JP6099135B2 - Electronic device, mounting board, and manufacturing method of mounting board - Google Patents

Description

  The present invention relates to an electronic device, a mounting board, and a manufacturing method of the mounting board.

  In recent years, as electronic devices are miniaturized, a technique for mounting electronic components on a mounting board in a compact manner has become important. Patent Document 1 discloses a technique for mounting a transformer on a mounting board. In the technique disclosed in Patent Document 1, a lead terminal of a transformer is inserted into a hole formed in a mounting substrate and soldered to a conductive portion on the back surface of the mounting substrate. Between the transformer and the mounting substrate, there is provided a pedestal made of an insulating material having an insertion hole through which each lead terminal is inserted and receiving the load of the transformer.

JP 2007-258484 A

  Patent Document 1 discloses a technique for mounting a transformer (electronic component) on a mounting board. However, when the electronic component mounted on the mounting substrate is an electronic component that is used at a high voltage, it is necessary to ensure a sufficient creepage distance between the terminals in order to ensure insulation between the terminals. For this reason, there has been a problem that it is difficult to compactly mount the electronic component on the mounting substrate.

  In view of the above problems, an object of the present invention is to provide an electronic device, a mounting substrate, and a manufacturing method of the mounting substrate that can mount electronic components on a mounting substrate in a compact manner.

  An electronic apparatus according to the present invention includes a first terminal portion, a second terminal portion that is spaced apart from the first terminal portion, and the first terminal portion and the second terminal portion. An electronic component including at least a portion of the first uneven portion formed between the second electronic component and the second electronic component mounted at a position corresponding to the first uneven portion formed on the electronic component. The convex part provided in the second concave and convex part is opposed to the convex part provided in the first concave and convex part.

  A mounting board according to the present invention is a mounting board on which an electronic component is mounted, and the mounting board is a second terminal disposed apart from the first terminal portion of the electronic component and the first terminal portion. A second concavo-convex part formed at a position corresponding to the first concavo-convex part formed at least at a part between the terminal part and the convex part included in the second concavo-convex part. It arrange | positions in the position corresponding to the convex part with which an uneven | corrugated | grooved part is provided.

  The method for manufacturing a mounting substrate according to the present invention includes forming a first structure including an insulating substrate, a plurality of insulating substrates stacked on each other, and the first uneven portion formed on the electronic component to be mounted. A second structure having a second concavo-convex portion in which the convex portion is arranged at a position facing the convex portion is formed, and the first and second structures are laminated.

  According to the present invention, it is possible to provide an electronic device, a mounting board, and a manufacturing method of the mounting board that are capable of compactly mounting electronic components on the mounting board.

