the phase difference between the pair of differential signals is substantially 180 degrees in the pair of electrode pads 310 of the mother substrate 300 connected to the via conductors 144A and 144B, respectively. It is adjusted to become.
- the capacitance value Cb of the capacitor 160 ⁇ / b> B is equal to the pair of differential signals at the pair of terminals 121 ⁇ / b> A and 121 ⁇ / b> B of the semiconductor element 102.
- the phase difference between them is adjusted to be substantially 180 degrees.
- a pair of differential signals is transmitted from the semiconductor element 102 of FIG. 1 to the mother board 300 via the first signal line including the connection wiring conductor 142A and the second signal line including the connection wiring conductor 142B.
- 6 is a timing chart showing transmission signals Pt and Nt output from terminals 121A and 121B, respectively.
- FIG. 6 is a timing chart showing the reception signals Pr and Nr when the transmission signals Pt and Rt of FIG. 5 are received by the pair of electrode pads 310 of the mother board 300.
- transmission signals Pt and Nt have a period T and constitute a pair of differential signals.
- differential transmission as shown in FIG.
- data of “1” or “0” is transmitted using a potential difference (PN) between transmission signals Pt and Nt having a phase difference of 180 degrees from each other.
- PN potential difference
- FIG. 5 when data D1 and D3 having data value “0” are transmitted, the potential difference (PN) is set to a negative value, and data D2 and D4 having data value “1” are transmitted.
- the potential difference (PN) is set to a positive value.
- the phase difference between the reception signals Pr and Nr when the transmission signals Pt and Rt of FIG. 5 are received by the pair of electrode pads 310 of the mother board 300 is substantially equal. Therefore, the data D1 to D4 can be transmitted more accurately than in the prior art.
- 1 is a high-frequency digital signal using a pair of signal lines (third and fourth signal lines) each including two connection wiring conductors 142A and 142B of the plurality of connection wiring conductors 142.
- the operation when a pair of transmission signals is transmitted in a single end will be described.
- the capacitance value Cb of the capacitor 160B is such that the phase difference between the pair of differential signals is substantially 0 degree in the pair of electrode pads 310 of the mother substrate 300 connected to the via conductors 144A and 144B, respectively. To be adjusted.
- the capacitance value Cb of the capacitor 160B is between the pair of differential signals at the pair of terminals 121A and 121B of the semiconductor element 102.
- the phase difference is adjusted to be substantially 0 degree.
- FIG. 7 a pair of transmission signals is transmitted from the semiconductor element 102 of FIG. 1 to the mother substrate 300 via the third signal line including the connection wiring conductor 142A and the fourth signal line including the connection wiring conductor 142B.
- FIG. 4 is a timing chart showing transmission signals Pt1 and Nt1 output from terminals 121A and 121B, respectively.
- FIG. 8 is a timing chart showing the reception signals Pr1 and Nr1 when the transmission signals Pt1 and Rt1 of FIG. 7 are received by the pair of electrode pads 310 of the mother board 300.
- transmission signals Pt1 and Nt1 have a period T and constitute a pair of transmission signals having the same phase. Further, as shown in FIG.
- the phase difference between the reception signals Pr1 and Nr1 when the transmission signals Pt1 and Rt1 of FIG. 7 are received by the pair of electrode pads 310 of the mother board 300 is substantial. Therefore, the processing accuracy when processing the received signals Pr1 and Nr1 in the mother board 300 in relation to each other can be improved as compared with the prior art.
- the inventors calculated the difference in transmission time between differential signals received by simulation based on design CAD data of the mother substrate 300 and the semiconductor device 100, the following results were obtained.
- a microstrip wiring with a wiring width of 50 ⁇ m is formed on a glass epoxy substrate with a thickness of 100 ⁇ m and a high-frequency differential signal of 2 GHz is transmitted, if the difference in transmission path length is 2 mm, the difference in transmission time was about 0.75 picoseconds.
- the phase difference between the differential signals is shifted from 180 degrees by about 10%.
