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WO2007083351A1 - 半導体装置およびその製造方法 - Google Patents

半導体装置およびその製造方法 Download PDF

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Publication number
WO2007083351A1
WO2007083351A1 PCT/JP2006/300542 JP2006300542W WO2007083351A1 WO 2007083351 A1 WO2007083351 A1 WO 2007083351A1 JP 2006300542 W JP2006300542 W JP 2006300542W WO 2007083351 A1 WO2007083351 A1 WO 2007083351A1
Authority
WO
WIPO (PCT)
Prior art keywords
semiconductor device
connection terminal
resin sealing
sealing portion
upper connection
Prior art date
Application number
PCT/JP2006/300542
Other languages
English (en)
French (fr)
Inventor
Junji Tanaka
Junichi Kasai
Kouichi Meguro
Masanori Onodera
Koji Taya
Original Assignee
Spansion Llc
Spansion Japan Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Spansion Llc, Spansion Japan Limited filed Critical Spansion Llc
Priority to JP2007554752A priority Critical patent/JP5192825B2/ja
Priority to PCT/JP2006/300542 priority patent/WO2007083351A1/ja
Priority to US11/654,704 priority patent/US7968990B2/en
Publication of WO2007083351A1 publication Critical patent/WO2007083351A1/ja

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
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    • H01L25/00Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
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    • H01L25/10Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers
    • H01L25/105Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in group H01L27/00
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    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
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Definitions

  • the present invention relates to a semiconductor device and a manufacturing method thereof, and more particularly to a semiconductor device for stacking a plurality of built-in semiconductor devices and a manufacturing method thereof.
  • a semiconductor device used for a portable electronic device such as a mobile phone, a nonvolatile storage medium of an IC memory card, or the like is required to be downsized. Therefore, there is a need for a technology for efficiently packaging semiconductor chips.
  • One of these is the development of a technology for stacking and mounting packages (built-in semiconductor devices) on which semiconductor chips are mounted.
  • a semiconductor device in which a lower semiconductor device 29a and an upper semiconductor device 39, which are built-in semiconductor devices according to Conventional Example 1, are stacked will be described with reference to FIG. 1 and FIG. First, the lower semiconductor device 29a will be described with reference to FIG.
  • a semiconductor chip 20 is mounted on a wiring substrate 10 such as glass epoxy.
  • the semiconductor chip 20 and the pads 15 on the wiring substrate 10 are electrically connected using wires 22.
  • Solder balls 18 a are provided on the side of the semiconductor chip 20 of the wiring substrate 10 via land electrodes 16.
  • the semiconductor chip 20 is sealed by a resin sealing portion 24a made of an epoxy resin.
  • the resin sealing portion 24a is not provided in the region where the solder ball 18a is provided, but is provided in the central portion where the semiconductor chip 20 is mounted.
  • Solder balls 12 are provided on the opposite side of the wiring substrate 10 from the semiconductor chip 20 via land electrodes 14.
  • the land electrode 16 and the solder ball 12 are electrically connected by a connecting portion 17.
  • the solder ball 18 functions as an upper connection terminal for connecting to the upper semiconductor device.
  • the solder ball 12 functions as a lower connection terminal for connecting to a lower semiconductor device or a mother board.
  • an upper semiconductor device 39 has semiconductor chips 40 and 42 stacked and mounted on a wiring board 30.
  • the semiconductor chips 40 and 42 and the wiring board 30 are electrically connected using wires 44 and 46.
  • Semiconductor chips 40 and 42 are resin-sealed parts 48 is sealed. Since the upper semiconductor device 39 does not connect the built-in semiconductor device to the upper portion, the solder balls are not provided on the semiconductor chips 40 and 42 side of the wiring board 30. Therefore, the resin sealing portion 48 is formed on the entire surface of the wiring board 30.
  • a land electrode 34 is provided on the side of the wiring board 30 opposite to the semiconductor chips 40 and 42. The land electrode 34 is connected to the solder ball 18a of the lower semiconductor device 29a. Thereby, the upper semiconductor device 39 and the lower semiconductor device 29a are electrically connected. It should be noted that the connection between the wires 44 and 46 and the land electrode 34 is not shown in the figure.
  • Patent Document 1 discloses a semiconductor device in which a resin sealing portion covers the entire surface of a substrate and upper connection terminals protrude from the resin sealing portion.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-327855
  • the amount of warp caused by heat differs between the stacked lower semiconductor device 29a and the upper semiconductor device 39, and the yield rate decreases.
  • the mold of the resin sealing portion 24 is manufactured in accordance with the size of the semiconductor chip 20 of the lower semiconductor device 29a, the financial time burden is large.
  • the solder balls 18a are exposed, there is a possibility that the solder balls 18a are short-circuited by foreign matter or the like.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a semiconductor device capable of easily aligning stacked semiconductor devices and a method for manufacturing the same.
  • the present invention includes a step of mounting a semiconductor chip on a substrate, a step of forming an upper connection terminal on the side of the substrate on which the semiconductor chip is to be mounted, and an upper surface of the upper connection terminal being exposed.
  • the semiconductor chip and the upper connection terminal are sealed and resin sealed Forming the upper connection terminal, and forming the upper connection terminal so that the upper surface of the upper connection terminal is lower than the upper surface of the resin sealing portion.
  • the step of forming the upper connection terminal may include a step of pressing a convex portion against the upper connection terminal.
  • the upper connection terminal can be formed such that the upper connection terminal is compressed and the upper surface of the upper connection terminal is lower than the upper surface of the resin sealing portion.
  • the step of pressing the convex portion includes the step of disposing the semiconductor chip and the upper connection terminal in a resin to be the resin sealing portion that covers the convex portion, and the resin sealing
  • the step of forming the stopper may include a step of sealing the semiconductor chip and the upper connection terminal with the resin. According to this configuration, the step of pressing and molding the upper connection terminal and the step of forming the resin sealing portion can be performed at the same time, and the manufacturing cost can be reduced.
  • the step of forming the upper connection terminal may include a step of blasting from the upper surface of the upper connection terminal. According to this configuration, the upper connection terminal can be easily formed, and the manufacturing cost can be reduced.
  • the step of mounting the semiconductor chip includes a step of mounting a plurality of semiconductor chips
  • the step of forming the resin sealing portion includes bonding the plurality of semiconductor chips to the one resin sealing. Including a step of sealing at the portion, and a step of cutting the substrate and the resin sealing portion. According to this configuration, the production cost can be reduced.