FIG. 2 is a top view of an electronic component provided in the electronic device according to the first embodiment. FIG. 2 is a side view of an electronic component provided in the electronic device according to the first embodiment. FIG. 3 is a top view of the mounting board according to the first exemplary embodiment. FIG. 3 is a side view of the mounting substrate according to the first exemplary embodiment. 1 is a top view of an electronic apparatus according to a first embodiment. 1 is a side view of an electronic apparatus according to a first embodiment. FIG. 3 is an enlarged side view of the vicinity of a concavo-convex portion of the electronic apparatus according to the first embodiment. FIG. 3 is an enlarged side view of the vicinity of a concavo-convex portion of the electronic apparatus according to the first embodiment. It is an enlarged side view near the uneven | corrugated | grooved part of an electronic device. FIG. 3 is a top view of the mounting substrate according to the first embodiment, and is a diagram for explaining a creeping distance between the first terminal portion and the second terminal portion. FIG. 3 is a side view of the mounting substrate according to the first embodiment, and is a diagram for explaining a creeping distance between the first terminal portion and the second terminal portion. FIG. 6 is a side view showing another aspect of the electronic device according to the first exemplary embodiment. It is an expanded sectional view showing an example of the shape of the uneven part with which the electronic component concerning Embodiment 1 is provided. It is an expanded sectional view showing an example of the shape of the uneven part with which the electronic component concerning Embodiment 1 is provided. It is an expanded sectional view showing an example of the shape of the uneven part with which the electronic component concerning Embodiment 1 is provided. It is an expanded sectional view showing an example of the shape of the uneven part with which the electronic component concerning Embodiment 1 is provided. It is an expanded sectional view showing an example of the shape of the uneven part with which the electronic component concerning Embodiment 1 is provided. 5 is a side view for explaining the mounting board manufacturing method according to the first exemplary embodiment; FIG. FIG. 10 is a side view for explaining another aspect of the method for manufacturing the mounting board according to the first exemplary embodiment. FIG. 6 is a top view of a mounting board according to a second exemplary embodiment. FIG. 6 is a side view of a mounting board according to a second exemplary embodiment. FIG. 6 is a top view of an electronic device according to a second exemplary embodiment. FIG. 6 is a side view of an electronic apparatus according to a second embodiment. FIG. 10 is a top view showing another aspect of the mounting substrate according to the second exemplary embodiment. FIG. 10 is a side view showing another aspect of the mounting board according to the second exemplary embodiment. FIG. 10 is a top view showing another aspect of the electronic device according to the second exemplary embodiment. FIG. 10 is a side view for explaining the method for manufacturing the electronic apparatus according to the second embodiment. FIG. 10 is a top view for explaining the method for manufacturing the electronic device according to the second embodiment. FIG. 10 is a top view for explaining the method for manufacturing the electronic device according to the second embodiment. FIG. 6 is a top view of a transformer included in an electronic device according to a third embodiment. It is a side view of the transformer with which the electronic device concerning Embodiment 3 is provided. It is sectional drawing in the cutting | disconnection line CC of the transformer shown to FIG. 23B. It is sectional drawing in the cutting | disconnection line DD of the transformer shown to FIG. 23B. It is sectional drawing in the cutting | disconnection line EE of the trans | transformer shown to FIG. 23A. FIG. 6 is a top view of a mounting board according to a third exemplary embodiment. It is a side view of the mounting substrate concerning Embodiment 3. FIG. FIG. 6 is a top view of an electronic apparatus according to a third embodiment. FIG. 6 is a side view of an electronic apparatus according to a third embodiment. FIG. 10 is a side view for explaining a method of manufacturing a transformer included in the electronic device according to the third embodiment. FIG. 10 is a side view for explaining a method of manufacturing a transformer included in the electronic device according to the third embodiment. FIG. 10 is a side view for explaining a method of manufacturing a transformer included in the electronic device according to the third embodiment.

<Embodiment 1>
Embodiment 1 of the present invention will be described below. FIG. 1A is a top view of an electronic component 10 provided in the electronic apparatus according to the present embodiment. FIG. 1B is a side view of the electronic component 10 included in the electronic device according to the present embodiment. The electronic device according to the present embodiment includes an electronic component 10 and a mounting substrate 20, and the electronic component 10 is mounted on the mounting substrate 20 (see FIGS. 3A and 3B).

  The electronic component 10 is an electronic component that is used at a high voltage, that is, an electronic component that inputs and outputs a high voltage. In other words, the electronic component 10 is an electronic component that operates at a voltage level that requires consideration of a creeping distance between the high-voltage side terminal portion and the low-voltage side terminal portion. The electronic component 10 is, for example, a transformer, a relay, a photocoupler, a sensor, or the like.

  As shown in FIGS. 1A and 1B, the electronic component 10 includes a first terminal portion 11, a second terminal portion 12, and an uneven portion 13. The 1st terminal part 11 and the 2nd terminal part 12 are arrange | positioned so that it may mutually space apart. For example, the first terminal portion 11 is disposed at one end of the electronic component 10. Further, the second terminal portion 12 is disposed at the other end facing the one end of the electronic component 10. For example, the first terminal portion 11 is a high voltage side terminal portion, and the second terminal portion 12 is a low voltage side terminal portion.

  The casing of the electronic component 10 (that is, the member constituting the outer peripheral portion) is configured using an insulating material. Further, an uneven portion 13 (first uneven portion) is formed at least at a part between the first terminal portion 11 and the second terminal portion 12. By providing the uneven portion 13 (the convex portion 14 and the concave portion 15) in this way, a creeping distance between the first terminal portion 11 and the second terminal portion 12 can be secured, and the electronic component 10 is insulated. (That is, insulation between the first terminal portion 11 and the second terminal portion 12) can be improved. In the present embodiment, the uneven portions 13 are provided on the side surfaces and the upper and lower surfaces on both sides of the electronic component 10. In consideration of the insulating property of the electronic component 10, it is preferable to cover the portions other than the first terminal portion 11 and the second terminal portion 12 with a casing made of an insulating material.