- the amount of deviation from 180 degrees in phase difference becomes so large that it cannot be ignored with respect to the period of the differential signal, and there is a problem that data cannot be accurately differentially transmitted. It was.
- the lengths of the signal wirings 142A and 142B are made uniform.
- changing the design of the connection wiring conductor 142 also affects the design of other wirings.
- the semiconductor element 102 is configured by a system LSI or the like, and is highly complicated, and the number of terminals 120 tends to increase as compared to the conventional one (multiple terminals).
- the length of each connection wiring conductor 142 and the degree of freedom of the position of the via conductor 144 are very small. For this reason, it is actually very difficult to design the length of each connection wiring conductor 142 and the position of the via conductor 144 so that the transmission path length of each signal transmitted through the connection wiring conductor 142 is made uniform.
- the interposer substrate 104 according to the present embodiment is different from the interposer substrate 104P according to the prior art shown in FIG. 19 in that the plated stub conductor 145P having the same width as the connection wiring conductor 142B has a meander shape.
- the capacitor 160B is formed by the ground conductor 162 and the plated stub conductor 145B. Further, the capacitance value Cb of the capacitor 160B is received at the pair of terminals 121A and 121B of the semiconductor element 102 or at the pair of electrode pads 310 of the mother substrate 300 connected to the via conductors 144A and 144B, respectively.
- the phase difference between the pair of differential signals is adjusted to be substantially 180 degrees.
- the plated stub conductors 145 including the plated stub conductors 145A and 145B do not directly contribute to signal transmission between the semiconductor element 102 and the mother board 300.
- the wiring density is smaller in the vicinity of the outer edge of the interposer substrate 104 where the plated stub conductor 145 formed outside the via conductor 144 remains compared to the vicinity of the semiconductor element 102. Therefore, the degree of freedom in design is great.
- a ground conductor 162 connected to the ground wiring 330 of the mother substrate 300 is provided as a component for setting a reference value of potential inside the interposer substrate 104.
- forming the capacitor 160A between the ground conductor 162 and the plated stub conductor 145A and forming the capacitor 160B between the ground conductor 162 and the plated stub conductor 145B is a conventional interposer.
- the influence on the design of other wirings on the substrate 104P is relatively small. Therefore, the phase of the signal input / output to / from the semiconductor device 100A can be adjusted relatively easily as compared with other methods such as making the lengths of the connection wiring conductors 142 uniform.
- the plating stub conductor 145 is formed by a noble metal plating process, the length or area thereof can be adjusted relatively easily.
- a high-frequency digital signal can be transmitted with higher accuracy than the conventional technique without affecting the design of the wiring such as the connection wiring conductor 142 of the interposer substrate 104P according to the conventional technique.
- the width of the plating stub conductor 145B is the same as the width of the connection wiring conductor 142B, and the characteristic impedance of the plating stub conductor 145B and the characteristic impedance of the connection wiring conductor 142B are the same. Thereby, the etching rate does not change between the plating stub conductor 145B and the connection wiring conductor 142B during the noble metal plating process.
- the plated stub conductor 145A may be formed in a meander shape similarly to the plated stub conductor 145B.
- FIG. 9 is an enlarged view including the plated stub conductors 145A and 145B-1 of the interposer substrate 104A according to the second embodiment of the present invention.
- the present embodiment is characterized in that a plated stub conductor 145B-1 having a bent shape is formed instead of the plated stub conductor 145B having a meander shape.
- a plated stub conductor 145B-1 and a ground conductor 162 face each other with an insulating layer 164 interposed therebetween to form a capacitor 160B-1.
- the space on the surface of the interposer substrate 104A can be used efficiently, and the plated stub conductor 145B- longer than the plated stub conductor 145B- 1 can be formed. Therefore, as compared with the first embodiment, the capacitance value of the capacitor 160B-1 can be increased, and the delay amount of the signal transmitted through the connection wiring conductor 142B can be increased.
- the plated stub conductor 145A may be formed in a shape in which a straight line is bent in the same manner as the plated stub conductor 145B-1.
