Electronic Module

Abstract

To provide an electronic module that can suppress the occurrence of the cost of design change even when the design is changed.SOLUTION: An electronic module includes: a sealing portion 100; an electronic element 200 sealed in the sealing portion 100; and a terminal portion 30 electrically connected to the electronic element 200 and having facing portions 15 and 25 facing a predetermined surface of the sealing portion 100. The facing portions 15 and 25 are provided with an insertion hole 50 into which an insertion portion 60 is inserted. The sealing portion 100 is provided with groove portions 160 and 170 in which the tip of the insertion portion 60 inserted into the insertion hole 50 is accommodated.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electronic module having an encapsulation and an electronic element encapsulated within the encapsulation. [Background technology]

[0002] A conventional embodiment has been known in which a screw-fastening portion is provided in a resin. As an example, Patent Document 1 discloses a semiconductor device in which one end of a terminal plate in a longitudinal direction is electrically connected to a semiconductor chip, the one end and the semiconductor chip are sealed with a molded resin, and the other end of the terminal plate is protruded from an outer surface of the molded resin, in which a screw-fastening portion for fixing a tip of the other end of the terminal plate in a protruding direction with a screw is formed on a flat first outer surface of the molded resin, and the other end of the terminal plate protrudes substantially perpendicularly from a second outer surface of the molded resin that is adjacent to the first outer surface and faces in a different direction from the first outer surface.

[0003] In such semiconductor devices, there are cases where a customer requests that the position of the terminal board be shifted, for example, by a few millimeters. If a hole is provided in the sealing part and a nut is provided in the hole, even such a slight shift in position requires a design change. Particularly when transfer molding is used (when molding resin is used), a new mold must be created to shift the position of the terminal board in this way, and remaking a mold is extremely expensive. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-69666 A Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above, the present invention provides an electronic module that can suppress the cost of design changes even when the design changes are made. [Means for solving the problem]

[0006] The electronic module according to the invention comprises: A sealing portion; an electronic element sealed in the sealing portion; a terminal portion electrically connected to the electronic element and having an opposing portion facing a predetermined surface of the sealing portion; Equipped with The facing portion is provided with an insertion hole into which the insertion portion is inserted, The sealing portion may be provided with a groove portion for receiving a tip end of the insertion portion inserted into the insertion hole.

[0007] In the electronic module according to the invention, The groove may extend linearly on one surface of the sealing portion.

[0008] In the electronic module according to the invention, The groove may extend from a first end of the one surface to a second end opposite the first end.

[0009] In the electronic module according to the invention, The groove may be within a first distance from the first end or extend from the first end to a second distance from the second end or.

[0010] In the electronic module according to the invention, the terminal portion includes a first terminal portion protruding to the outside from a third end portion of the sealing portion and a second terminal portion protruding to the outside from a fourth end portion of the sealing portion, The groove portion may have a first groove portion in which a tip of an insertion portion inserted into the insertion hole of the first terminal portion is accommodated, and a second groove portion in which a tip of an insertion portion inserted into the insertion hole of the second terminal portion is accommodated.

[0011] In the electronic module according to the invention, The tip end of the terminal portion has a main body and a protrusion provided on the main body, The insertion hole may be provided in the protrusion.

[0012] In the electronic module according to the invention, The sealing portion may be made of a molding resin.

[0013] In the electronic module according to the invention, the terminal portion has a base end portion protruding from a side portion of the sealing portion, an intermediate portion bent from the base end portion and extending from the other side toward the one side, and a tip end portion bent from the intermediate portion and positioned at a position facing the one side surface of the sealing portion, The tip portion may have the opposing portion.

[0014] In the electronic module according to the invention, One of the surfaces on one side and the other side of the sealing portion is smaller than the other, The side surface of the sealing portion may be inclined at an angle of 10 degrees or more with respect to the thickness direction. Effect of the Invention