  • the above configuration may include a step of connecting the upper connection terminal and the lower connection terminal of the upper semiconductor device. According to this configuration, the semiconductor device can be connected to the upper semiconductor device.
  • a configuration may be provided that includes a step of forming an insulating film on the upper connection terminal. According to this configuration, the upper connection terminal and the lower connection of the upper semiconductor device It can suppress that a foreign material adheres to an upper connection terminal before connecting with a terminal.
  • the present invention includes a substrate, a semiconductor chip mounted on the substrate, an upper connection terminal provided on the semiconductor chip side of the substrate, and the upper connection terminal penetrating through the semiconductor chip and the semiconductor chip.
  • a resin sealing portion that seals the upper connection terminal, and the upper surface of the upper connection terminal is a semiconductor device provided lower than the upper surface of the resin sealing portion.
  • the upper surface of the upper connection terminal can be configured to be lower than the upper surface of the resin sealing portion between the upper connection terminals.
  • the lower connection terminal of the upper semiconductor device to be stacked is securely fitted on the upper connection terminal. Therefore, alignment in the case of stacking semiconductor devices can be performed more easily.
  • the resin sealing portion can be configured to be provided on the entire surface of the substrate. According to this configuration, when semiconductor devices are stacked, the warpage of the substrate caused by the difference in thermal expansion coefficient between the substrate and the resin sealing portion can be made substantially the same between the stacked semiconductor devices.
  • a lower connection terminal connected to the semiconductor chip and the upper connection terminal may be provided on the side of the substrate opposite to the semiconductor chip. According to this configuration, it is possible to connect the semiconductor device to the lower substrate or the lower semiconductor device.
  • an insulating film may be provided on the upper connection terminal. According to this configuration, it is possible to prevent foreign matters from adhering to the upper connection terminal.
  • the semiconductor chip may be mounted face up on the substrate.
  • the semiconductor chip may be mounted on the substrate face down.
  • FIG. 1 is a cross-sectional view (No. 1) of a semiconductor device according to Conventional Example 1.
  • FIG. 1 is a cross-sectional view (No. 1) of a semiconductor device according to Conventional Example 1.
  • FIG. 2 is a sectional view (No. 2) of the semiconductor device according to Conventional Example 1.
  • FIG. 3 (a) to FIG. 3 (c) are cross-sectional views (part 1) showing the manufacturing process of the semiconductor device according to the first embodiment.
  • 4 (a) to 4 (c) are cross-sectional views (part 2) illustrating the manufacturing process of the semiconductor device according to the first embodiment.
  • FIG. 5 is a cross-sectional view of the semiconductor device according to Example 1.
  • FIG. 6 is a cross-sectional view showing the manufacturing process of the semiconductor device according to Example 2.
  • FIG. 7 is a cross-sectional view of the semiconductor device according to Example 2.
  • FIG. 8 (a) to FIG. 8 (c) are cross-sectional views (part 1) showing the manufacturing process of the semiconductor device according to Example 3.
  • FIG. 9 (a) and FIG. 9 (b) are cross-sectional views (part 2) illustrating the manufacturing process of the semiconductor device according to the third embodiment.
  • FIG. 10 is a cross-sectional view of the semiconductor device according to Example 4.
  • FIG. 11 is a sectional view of a semiconductor device according to Example 5.
  • FIG. 12 (a) to FIG. 12 (c) are cross-sectional views showing a semiconductor device according to Example 6.
  • Example 1 is an example of a built-in semiconductor device for stacking.
  • a method for manufacturing a semiconductor device according to the first embodiment will be described with reference to FIGS. 3 (a) to 4 (c).
  • the wiring board 10 has a plurality of semiconductor chips mounted in the horizontal direction. In FIGS. 3 (a) to 4 (c), two semiconductor chips 20 are shown for simplicity.
  • land electrodes 16 are formed on a wiring board 10 such as a printed board made of glass epoxy or the like.
  • a solder ball 18 having a height slightly higher than 300 am is formed on the land electrode 16.
  • a semiconductor chip 20 having a thickness of, for example, 100 ⁇ m is mounted on the wiring board 10 using, for example, an adhesive.
  • a mold 50 having a mold part 51 (mold recess) for molding the resin sealing part 24 on the semiconductor chip 20 side of the wiring board 10 is disposed.
  • the metal plate 52 provided with the convex part 54 is arranged on the bottom side of the mold part 51.
  • the depth from the upper surface of the mold 50 to the metal plate 52 is about 300 zm, and the height of the convex portion 54 is about 100 ⁇ m.
  • the convex portion 54 is placed so as to be opposed to the solder ball 18 provided on the wiring board 10.
  • thermosetting epoxy resin 56 is placed in an uncured state on a mold portion 51 of a mold 50. Heat the mold 50 to about 175 degrees to melt the epoxy resin.
  • the wiring board 10 and the mold 50 are brought into contact with each other. At this time, the solder ball 18 and the projection 54 are in contact with each other.
  • the height of the solder ball 18 is higher than 300 ⁇ m, whereas the height from the upper surface of the mold 50 to the upper surface of the convex portion 54 is about 200 ⁇ m. For this reason, the solder ball 18 is pressed against the convex portion 54. Thereby, the solder ball 18 is formed so that the height of the solder ball 18 is lowered.
  • the height of the solder ball 18 is about 200 / im.
  • the epoxy resin 56 is compressed and cured to form the resin sealing portion 24 that seals the semiconductor chip 20 and the solder ball 18.
  • the thickness of the resin sealing portion 24 is about 300 / im.
  • the height of the solder ball 18, the height of the convex portion 54, and the depth from the upper surface of the mold 50 to the metal plate 52 can be selected so that the solder ball 18 has a lower height.
  • the resin sealing portion 24 and the wiring substrate 10 are cut by, for example, a dicing method, and the built-in semiconductor device is completed.
  • FIG. 5 is a cross-sectional view of the built-in semiconductor device according to the first embodiment.
  • the resin sealing portion 24 is formed on the entire surface of the wiring board 10.
  • the upper surface of the solder ball 18 is provided approximately 100 zm deeper than the upper surface of the resin sealing portion 24 as a depth D. That is, the upper surface of the solder ball 18 is provided lower than the upper surface of the resin sealing portion 24.
  • An opening 25 is provided on the solder substrate 18 of the resin sealing portion 24, and the upper surface of the solder ball 18 is exposed. Therefore, the solder ball 18 penetrates the resin sealing portion 24.
  • Other configurations are the same as those in FIG. 1 of the conventional example 1, and the same members are denoted by the same reference numerals and description thereof is omitted.
