WO2023210815A1 - 配線基板、半導体装置及び配線基板の製造方法 - Google Patents
配線基板、半導体装置及び配線基板の製造方法 Download PDFInfo
- Publication number
- WO2023210815A1 WO2023210815A1 PCT/JP2023/016877 JP2023016877W WO2023210815A1 WO 2023210815 A1 WO2023210815 A1 WO 2023210815A1 JP 2023016877 W JP2023016877 W JP 2023016877W WO 2023210815 A1 WO2023210815 A1 WO 2023210815A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solder
- solder pad
- wiring board
- pad
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
- H05K1/112—Pads for surface mounting, e.g. lay-out directly combined with via connections
- H05K1/113—Via provided in pad; Pad over filled via
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/18—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material
- H05K3/188—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material by direct electroplating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by soldering
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3452—Solder masks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/01—Manufacture or treatment
- H10W70/05—Manufacture or treatment of insulating or insulated package substrates, or of interposers, or of redistribution layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
- H10W70/65—Shapes or dispositions of interconnections
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
- H10W70/66—Conductive materials thereof
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/68—Shapes or dispositions thereof
- H10W70/685—Shapes or dispositions thereof comprising multiple insulating layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/072—Connecting or disconnecting of bump connectors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/20—Bump connectors, e.g. solder bumps or copper pillars; Dummy bumps; Thermal bumps
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/20—Bump connectors, e.g. solder bumps or copper pillars; Dummy bumps; Thermal bumps
- H10W72/221—Structures or relative sizes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/20—Bump connectors, e.g. solder bumps or copper pillars; Dummy bumps; Thermal bumps
- H10W72/241—Dispositions, e.g. layouts
- H10W72/242—Dispositions, e.g. layouts relative to the surface, e.g. recessed, protruding
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/90—Bond pads, in general
- H10W72/921—Structures or relative sizes of bond pads
- H10W72/922—Bond pads being integral with underlying chip-level interconnections
- H10W72/9226—Bond pads being integral with underlying chip-level interconnections with via interconnections
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/90—Bond pads, in general
- H10W72/921—Structures or relative sizes of bond pads
- H10W72/923—Bond pads having multiple stacked layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/90—Bond pads, in general
- H10W72/921—Structures or relative sizes of bond pads
- H10W72/926—Multiple bond pads having different sizes
Definitions
- the present invention relates to a wiring board, a semiconductor device, and a method for manufacturing a wiring board.
- solder balls are formed so that they can be bonded to the electrodes of semiconductor chips via conductive protrusions called solder balls.
- FC-BGA wiring board FC-BGA wiring board
- processors have been configured with multiple multi-CPUs and multi-cores, resulting in faster processing speeds and a significant increase in the amount of information handled by processors.
- the transmission capacity between the processor and the outside has increased dramatically, and even higher transmission speeds are required.
- optical interconnection technology that uses optical signals for information processing within routers and servers. It is also desired that devices, semiconductor packages, etc. using optical interconnection technology be compatible with conventional electrical interconnection mounting methods.
- the optical semiconductor element (semiconductor chip) mounted on the opto-electrical hybrid board described in Patent Document 2 is often thicker (higher) than a semiconductor chip that handles only electrical signals. For this reason, in a printed wiring board on which semiconductor chips having different thicknesses (heights) are directly mounted, the semiconductor chips have different heights on their upper surfaces.
- solder balls can be mounted on any of a semiconductor chip, a semiconductor package, and a printed wiring board.
- solder balls When solder balls are mounted on the printed wiring board side, solder balls of different diameters cannot be mounted at the same time. Therefore, mounting the solder balls is repeated multiple times for each diameter of the solder balls, which increases the number of steps.Furthermore, when mounting solder balls of different diameters separately for each diameter, it takes more effort to consider the order. there were.
- the present invention has been made in consideration of these circumstances, and even when semiconductor packages or semiconductor chips of different heights are mounted while making the pitch of the solder balls uniform, the top surface of the mounted product remains unchanged. It is an object of the present invention to provide a wiring board, a semiconductor device, and a method for manufacturing a wiring board that can make the heights of the wiring boards uniform.
- a first aspect of the present invention is a multilayer wiring board having a plurality of buildup layers, wherein the last buildup layer formed on the surface side is a first solder pad and a first solder pad. a solder resist layer on the front side of the buildup layer on the front side, and a solder resist layer from the respective surfaces of the first solder pad and the second solder pad to the surface of the solder resist layer.
- a second aspect of the present invention is that the solder resist layer is provided with an opening through which the surface of the first solder pad and the surface of the second solder pad are exposed on the surface side, and the solder resist layer is excluded from the opening.
- the surface of the solder resist layer has a substantially uniform height.
- the buildup layer on the front side further includes a third solder pad, and the first solder pad, the second solder pad, and the third solder pad are arranged such that the first solder pad, the second solder pad, and the third solder pad are equal to each other.
- the wiring board of the first aspect or the second aspect is formed at intervals.
- a fourth aspect of the present invention is that the first solder pad and the second solder pad are provided with solder balls having approximately the same diameter and approximately the same shape on the surface side.
- This is a wiring board according to the embodiment.
- the difference in height between the first solder pad and the second solder pad is determined by the height of the semiconductor chip to be bonded to the front surface side of the solder ball.
- the wiring board according to the fourth aspect is configured as follows.
- the height difference between the first solder pad and the second solder pad is equal to the height of a mounting pad portion of a semiconductor chip to be bonded to the surface side of the solder ball.
- the wiring board according to the fourth aspect is configured to be determined by:
- a seventh aspect of the present invention is a semiconductor device comprising the wiring board of the fifth aspect and the semiconductor chip.
- An eighth aspect of the present invention is a semiconductor device including the wiring board of the sixth aspect, the semiconductor chip, and the mounting pad section.
- a ninth aspect of the present invention is that, among the plurality of buildup layers, the last formed buildup layer on the front side has a first solder pad and a second solder pad, and the buildup layer on the front side
- the method of manufacturing a wiring board includes the step of providing an opening through which a part of the surface of a solder pad is exposed on the surface side.
- the wiring board, semiconductor device, and wiring board manufacturing method of the present invention even when semiconductor packages or semiconductor chips of different heights are mounted while making the pitch of the solder balls uniform, The height of the top surface can be made the same. Further, the solder resist layer covers solder pads having different solder heights with a uniform height. Therefore, when injecting underfill between the wiring board and semiconductor chip after mounting the semiconductor chip, the flow of underfill is not obstructed by steps and spreads smoothly, increasing the productivity of the underfilling process. This results in a significant improvement.