[0015] A groove portion in which the tip of the insertion portion inserted into the insertion hole is accommodated is provided on a specific surface of the sealing portion, so that even if design changes are made for various reasons, the costs associated with the design changes can be reduced. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view of an electronic module according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of the electronic module according to the first embodiment of the present invention. [Diagram 3] FIG. 3 is a side view of an electronic module according to a first embodiment of the present invention. [Figure 4]FIG. 4 is a diagram showing a process of forming a screw hole in the opposing portion used in the first embodiment of the present invention. [Diagram 5] FIG. 5 is a side cross-sectional view of a facing portion used in the first embodiment of the present invention, viewed along a first direction. [Figure 6] FIG. 6 is a plan view showing the configuration inside the sealing portion of the electronic module according to the first embodiment of the present invention. [Figure 7] FIG. 7 is a side view showing the configuration inside the sealing portion of the electronic module according to the first embodiment of the present invention. [Figure 8] FIG. 8 is a side view of the opposing portion used in the first embodiment of the present invention, viewed along the second direction. [Figure 9] FIG. 9 is a plan view of an electronic module according to another example of the first embodiment of the present invention. [Figure 10] FIG. 10 is a plan view showing a configuration within a sealing portion of an electronic module according to still another example of the first embodiment of the present invention. [Figure 11] FIG. 11 is a side view showing an aspect in which the transverse cross section of the sealing portion is inclined. [Figure 12] FIG. 12 is a plan view of an electronic module according to a second embodiment of the present invention. [Figure 13] FIG. 13 is a plan view of an electronic module according to another example of the second embodiment of the present invention. [Figure 14] FIG. 14 is a plan view of an electronic module according to still another example of the second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] First embodiment "composition" In this embodiment, the in-plane direction of the sealing portion 100 means a plane including the first direction and the second direction in Fig. 2. The up-down direction perpendicular to the plane is the third direction in Fig. 3. In this embodiment, the upper side in Fig. 3 is referred to as one side, and the lower side in Fig. 3 is referred to as the other side.

[0018] As shown in FIGS. 1 to 3, the electronic module according to the present embodiment may include a sealing portion 100, an electronic element 200 (see FIGS. 6 and 7) sealed in the sealing portion 100, and a terminal portion 30 electrically connected to the electronic element 200 and having opposing portions 15, 25 facing a predetermined surface of the sealing portion 100. In the present embodiment, the "predetermined surface" is the surface on one side (upper surface), but is not limited thereto. The opposing portions 15, 25 facing the surface on the one side may be provided with an insertion hole 50 such as a screw hole into which an insertion portion 60 such as a screw is inserted (see FIG. 4), and the sealing portion 100 may be provided with groove portions 160, 170 in which the tip of the insertion portion 60 inserted into the insertion hole 50 is positioned and accommodated (see FIGS. 5 and 8). Note that the insertion hole 50 does not necessarily need to be threaded. The electronic element 200 may be a semiconductor element, and as an example, may be a switching element such as an IGBT or MOSFET. The depth of the grooves 160, 170 is, for example, about 2 to 5 mm, and the size in the width direction (in-plane direction, up and down direction in FIG. 2) is, for example, about 2 to 5 mm. Note that the insertion portion 60 such as a screw is often used in the case of a high current such as 300 A. In that case, the thickness of the facing portions 15, 25 is, for example, about 0.8 mm.

[0019] The grooves 160, 170 may be provided in a rail shape on one surface, or may extend linearly on one surface (the upper surface in FIG. 3) of the sealing unit 100. However, this is not limited thereto, and the grooves 160, 170 may be provided in a serpentine shape on one surface, or may be provided in a circular or square shape. When the grooves 160, 170 extend linearly, they may be rectangular or elliptical in plan view as shown in FIG. 2.

[0020] The grooves 160, 170 may extend from the first end 110 on one side surface toward the second end 120 on the opposite side to the first end 110. In this case, the grooves 160, 170 may extend along a direction (first direction in FIG. 2) perpendicular to the side surface at the first end 110 and / or the second end 120 in a plan view. In the embodiment shown in FIG. 2, the grooves 160, 170 extend along a first direction in the plane of the sealing portion 100, but this is not limited thereto, and the grooves 160, 170 may extend along a second direction in the plane of the sealing portion 100, or may extend in a direction inclined with respect to the first and second directions in the plane of the sealing portion 100.

[0021] 9, the grooves 160, 170 may extend from a position within a first distance D1 from the first end 110 to a position within a second distance D2 from the second end 120. The first distance D1 and the second distance D2 may be in the range of 5 mm to 15 mm, and are more typically in the range of 8 mm to 12 mm. Note that, although it is not uniquely determined because of the relationship with surrounding components and the magnitude of the current flowing, 5 mm may be used as the lower limit of the first distance D1 and the second distance D2 when an insulating distance is to be maintained. The values ​​of the first distance D1 and the second distance D2 may be the same value or different values.

[0022] In this embodiment, the sealing portion 100 has a quadrangular shape in a plan view, with a first end portion 110 and a second end portion 120 forming opposing sides, and a third end portion 130 and a fourth end portion 140 being provided between the first end portion 110 and the second end portion 120. The third end portion 130 and the fourth end portion 140 form opposing sides in a plan view.