  • Example 2 is an example in which built-in semiconductor devices according to Example 1 are stacked.
  • Figure 6 shows Example 2. It is a figure which shows the manufacturing method of the semiconductor device which concerns.
  • the built-in semiconductor device according to the first embodiment is used as the lower semiconductor device 29, and the upper semiconductor device 39 according to the conventional example 1 is disposed on the lower semiconductor device 29.
  • the solder balls 32 of the upper semiconductor device 39 are fitted into the openings 25 of the resin sealing portion 24 of the lower semiconductor device 29.
  • the lower semiconductor device 29 and the upper semiconductor device 39 are heated to fuse the solder balls 18 and 32 together. Thereby, the semiconductor device according to Example 2 is completed.
  • FIG. 7 is a cross-sectional view of the semiconductor device according to the second embodiment.
  • the resin sealing portion 24 is formed on the entire surface of the wiring board 10, and the solder ball 19 penetrates the resin sealing portion 24.
  • Other configurations are the same as those in FIG. 2 of the conventional example 1, and the same members are denoted by the same reference numerals and description thereof is omitted.
  • the solder ball 18 (upper connection terminal) provided on the side of the semiconductor chip 20 of the wiring substrate 10 and the solder ball 18 penetrate, and the semiconductor chip 20 and the solder ball And a resin sealing portion 24 for sealing 18.
  • the upper surface of the solder ball 18 is provided lower than the upper surface of the resin sealing portion 24.
  • the solder ball 32 of the upper semiconductor device 39 fits into the opening 25 more easily. Therefore, it is possible to easily align the lower semiconductor device 29 and the upper semiconductor device 39.
  • the resin sealing portion 24 is provided on the entire surface of the wiring board 10.
  • the resin sealing portions 24 and 48 are provided on the entire surface of both the lower semiconductor device 29 and the upper semiconductor device 39. Therefore, the warpage of the wiring boards 10 and 30 due to the difference in thermal expansion coefficient between the wiring boards 10 and 30 and the resin sealing portions 24 and 48 is approximately the same in the lower semiconductor device 29 and the upper semiconductor device 39. Can do. Therefore, it is possible to suppress a decrease in the yield rate due to the warping of the wiring boards 10 and 30.
  • the semiconductor chip of the lower semiconductor device 29 Since there is no need to prepare a mold for the resin sealing portion 24 in accordance with the size of the cup 20, the financial time burden is small. Furthermore, since the solder balls 18 are protected by the resin sealing portion 24, short-circuiting between the solder balls 18 due to foreign matters or the like can be suppressed.
  • solder balls 12 (lower connection terminals) that are connected to the semiconductor chip 20 and the solder balls 18 are provided on the side of the wiring board 10 opposite to the semiconductor chip 20. Thereby, the lower semiconductor device 29 can be connected to the mother board or the lower semiconductor device.
  • the semiconductor chip 20 is mounted on the wiring board 10 as shown in FIG.
  • solder balls 18 are formed on the side on which the semiconductor chip 20 on the wiring substrate 10 is to be mounted.
  • the semiconductor chip 20 and the solder ball 18 are sealed so that the upper surface of the solder ball 18 is exposed to form the resin sealing portion 24.
  • the solder ball 18 is formed so that the upper surface of the solder ball 18 is lower than the upper surface of the resin sealing portion 24.
  • the solder ball 18 is formed by pressing the convex portion 54 against the solder ball 18. As a result, the solder ball 18 can be easily compressed, and the solder ball 18 can be formed such that the upper surface of the solder ball 18 is lower than the upper surface of the resin sealing portion 24.
  • a resin 56 to be the resin sealing portion 24 is provided so as to cover the convex portion 54.
  • the semiconductor chip 20 and the solder ball 18 are immersed in the resin 56.
  • the semiconductor chip 20 and the solder balls 18 are sealed with the resin 56 to form the resin sealing portion 24.
  • the step of pressing and forming the solder ball 18 and the step of forming the resin sealing portion 24 can be performed at the same time, which can reduce the manufacturing cost.
  • a plurality of semiconductor chips 20 are mounted on the wiring board 10, and as shown in FIG. 4 (b), the plurality of semiconductor chips 20 are sealed with one resin. Seal with stopper 24. As shown in FIG. 4C, the wiring board 10 and the resin sealing portion 24 are cut. Through such a process, the mold 50 for molding the resin sealing portion 24 can be used regardless of the size of the semiconductor chip 20. Therefore, even when resin-sealing semiconductor chips with different chip sizes 50 can be shared, and the manufacturing cost can be reduced.
  • Example 3 is an example in which the solder balls 18 of the lower semiconductor device 29 are formed by different manufacturing methods.
  • the same configurations as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and description thereof is omitted.
  • FIG. 8 (a) Force A method for manufacturing a semiconductor device according to Example 3 will be described with reference to FIG. 9 (b). With reference to FIG. 8 (a), the manufacturing method of FIG. 3 (a) and FIG. 3 (b) of Example 1 is performed.
  • a mold 50 having a mold part 51 for molding the resin sealing part 24 is disposed on the side of the semiconductor chip 20 of the wiring board 10. A sheet 53 that is softer than the solder ball 18 is placed.
  • thermosetting epoxy resin 56 is placed in the mold part 51 of the mold 50 in an uncured state.
  • the mold 50 is heated to about 175 degrees to melt the epoxy resin.
  • the wiring board 10 and the mold 50 are brought into contact with each other.
  • the solder ball 18 contacts the sheet 53. Since the sheet 53 is softer than the solder ball 18, the tip of the solder ball 18 is buried in the sheet 53.
  • the epoxy resin 56 is compressed and cured to form a resin sealing portion 24 that seals the semiconductor chip 20 and the solder ball 18.
  • the solder ball 18 Since the tip of the solder ball 18 is caught in the sheet 53, the solder ball 18 penetrates the resin sealing portion 24 and its upper surface is formed higher than the upper surface of the resin sealing portion 24. Referring to FIG. 9B, the resin sealing portion 24 and the solder ball 18 are blasted (sand blasted) from the upper surface. Metals such as solder are more easily removed by blasting than the resin sealing portion 24. For this reason, the solder ball 18 can be formed such that the tip of the solder ball 18 is scraped and the upper surface of the solder ball 18 is lower than the upper surface of the resin sealing portion 24. Thereafter, the resin sealing portion 24 and the wiring board 10 are cut in the same manner as in FIG. 4B of the first embodiment, thereby completing the semiconductor device according to the third embodiment.