- FIG. 1 is a diagram showing a cross section of an FC-BGA wiring board according to a first embodiment of the present invention.
- FIG. 3 is a diagram illustrating an example of the manufacturing process of the wiring board for the same FC-BGA wiring board.
- FIG. 3 is a diagram illustrating an example of the manufacturing process of the wiring board for the same FC-BGA wiring board.
- FIG. 7 is a cross-sectional view showing an example of a semiconductor device in which a semiconductor chip is mounted on an FC-BGA wiring board according to a second embodiment of the present invention.
- FIG. 7 is a cross-sectional view showing an example of a semiconductor device in which a semiconductor chip is mounted on an FC-BGA wiring board according to a third embodiment of the present invention.
- FIG. 7 is a diagram showing a modification of a semiconductor device in which a semiconductor chip and a heat spreader are mounted on an FC-BGA wiring board according to a third embodiment of the present invention.
- an FC-BGA wiring board 100 (wiring board) according to the first embodiment of the present invention includes a wiring board 10 and solder balls 20.
- the wiring board 10 is a board with a multilayer structure having a plurality of buildup layers.
- the wiring board 10 includes a buildup layer (wiring layer) 1 and a solder resist layer 4.
- the buildup layer (wiring layer) 1 is a layer in which a plurality of wiring layers are stacked.
- the buildup layer 1 includes a first layer 2 and a second layer 3. Note that the buildup layer 1 is not limited to the multilayer structure in which two layers are stacked as illustrated in FIG. 1, but may be a multilayer structure in which three or more layers are stacked.
- the first layer 2 is one of the build-up layers 1 and is formed below.
- the first layer 2 is formed by stacking interlayer insulating materials made of epoxy resin or the like and laminating them using a hot press or the like.
- thermosetting resin is used as the interlayer insulation material.
- a material containing glass cloth may be used as the interlayer insulating material.
- the first layer 2 may be formed of paper, other resin, or the like.
- the first layer 2 includes a plurality of third conductor parts 7 in a part.
- the third conductor portion 7 is formed from a conductive material whose main component is metal such as copper.
- a part of the first layer 2 illustrated in FIG. 1 includes three third conductor portions 7 having substantially the same shape and size.
- the third conductor portions 7 are provided in a part of the first layer 2 in a row along the left-right direction.
- the third conductor section 7 illustrated in FIG. 1 has a pad-on-via structure in which an interlayer conductive section 71 called a via is provided in a pad section 72.
- the third conductor portion 7 is not limited to the pad-on-via structure.
- the third conductor section 7 may include a pad section 72 at a position that does not overlap the interlayer conduction section 71 in the vertical direction using a wiring or the like that connects the pad section 72 and the interlayer conduction section 71.
- the interlayer conductive portion 71 is formed in a hole penetrating the first layer 2 together with the pad portion 72 by electrolytic copper plating or the like.
- the upper surface of the interlayer conductive portion 71 is approximately at the same height as the upper surface 2f of the first layer 2.
- the pad section 72 is provided above the interlayer conduction section 71.
- the pad portion 72 is formed together with the interlayer conductive portion 71 by electrolytic copper plating or the like.
- the pad portion 72 projects upward from the first layer 2, and the upper surface of the pad portion 72 is the upper surface 7f of the third conductor portion 7.
- the third conductor portion 7 is formed by integrating the interlayer conductive portion 71 and the pad portion 72 by a plating process using a semi-additive method described below. Further, the upper surfaces 7f of the three third conductor sections 7 have substantially the same height in the vertical direction.
- the second layer 3 is laminated onto the upper surface (surface) 2f of the first layer 2.
- the second layer 3 is the last layer formed on the upper surface 1f of the buildup layer 1.
- the second layer 3 is formed, for example, similarly to the first layer 2, by stacking film-like interlayer insulating materials and laminating them using a hot press or the like.
- a thermosetting resin that hardens with heat during lamination can be used.
- the second layer 3 can also use a photosensitive insulating resin as the interlayer insulating material.
- the second layer 3 uses a photosensitive insulating resin layer 3a (see FIG. 2(a), etc.), which will be described later.
- a part of the second layer 3 illustrated in FIG. 1 includes a plurality of solder pads 6. As shown in FIG. 1, three solder pads 6 are provided in a part of the second layer 3 in a row along the left-right direction. Note that the plurality of solder pads 6 are arranged in a grid pattern on the upper surface 2f side of the first layer 2, for example.
- the solder pads 6 illustrated in FIG. 1 are stacked above the third conductor portion 7 to form a stacked via.
- the solder pads 6 do not need to be formed in a stacked manner as in stacked vias, and may be formed in a stepped shape, for example, as in a staggered via, or may be formed in other shapes.
- the solder pad 6 has a pad-on-via structure composed of a pad and a via provided in the pad, similarly to the third conductor portion 7.
- the solder pad 6 is not limited to the pad-on-via structure, and may be provided with a pad at a position that does not overlap the via in the vertical direction using wiring or the like. Further, the solder pad 6 may be further configured using a land, wiring, or the like.
- solder pads 6 are formed by a plating process that will be described later.
- Solder pad 6 serves as an electrode for bonding to a semiconductor element.
- the solder pad 6 includes a first solder pad 61, a second solder pad 62, and a third solder pad 63.
- the second solder pad 62 and the third solder pad 63 have substantially the same shape and the same size, as shown in FIG. 1, so a description of the third solder pad 63 will be omitted.
- the pitch interval from the center of the first solder pad 61 to the center of the second solder pad 62 in the left-right direction is defined as a pitch P1.
- the pitch interval from the center of the second solder pad 62 to the center of the third solder pad 63 is defined as a pitch P2.
- the lengths of pitch P1 and pitch P2 are approximately the same. Therefore, the first solder pad 61, the second solder pad 62, and the third solder pad 63 are formed on the second layer 3 at equal intervals. Note that the lengths of the pitch P1 and the pitch P2 do not have to be the same.
- the first solder pad 61 is provided above the rightmost third conductor part 7 among the three third conductor parts 7 . Note that since the solder pad 6 is not limited to a stacked via, the first solder pad 61 does not need to be provided above the third conductor portion 7.