- FIG. 10 is an enlarged view including the plated stub conductors 145A and 145B-1 and the ground conductor 162A of the interposer substrate 104B according to the third embodiment of the present invention.
- This embodiment is characterized in that a comb-shaped ground conductor 162A is formed on the surface of the interposer substrate 104B as compared with the second embodiment.
- a plated stub conductor 145B-1 and a ground conductor 162A face each other to form a capacitor 160B-2.
- the capacitance value of the capacitor 160B-2 can be increased, and the delay amount of the signal transmitted through the connection wiring conductor 142B can be increased. .
- FIG. 11 is an enlarged view including the plated stub conductors 145A-1 and 145B-2 of the interposer substrate 104C according to the fourth embodiment of the present invention.
- This embodiment differs from the first embodiment in the following points.
- a plating stub conductor 145B-2 having a linear shape with the same width Wsb as the width Wb of the connection wiring conductor 142B is formed.
- the plated stub conductor 145A-1 and the ground conductor 162 face each other across the insulating layer 164 to form a capacitor 160A-1, and the plated stub conductor 145B-2 and the ground conductor 162 form the insulating layer 164.
- a capacitor 160B-3 is formed so as to be opposed to each other.
- At least one of the plated stub conductors 145A-1 and 145B-2 may have a meander shape or a shape obtained by bending a straight line.
- FIG. 12 is an enlarged view including the plated stub conductors 145A and 145B-2 and the strip conductor 145A-2 of the interposer substrate 104D according to the fifth embodiment of the present invention.
- this embodiment has one end and an open end connected to the plating stub conductor 145A and the via conductor 144A of the first embodiment instead of the plating stub conductor 145A-1.
- a strip conductor 145A-2 having the other end is formed.
- the plated stub conductors 145A and 145A-2 are opposed to the ground conductor 162.
- the strip conductor 145A-2 behaves as an open stub conductor, and the plated stub conductor 145A, the strip conductor 145A-2, and the ground conductor 162 face each other to form a capacitor 160A-2.
- the strip conductor 145A-2 is further connected to the via conductor 144A, thereby increasing the area of the open stub conductor connected to the connection wiring conductor 142A via the via conductor 144A.
- the capacity value of can be increased.
- the delay amount of the signal transmitted via the connection wiring conductor 142A can be increased.
- one strip conductor 145A-2 is connected to the via conductor 144A.
- the present invention is not limited to this, and a plurality of strip conductors having one end connected to the via conductor 144A and the other end being an open end are provided.
- a strip conductor may be formed.
- at least one strip conductor having one end connected to the via conductor 144B and the other end being an open end may be formed.
- the plated stub conductors 145A, 145B-2 and the strip conductor 145-2 may have a meander shape or a shape obtained by bending a straight line. The widths of the plated stub conductors 145A and 145B-2 and the strip conductor 145-2 may be different from each other.
- FIG. 13 is an enlarged view including the plated stub conductors 145A and 145B-2, the strip conductor 145A-2, and the ground conductor 162B of the interposer substrate 104E according to the sixth embodiment of the present invention.
- the present embodiment is characterized in that a rectangular ground conductor 162B is formed between the plating stub conductor 145A and the strip conductor 145A-2 on the surface of the interposer substrate 104E as compared with the fifth embodiment.
- the plated stub conductor 145A and strip conductor 145A-2 and the ground conductor 162B face each other to form a capacitor 160A-3.
- the capacitance value of the capacitor 160A-3 can be increased, and the delay amount of the signal transmitted through the connection wiring conductor 142A can be increased.
- FIG. 14 is an enlarged view including the plated stub conductors 145A-3 and 145B of the interposer substrate 104F according to the seventh embodiment of the present invention.
- the present embodiment is characterized in that a plated stub conductor 145A-3 having a branched shape is formed in place of the plated stub conductor 145A-1 as compared with the fourth embodiment.
- a plated stub conductor 145A-3 and a ground conductor 162 face each other to form a capacitor 160A-4.