  FIG. 2A is a top view of the mounting substrate 20 according to the present embodiment. FIG. 2B is a side view of the mounting board 20 according to the present exemplary embodiment. As shown in FIGS. 2A and 2B, the mounting substrate 20 includes a third terminal portion 21, a fourth terminal portion 22, and an uneven portion 23 (second uneven portion). The uneven portion 23 (the convex portion 24 and the concave portion 25) is disposed between the third terminal portion 21 and the fourth terminal portion 22. Moreover, the uneven | corrugated | grooved part 23 is provided in the position corresponding to the uneven | corrugated | grooved part 13 of the electronic component 10 to mount (refer FIG. 3A and FIG. 3B). In the mounting substrate 20 shown in FIG. 2B, the concavo-convex portion 23 is formed on the surface (first surface) of the mounting substrate 20 on which the electronic component 10 is mounted.

  For example, the mounting substrate 20 according to the present embodiment may be configured by laminating a plurality of insulator substrates. In this case, it is preferable to use an insulator substrate made of the same material for each insulator substrate constituting the mounting substrate 20. By using an insulating substrate made of the same material, resistance to vibration and impact of the mounting substrate 20 can be enhanced. Further, by using the insulating substrate made of the same material, the thermal expansion coefficient of the insulating substrate constituting the mounting substrate 20 can be made substantially equal, and the temperature cycle characteristics of the mounting substrate 20 can be improved.

  FIG. 3A is a top view of the electronic apparatus according to the present embodiment. FIG. 3B is a side view of the electronic apparatus according to the present embodiment. That is, FIGS. 3A and 3B show a state where the electronic component 10 is mounted on the mounting board 20. As shown in FIG. 3B, the first terminal portion 11 of the electronic component 10 is electrically connected to the third terminal portion 21 of the mounting substrate 20 using a lead member 27. In addition, the second terminal portion 12 of the electronic component 10 is electrically connected to the fourth terminal portion 22 of the mounting substrate 20 using the lead member 28.

  Here, the lead members 27 and 28 may be used as a fixing member that electrically connects the electronic component 10 and the mounting substrate 20 and fixes the electronic component 10 to the mounting substrate 20. In addition, a fixing member may be provided separately from the lead members 27 and 28 to fix the electronic component 10 to the mounting substrate 20. In the electronic device shown in FIGS. 3A and 3B, the electronic component 10 is mounted such that the first terminal portion 11 and the second terminal portion 12 of the electronic component 10 face the mounting substrate 20 side.

  As shown in FIGS. 3A and 3B, in the electronic device according to the present embodiment, the uneven portion 13 of the electronic component 10 and the uneven portion 23 of the mounting substrate 20 are mounted so as to correspond to each other. Yes. That is, the convex part 24 of the mounting substrate 20 is disposed so as to face the convex part 14 of the electronic component 10. Further, the concave portion 25 of the mounting substrate 20 is disposed so as to face the concave portion 15 of the electronic component 10. In the case shown in FIG. 3B, the convex portion 14 arranged on the surface of the electronic component 10 on the mounting substrate 20 side and the convex portion 24 arranged on the surface of the mounting substrate 20 on the electronic component 10 side face each other. Yes.

  FIG. 4 is an enlarged side view of the vicinity of the concave and convex portions 13 and 23 of the electronic apparatus according to the present embodiment. As shown in FIG. 4, the creeping distance d <b> 1 in the uneven portion 13 of the electronic component 10 is a distance along the uneven portion 13. Further, the creeping distance d <b> 2 in the uneven portion 23 of the mounting substrate 20 is a distance along the uneven portion 23. Here, in this Embodiment, it arrange | positions so that the convex part 14 of the electronic component 10 and the convex part 24 of the mounting substrate 20 may mutually oppose. In other words, the phase of the uneven portion 13 of the electronic component 10 and the phase of the uneven portion 23 of the mounting substrate 20 are configured to be substantially the same.