- the first solder pad 61 is provided on the right side of the second solder pad 62 and the third solder pad 63.
- the first solder pad 61 includes a first conductor part 81 and a second conductor part 82, as shown in FIG.
- the first conductor portion 81 is a plated portion provided above the pad portion 72 of the third conductor portion 7.
- the first conductor portion 81 is formed by plating using a semi-additive construction method, which will be described later.
- the first conductor portion 81 includes, for example, an upper pad and a lower via formed in a through hole penetrating the second layer 3 .
- the first conductor portion 81 is formed, for example, by plating each opening (first resist opening 4p, see FIG. 3(a)) opened by exposure and development, which will be described later. Further, the first conductor portions 81 formed in each opening are formed such that the upper surfaces of the first conductor portions 81 are at the same height in the vertical direction, as shown in FIG. 3(b). .
- the first conductor portion 81 has an upper pad formed larger than the inner diameter of the opening, and projects upward from the second layer 3 . Note that the first conductor portion 81 may further include lands, wiring, and the like.
- the second conductor part 82 is a plating layer provided above the first conductor part 81.
- the second conductor portion 82 is formed by a plating process using a semi-additive method described below.
- the outer diameter of the second conductor portion 82 is smaller than the outer diameter of the pad above the first conductor portion 81 .
- a second conductor part 82 is further formed above the first conductor part 81 by a plating process.
- the first conductor part 81 and the second conductor part 82 are integrated to form the first solder pad 61.
- the second solder pad 62 includes the first conductor portion 81 described above.
- the second solder pad 62 does not include the second conductor portion 82.
- the second solder pad 62 is formed between the first solder pad 61 and the third solder pad 63.
- the second solder pad 62 and the third solder pad 63 having the first conductor portion 81 are arranged on the upper surface 62f of the second solder pad 62 and the third solder pad 63, respectively, in the vertical direction, as shown in FIG. 3(c). , 63f are formed to have substantially the same height. Further, the height of the upper surface 61f of the first solder pad 61 including the first conductor portion 81 and the second conductor portion 82 is higher than the upper surfaces 62f and 63f of the second solder pad 62 and the third solder pad 63, respectively. It is higher by the amount of the conductor portion 82.
- the solder resist layer 4 is a layer laminated on the upper surface (surface) 1f of the buildup layer 1.
- the upper surface 4 f of the solder resist layer 4 is the upper surface of the wiring board 10 .
- the solder resist layer 4 may be made of, for example, a photosensitive insulating resin whose main component is phenolic resin or polyimide resin, or may contain filler such as silica or alumina.
- Solder resist layer 4 includes openings 5 .
- the opening 5 is a hole formed in the solder resist layer 4.
- the opening 5 includes a first opening 51, a second opening 52, and a third opening 53. Note that, as shown in FIG. 1, the second opening 52 and the third opening 53 have substantially the same shape and the same size, so a description of the third opening 53 will be omitted.
- the first opening 51 is formed on the upper surface 4f of the solder resist layer 4, and accommodates a portion of the solder ball 20, which will be described later.
- the first opening 51 is formed above the first solder pad 61 and on the right side of the second opening 52 and the third opening 53.
- the bottom surface of the first opening 51 substantially coincides with the top surface 61f of the first solder pad 61 among the solder pads 6 included in the second layer 3.
- the inner diameter of the first opening 51 is smaller than the upper surface 61f of the first solder pad 61.
- the second opening 52 is formed on the upper surface 4f of the solder resist layer 4, and accommodates a portion of the solder ball 20, which will be described later.
- the second opening 52 is formed above the second solder pad 62 .
- the bottom surface of the second opening 52 substantially coincides with the top surface 62f of the second solder pad 62 among the solder pads 6 included in the second layer 3.
- the inner diameter of the second opening 52 is smaller than the upper surface 62f of the second solder pad 62.
- the third opening 53 is formed above the third solder pad 63.
- the first opening 51, second opening 52, and third opening 53 formed above the three solder pads 6 are arranged in this order from the right side in the left-right direction. That is, the first opening 51, the second opening 52, and the third opening 53 are each provided above the solder pad 6, and are formed in the solder resist layer 4 at equal intervals.
- the height of the upper surface 4f of the solder resist layer 4 is uniform. As described above, the height of the upper surface 61f of the first solder pad 61 is higher than the respective upper surfaces 62f and 63f of the second solder pad 62 and the third solder pad 63 by the amount of the second conductor portion 82.
- the height from the upper surface 61f of the first solder pad 61 to the upper surface 4f of the solder resist layer 4 is defined as H1.
- the height from the height of the upper surface 62f of the second solder pad 62 and the height of the upper surface 63f of the third solder pad 63 to the upper surface 4f of the solder resist layer 4 is defined as H2.
- the height H1 is smaller than the height H2 by the second conductor portion 82. Therefore, the height H1 and the height H2 are different from each other.
- the solder ball 20 is formed, for example, containing tin (Sn) as a main component, and is, for example, a tin-silver-based solder (SnAg-based solder).
- the solder ball 20 includes a first solder ball 21 and a second solder ball 22. Note that the solder ball 20 may be formed of the same material as the solder pad 6.
- the first solder ball 21 is formed into a dome shape with a convex upward portion on the upper surface 61f of the first solder pad 61. A lower portion of the first solder ball 21 is accommodated in the first opening 51 .
- the second solder ball 22 is formed in a dome shape with a convex upper part on the upper surface 62f of the second solder pad 62 and the upper surface 63f of the third solder pad 63. A lower portion of the second solder ball 22 is accommodated in the second opening 52 and the third opening 53.
- the first solder ball 21 and the second solder ball 22 are formed to have substantially the same shape and size.
- the wiring board 10 of the FC-BGA wiring board 100 is manufactured using a semi-additive construction method.
- the wiring board 10 is formed by using a resist pattern, for example, to form a reverse pattern of a wiring pattern formed on the upper surface of a seed layer such as a seed layer 3b (see FIG. 2C), which will be described later.
- the wiring board 10 is electrolytically copper plated to form the third conductor part 7 on the first layer 2 and the first conductor part 81 and the second conductor part 82 on the second layer 3.
- the wiring board 10 is formed by removing the resist pattern and finally removing the seed layer by flash etching.
- a negative photosensitive insulating resin is coated or laminated on the upper surface 2f of the first layer 2 to form an insulating resin layer 3a.