[0023] The terminal portion 30 may have a first terminal portion 10 protruding to the outside from a third end portion 130 of the sealing portion 100, and a second terminal portion 20 protruding to the outside from a fourth end portion 140 of the sealing portion 100. The terminal portion 30 may have a third terminal portion 90 having a narrower width than the first terminal portion 10 and the second terminal portion 20. The first terminal portion 10 and the second terminal portion 20 may be formed of a force terminal, a power terminal, or the like capable of supplying a large amount of power, and the third terminal portion 90 may be formed of a sense terminal, a control terminal, or the like for supplying a small amount of power.

[0024] The groove portions 160, 170 may have a first groove portion 160 in which the tip of the insertion portion 60 inserted into the insertion hole 50 of the first terminal portion 10 is positioned and accommodated, and a second groove portion 170 in which the tip of the insertion portion 60 inserted into the insertion hole 50 of the second terminal portion 20 is positioned and accommodated.

[0025] 3, the terminal portion 30 may have a base end portion 11, 21 protruding outward from a side portion of the sealing portion 100, an intermediate portion 12, 22 bent from the base end portion 11, 21 and extending from the other side toward one side, and a tip portion 13, 23 bent from the intermediate portion 12, 22, extending toward one side of the sealing portion 100, and positioned at a position facing the one side of the sealing portion 100. More specifically, the first terminal portion 10 may have a first base end portion 11 protruding outward from a side portion of the sealing portion 100, a first intermediate portion 12 bent from the first base end portion 11 and extending from the other side toward one side, and a first tip portion 13 bent from the first intermediate portion 12, extending toward one side of the sealing portion 100, and positioned at a position facing the one side of the sealing portion 100. The second terminal portion 20 may have a second base end portion 21 protruding outward from the side of the sealing portion 100, a second intermediate portion 22 bent from the second base end portion 21 and extending from the other side toward one side, and a second tip portion 23 bent from the second intermediate portion 22 and extending toward the one side surface of the sealing portion 100 and positioned at a position opposite the one side surface of the sealing portion 100.

[0026] As shown in Fig. 4, the tip portions 13, 23 of the terminal portion 30 may have main body portions 16, 26 and protruding portions 17, 27 provided on the main body portions 16, 26. An insertion hole 50 may be provided in the protruding portions 17, 27. More specifically, the first terminal portion 10 may have a first main body portion 16 and a first protruding portion 17 provided on the first main body portion 16, and the insertion hole 50 may be provided in the first protruding portion 17. Similarly, the second terminal portion 20 may have a second main body portion 26 and a second protruding portion 27 provided on the second main body portion 26, and the insertion hole 50 may be provided in the second protruding portion 27.

[0027] In this embodiment, the tip portions 13, 23 have opposing portions 15, 25 facing each other on one side surface. More specifically, the first tip portion 13 has a first opposing portion 15, and the second tip portion 23 has a second opposing portion 15. An insertion hole 50 is provided in each of the first opposing portion 15 and the second opposing portion 25.

[0028] The sealing portion 100 may be formed by transfer molding and made of molding resin, but is not limited thereto, and the sealing portion 100 may be formed by potting and made of potting resin.

[0029] As shown in FIG. 3, the third terminal portion 90 may have a third base end portion 91 protruding from a side portion of the sealing portion 100, and a third extension portion 92 bent from the third base end portion 91 and extending from the other side toward the one side.

[0030] There may be provided a plurality of any one or more of the first terminal portion 10, the second terminal portion 20, and the third terminal portion 90. In the embodiment shown in Fig. 1 to Fig. 3, one first terminal portion 10, two second terminal portions 20, and nine third terminal portions 90 are provided.

[0031] As shown in Figs. 6, 7 and 10, the electronic module may have a substrate 210, a conductive layer 220 made of copper or the like provided on the substrate 210, and an electronic element 200 provided on the conductive layer 220. In the sealing portion 100, the electronic element 200 and the terminal portion 30 are electrically connected by wiring 250, connectors or the like (see Figs. 6 and 10). In the embodiment shown in Fig. 6, a connector 260 is provided on an electrode on the front surface side (one side) of the electronic element 200, and the connector 260 is connected to the first terminal portion 10. A heat sink 290 made of a copper plate or the like may be provided on the back surface of the substrate 210 (see Fig. 5). In Fig. 10, the tip portions 13 and 23 are not shown.

[0032] "effect" Next, effects of the present embodiment having the above-mentioned configuration that have not yet been described will be described.