  Thus, even if it is a case where the electronic component 10 and the mounting substrate 20 approach by arrange | positioning the convex part 14 and the convex part 24 so that it may mutually oppose, the creeping distance in the uneven | corrugated | grooved part 13 of the electronic component 10 It can suppress that d1 and the creeping distance d2 in the uneven | corrugated | grooved part 23 of the mounting substrate 20 reduce.

  That is, as shown in FIG. 6, when the position of the convex portion 14 of the electronic component 10 and the position of the convex portion 24 of the mounting substrate 20 are shifted from each other, the creepage distance and the mounting substrate in the uneven portion 13 of the electronic component 10 The creepage distance in the 20 uneven portions 23 is the creepage distance d3. That is, when the phase of the uneven portion 13 of the electronic component 10 and the phase of the uneven portion 23 of the mounting substrate 20 are shifted, the creeping distance passing through the uneven portions 13, 23 is the tip of the convex portion 14 and the convex portion 24. The distance passes through the tip, and the creepage distance along the side walls and bottom of the recesses 15 and 25 is ignored. For this reason, the creepage distance which passes along the uneven parts 13 and 23 becomes short.

  On the other hand, in the present embodiment, the phase of the uneven portion 13 of the electronic component 10 and the phase of the uneven portion 23 of the mounting substrate 20 are configured to be substantially the same. Therefore, even when the uneven portion 13 of the electronic component 10 and the uneven portion 23 of the mounting substrate 20 are close to each other, the creeping distance d1 in the uneven portion 13 of the electronic component 10 and the creeping distance d2 in the uneven portion 23 of the mounting substrate 20 are. Can be suppressed from decreasing. Therefore, the electronic component 10 and the mounting substrate 20 can be disposed close to each other while maintaining the insulation between the electronic component 10 and the mounting substrate 20, and the electronic component 10 can be mounted on the mounting substrate 20 in a compact manner.

  Here, the insulation between terminals depends on the shortest creepage distance among the creepage distances between the terminals. For this reason, even if the concave portion 25 is formed deeper than the concave portion 15, for example, the insulating property is determined by the creepage distance passing through the concave portion 15. Therefore, it is preferable that the depth of the recess 15 provided in the uneven portion 13 and the depth of the recess 25 provided in the uneven portion 23 are substantially the same. Moreover, it is preferable that the interval between the convex portions 14 included in the uneven portion 13 and the interval between the convex portions 24 included in the uneven portion 23 are substantially the same. Moreover, it is preferable that the space | interval between the convex parts 14 of the uneven part 13 and the space | interval between the convex parts 24 of the uneven part 23 are substantially equal intervals. In other words, the concavo-convex portion 13 and the concavo-convex portion 23 are preferably formed so that the shapes thereof are line symmetric.

  Note that the phase of the uneven portion 13 of the electronic component 10 and the phase of the uneven portion 23 of the mounting substrate 20 may be slightly different from each other. Specifically, as shown in FIG. 5, the corners 38 of the n-th (n is a natural number) convex part 24 and the n + 1-th convex part 14 caused by the phase shift between the concave-convex parts 13 and 23. If the distance to 39 is longer than the permissible spatial distance, no discharge occurs between the corner portion 38 and the corner portion 39, and thus a phase shift in this case is allowed. On the other hand, as shown in FIG. 6, the corner portion 38 of the n-th (n is a natural number) convex portion 24 and the corner portion 39 of the (n + 1) -th convex portion 14 caused by a phase shift between the concave-convex portions 13 and 23. When the distance is shorter than the allowable spatial distance, a discharge occurs between the corner portion 38 and the corner portion 39, and thus a phase shift in this case is not allowed.

  As shown in FIG. 3A, the uneven portion 23 formed on the mounting substrate 20 is preferably formed to have a predetermined length in the longitudinal direction of the protrusion 24 (the vertical direction on the paper surface). Hereinafter, this reason will be described. FIG. 7 is a top view of the mounting board 20 for explaining a creeping distance d4 (creeping distance along the surface of the mounting board 20) between the first terminal portion 21 and the second terminal portion 22. FIG. FIG. FIG. 8 is a side view of the mounting substrate 20 and is a view for explaining a creeping distance d5 (creeping distance passing through the uneven portion 23) between the first terminal portion 21 and the second terminal portion 22. .