- a third conductor portion 7 is formed on the first layer 2 by a conventionally known method.
- the portion where all the insulating resin layer 3a is left is set as an exposed portion 3p, and the portion above the position where the third conductor portion 7 is formed is set as an unexposed portion 3q, and exposure is performed. After that, development is performed.
- the exposure illuminance of the exposure part 3p during this exposure step is preferably less than 20,000 W/cm 2 , more preferably 10,000 W/cm 2 or less.
- a through hole penetrating the insulating resin layer 3a is formed below the unexposed portion 3q by development. If necessary, plasma treatment is performed on the through-hole to remove resin residue.
- a seed layer 3b is formed on the upper surface of the insulating resin layer 3a by using a sputtering method or a vacuum evaporation method, such as a metal thin film or a chemical copper plating film.
- Seed layer 3b is a thin film layer that provides conductivity.
- the seed layer 3b is removed by flash etching in a semi-additive construction method.
- the second layer 3 is formed by the above manufacturing process.
- a first resist layer (plating resist layer) 4a is formed on the upper surface 3f of the second layer 3 by coating or laminating.
- first resist openings 4p are formed above each through-hole in the second layer 3 by exposure and development.
- plating (deposition) treatment is performed until each opening (first resist opening 4p) is filled with electrolytic copper plating.
- a conductor portion 81 is formed in each opening.
- the height of the first conductor part 81 in each opening is formed such that the upper surfaces of the first conductor parts 81 have the same height in the vertical direction.
- the material of the first conductor portion 81 for example, metals such as Cu and Ni, or alloys containing at least one kind of metal selected from these metals can be used.
- the two first conductor parts 81 formed on the left side become the second solder pad 62 and the third solder pad 63, respectively.
- the first resist layer (plating resist layer) 4a is stripped using a stripping solution dedicated to the plating resist used or a stripping solution with an equivalent function.
- a second resist layer (plating resist layer) 4b is formed on the upper surfaces of the second layer 3 and the first conductor portion 81 by coating or laminating. Thereafter, a second resist opening 4q is formed on the first conductor portion 81 formed on the rightmost side by exposure and development.
- a plating (deposition) process is performed by electrolytic copper plating until the second resist opening 4q is filled, thereby forming the second conductor portion 82.
- the material of the second conductor part 82 similarly to the first conductor part 81, for example, metals such as Cu and Ni, or alloys containing at least one kind of metal selected from these metals can be used.
- the first conductor portion 81 and the second conductor portion 82 are integrated to form the first solder pad 61.
- the first conductor part 81 and the second conductor part 82 are formed of the same type of metal.
- the second resist layer (plating resist layer) 4b is stripped using a stripping solution dedicated to the plating resist used or a stripping solution with an equivalent function.
- the first resist layer 4a and the second resist layer 4b are for forming an opening to electrolytic plating before performing electrolytic plating on the seed layer 3b.
- a non-photosensitive plating resist layer there are methods of forming openings by screen printing, and methods of removing desired portions and forming openings by irradiating with a laser beam.
- a photosensitive plating resist layer openings are formed through exposure and development steps.
- the material for the plating resist layer is not particularly limited as long as it can withstand the electrolytic plating bath.
- the electrolytic plating bath is a copper sulfate plating bath, it is acidic, so any acid-resistant material may be used, and ordinary dry film resists or various liquid resists can be used.
- the first conductor portion 81 and the second conductor portion 82 may be formed of a plating layer that is harder than copper plating and is less likely to be polished.
- nickel plating can be suitably used.
- a solder resist layer 4 is formed by applying or laminating the upper surfaces of the second layer 3, the first solder pad 61, the second solder pad 62, and the third solder pad 63. do. Thereafter, by exposure and development, the upper surface 61f of the first solder pad 61, the upper surface 62f of the second solder pad 62, and the upper surface 63f of the third solder pad 63 have approximately the same size as the first solder ball 21 and the second solder ball 22.
- An opening 4r having a radius of 4 is formed.
- the openings 4r formed are the first opening 51, second opening 52, and third opening 53 described above.
- the upper surface 61f of the first solder pad 61, the upper surface 62f of the second solder pad 62, and the upper surface 63f of the third solder pad 63 are each exposed upward.
- the bottom of the opening 4r of the solder resist layer 4 may be subjected to surface treatment if necessary. Further, the height of the upper surface 4f of the solder resist layer 4 excluding the opening 4r is formed to be uniform.
- solder paste is screen printed or flux is applied to the first solder pad 61, second solder pad 62, and third solder pad 63 of the build-up layer 1 of the wiring board 10.
- ball-shaped electrode terminals solder balls
- solder balls are transferred and reflowed to form solder balls 20, thereby completing the FC-BGA wiring board 100.
- the FC-BGA wiring board 100 is formed. Note that by repeating the steps from (a) in FIG. 2 to (h) in FIG. 3, an arbitrary number of layers can be formed on the upper surface of the wiring board 10.
- the above-described manufacturing method makes it possible to manufacture an FC-BGA wiring board 100 partially equipped with solder pads 6 of different heights. Therefore, in the above manufacturing method, by adjusting the height H1 and the height H2, the upper surface height of the first solder ball 21 and the second solder ball 22, which has approximately the same size and shape as the first solder ball 21, can be adjusted. The height of the top surface can be adjusted arbitrarily.
- the height H1 and the height H2 can be adjusted arbitrarily. That is, in the method for manufacturing the FC-BGA wiring board 100, the height of each solder pad 6 can be adjusted while the upper surface 4f of the solder resist layer 4 can be set to a uniform height. Therefore, for example, when mounting liquid resin for encapsulating an integrated circuit such as underfill on the FC-BGA wiring board 100 with the upper surface 4f as the upper surface, good mounting performance can be achieved without inhibiting the flow of the liquid resin. can be maintained.
- the lengths of the pitch P1 and the pitch P2 are formed to be approximately the same. Therefore, when mounting a semiconductor chip or the like on the solder ball 20, for example, it is possible to use the semiconductor chip without adjusting the length between each electrode (mounting pad part) to the solder ball 20 of the FC-BGA wiring board 100. can. Furthermore, since the lengths of the pitch P1 and the pitch P2 are substantially the same, manufacturing of the semiconductor chip is facilitated, and the time and effort required for the manufacturing process can be reduced.