- the plated stub conductor 145A-3 By forming the plated stub conductor 145A-3 in a branched shape, the area of the plated stub conductor 145A-3 is increased, and the capacitance value of the capacitor 160A-4 is increased, and transmitted through the connection wiring conductor 142A. The amount of signal delay can be increased.
- the plated stub conductor 145B-2 may be formed in a branched shape, a meander shape, or a shape obtained by bending a straight line. Further, the widths of the plated stub conductors 145A-3 and 145B-2 may be different from each other. Further, the strip conductor 145A-2 of FIG. 12 may be connected to the via conductor 144A. Further, a strip conductor having one end connected to the via conductor 144B and the other end being an open end facing the ground conductor 162 may be further formed on the surface of the interposer substrate 104F.
- FIG. 15 is an enlarged view including the plated stub conductors 145A and 145B-2 and the ground conductor 162 having the notch 162h of the interposer substrate 104G according to the eighth embodiment of the present invention.
- the present embodiment forms the plated stub conductor 145B-2 of the fourth embodiment instead of the plated stub conductor 145B, and among the ground conductors 162, the plated stub conductor 145B-2. It is characterized in that a notch 162h is provided in a part of the portion facing the.
- the plated stub conductor 145B-2 and the portion of the ground conductor 162 that faces the plated stub conductor 145B-2 form a capacitor 160B-4 with the insulating layer 164 interposed therebetween.
- the capacitance value of the capacitor 160B-4 can be reduced, and the delay amount of the signal transmitted via the connection wiring conductor 142A can be reduced.
- the notch 162h may be formed in the entire portion of the ground conductor 162 facing the plated stub conductor 145B-2.
- the capacitor 160B-4 is not formed, and only the capacitor 160A is formed.
- the shape of the plated stub conductors 145A and 145B-2 is not limited to that shown in FIG. 15, and may be the same as that of the first, second, fourth, fifth or seventh embodiment described above. Good.
- FIG. 16 is an enlarged view including the plated stub conductors 145A and 145B-3 of the interposer substrate 104H according to the ninth embodiment of the present invention.
- the present embodiment is characterized in that a plated stub conductor 145B-3 is formed instead of the plated stub conductor 145B, as compared with the first embodiment.
- the plated stub conductor 145B-3 is formed by removing a part of the open end side of the plated stub conductor 145B-2 (see FIG. 11) used during the noble metal plating process of the connection terminal 141B.
- FIG. 11 the open end side of the plated stub conductor 145B-2
- a plated stub conductor 145B-3 and a ground conductor 162 face each other with an insulating layer 164 interposed therebetween to form a capacitor 160B-5.
- the capacitance value of the capacitor 160B-5 is reduced, and the delay amount of the signal transmitted through the connection wiring conductor 142A is reduced. Can be small.
- FIG. 17 is an enlarged view including the plated stub conductors 145A and 145B-2 and the ground conductor 162C of the interposer substrate 104I according to the tenth embodiment of the present invention.
- the present embodiment forms a plated stub conductor 145B-2 according to the fourth embodiment instead of the plated stub conductor 145B, and the plated stub conductor 145B on the surface of the interposer substrate 104I.
- a ground conductor 162C having a rectangular shape is formed in the vicinity of -2.
- a plated stub conductor 145B-2 and a ground conductor 162C face each other to form a capacitor 160B-6.
- the capacitance value of the capacitor 160B-6 can be increased, and the delay amount of the signal transmitted through the connection wiring conductor 142A can be increased.
- Eleventh embodiment. 18 is a cross-sectional view (cross-sectional view taken along line AB in FIG. 2) of a semiconductor device 100A according to the fourteenth embodiment of the present invention.
- the semiconductor device 100A according to the present embodiment is characterized by further including a plurality of solder balls 210 formed on the back surface of the interposer substrate 104, as compared to the semiconductor device 100 according to the first embodiment. This embodiment has the same effect as the first embodiment.
- the high-frequency digital signal is differentially transmitted or single-ended transmitted using the signal line including the connection wiring conductor 142A and the signal line including the connection wiring conductor 142B.