  As shown in FIG. 7, the creeping distance d4 between the first terminal portion 21 and the second terminal portion 22 along the surface of the mounting substrate 20 is the end portion (unevenness of the uneven portion 23 of the mounting substrate 20. The distance along the upper edge of the portion 23 in the drawing. In this case, the creeping distance d4 becomes longer as the end portion on the upper side of the paper surface of the uneven portion 23 becomes closer to the end portion on the upper side of the paper surface of the mounting substrate 20. Here, the creepage distance d4 is the shortest creepage distance among the creepage distances along the surface of the mounting substrate 20.

  Further, as shown in FIG. 8, the creepage distance d5 between the first terminal portion 21 and the second terminal portion 22 that passes through the uneven portion 23 is a distance along the uneven portion 23 of the mounting substrate 20. . In this case, the creepage distance d5 becomes longer as the height of the convex portion 24 is higher. Here, the creepage distance d5 is the shortest creepage distance among the creepage distances passing through the concavo-convex portion 23 of the mounting substrate 20.

  The insulation between the first terminal portion 21 and the second terminal portion 22 depends on the shortest creepage distance among the creepage distances between the first terminal portion 21 and the second terminal portion 22. To do. For this reason, it is preferable to form the uneven portion 23 so that the creepage distance d4 along the surface of the mounting substrate 20 and the creepage distance d5 passing through the uneven portion 23 are substantially the same.

  In the mounting substrate 20 shown in FIGS. 7 and 8, the length of the convex portion 24 in the longitudinal direction is such that the creeping distance d4 along the surface of the mounting substrate 20 is approximately the same as the creeping distance d5 passing through the uneven portion 23. Need to be long. For this reason, in the present embodiment, the uneven portion 23 of the mounting substrate 20 is formed to be longer than the length of the electronic component 10 in the short direction (see FIG. 3A).

  FIG. 9 is a side view showing another aspect of the electronic apparatus according to the present embodiment. As shown in FIG. 9, when the third terminal portion 21 and the fourth terminal portion 22 penetrate the mounting substrate 30, the uneven portion 23 is formed on the surface 36 (first surface) of the mounting substrate 30. Further, the uneven portion 33 is formed on the back surface 37 (second surface) of the mounting substrate 30. At this time, the concavo-convex part 23 (the convex part 24 and the concave part 25) is arranged between the third terminal part 21 and the fourth terminal part 22 arranged on the surface 36 of the mounting substrate 30. Further, the concave and convex portion 33 (the convex portion 34 and the concave portion 35) is disposed between the third terminal portion 31 and the fourth terminal portion 32 that are disposed on the back surface 37 of the mounting substrate 30. Moreover, it is preferable that the uneven portion 23 and the uneven portion 33 are formed so as to be plane-symmetric with respect to the mounting substrate 30.

  As described above, when the third terminal portion 21 and the fourth terminal portion 22 penetrate the mounting substrate 30, the concave and convex portions 33 are formed on the back surface 37 of the mounting substrate 30, thereby being arranged on the back surface 37. The creepage distance between the 3rd terminal part 31 and the 4th terminal part 32 which are can be ensured, and insulation can be improved.

  FIG. 10 is an enlarged cross-sectional view illustrating an example of the shape of the concavo-convex portion 13 included in the electronic component 10 according to the present embodiment. 10 to 14, the shape of the uneven portion 13 of the electronic component 10 will be described. However, the shape shown in FIGS. 10 to 14 can also be applied to the uneven portion 23 of the mounting substrate 20. D <b> 7 illustrated in FIG. 10 indicates a spatial distance that is an interval between the convex portion 14 a and the convex portion 14 b formed on the surface of the electronic component 10. D8 indicates a creepage distance along the side wall and the bottom surface of the single recess 15 formed on the surface of the electronic component 10. For example, the longer the spatial distance d7, the longer the distance between the convex portion 14a and the convex portion 14b, and the higher the effect of suppressing the discharge between the convex portion 14a and the convex portion 14b. Further, for example, by forming the recess 15 deeply, the creepage distance d8 can be increased, and the creepage distance on the surface of the electronic component 10 can be increased. That is, the creepage distance between the first terminal portion 11 and the second terminal portion 12 can be increased, and thereby the insulating property of the electronic component 10 can be improved.