- a semiconductor device 400 according to the second embodiment of the present invention includes a semiconductor chip 200 in addition to an FC-BGA wiring board 100A. As shown in FIG. 4, the semiconductor chip 200 includes an optical communication semiconductor chip 210 and a telecommunication semiconductor chip 220. The telecommunication semiconductor chip 220 is lower in height than the optical communication semiconductor chip 210 in the vertical direction.
- the FC-BGA wiring board 100A includes a wiring board 10A and solder balls 20.
- the semiconductor chip 200 may include a mounting pad portion (not shown). The mounting pad portion is provided below the semiconductor chip 200 and is bonded to the solder ball 20 to electrically connect the semiconductor chip 200 and the wiring board 10A.
- the wiring board 10A includes a solder pad 6A on a part of the second layer 3 shown in FIG. As shown in FIG. 4, the wiring board 10A has a different number of solder pads 6A compared to the first embodiment.
- the solder pad 6A includes two second solder pads 62, three first solder pads 61, and two second solder pads 62 arranged in one row along the left-right direction from the right side.
- the solder pads 6A are provided at approximately equal intervals.
- the difference in height between the height H1 and the height H2 in the vertical direction is that when the semiconductor chip 200 is bonded (mounted) to the solder balls 20 from above, the semiconductor chip is The upper surfaces 200f of 200 are arbitrarily adjusted so that they all have substantially the same height. That is, the height of the semiconductor chip 200 determines the difference in height between the height H1 and the height H2. In this embodiment, the height H1 is smaller than the height H2, similar to the first embodiment. Note that when the semiconductor chip 200 includes a mounting pad section, the difference in height between the height H1 and the height H2 may be determined by the height of the mounting pad section.
- the solder ball 20 includes a first solder ball 21 and a second solder ball 22.
- the first solder ball 21 is formed on the upper surface 61f of the first solder pad 61.
- the second solder ball 22 is formed on the upper surface 62f of the second solder pad 62.
- the first solder ball 21 and the second solder ball 22 are formed to have substantially the same size and shape.
- the semiconductor chip 200 is mounted on the FC-BGA wiring board 100A.
- each electrode (mounting pad part) of the two optical communication semiconductor chips 210 comes into contact with the second solder ball 22 formed on the upper surface 62f of the second solder pad 62 of the wiring board. It is implemented as follows.
- the electrode (mounting pad portion) of the telecommunication semiconductor chip 220 which is lower in height than the optical communication semiconductor chip 210 in the vertical direction, is placed on the first solder pad 61 formed on the upper surface 61f of the first solder pad 61 of the wiring board 10A. It is mounted so as to come into contact with one solder ball 21 .
- the height H1 is set smaller than the height H2
- the top surfaces 200f of all the semiconductor chips 200 are at approximately the same height. become.
- the plurality of semiconductor chips 200 are mounted on the FC-BGA wiring board 100A, and the semiconductor device 400 is formed.
- the height H1 and the height H2 can be adjusted according to the heights of the plurality of semiconductor chips 200. Therefore, after mounting the plurality of semiconductor chips 200, the upper surfaces 200f of all the semiconductor chips 200 can be set to have substantially the same height. Furthermore, when mounting, for example, a heat spreader or the like on the upper surface 200f of the semiconductor chip 200, it can be accurately attached to the semiconductor chip 200.
- the heights of the upper surfaces of the first solder ball 21 and the second solder ball 22 can be adjusted without changing the respective sizes of the first solder ball 21 and the second solder ball 22. I can do it. Therefore, the first solder ball 21 and the second solder ball 22 can be easily formed on the wiring board 10A.
- first solder ball 21 and the second solder ball 22 are too large in size, adjacent solder balls 20 may join together, resulting in unnecessary electrical conduction. Moreover, if the first solder ball 21 and the second solder ball 22 are too small in size, for example, there will be a problem that they will not come into contact with the respective mounting pads provided on the opposing semiconductor chip 200 during mounting. In this embodiment, the occurrence of the above-mentioned problems can be reduced.
- a semiconductor device 400B according to the third embodiment of the present invention includes an FC-BGA wiring board 100B and a semiconductor chip 200B.
- the semiconductor chip 200B includes a first semiconductor chip 210B and a second semiconductor chip 220B, which have different lengths in the left-right direction.
- the first semiconductor chip 210B is shorter in length than the second semiconductor chip 220B in the left-right direction.
- the FC-BGA wiring board 100B includes a wiring board 10B and solder balls 20.
- the semiconductor chip 200B may include a mounting pad portion (not shown), similarly to the second embodiment.
- the wiring board 10B includes a solder pad 6B on a part of the second layer 3 shown in FIG. As shown in FIG. 5, the wiring board 10B has a different number of solder pads 6B compared to the first embodiment.
- the solder pad 6B includes one first solder pad 61, four second solder pads 62, and one first solder pad 61 arranged in one row along the left-right direction from the right side.
- the first solder pads 61 are provided at both ends of the wiring board 10B.
- the solder pads 6B are provided at approximately equal intervals.
- the height H1 is set to an arbitrary height so as to be smaller than the height H2.
- the solder ball 20 includes a first solder ball 21 and a second solder ball 22, similar to the first embodiment and the second embodiment.
- the first solder ball 21 is formed on the upper surface 61f of the first solder pad 61.
- the second solder ball 22 is formed on the upper surface 62f of the second solder pad 62.
- the first solder ball 21 and the second solder ball 22 are formed to have substantially the same size and shape.
- the semiconductor chip 200B is mounted on the FC-BGA wiring board 100B.
- the first semiconductor chip 210B is mounted so that its electrodes (mounting pad portion) are in contact with the second solder balls 22 formed on the upper surface 62f of the second solder pads 62 of the wiring board 10B. be done. At this time, in the vertical direction, the height of the upper surface 210Bf of the first semiconductor chip 210B and the height of the upper surface 21f of the first solder ball 21 are approximately the same height.
- the second semiconductor chip 220B is mounted from above so as to overlap the first semiconductor chip 210B in the vertical direction.
- the second semiconductor chip 220B is mounted so that the electrodes (mounting pad portions) are in contact with the first solder balls 21 formed on the upper surface 61f of the first solder pads 61 provided at both ends of the wiring board 10B.
- a plurality of semiconductor chips 200B are mounted on the FC-BGA wiring board 100B, and a semiconductor device 400B is formed.