- the present invention is not limited to this, and the three or more plurality of semiconductor elements 102 are connected via three or more signal lines each including the connection wiring conductor 142, the via conductor 144, and the plating stub conductor 145.
- Three or more signals may be transmitted between the terminal 121 and three or more electrode pads 310 of the mother substrate 300. In this case, when processing the signals transmitted in a single end in relation to each other, a phase shift between the signals may cause noise. In such a case, each signal line (see FIG.
- each connection wiring conductor 142 is connected to each connection wiring conductor 142 so that the phase of each signal has a predetermined relationship with each other.
- the capacitance value of the capacitor formed using the plated stub conductor 145 may be adjusted. Specifically, the territories such as the capacitors are adjusted so that the phase relationship of the transmission signal at one end of each signal line is the same as the phase relationship of the reception signal at the other end of each signal line. do it. Specifically, each connection is made using at least one of the capacitors 160A, 160A-1 to 160A-4, 160B and 160B-1 to 160B-6 described in the first to tenth embodiments. The capacitance value of the capacitor formed using each plated stub conductor 145 connected to the wiring conductor 142 may be adjusted.
- each interposer substrate 140, 140A to 140I after the production of each interposer substrate 140, 140A to 140I, a part of the plating stub conductor 145 is removed to form the capacitors 160A, 160A-1 to 160A-4, 160B and 160B-1 to 160B-6.
- the capacitance value may be adjusted.
- a pair of differential signals is supplied to the semiconductor element 102 via the connection wiring conductors 142A and 142B of the interposer substrate 104. Perform a test for dynamic transmission.
- the phase difference between the transmitted differential signals is measured, and the capacitance value Ca of the capacitor 160A and the capacitance value Cb of the capacitor 160B are determined so that the phase difference is substantially 180 degrees. Then, a part of the plating stub conductor 145A or 145B is removed based on the determined capacitance values Ca and Cb.
- the plurality of terminals of the semiconductor element and the plurality of terminals are connected via the plurality of signal lines formed on the interposer substrate.