[0033] In the embodiment in which the terminal portion 30 having the facing portions 15, 25 facing a predetermined surface of the sealing portion 100 is provided, and the facing portions 15, 25 are provided with the insertion holes 50 into which the insertion portions 60 are inserted, if the sealing portion 100 is provided with the groove portions 160, 170 in which the tip of the insertion portion 60 of a screw or the like inserted into the insertion hole 50 is positioned and accommodated, the cost of the design change can be suppressed even if the design is changed due to various reasons such as a customer's request. That is, in the past, a recess was formed to match the insertion hole, and the tip of the insertion portion of a screw or the like was positioned within the recess. In this embodiment, even if the position of the terminal portion 30 is changed by only a few millimeters due to a customer's request, the position of the recess needs to be changed, but in order to change the position of the recess in this way, the mold needs to be remade. In contrast, according to this embodiment, the grooves 160, 170 are provided in the sealing portion 100, so that when the position of the terminal portion 30 is changed within the range in which the grooves 160, 170 are provided, the tip of the insertion portion 60 of a screw or the like inserted into the insertion hole 50 of the terminal portion 30 after the change is still positioned within the grooves 160, 170 (see FIG. 8). Therefore, there is no need to remake the mold for producing the sealing portion 100, and it is possible to suppress an increase in costs. Note that, since there are many cases in which the position of the terminal portion 30 is changed along the width direction of the terminal portion 30 (the first direction in FIG. 2), this embodiment can effectively deal with such changes that are likely to occur.

[0034] When the sealing portion 100 is formed by transfer molding and is made of molded resin, the effect of this embodiment is further enhanced. The mold used in transfer molding is generally very expensive. Therefore, when a design change is made due to various reasons such as customer requests, a very high additional cost is incurred in the conventional embodiment. In contrast, according to this embodiment, since it is not necessary to remake the mold in the transfer molding, the occurrence of additional costs can be suppressed.

[0035] This embodiment is effective when the terminal portion 30 has base ends 11, 21 protruding from the side of the sealing portion 100, intermediate portions 12, 22 bent from the base ends 11, 21 and extending from the other side toward one side, and tip portions 13, 23 bent from the intermediate portions 12, 22 and extending toward the surface of one side of the sealing portion 100, and the tip portions 13, 23 have opposing portions 15, 25. This is because when such a terminal portion 30 is provided, problems caused by the position of the terminal portion 30 being shifted due to a design change are likely to become apparent.

[0036] If the grooves 160, 170 extend linearly on one side of the sealing portion 100, this is advantageous in that in many cases where the position of the terminal portion 30 is shifted from the linear position due to a design change, there is no need to remake the mold.

[0037] When the grooves 160, 170 extend from a position spaced a first distance D1 from the first end 110 to a position spaced a second distance D2 from the second end 120, the grooves 160, 170 are provided over a wide range between the first end 110 and the second end 120. Therefore, even if a design change is made that shifts the position of the terminal portion 30 toward the first end 110 side or the second end 120 side, the change can be generally accommodated.

[0038] When the terminal portion 30 has a first terminal portion 10 protruding to the outside from a third end 130 of the sealing portion 100 and a second terminal portion 20 protruding to the outside from a fourth end 140 of the sealing portion 100, and the groove portions 160, 170 have a first groove portion 160 in which the tip of the insertion portion 60 inserted into the insertion hole 50 of the first terminal portion 10 is positioned and accommodated, and a second groove portion 170 in which the tip of the insertion portion 60 inserted into the insertion hole 50 of the second terminal portion 20 is positioned and accommodated, it is possible to prevent the occurrence of problems such as the need to remake molds due to design changes for each of the first terminal portion 10 and the second terminal portion 20.

[0039] When the protrusions 17, 27 are provided on the main body 16, 26 of the terminal 30 and the insertion hole 50 is provided in the protrusions 17, 27, the insertion hole 50 can be provided in the thick protrusions 17, 27. When adopting such an embodiment, it is not necessary to install a nut. Therefore, the number of parts can be reduced, and the cost including the processing cost can be reduced. In addition, in this embodiment, the thickness can be made thinner than when a nut is used. FIG. 4 shows an example of an embodiment in which the protrusions 17, 27 and the insertion hole 50 are formed by burring processing. When moving from the left end state of FIG. 4 to the center state, the protrusions 17, 27 are formed on the main body 16, 26. Then, when moving from the center state of FIG. 4 to the right end state, the insertion hole 50 is threaded.