  • the solder ball 18 is formed by blasting, the metal plate 52 and the convex portion 54 as in the first embodiment are unnecessary, and the manufacturing cost can be reduced.
  • Embodiment 4 is an example in which the semiconductor chip 20 of the lower semiconductor device 29b is mounted face-down on the wiring board 10.
  • the semiconductor chip 20 is made of, for example, gold or copper
  • the bumps 26 are used to electrically connect to the pads 15 on the wiring board 10.
  • the pad 15 and the land electrode 16 are connected to the land electrode 14 through the connection portion 17.
  • An underfill 28 made of an epoxy resin is provided between the wiring board 10 and the semiconductor chip 20.
  • the semiconductor chip 20 can be flip-chip mounted, that is, face-down mounted on the wiring board 10. Further, as in Examples 1 to 3, the semiconductor chip 20 can be mounted face-up on the wiring board 10.
  • Example 5 is an example of a semiconductor device in which a plurality of built-in semiconductor devices are stacked.
  • the built-in semiconductor devices 69 and 79 are stacked on the lower semiconductor device 29b of Example 4, and the upper semiconductor device 39 of Examples 2 to 4 is stacked thereon. is doing .
  • the semiconductor chip 64 is mounted on the wiring substrate 60, and the semiconductor chip 64 is sealed by the resin sealing portion 66.
  • the built-in semiconductor device 69 is connected to the lower semiconductor device 29b using the solder balls 19.
  • a semiconductor chip 74 is mounted on a wiring board 70, and the semiconductor chip 74 is sealed by a resin sealing portion 76.
  • the built-in semiconductor device 79 is connected to the built-in semiconductor device 69 using solder balls 62.
  • the upper semiconductor device 39 is connected to a built-in semiconductor device 79 using solder balls 72.
  • the configurations of the lower semiconductor device 29b and the upper semiconductor device 39 are the same as those of the fourth embodiment and the second embodiment, respectively, and the same members are denoted by the same reference numerals and description thereof is omitted.
  • Example 6 is an example when the semiconductor device according to Example 1 is transported.
  • the test needle 82 is brought into contact with the solder ball 18 of the semiconductor device 29 according to the first embodiment through the opening 25 formed in the resin sealing portion 24, and the characteristics of the semiconductor device 29 are thus measured. test. afterwards Then, an insulating film is formed in the opening 25 on the solder ball 18.
  • the insulating film 80a may be formed only in the opening 25 as shown in FIG. 12 (b), or the insulating film 80b may be formed on the opening 25 and the resin sealing portion 24 as shown in FIG. 12 (c). It may be formed.
  • the semiconductor device can be transported and stored in a state where the opening 25 is closed with the insulating films 80a and 80b.
  • the insulating films 80a and 80b are removed before the upper semiconductor device 39 is connected to the lower semiconductor device 29. Thereby, it is possible to prevent foreign matters from adhering to the solder balls 18 when the semiconductor device 29 is transported and stored.
  • polyimide is used for the insulating films 80a and 80b.
  • the resin sealing portion 24 made of epoxy resin is not removed, and the insulating films 80a and 80b can be removed.