- a plurality of signals are transmitted to and from the plurality of electrode pads of the mother substrate, and each signal line is formed on the surface of the interposer substrate and electrically connected to one of the plurality of terminals of the semiconductor element.
- the conductor and the ground conductor are formed such that at least one strip conductor and the ground conductor face each other to form at least one capacitor, and a capacitance value of each capacitor is transmitted via each signal line. Since the phase of each signal thus adjusted is adjusted to have a predetermined relationship with each other at one end of each signal line, a high-frequency signal can be transmitted with higher accuracy than in the prior art.
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Abstract
Description
図1は本発明の第1の実施形態に係る半導体装置100の断面図(図2のラインA-Bに沿った断面図)であり、図2は図1のインターポーザ基板104の平面図であり、図4は図2のインターポーザ基板104のメッキスタブ導体145A及び145Bを含む拡大図である。また、図3は図2の接続配線導体142Bを含む信号線の等価回路図である。なお、以下の図4及び図9~図17において、接続配線導体142A及び142B以外の接続配線導体142及び当該接続配線導体142に接続されている構成要素の記載を省略する。
図9は、本発明の第2の実施形態に係るインターポーザ基板104Aのメッキスタブ導体145A及び145B-1を含む拡大図である。本実施形態は、第1の実施形態に比較して、メアンダ形状を有するメッキスタブ導体145Bに代えて、直線を折り曲げた形状を有するメッキスタブ導体145B-1を形成したことを特徴としている。図9において、メッキスタブ導体145B-1と接地導体162とは、絶縁層164を挟んで互いに対向してキャパシタ160B-1を形成する。
図10は、本発明の第3の実施形態に係るインターポーザ基板104Bのメッキスタブ導体145A及び145B-1ならびに接地導体162Aを含む拡大図である。本実施形態は、第2の実施形態に比較して、インターポーザ基板104Bの表面に櫛形の接地導体162Aを形成したことを特徴としている。図10において、メッキスタブ導体145B-1と接地導体162Aとは互いに対向してキャパシタ160B-2を形成する。メッキスタブ導体145B-1の長さ及び接地導体162Aの面積を大きくすることにより、キャパシタ160B-2の容量値を大きくして、接続配線導体142Bを介して伝送される信号の遅延量を大きくできる。
図11は、本発明の第4の実施形態に係るインターポーザ基板104Cのメッキスタブ導体145A-1及び145B-2を含む拡大図である。本実施形態は、第1の実施形態に比較して、以下の点が異なる。
(a)メッキスタブ導体145Aに代えて、接続配線導体142Aの幅Waより大きい幅Wsaの直線形状を有するメッキスタブ導体145A-1を形成したこと。
(b)メッキスタブ導体145Bに代えて、接続配線導体142Bの幅Wbと同一の幅Wsbの直線形状を有するメッキスタブ導体145B-2を形成したこと。
図12は、本発明の第5の実施形態に係るインターポーザ基板104Dのメッキスタブ導体145A及び145B-2ならびにストリップ導体145A-2を含む拡大図である。本実施形態は、第4の実施形態に比較して、メッキスタブ導体145A-1に代えて、第1の実施形態のメッキスタブ導体145A、及びビア導体144Aに接続された一端と開放端である他端とを有するストリップ導体145A-2を形成したことを特徴としている。メッキスタブ導体145A及び145A-2は接地導体162に対向している。図12において、ストリップ導体145A-2はオープンスタブ導体として振る舞い、メッキスタブ導体145A及びストリップ導体145A-2と、接地導体162とは互いに対向してキャパシタ160A-2を形成する。