- the FC-BGA wiring board 100B of the present embodiment can adjust the height H1 and the height H2 so that the first solder ball 21 and the second solder ball 22 have approximately the same size and the same shape.
- the height of the upper surfaces of the first solder ball 21 and the second solder ball 22 can be adjusted without changing the size of the solder ball 21 and the second solder ball 22. Therefore, the second semiconductor chip 220B can be mounted such that the lower surface 220Bg accurately contacts the upper surface 210Bf of the first semiconductor chip 210B, and the upper surface 220Bf is substantially horizontal.
- the present invention is not limited to the above embodiment.
- the components in one embodiment include those that can be easily imagined by those skilled in the art, those that are substantially the same, and those that are in the so-called equivalent range.
- the components disclosed in one embodiment can be combined as appropriate.
- the wiring board of the FC-BGA wiring board of the present invention is not limited to the above-described embodiments, and may be composed of a large number of buildup layers. Further, the third conductor portion and the solder pad included in the wiring board of the FC-BGA wiring board of the present invention are not limited to the pad-on-via structure. The third conductor portion and the solder pad may include pads at positions that do not overlap the vias in the vertical direction. Further, the pad is not an essential component and may be a land.
- the wiring board of the wiring board of the present invention may be composed of lands, wiring, etc., or may be composed of a combination of each.
- solder pads of the present invention do not need to be formed in a stacked manner like a stacked via, and may be formed in a stepped shape, for example, like a staggered via, or may be formed in other shapes.
- FC-BGA wiring board of the present invention may further include an interposer board for chip connection.
- solder pads, solder balls, etc. of the FC-BGA wiring board of the present invention is not limited. Solder pads, solder balls, etc. can be arbitrarily set according to the size or shape of the wiring board and the mounting pad portion of the semiconductor chip.
- the FC-BGA wiring board of the present invention does not need to include the solder balls 20.
- Solder balls 20 are not an essential component.
- the first solder ball 21 and the second solder ball 22 have substantially the same size and shape, but in the FC-BGA wiring board of the present invention, the first solder ball 21 and the second solder ball 22 have substantially the same size and shape.
- the two solder balls 22 may have different sizes and shapes.
- the first solder pad 61, the second solder pad 62, and the third solder pad 63 are provided in one row along the left and right direction, but the FC-BGA of the present invention
- the wiring boards for use are not limited to this, and may be provided in one row along the direction intersecting the left-right direction.
- the number of columns is not particularly limited.
- the first conductor portion 81 and the second conductor portion 82 of the first solder pad 61, the second solder pad 62, and the third solder pad 63 are made of the same type of metal; It is not limited, and may be a different metal.
- the semiconductor chip 200 mounted on the FC-BGA wiring board 100A according to the second embodiment of the present invention includes an optical communication semiconductor chip 210 and a telecommunication semiconductor chip 220, but is not particularly limited. .
- the semiconductor chip 200 may be mounted with a conventionally known semiconductor made of silicon, gallium arsenide, selenium, carbon, or the like.
- the semiconductor chip 200B mounted on the FC-BGA wiring board 100B according to the third embodiment of the present invention the semiconductor chip 200B is not particularly limited, and may be, for example, silicon, gallium arsenide, selenium, or carbon ( A conventionally known semiconductor made of carbon or the like may also be mounted.
- the present invention can also be applied to mounting forms such as a technique for stacking and mounting semiconductor chip groups (3D mounting) and a technique for mounting semiconductor chip groups on an interposer (2.5D mounting).
- the solder pads 6A include two second solder pads 62, three first solder pads 61, and two second solder pads 62 from the right side in one row along the left-right direction.
- the solder pads 62 are provided in a row along the direction intersecting the left-right direction on the top or bottom surface of the FC-BGA wiring board. You can. Further, the arrangement order, number, etc. are not limited, and may be from the left side instead of from the right side. Furthermore, the number of columns is not particularly limited either.
- the solder pads 6B according to the third embodiment may also be formed in one row along the left-right direction, like the solder pads 6A, or may be formed in one row along the direction intersecting the left-right direction. may have been done.
- a heat spreader 300 may be mounted in place of the second semiconductor chip 220B of the semiconductor chip 200B, as shown in FIG. Also in this case, the FC-BGA wiring board 100B is formed on the upper surface of the first solder pad 61, the second solder pad 62, and the third solder pad 63 by adjusting the height H1 and the height H2. The height of the top surface of the solder balls 20 having substantially the same size and shape can be adjusted as desired. Therefore, the heat spreader 300 can be mounted so that the lower surface 300g accurately contacts the upper surface 210Bf of the first semiconductor chip 210B, and the upper surface 300f is substantially horizontal.
- the wiring board, semiconductor device, and wiring board manufacturing method according to the present invention even when different semiconductor packages are mounted while maintaining the pitch interval of the solder balls uniformly, The heights of their top surfaces can be made the same.