  • the wiring board 10 made of a printed circuit board has been described as an example. If the substrate has a conductor land electrode, a wiring pattern such as a pad or wiring, etc. formed on an insulating substrate, it is acceptable.
  • the solder balls 18 and 12 are described as examples for the upper and lower connection terminals, respectively.
  • the solder for example, lead-tin (PbSn) solder, lead-free solder (SnAgCu, etc.), tin-zinc (SnZn) solder, etc. can be used. Even if it is a metal other than solder, bumps made of metal such as Au or Cu can be used.
  • the upper connection terminal and the lower connection terminal may be any protruding conductor having a function of electrically connecting the lower semiconductor device 29 and the upper semiconductor device 39 or the mother board.

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Abstract

 本発明は、基板(10)と、基板(10)に搭載された半導体チップ(20)と、基板(10)の半導体チップ(20)の側に設けられた上部接続端子(18)と、上部接続端子(18)が貫通し、半導体チップ(20)および上部接続端子(18)を封止する樹脂封止部(24)と、を有し、上部接続端子(18)の上面は樹脂封止部(24)の上面より低く設けられた半導体装置であり、その半導体装置を積層した。半導体装置を積層下半導体装置およびその製造方法である。

Description

明 細 書
半導体装置およびその製造方法
技術分野
[0001] 本発明は半導体装置およびその製造方法に関し、特に内蔵半導体装置を複数積 層するための半導体装置およびその製造方法に関する。
背景技術
[0002] 近年、例えば、移動体電話機のような携帯型電子機器や ICメモリカードの不揮発 性記憶媒体等に用いられる半導体装置はその小型化が求められている。そこで、半 導体チップを効率的にパッケージングする技術が求められている。その 1つとして、 半導体チップを搭載したパッケージ (内蔵半導体装置)を積層し実装する技術が開 発されている。
[0003] 図 1および図 2を用い、従来例 1に係る内蔵半導体装置である下部半導体装置 29a と上部半導体装置 39とが積層された半導体装置について説明する。まず、図 1を参 照に下部半導体装置 29aについて説明する。ガラスエポキシ等の配線基板 10上に 半導体チップ 20が搭載されている。半導体チップ 20と配線基板 10上のパッド 15と はワイヤ 22を用い電気的に接続されている。配線基板 10の半導体チップ 20の側に ランド電極 16を介し半田ボール 18aが設けられている。半導体チップ 20はエポキシ 樹脂からなる樹脂封止部 24aにより封止されている。樹脂封止部 24aは、半田ボール 18aが設けられた領域には設けられておらず、半導体チップ 20が搭載された中央部 に設けられている。配線基板 10の半導体チップ 20と反対の側にはランド電極 14を 介し半田ボール 12が設けられている。ランド電極 16と半田ボール 12とは接続部 17 により電気的に接続されている。半田ボール 18は上部の半導体装置と接続するため の上部接続端子として機能する。半田ボール 12は下部の半導体装置またはマザ一 ボードと接続するための下部接続端子として機能する。
[0004] 図 2を参照に、上部半導体装置 39は配線基板 30上に半導体チップ 40および 42 が積層され搭載されている。半導体チップ 40および 42と配線基板 30とはワイヤ 44 および 46を用い電気的に接続されている。半導体チップ 40および 42は樹脂封止部 48により封止されている。上部半導体装置 39は上部に内蔵半導体装置を接続しな いため、配線基板 30の半導体チップ 40および 42側には半田ボールは設けられてい なレ、。このため、樹脂封止部 48は配線基板 30上の全面に形成されている。配線基 板 30の半導体チップ 40および 42と反対の側にはランド電極 34が設けられている。ラ ンド電極 34には下部半導体装置 29aの半田ボール 18aが接続される。これにより、 上部半導体装置 39と下部半導体装置 29aとが電気的に接続される。なお、ワイヤ 44 および 46とランド電極 34とを接続する接続部につレ、ては図示してレヽなレ、。
[0005] 特許文献 1には、樹脂封止部が基板の全面を覆い、上部接続端子が樹脂封止部 より突出した半導体装置が開示されている。
特許文献 1 :特開 2004— 327855号公報
発明の開示
発明が解決しょうとする課題
[0006] 従来例 1に係る半導体装置においては、積層した下部半導体装置 29aと上部半導 体装置 39とでは熱起因の反り量が異なり、良品率が低下してしまう。また、下部半導 体装置 29aの半導体チップ 20の大きさに合わせ樹脂封止部 24の金型を作製するた め、金銭的時間的負担が大きい。さらに、半田ボール 18aが露出しているため、異物 等により半田ボール 18a間がショートする可能性がある。
[0007] 特許文献 1によれば、これらの課題を改善することができる。し力 ながら、下部半 導体装置 29aと上部半導体装置 39とを半田ボール 18aを用い接続するためには、 下部半導体装置 29aと上部半導体装置 39とを位置合わせする。このため、例えば冶 具を用いる等により位置合わせを行うため、製造コストが増大する。
[0008] 本発明は上記課題に鑑みなされたものであり、積層される内蔵半導体装置の位置 合わせを容易に行うことが可能な半導体装置およびその製造方法を提供することを 目的とする。
課題を解決するための手段
[0009] 本発明は、基板上に半導体チップを搭載する工程と、前記基板の前記半導体チッ プの搭載されるべき側に上部接続端子を形成する工程と、前記上部接続端子の上 面が露出するように、前記半導体チップおよび前記上部接続端子を封止し樹脂封止 部を形成する工程と、前記上部接続端子の上面が前記樹脂封止部の上面より低くな るように前記上部接続端子を成形する工程と、を有する半導体装置の製造方法であ る。本発明によれば、半導体装置を積層させる場合に、上部接続端子の上に、積層 する上部の半導体装置の下部接続端子が嵌り込む。よって、半導体装置を積層する 場合の位置合わせを容易に行うことができる。
[0010] 上記構成において、前記上部接続端子を成形する工程は、前記上部接続端子に 凸部を押圧する工程を含む構成とすることができる。この構成によれば、上部接続端 子を圧縮させ、上部接続端子の上面が樹脂封止部の上面より低くなるように上部接 続端子を成形することができる。