図13は、本発明の第6の実施形態に係るインターポーザ基板104Eのメッキスタブ導体145A及び145B-2、ストリップ導体145A-2及び接地導体162Bを含む拡大図である。本実施形態は、第5の実施形態に比較して、インターポーザ基板104Eの表面において、メッキスタブ導体145Aとストリップ導体145A-2との間に長方形の接地導体162Bを形成したことを特徴としている。図13において、メッキスタブ導体145A及びストリップ導体145A-2と、接地導体162Bとは互いに対向してキャパシタ160A-3を形成する。接地導体162Bの面積を大きくすることにより、キャパシタ160A-3の容量値を大きくして、接続配線導体142Aを介して伝送される信号の遅延量を大きくできる。
図14は、本発明の第7の実施形態に係るインターポーザ基板104Fのメッキスタブ導体145A-3及び145Bを含む拡大図である。本実施形態は、第4の実施形態に比較して、メッキスタブ導体145A-1に代えて、枝分かれした形状を有するメッキスタブ導体145A-3を形成したことを特徴としている。図14において、メッキスタブ導体145A-3と接地導体162とは互いに対向してキャパシタ160A-4を形成する。メッキスタブ導体145A-3を枝分かれした形状で形成することによりメッキスタブ導体145A-3の面積を大きくして、キャパシタ160A-4の容量値を大きくして、接続配線導体142Aを介して伝送される信号の遅延量を大きくできる。
図15は、本発明の第8の実施形態に係るインターポーザ基板104Gのメッキスタブ導体145A及び145B-2ならびに切欠部162hを有する接地導体162を含む拡大図である。本実施形態は、第1の実施形態に比較して、メッキスタブ導体145Bに代えて、第4の実施形態のメッキスタブ導体145B-2を形成し、接地導体162のうちメッキスタブ導体145B-2に対向する部分の一部に切欠部162hを設けたことを特徴としている。図15において、メッキスタブ導体145B-2と、接地導体162のうちメッキスタブ導体145B-2に対向する部分とは、絶縁層164を挟んでキャパシタ160B-4を形成する。本実施形態によれば、切欠部162hを大きくすることにより、キャパシタ160B-4の容量値を小さくして、接続配線導体142Aを介して伝送される信号の遅延量を小さくできる。
図16は、本発明の第9の実施形態に係るインターポーザ基板104Hのメッキスタブ導体145A及び145B-3を含む拡大図である。本実施形態は、第1の実施形態に比較して、メッキスタブ導体145Bに代えて、メッキスタブ導体145B-3を形成したことを特徴としている。メッキスタブ導体145B-3は、接続端子141Bの貴金属メッキ処理時に用いられたメッキスタブ導体145B-2(図11参照)の開放端側の一部を除去することによって形成される。図16において、メッキスタブ導体145B-3と、接地導体162とは、絶縁層164を挟んで互いに対向してキャパシタ160B-5を形成する。貴金属メッキ処理時に用いられたメッキスタブ導体145B-2から除去する部分を大きくすることにより、キャパシタ160B-5の容量値を小さくして、接続配線導体142Aを介して伝送される信号の遅延量を小さくできる。
図17は、本発明の第10の実施形態に係るインターポーザ基板104Iのメッキスタブ導体145A及び145B-2ならびに接地導体162Cを含む拡大図である。本実施形態は、第1の実施形態に比較して、メッキスタブ導体145Bに代えて、第4の実施形態に係るメッキスタブ導体145B-2を形成し、インターポーザ基板104Iの表面においてメッキスタブ導体145B-2の近傍に長方形の形状を有する接地導体162Cを形成したことを特徴としている。図17において、メッキスタブ導体145B-2と、接地導体162Cとは互いに対向してキャパシタ160B-6を形成する。接地導体162Cの長さを長くすることにより、キャパシタ160B-6の容量値を大きくして、接続配線導体142Aを介して伝送される信号の遅延量を大きくできる。
図18は、本発明の第14の実施形態に係る半導体装置100Aの断面図(図2のラインA-Bに沿った断面図)である。本実施形態に係る半導体装置100Aは、第1の実施形態に係る半導体装置100に比較して、インターポーザ基板104の裏面に形成された複数の半田ボール210をさらに備えたことを特徴としている。本実施形態は、第1の実施形態と同様の効果を奏する。
102…半導体素子、
104,104A~104I…インターポーザ基板、
121,121A,121B…端子、
141,141A,141B…接続端子、
142,142A,142B…接続配線導体、
144,144A,144B,144G…ビア導体、
145,145A,145A-1,145A-3,145B-1~145B-3…メッキスタブ導体、
145A-2…ストリップ導体、
151,151A,151B…ワイヤ、
160A,160A-1~160A-4,160B,160B-1~160B-6…キャパシタ、
162,162A,162B,162C…接地導体、
162h…切欠部、
164…絶縁層、
171,171G…電極パッド、
210,210G…半田ボール、
300…マザー基板、
310,310G…電極パッド、
320…信号配線、
330…グランド配線。
Claims (15)
- インターポーザ基板の表面に実装され複数の端子を有する半導体素子と、複数の電極パッドを備えたマザー基板との間に設けられかつ接地導体を有するインターポーザ基板とを備えた半導体装置のためのインターポーザ基板において、
上記インターポーザ基板に形成された複数の信号線を介して、上記半導体素子の複数の端子と上記マザー基板の複数の電極パッドとの間で複数の信号を伝送し、
上記各信号線は、
上記インターポーザ基板の表面に形成され、上記半導体素子の複数の端子のうちの1つに電気的に接続された一端を有する接続配線導体と、