- the height of the top surface of the solder balls can be adjusted while maintaining the pitch interval of the solder balls uniformly. It can be used industrially because it makes it easier to mount parts that require high adhesion, such as heat sinks, in the assembly of electronic devices.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Structure Of Printed Boards (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
Description
本発明の第一の態様は、複数のビルドアップ層を有する多層構造の配線基板であって、前記ビルドアップ層のうち、最後に形成された表面側のビルドアップ層が第一はんだパッド及び第二はんだパッドを有し、前記表面側のビルドアップ層の前記表面側にソルダーレジスト層を有し、前記第一はんだパッド及び前記第二はんだパッドのそれぞれの表面から前記ソルダーレジスト層の表面までの高さが、異なる、配線基板である。
本発明の第一実施形態について、図1から図3を参照して説明する。以下で説明する実施形態や変形例において、相互に対応する構成については同一の符号を付し、重複部分については説明を省略する場合がある。また、以下の説明において、例えば「平行」や「直交」、「中心」、「同軸」等の相対的または絶対的な配置を示す表現は、厳密にそのような配置を表すのみならず、公差や同じ機能が得られる程度の角度や距離をもって相対的に変位している状態も表すものとする。
次に、本発明の第二実施形態について、図4を用いて説明する。以降の説明において、既に説明したものと共通する構成については、同一の符号を付して重複する説明を省略する。なお、以下の実施形態は、いずれも第一実施形態と比較して配線基板が異なっている。従って、以下の説明では、第一実施形態との相違点を中心に説明する。本発明の第二実施形態に係る半導体装置400は、FC-BGA用配線基板100Aに加えて、半導体チップ200を備えている。図4に示すように、半導体チップ200は、光通信用半導体チップ210と電気通信用半導体チップ220とを備えている。電気通信用半導体チップ220は、上下方向において光通信用半導体チップ210よりも高さが低い。FC-BGA用配線基板100Aは、配線基板10Aと、はんだボール20と、を備えている。なお、半導体チップ200は、図示しない実装パッド部を備えていてもよい。実装パッド部は、半導体チップ200の下方に備えられ、はんだボール20と接合して、半導体チップ200と配線基板10Aとを電気的に接続する。
次に、本発明の第三実施形態について、図5を用いて説明する。以下の実施形態は、いずれも第二実施形態と比較して特に配線基板と、半導体チップとが異なっている。本発明の第三実施形態に係る半導体装置400Bは、FC-BGA用配線基板100Bと、半導体チップ200Bとを備える。半導体チップ200Bは、左右方向において長さの異なる第一半導体チップ210Bと第二半導体チップ220Bとを備えている。第一半導体チップ210Bは、左右方向において第二半導体チップ220Bよりも長さが短い。FC-BGA用配線基板100Bは、配線基板10Bと、はんだボール20と、を備えている。なお、半導体チップ200Bは、第二実施形態と同様に、図示しない実装パッド部を備えていてもよい。
本発明のFC-BGA用配線基板の配線基板は、上述の実施形態に限定されず、多数のビルドアップ層によって構成されていてもよい。また、本発明のFC-BGA用配線基板の配線基板の備える第三導体部及びはんだパッドは、パッドオンビア構造に限定されない。第三導体部及びはんだパッドは、上下方向においてビアに重ならない位置にパッドを備えていてもよい。また、パッドは、必須の構成ではなく、ランドであってもよい。本発明の配線基板の配線基板は、ランドや配線等によって構成されていてもよいし、各々を組み合わせて構成されていてもよい。
10、10A、10B 配線基板
1 ビルドアップ層(配線層)
2 第一層
3 第二層
4 ソルダーレジスト層
4a 第一レジスト層(めっきレジスト層)
4b 第二レジスト層(めっきレジスト層)
5 開口部
6、6A、6B はんだパッド
61 第一はんだパッド
62 第二はんだパッド
63 第三はんだパッド
7 第三導体部
81 第一導体部
82 第二導体部
20 はんだボール
21 第一はんだボール
22 第二はんだボール
200、200B 半導体チップ
300 ヒートスプレッダ
400、400B 半導体装置
H1、H2 高さ
P1、P2 ピッチ
Claims (9)
- 複数のビルドアップ層を有する多層構造の配線基板であって、
前記ビルドアップ層のうち、最後に形成された表面側のビルドアップ層が第一はんだパッド及び第二はんだパッドを有し、
前記表面側のビルドアップ層の前記表面側にソルダーレジスト層を有し、
前記第一はんだパッド及び前記第二はんだパッドのそれぞれの表面から前記ソルダーレジスト層の表面までの高さが、異なる、
配線基板。 - 前記ソルダーレジスト層は、
前記第一はんだパッドの前記表面及び前記第二はんだパッドの前記表面が前記表面側に露出する開口部を備え、
前記開口部を除いた前記ソルダーレジスト層の前記表面は、略均一な高さとなっている、
請求項1に記載の配線基板。 - 前記表面側のビルドアップ層は、さらに第三はんだパッドを有し、
前記第一はんだパッドと、前記第二はんだパッドと、前記第三はんだパッドとが、等間隔に形成されている、
請求項1または請求項2に記載の配線基板。 - 前記第一はんだパッド及び前記第二はんだパッドは、
前記表面側に略同じ径であり、略同じ形状のはんだボールを備える、
請求項1または請求項2に記載の配線基板。 - 前記第一はんだパッドと前記第二はんだパッドとは、
前記高さの差が、前記はんだボールの前記表面側に接合される半導体チップの高さにより決定されるように構成されている、
請求項4に記載の配線基板。 - 前記第一はんだパッドと前記第二はんだパッドとは、
前記高さの差が、前記はんだボールの前記表面側に接合される半導体チップの実装パッド部の高さにより決定されるように構成されている、
請求項4に記載の配線基板。 - 請求項5に記載の配線基板と、
前記半導体チップと、
を備える、
半導体装置。 - 請求項6に記載の配線基板と、
前記半導体チップと、
前記実装パッド部と、
を備える、
半導体装置。 - 複数のビルドアップ層のうち、最後に形成された表面側のビルドアップ層が第一はんだパッド及び第二はんだパッドを有し、
前記表面側のビルドアップ層の前記表面側にソルダーレジスト層を有し、
前記第一はんだパッド及び前記第二はんだパッドのそれぞれの表面から前記ソルダーレジスト層の表面までの高さが、異なる配線基板の製造方法であって、
少なくとも、
前記表面側のビルドアップ層に配線層と前記第一はんだパッド及び前記第二はんだパッドを形成する工程と、
前記第一はんだパッドの前記表面の一部と前記第二はんだパッドの前記表面の一部とを前記表面側に露出するようにめっきレジスト層を形成する工程と、
銅めっき処理により前記第一はんだパッド及び前記第二はんだパッドの前記表面側に銅を析出させる工程と、
前記めっきレジスト層を剥離する工程と、
前記表面側のビルドアップ層の前記表面側に前記ソルダーレジスト層を形成する工程と、
前記ソルダーレジスト層に前記第一はんだパッドの前記表面の一部と前記第二はんだパッドの前記表面の一部とが前記表面側に露出する開口部を設ける工程と、
を含む、
配線基板の製造方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380035844.7A CN119096351A (zh) | 2022-04-28 | 2023-04-28 | 布线基板、半导体装置以及布线基板的制造方法 |
| KR1020247035124A KR20250006049A (ko) | 2022-04-28 | 2023-04-28 | 배선 기판, 반도체 장치 및 배선 기판의 제조 방법 |
| US18/923,761 US20250070003A1 (en) | 2022-04-28 | 2024-10-23 | Wiring board, semiconductor device, and method for producing wiring board |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-075341 | 2022-04-28 | ||
| JP2022075341A JP7845029B2 (ja) | 2022-04-28 | 2022-04-28 | 配線基板、半導体装置及び配線基板の製造方法 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/923,761 Continuation US20250070003A1 (en) | 2022-04-28 | 2024-10-23 | Wiring board, semiconductor device, and method for producing wiring board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023210815A1 true WO2023210815A1 (ja) | 2023-11-02 |
Family
ID=88518922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/016877 Ceased WO2023210815A1 (ja) | 2022-04-28 | 2023-04-28 | 配線基板、半導体装置及び配線基板の製造方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250070003A1 (ja) |
| JP (1) | JP7845029B2 (ja) |
| KR (1) | KR20250006049A (ja) |
| CN (1) | CN119096351A (ja) |