[0011] 上記構成において、前記凸部を押圧する工程は、前記凸部を覆う前記樹脂封止部 になるべき樹脂中に前記半導体チップおよび前記上部接続端子を配置する工程を 含み、前記樹脂封止部を形成する工程は、前記樹脂で前記半導体チップおよび前 記上部接続端子を封止する工程を含む構成とすることができる。この構成によれば、 上部接続端子を押圧し成形する工程と樹脂封止部を形成する工程とを同時に行うこ とができ、製造コストを削減することができる。
[0012] 上記構成において、前記上部接続端子を成形する工程は、前記上部接続端子の 上面からブラスト処理する工程を含む構成とすることができる。この構成によれば、上 部接続端子を簡単に成形することができ、製造コストを削減することができる。
[0013] 上記構成において、半導体チップを搭載する工程は複数の半導体チップを搭載す る工程を含み、前記樹脂封止部を形成する工程は、前記複数の半導体チップを 1つ の前記樹脂封止部で封止する工程を含み、前記基板および前記樹脂封止部を切断 する工程を有する構成とすることができる。この構成によれば、製造コストを削減する こと力 sできる。
[0014] 上記構成において、前記上部接続端子と上部半導体装置の下部接続端子とを接 続する工程を有する構成とすることができる。この構成によれば、半導体装置を上部 半導体装置と接続させることができる。
[0015] 上記構成において、前記上部接続端子上に絶縁膜を形成する工程を有する構成 とすることができる。この構成によれば、上部接続端子と上部半導体装置の下部接続 端子とを接続する前に上部接続端子に異物が付着することを抑制することができる。
[0016] 本発明は、基板と、基板に搭載された半導体チップと、前記基板の前記半導体チッ プの側に設けられた上部接続端子と、前記上部接続端子が貫通し、前記半導体チッ プおよび前記上部接続端子を封止する樹脂封止部と、を具備し、前記上部接続端 子の上面は前記樹脂封止部の上面より低く設けられた半導体装置である。本発明に よれば、半導体装置を積層させる場合に、上部接続端子の上に、積層する上部の半 導体装置の下部接続端子が嵌り込む。よって、半導体装置を積層する場合の位置 合わせを容易に行うことができる。
[0017] 上記構成によれば、前記上部接続端子の上面は前記上部接続端子間の前記樹脂 封止部の上面よりも低く設けられた構成とすることができる。上部接続端子の上に、 積層する上部の半導体装置の下部接続端子が確実に嵌り込む。よって、半導体装 置を積層する場合の位置合わせをより容易に行うことができる。
[0018] 上記構成において、前記樹脂封止部は前記基板の全面に設けられた構成とするこ と力 Sできる。この構成によれば、半導体装置を積層した場合、基板と樹脂封止部との 熱膨張係数の差に起因した基板の反りを積層した半導体装置間で略同じとすること ができる。
[0019] 上記構成において、前記基板の前記半導体チップと反対の側に前記半導体チッ プおよび前記上部接続端子と接続する下部接続端子を具備する構成とすることがで きる。この構成によれば、半導体装置を下の基板または下の半導体装置と接続させ ること力 Sできる。
[0020] 上記構成において、前記上部接続端子上に絶縁膜を具備する構成とすることがで きる。この構成によれば、上部接続端子に異物が付着することを抑制することができ る。
[0021] 上記構成において、前記半導体チップは前記基板にフェースアップ実装されてい る構成とすることができる。また上記構成において、前記半導体チップは前記基板に フェースダウン実装されてレ、る構成とすることができる。
発明の効果
[0022] 本発明によれば、積層される内蔵半導体装置の位置合わせを容易に行うことが可 能な半導体装置およびその製造方法を提供することができる。
図面の簡単な説明
[0023] [図 1]図 1は従来例 1に係る半導体装置の断面図(その 1 )である。
[図 2]図 2は従来例 1に係る半導体装置の断面図(その 2)である。
[図 3]図 3 (a)から図 3 (c)は実施例 1に係る半導体装置の製造工程を示す断面図(そ の 1)である。
[図 4]図 4 (a)から図 4 (c)は実施例 1に係る半導体装置の製造工程を示す断面図(そ の 2)である。
[図 5]図 5は実施例 1に係る半導体装置の断面図である。
[図 6]図 6は実施例 2に係る半導体装置の製造工程を示す断面図である。
[図 7]図 7は実施例 2に係る半導体装置の断面図である。
[図 8]図 8 (a)から図 8 (c)は実施例 3に係る半導体装置の製造工程を示す断面図(そ の 1)である。
[図 9]図 9 (a)および図 9 (b)は実施例 3に係る半導体装置の製造工程を示す断面図( その 2)である。
[図 10]図 10は実施例 4に係る半導体装置の断面図である。
[図 11]図 11は実施例 5に係る半導体装置の断面図である。
[図 12]図 12 (a)から図 12 (c)は実施例 6に係る半導体装置を示す断面図である。 発明を実施するための最良の形態
[0024] 以下、図面を用い本発明に係る実施例について説明する。
実施例 1
[0025] 実施例 1は積層するための内蔵半導体装置の例である。図 3 (a)から図 4 (c)を用い 、実施例 1に係る半導体装置の製造方法について説明する。配線基板 10は横方向 に複数の半導体チップが搭載されている。図 3 (a)から図 4 (c)では、簡単のため半導 体チップ 20を 2つ図示した。図 3 (a)を参照に、ガラスエポキシ等からなるプリント基板 等の配線基板 10にランド電極 16を形成する。ランド電極 16に高さが 300 a mよりや や高い半田ボール 18を形成する。図 3 (b)を参照に、配線基板 10に例えば厚さ 100 μ mの半導体チップ 20を例えば接着剤を用い搭載する。半導体チップ 20と配線基 板 10のパッド 15とをワイヤ 22を用い電気的に接続する。図 3 (c)を参照に、配線基 板 10の半導体チップ 20側に樹脂封止部 24を成型するための型部 51 (金型の凹部) を有する金型 50を配置する。凸部 54が設けられた金属板 52を型部 51の底辺に配 置する。ここで、金型 50の上面から金属板 52までの深さは約 300 z m、凸部 54の高 さは約 100 μ mである。凸部 54は配線基板 10に設けられた半田ボール 18に相対す るように酉己置される。
[0026] 図 4 (a)を参照に、金型 50の型部 51に熱硬化性のエポキシ樹脂 56を未硬化状態 で配置する。金型 50を約 175度に加熱し、エポキシ樹脂を溶融させる。図 4 (b)を参 照に、配線基板 10と金型 50とを当接させる。このとき、半田ボール 18と凸部 54とが 接する。半田ボール 18の高さは 300 x mより高いのに対し、金型 50の上面から凸部 54の上面までの高さは約 200 x mである。このため、半田ボール 18は凸部 54に押 圧される。これにより、半田ボール 18の高さが低くなるように半田ボール 18が成形さ れる。この結果、半田ボール 18の高さは約 200 /i mとなる。エポキシ樹脂 56は圧縮 加工され硬化し半導体チップ 20および半田ボール 18を封止する樹脂封止部 24が 形成される。樹脂封止部 24の厚さは約 300 /i mとなる。半田ボール 18の高さ、凸部 54の高さ、金型 50の上面から金属板 52までの深さは、半田ボール 18が半田ボール 18の高さが低くなるように選択することもできる。図 4 (c)を参照に、金型 50を外す。 樹脂封止部 24および配線基板 10を例えばダイシング法により切断し、内蔵半導体 装置が完成する。