上記接続配線導体の他端に接続された一端と、上記マザー基板の複数の電極パッドのうちの1つに電気的に接続された他端とを有するビア導体と、
上記インターポーザ基板の表面に形成され、上記ビア導体の一端に接続された一端と、開放端である他端とを有するストリップ導体とを備え、
上記各ストリップ導体及び上記接地導体は、少なくとも1つの上記ストリップ導体と上記接地導体が互いに対向して少なくとも1つのキャパシタを形成するように形成され、
上記各キャパシタの容量値は、上記各信号線を介して伝送された各信号の位相が上記各信号線の一端において互いに所定の関係を有するように調整されたことを特徴とするインターポーザ基板。 - 上記ストリップ導体のうちの少なくとも1つは、蛇行した形状を有することを特徴とする請求項1記載のインターポーザ基板。
- 上記蛇行した形状は直線を折り曲げた形状であることを特徴とする請求項2記載のインターポーザ基板。
- 上記ストリップ導体のうちの少なくとも1つの幅は、他のストリップ導体の幅よりも大きいことを特徴とする請求項1記載のインターポーザ基板。
- 上記信号線のうちの少なくとも1つは、
上記インターポーザ基板の表面に上記接地導体に対向するように形成され、上記ビア導体の一端に接続された一端と、開放端である他端とを有する少なくとも1つの別のストリップ導体をさらに備えたことを特徴とする請求項1から4までのうちのいずれか1つの請求項記載のインターポーザ基板。 - 上記ストリップ導体のうちの少なくとも1つは、枝分かれした形状を有することを特徴とする請求項1から5までのうちのいずれか1つの請求項記載のインターポーザ基板。
- 上記接地導体は、上記各ストリップ導体の少なくとも一部に対向して上記各キャパシタを形成することを特徴とする請求項1から6までのうちのいずれか1つの請求項記載のインターポーザ基板。
- 上記接地導体は上記インターポーザ基板の表面に形成されたことを特徴とする請求項1から7までのうちのいずれか1つの請求項記載のインターポーザ基板。
- 上記複数の信号線は1対の差動信号を伝送するための第1及び第2の信号線を含み、
上記第1の信号線のストリップ導体と上記接地導体とによって形成される第1のキャパシタの容量値と、上記第2の信号線のストリップ導体と上記接地導体とによって形成される第2のキャパシタの容量値とは、上記第1及び第2の信号線に接続された上記半導体素子の1対の端子において、又は上記第1及び第2の信号線に接続された上記マザー基板の1対の電極パッドにおいて、上記1対の差動信号間の位相差が実質的に180度になるように調整されたことを特徴とする請求項1から8までのうちのいずれか1つの請求項記載のインターポーザ基板。 - 上記第1の信号線のストリップ導体の幅と上記第2の信号線のストリップ導体の幅とは互いに異なることを特徴とする請求項9記載のインターポーザ基板。
- 上記第1及び第2の信号線のうちの一方の信号線のストリップ導体のみが上記接地導体との間で上記キャパシタを形成することを特徴とする請求項9記載のインターポーザ基板。
- 上記複数の信号線は1対の伝送信号を伝送するための第3及び第4の信号線を含み、
上記第2の信号線のストリップ導体と上記接地導体とによって形成される第3のキャパシタの容量値と、上記第4の信号線のストリップ導体と上記接地導体とによって形成される第4のキャパシタの容量値とは、上記第3及び第4の信号線に接続された上記半導体素子の1対の端子において、又は上記第3及び第4の信号線に接続された上記マザー基板の1対の電極パッドにおいて、上記1対の伝送信号間の位相差が実質的に0度になるように調整されたことを特徴とする請求項1から8までのうちのいずれか1つの請求項記載のインターポーザ基板。 - 上記各接続配線導体及び上記各ストリップ導体はそれぞれ上記インターポーザ基板の表面にメッキ処理によって形成されたことを特徴とする請求項1から12までのうちのいずれか1つの請求項記載のインターポーザ基板。
- 請求項1から13までのうちのいずれか1つの請求項記載のインターポーザ基板と、
上記インターポーザ基板に実装された上記半導体素子とを備えたことを特徴とする半導体装置。 - 上記インターポーザ基板の裏面に形成され、上記各ビア導体の他端と上記外部基板の各電極パッドとを電気的に接続する複数の半田ボールをさらに備えたことを特徴とする請求項14記載の半導体装置。
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US8664768B2 (en) | 2012-05-03 | 2014-03-04 | Taiwan Semiconductor Manufacturing Company, Ltd. | Interposer having a defined through via pattern |
US20140034376A1 (en) * | 2012-08-01 | 2014-02-06 | Samtec, Inc. | Multi-layer transmission lines |
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US9748168B2 (en) * | 2015-10-29 | 2017-08-29 | Nxp Usa, Inc. | Substrate with routing |
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