| TW (1) | TW202410317A (ja) |
| WO (1) | WO2023210815A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025147154A1 (ko) * | 2024-01-03 | 2025-07-10 | 엘지이노텍 주식회사 | 회로 기판 및 이를 포함하는 반도체 패키지 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006046510A1 (ja) * | 2004-10-27 | 2006-05-04 | Ibiden Co., Ltd. | 多層プリント配線板及び多層プリント配線板の製造方法 |
| JP2010287742A (ja) * | 2009-06-11 | 2010-12-24 | Shinko Electric Ind Co Ltd | 配線基板の製造方法 |
| JP2013045938A (ja) * | 2011-08-25 | 2013-03-04 | Kyocer Slc Technologies Corp | 配線基板 |
| JP2015222771A (ja) * | 2014-05-22 | 2015-12-10 | 日本特殊陶業株式会社 | 配線基板、配線基板の製造方法 |
| JP2017228692A (ja) * | 2016-06-23 | 2017-12-28 | 凸版印刷株式会社 | 半導体パッケージ基板およびその製造方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001085558A (ja) | 1999-09-10 | 2001-03-30 | Hitachi Ltd | 半導体装置およびその実装方法 |
| JP4637720B2 (ja) | 2005-10-28 | 2011-02-23 | パナソニック株式会社 | 半導体装置およびその製造方法 |
| JP5493744B2 (ja) | 2009-11-12 | 2014-05-14 | 富士通株式会社 | 光電気混載基板、および、光電気混載基板の製造方法 |
-
2022
- 2022-04-28 JP JP2022075341A patent/JP7845029B2/ja active Active
-
2023
- 2023-04-27 TW TW112115722A patent/TW202410317A/zh unknown
- 2023-04-28 WO PCT/JP2023/016877 patent/WO2023210815A1/ja not_active Ceased
- 2023-04-28 CN CN202380035844.7A patent/CN119096351A/zh active Pending
- 2023-04-28 KR KR1020247035124A patent/KR20250006049A/ko active Pending
-
2024
- 2024-10-23 US US18/923,761 patent/US20250070003A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006046510A1 (ja) * | 2004-10-27 | 2006-05-04 | Ibiden Co., Ltd. | 多層プリント配線板及び多層プリント配線板の製造方法 |
| JP2010287742A (ja) * | 2009-06-11 | 2010-12-24 | Shinko Electric Ind Co Ltd | 配線基板の製造方法 |
| JP2013045938A (ja) * | 2011-08-25 | 2013-03-04 | Kyocer Slc Technologies Corp | 配線基板 |
| JP2015222771A (ja) * | 2014-05-22 | 2015-12-10 | 日本特殊陶業株式会社 | 配線基板、配線基板の製造方法 |
| JP2017228692A (ja) * | 2016-06-23 | 2017-12-28 | 凸版印刷株式会社 | 半導体パッケージ基板およびその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20250006049A (ko) | 2025-01-10 |
| JP2023164038A (ja) | 2023-11-10 |
| JP7845029B2 (ja) | 2026-04-14 |
| CN119096351A (zh) | 2024-12-06 |
| TW202410317A (zh) | 2024-03-01 |
| US20250070003A1 (en) | 2025-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11594478B2 (en) | Wiring substrate, semiconductor package and method of manufacturing wiring substrate | |
| CN100342526C (zh) | 有电性连接垫金属保护层的半导体封装基板结构及其制法 | |
| US20090121351A1 (en) | Process for forming a bump structure and bump structure | |
| US8790504B2 (en) | Method of manufacturing wiring substrate | |
| US7253364B2 (en) | Circuit board having electrically conductive structure formed between circuit layers thereof and method for fabricating the same | |
| KR20080088403A (ko) | 배선 기판의 제조 방법, 반도체 장치의 제조 방법 및 배선기판 | |
| JP2005109496A (ja) | プリ半田構造を形成するための半導体パッケージ基板及びプリ半田構造が形成された半導体パッケージ基板、並びにこれらの製法 | |
| US9622347B2 (en) | Wiring substrate, semiconductor device, method of manufacturing wiring substrate, and method of manufacturing semiconductor device | |
| JP2008004924A (ja) | パッケージ基板製造方法 | |
| KR20170009128A (ko) | 회로 기판 및 그 제조 방법 | |
| KR101022912B1 (ko) | 금속범프를 갖는 인쇄회로기판 및 그 제조방법 | |
| US8061024B2 (en) | Method of fabricating a circuit board and semiconductor package. | |
| US20220148954A1 (en) | Wiring structure and method for manufacturing the same | |
| US11101203B2 (en) | Wiring structure comprising intermediate layer including a plurality of sub-layers | |
| US9699912B2 (en) | Wiring board | |
| US11948899B2 (en) | Semiconductor substrate structure and manufacturing method thereof | |
| US20250070003A1 (en) | Wiring board, semiconductor device, and method for producing wiring board | |
| TW202320276A (zh) | 半導體基板結構及其製造方法 | |
| JP2017228692A (ja) | 半導体パッケージ基板およびその製造方法 | |
| TW201328445A (zh) | 中介層內埋基板結構及其製造方法以及倒裝晶片結構及其製造方法 | |
| US7033917B2 (en) | Packaging substrate without plating bar and a method of forming the same | |
| US11062985B2 (en) | Wiring structure having an intermediate layer between an upper conductive structure and conductive structure | |
| US10431533B2 (en) | Circuit board with constrained solder interconnect pads | |
| US20070186413A1 (en) | Circuit board structure and method for fabricating the same | |
| US12148726B2 (en) | Semiconductor substrate structure, semiconductor structure and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23796547 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380035844.7 Country of ref document: CN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 11202407426S Country of ref document: SG |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 23796547 Country of ref document: EP Kind code of ref document: A1 |