[0027] 図 5は実施例 1に係る内蔵半導体装置の断面図である。従来例 1の図 1に比べ、榭 脂封止部 24は配線基板 10上全面に形成されている。半田ボール 18の上面は樹脂 封止部 24の上面より深さ Dとして約 100 z m深く設けられる。つまり、半田ボール 18 の上面は樹脂封止部 24の上面より低く設けられている。樹脂封止部 24の半田ボー ノレ 18上には開口部 25が設けられており、半田ボール 18の上面は露出している。よ つて、半田ボール 18は樹脂封止部 24を貫通している。その他の構成は従来例 1の 図 1と同じであり、同じ部材は同じ符号を付し説明を省略する。
実施例 2
[0028] 実施例 2は実施例 1に係る内蔵半導体装置を積層した例である。図 6は実施例 2に 係る半導体装置の製造方法を示す図である。実施例 1に係る内蔵半導体装置を下 部半導体装置 29として、従来例 1の上部半導体装置 39を下部半導体装置 29の上 に配置する。このとき、下部半導体装置 29の樹脂封止部 24の開口部 25に、上部半 導体装置 39の半田ボール 32が嵌る。その後、下部半導体装置 29および上部半導 体装置 39を高温にし、半田ボール 18および 32を融合させる。これにより、実施例 2 に係る半導体装置が完成する。
[0029] 図 7は実施例 2に係る半導体装置の断面図である。従来例 1の図 2に対し、樹脂封 止部 24は配線基板 10上全面に形成されており、半田ボール 19は樹脂封止部 24を 貫通している。その他の構成は従来例 1の図 2と同じであり、同じ部材は同じ符号を 付し説明を省略する。
[0030] 実施例 1に係る半導体装置によれば、配線基板 10の半導体チップ 20の側に設け られた半田ボール 18 (上部接続端子)と、半田ボール 18が貫通し、半導体チップ 20 および半田ボール 18を封止する樹脂封止部 24と、を有している。そして、半田ボー ル 18の上面は樹脂封止部 24の上面より低く設けられている。これにより、実施例 2の 図 6のように、下部半導体装置 29の半田ボール 18と上部半導体装置 39の半田ボー ル 32とを接続する際、半田ボール 18上の樹脂封止部 24の開口部 25に上部半導体 装置 39の半田ボール 32が嵌り込む。よって、下部半導体装置 29と上部半導体装置 39との位置合わせを容易に行うことができる。
[0031] また、半田ボール 18の上面は半田ボール 18間の樹脂封止部 24の上面よりも低い ことにより、上部半導体装置 39の半田ボール 32がより容易に開口部 25に嵌り込む。 よって、下部半導体装置 29と上部半導体装置 39との位置合わせを一層容易に行う こと力 Sできる。
[0032] さらに、樹脂封止部 24は配線基板 10上の全面に設けられている。これにより、上部 半導体装置 39と積層した場合、下部半導体装置 29と上部半導体装置 39とも全面に 樹脂封止部 24、 48が設けられている。よって、配線基板 10、 30と樹脂封止部 24、 4 8の熱膨張係数の差に起因した配線基板 10、 30の反りを下部半導体装置 29と上部 半導体装置 39とで、略同じとすることができる。よって、配線基板 10、 30の反りに起 因した良品率の低下を抑制することができる。また、下部半導体装置 29の半導体チ ップ 20の大きさに合わせ樹脂封止部 24の金型を作製する必要がないため、金銭的 時間的負担が小さい。さらに、半田ボール 18が樹脂封止部 24により保護されるため 、異物等により半田ボール 18間のショートを抑制することができる。
[0033] さらに、配線基板 10の半導体チップ 20と反対の側に半導体チップ 20および半田 ボール 18と接続する半田ボール 12 (下部接続端子)が設けられている。これにより、 下部半導体装置 29をマザ一ボードや下の半導体装置に接続させることができる。
[0034] 実施例 1に係る半導体装置の製造方法によれば、図 3 (b)のように、配線基板 10上 に半導体チップ 20を搭載する。図 3 (a)のように、配線基板 10上の半導体チップ 20 が搭載されるべき側に半田ボール 18を形成する。図 4 (b)のように、半田ボール 18の 上面が露出するように、半導体チップ 20および半田ボール 18を封止し樹脂封止部 2 4を形成する。また、半田ボール 18の上面が樹脂封止部 24の上面より低くなるように 半田ボール 18を成形する。これにより、実施例 2の図 6のように、下部半導体装置 29 と上部半導体装置 39との位置合わせを容易に行うことができる。
[0035] また、図 4 (b)のように、半田ボール 18に凸部 54を押圧することにより、半田ボール 18を成形している。これにより、簡単に、半田ボール 18を圧縮させ、半田ボール 18 の上面が樹脂封止部 24の上面より低くなるように半田ボール 18を成形することがで きる。
[0036] さらに、図 4 (a)のように、凸部 54を覆うように樹脂封止部 24になるべき樹脂 56を設 ける。凸部 54で半田ボール 18を押圧する際に、樹脂 56に半導体チップ 20および半 田ボール 18を浸漬させる。図 4 (b)のように、樹脂 56で半導体チップ 20および半田 ボール 18を封止し樹脂封止部 24を形成する。これにより、半田ボール 18を押圧し成 形する工程と樹脂封止部 24を形成する工程を同時に行うことができ、製造コストを削 減すること力 Sできる。
[0037] さらに、図 3 (b)のように、配線基板 10には複数の半導体チップ 20が搭載されてお り、図 4 (b)のように、複数の半導体チップ 20を 1つの樹脂封止部 24で封止する。図 4 (c)のように、配線基板 10および樹脂封止部 24を切断する。このような工程により、 樹脂封止部 24を成型するための金型 50は半導体チップ 20の大きさによらず用いる こと力 Sできる。よって、チップサイズの異なる半導体チップを樹脂封止する場合も金型 50を共用することができ、製造コストを削減することができる。
実施例 3
[0038] 実施例 3は下部半導体装置 29の半田ボール 18を異なる製造方法で形成する例で ある。実施例 1および実施例 2と同じ構成は同じ符号を付し説明を省略する。図 8 (a) 力 図 9 (b)を用い実施例 3に係る半導体装置の製造方法について説明する。図 8 (a )を参照に、実施例 1の図 3 (a)および図 3 (b)の製造方法を行う。図 8 (b)を参照に、 配線基板 10の半導体チップ 20側に樹脂封止部 24を成型するための型部 51を有す る金型 50を配置する。半田ボール 18より柔らかいシート 53を配置する。金型 50の型 部 51に熱硬化性のエポキシ樹脂 56を未硬化状態で配置する。金型 50を約 175度 に加熱し、エポキシ樹脂を溶融させる。図 8 (c)を参照に、配線基板 10と金型 50とを 当接させる。このとき、半田ボール 18はシート 53に接する。シート 53は半田ボール 1 8より柔らかいため、半田ボール 18の先端はシート 53に埋没する。エポキシ樹脂 56 は圧縮カ卩ェされ硬化し半導体チップ 20および半田ボール 18を封止する樹脂封止部 24が形成される。
[0039] 図 9 (a)を参照に、金型 50を外す。樹脂封止部 24が配線基板 10上に形成される。
半田ボール 18の先端がシート 53に坦め込まれてレ、たため、半田ボール 18は樹脂封 止部 24を貫通しその上面が樹脂封止部 24の上面より高く形成される。図 9 (b)を参 照に、樹脂封止部 24および半田ボール 18を上面よりブラスト処理(サンドブラスト処 理)する。半田等の金属は樹脂封止部 24よりブラスト処理により削れ易い。このため、 半田ボール 18の先端部が削れ、半田ボール 18の上面が樹脂封止部 24の上面より 低くなるように半田ボール 18を成形することができる。その後、実施例 1の図 4 (b)と 同様に樹脂封止部 24および配線基板 10を切断することにより実施例 3に係る半導 体装置が完成する。