[0040] In addition, the use of such burring is also beneficial in that it makes it possible to appropriately adjust the position of the insertion hole 50 in the longitudinal direction (the second direction in FIG. 2) of the terminal portion 30. When the thickness of the facing portions 15, 25 is about 0.8 mm, the burring process results in the formation of protrusions 17, 27 of about 1.2 mm.

[0041] The size of one side (upper surface) of the sealing portion 100 may be smaller than the size of the other side (lower surface), and conversely, the size of the other side (lower surface) of the sealing portion 100 may be smaller than the size of the one side (upper surface). In this case, as shown in Fig. 11, the side surface of the sealing portion 100 may be inclined at an angle of 10 degrees or more with respect to the thickness direction (third direction) (α may be ≥ 10 degrees). By adopting such an embodiment, it is advantageous in that the sealing portion 100 made of resin can be smoothly extracted from the mold.

[0042] Second embodiment Next, a second embodiment of the present invention will be described.

[0043] In the first embodiment, the grooves 160, 170 extend from a position spaced apart from the first end 110 by the first distance D1 to a position spaced apart from the second end 120 by the second distance D2, but the present invention is not limited to this. As shown in FIG. 12, the grooves 160, 170 may extend from the first end 110 to the second end 120, as shown in FIG. 13, the grooves 160, 170 may extend from the first end 110 to a position spaced apart from the second end 120 by the second distance D2, or as shown in FIG. 14, the grooves 160, 170 may extend from a position spaced apart from the first end 110 by the first distance D1 to the second end 120. The other configurations are the same as those of the first embodiment. In the second embodiment, the same reference numerals are used for the same or similar members as those of the first embodiment, and the description thereof will be omitted.

[0044] With this embodiment as well, even if a design change is required, such as changing the position of the terminal portion 30, there is no need to remake the mold for producing the sealing portion 100, and costs can be prevented from increasing, thereby achieving all of the effects described in the first embodiment.

[0045] The above-mentioned description of each embodiment and the disclosure of the drawings are merely examples for explaining the invention described in the claims, and the above-mentioned description of the embodiment, the description of the modified example, or the disclosure of the drawings do not limit the invention described in the claims. In addition, the description of the claims at the time of filing is merely an example, and the description of the claims may be appropriately changed based on the description of the specification, drawings, etc. [Explanation of symbols]

[0046] 11,21 Proximal end 12,22 Middle section 13,23 Tip 15,25 Opposite part 16,26 Main body 17,27 Convex 50 Insertion hole 60 Insertion section 100 Sealing part 110 First end 120 Second end portion 130 Third end portion 140 Fourth end portion 160 First groove portion 170 Second groove portion 200 Electronic element D1 First distance D2 Second distance

Claims

1. A sealing portion; an electronic element sealed in the sealing portion; a terminal portion electrically connected to the electronic element and having an opposing portion facing a predetermined surface of the sealing portion; Equipped with The facing portion is provided with an insertion hole into which the insertion portion is inserted, the sealing portion is provided with a groove portion in which a tip end of the insertion portion inserted into the insertion hole is accommodated, The groove extends linearly on one surface of the sealing portion from a first end of the one surface to a second end opposite the first end.

2. The electronic module of claim 1 , wherein the groove extends from or within a first distance from the first end to or within a second distance from the second end.

3. the terminal portion includes a first terminal portion protruding to the outside from a third end portion of the sealing portion and a second terminal portion protruding to the outside from a fourth end portion of the sealing portion, 3. The electronic module according to claim 1 or 2, wherein the groove portion has a first groove portion in which a tip of an insertion portion inserted into the insertion hole of the first terminal portion is accommodated, and a second groove portion in which a tip of an insertion portion inserted into the insertion hole of the second terminal portion is accommodated.

4. The tip end of the terminal portion has a main body and a protrusion provided on the main body, The electronic module according to claim 1 , wherein the insertion hole is provided in the protrusion.

5. The electronic module according to claim 1 , wherein the sealing portion is made of a molding resin.

6. the terminal portion has a base end portion protruding from a side portion of the sealing portion, an intermediate portion bent from the base end portion and extending from the other side toward the one side, and a tip end portion bent from the intermediate portion and positioned at a position facing the one side surface of the sealing portion, The electronic module of claim 1 , wherein the tip portion comprises the opposing portion.

7. One of the surfaces on one side and the other side of the sealing portion is smaller than the other, The electronic module according to claim 1 , wherein the side surface of the sealing portion is inclined at an angle of 10 degrees or more with respect to the thickness direction.

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