[0040] 実施例 3によれば、ブラスト処理により半田ボール 18を成形するため、実施例 1のよ うな金属板 52および凸部 54が不要であり、製造コストを削減することができる。
実施例 4
[0041] 実施例 4は下部半導体装置 29bの半導体チップ 20を配線基板 10にフェースダウ ン実装した例である。図 10を参照に、半導体チップ 20が例えば金または銅からなる バンプ 26を用い配線基板 10上のパッド 15と電気的に接続している。図 7と同様に、 パッド 15およびランド電極 16はランド電極 14と接続部 17で接続している。配線基板 10と半導体チップ 20との間には、エポキシ樹脂からなるアンダーフィル 28が設けら れている。その他の構成は実施例 2の図 7と同じであり、同じ部材は同じ符号を付し 説明を省略する。
[0042] 実施例 4のように、半導体チップ 20を配線基板 10にフリップチップ実装、つまりフエ ースダウン実装することができる。また、実施例 1から 3のように、半導体チップ 20を配 線基板 10にフェースアップ実装することができる。
実施例 5
[0043] 実施例 5は内蔵半導体装置を複数積層した半導体装置の例である。図 11を参照 に、実施例 5に係る半導体装置は実施例 4の下部半導体装置 29b上に、内蔵半導体 装置 69、 79を積層し、その上に実施例 2から 4の上部半導体装置 39を積層している 。内蔵半導体装置 69は配線基板 60に半導体チップ 64が搭載され、半導体チップ 6 4が樹脂封止部 66により封止されている。内蔵半導体装置 69は半田ボール 19を用 い下部半導体装置 29bに接続される。内蔵半導体装置 79は配線基板 70に半導体 チップ 74が搭載され、半導体チップ 74が樹脂封止部 76により封止されている。内蔵 半導体装置 79は半田ボール 62を用い内蔵半導体装置 69に接続される。上部半導 体装置 39は半田ボール 72を用い内蔵半導体装置 79に接続される。下部半導体装 置 29bおよび上部半導体装置 39の構成はそれぞれ実施例 4および実施例 2と同じ であり同じ部材は同じ符号を付し説明を省略する。
[0044] 内蔵半導体装置 69、 79は実施例 1または実施例 3と同様に作製され、下部半導体 装置 29b、内蔵半導体装置 69、 79および上部半導体装置 39の接続は実施例 2と同 じ方法で行われる。このように、内蔵半導体装置を 3以上複数積層させることもできる 実施例 6
[0045] 実施例 6は実施例 1に係る半導体装置を搬送する際の例である。図 12 (a)を参照 に、実施例 1に係る半導体装置 29の半田ボール 18に樹脂封止部 24に形成された 開口部 25を介し試験用針 82を接触させ、半導体装置 29の特性を試験する。その後 、半田ボール 18上の開口部 25に絶縁膜を形成する。図 12 (b)のように、絶縁膜 80a を開口部 25にのみ形成しても良いし、図 12 (c)のように、絶縁膜 80bを開口部 25お よび樹脂封止部 24上に形成しても良い。
[0046] 実施例 6のように、開口部 25を絶縁膜 80a、 80bで塞いた状態で半導体装置を搬 送、保管することができる。実施例 2および 3のように、下部半導体装置 29に上部半 導体装置 39を接続させる前に絶縁膜 80a、 80bを除去する。これにより、半導体装置 29の搬送、保管時に半田ボール 18に異物が付着することを抑制することができる。 絶縁膜 80aおよび 80bとして例えばポリイミドを用いる。これにより、絶縁膜 80aおよび 80bを例えばシクロへキサノンを用いてエッチングすればエポキシ樹脂からなる樹脂 封止部 24は除去されず絶縁膜 80a、 80bを除去することができる。
[0047] 実施例 1から 6において、基板としてプリント基板からなる配線基板 10を例に説明し た。基板は絶縁体の基体に導電体のランド電極、パッドまたは配線等の配線パター ンが形成されてレ、れば良レ、。上部接続端子および下部接続端子としてそれぞれ半 田ボール 18および 12を例に説明した。半田としては、例えば鉛錫(PbSn)半田、鉛 フリー半田(SnAgCu等)、錫亜鉛(SnZn)半田等を用いることができる。半田以外の 金属であっても、例えば Auや Cu等の金属ならなるバンプを用いることもできる。この ように、上部接続端子および下部接続端子は下部半導体装置 29と上部半導体装置 39またはマザ一ボードとを電気的に接続する機能を有する突起状の導体であれば 良い。
[0048] 以上、本発明の好ましい実施例について詳述したが、本発明は係る特定の実施例 に限定されるものではなぐ特許請求の範囲に記載された本発明の要旨の範囲内に おいて、種々の変形 ·変更が可能である。

Claims

請求の範囲
[1] 基板上に半導体チップを搭載する工程と、
前記基板の前記半導体チップの搭載されるべき側に上部接続端子を形成するェ 程と、
前記上部接続端子の上面が露出するように、前記半導体チップおよび前記上部接 続端子を封止し樹脂封止部を形成する工程と、
前記上部接続端子の上面が前記樹脂封止部の上面より低くなるように前記上部接 続端子を成形する工程と、を有する半導体装置の製造方法。
[2] 前記上部接続端子を成形する工程は、前記上部接続端子に凸部を押圧する工程 を含む請求項 1記載の半導体装置の製造方法。
[3] 前記凸部を押圧する工程は、前記凸部を覆う前記樹脂封止部になるべき樹脂中に 前記半導体チップおよび前記上部接続端子を配置する工程を含み、
前記樹脂封止部を形成する工程は、前記樹脂で前記半導体チップおよび前記上 部接続端子を封止する工程を含む請求項 2記載の半導体装置の製造方法。
[4] 前記上部接続端子を成形する工程は、前記上部接続端子の上面からブラスト処理 する工程を含む請求項 1記載の半導体装置の製造方法。
[5] 半導体チップを搭載する工程は複数の半導体チップを搭載する工程を含み、 前記樹脂封止部を形成する工程は、前記複数の半導体チップを 1つの前記樹脂封 止部で封止する工程を含み、
前記基板および前記樹脂封止部を切断する工程を有する請求項 1から 4のいずれ か一項記載の半導体装置の製造方法。
[6] 前記上部接続端子と上部半導体装置の下部接続端子とを接続する工程を有する 請求項 1から 5のいずれか一項記載の半導体装置の製造方法。
[7] 前記上部接続端子上に絶縁膜を形成する工程を有する請求項 6記載の半導体装 置の製造方法。
[8] 基板と、
基板に搭載された半導体チップと、
前記基板の前記半導体チップの側に設けられた上部接続端子と、 前記上部接続端子が貫通し、前記半導体チップおよび前記上部接続端子を封止 する樹脂封止部と、を具備し、
前記上部接続端子の上面は前記樹脂封止部の上面より低く設けられた半導体装 置。
[9] 前記上部接続端子の上面は前記上部接続端子間の前記樹脂封止部の上面よりも 低く設けられた請求項 8記載の半導体装置。
[10] 前記樹脂封止部は前記基板の全面に設けられた請求項 8または 9記載の半導体 装置。
[11] 前記基板の前記半導体チップと反対の側に前記半導体チップおよび前記上部接 続端子と接続する下部接続端子を具備する請求項 8から 10のいずれか一項記載の 半導体装置。
[12] 前記上部接続端子上に絶縁膜を具備する請求項 8から 11のいずれか一項記載の 半導体装置。
[13] 前記半導体チップは前記基板にフェースアップ実装されている請求項 8から 12の いずれか一項記載の半導体装置。
[14] 前記半導体チップは前記基板にフェースダウン実装されている請求項 8から 12の いずれか一項記載の半導体装置。
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