  In the present embodiment, the spatial distance d7 that is the interval between the convex portions 14 formed on the surface of the electronic component 10 and the distance along the side wall and the bottom surface of the concave portion 15 formed on the surface of the electronic component 10. The convex portion 14 and the concave portion 15 are formed so that the creepage distance d8 becomes a predetermined ratio. Here, the ratio (d7 / d8) between the spatial distance d7 and the creepage distance d8 is the voltage applied to the first terminal portion 11 and the second terminal portion, the necessary creepage distance, and the environment in which the electronic component 10 is used. (Temperature, pressure, pollution degree, etc.) can be taken into consideration. As an example, the ratio (d7 / d8) between the spatial distance d7 and the creepage distance d8 can be about d7 / d8 = 1/3.

  At this time, the ratio (d7 ′ / d8 ′) between the spatial distance d7 ′ and the creepage distance d8 ′ of the uneven portion 23 of the mounting substrate 20 and the ratio between the spatial distance d7 and the creepage distance d8 of the uneven portion 23 of the electronic component 10. It is preferable that (d7 / d8) is substantially the same. In other words, the ratio of the spatial distance, which is the distance between the convex portions 14 of the concavo-convex portion 13, to the creepage distance, which is the distance along the side wall and the bottom surface of the single concave portion 15 of the concavo-convex portion 13, is the convexity of the concavo-convex portion 23. It is preferable that the ratio of the spatial distance that is the interval between the portions 24 and the creepage distance that is the distance along the side wall and the bottom surface of the single concave portion 25 of the concave and convex portion 23 is substantially the same.

  Moreover, in this Embodiment, you may make the shape of the uneven | corrugated | grooved part 13 into a shape as shown in FIGS. For example, as shown in FIG. 11, you may comprise so that the bottom face of recessed part 15 'may curve toward the center direction of the electronic component 10. As shown in FIG. By curving the bottom surface of the recess 15 ′, the creepage distance d8 is increased, and the creepage distance on the surface of the electronic component 10 can be increased. Further, the mechanical strength of the uneven portion 13 can be improved.

  Moreover, as shown in FIG. 12, you may comprise so that the cross-sectional shape of the front-end | tip part of convex part 14a ', 14b' may become curved shape 18a, 18b. Thus, the mechanical strength of convex part 14a ', 14b' can be improved by making the front-end | tip part of convex part 14a ', 14b' into curved shape 18a, 18b.

  Further, as shown in FIG. 13, the bottom surface of the concave portion 15 ′ may be curved, and the tip portions of the convex portions 14a ′ and 14b ′ may be curved shapes 18a and 18b (combination of FIGS. 11 and 12).

  Further, as shown in FIG. 14, a cross section at the base portion of the two convex portions 14a '' and 14b '' and the bottom surface of the concave portion 15 '' sandwiched between the two convex portions 14a '' and 14b ''. The shape may be an arc shape 19. Thus, by setting the cross-sectional shape of the concave portion 15 ″ to the arc shape 19, the creeping distance can be increased without deepening the concave portion 15 ″.

  Next, the manufacturing method of the mounting substrate concerning this Embodiment is demonstrated. FIG. 15 is a side view for explaining the method for manufacturing the mounting substrate 20 (see FIG. 2B) according to the present embodiment. The mounting substrate 20 according to the present embodiment can be formed by laminating and adhering the structure 51 and the structure 52 including the concavo-convex portion 23 to each other. The structure 51 can be formed using a single or a plurality of insulator substrates. In the case of using a plurality of insulator substrates, the plurality of insulator substrates are stacked and bonded to each other. When bonding the insulating substrate, for example, an adhesive member such as a thermosetting resin can be used.

  The structure body 52 can be manufactured by stacking a plurality of insulator substrates to form a stacked body and forming the concavo-convex portion 23 in the stacked body. When forming the uneven portion 23, for example, a cutter or a laser processing machine can be used. As the insulator substrate, for example, a glass epoxy substrate, a glass composite substrate, a paper epoxy substrate, a bakelite substrate, or the like can be used.

  In the case where the structures 51 and 52 are formed using a plurality of insulator substrates, it is preferable to use an insulator substrate made of the same material for each insulator substrate constituting the structures 51 and 52. By using an insulating substrate made of the same material, the resistance of the structures 51 and 52 to vibration and impact can be increased. Moreover, by using the insulator substrate made of the same material, the thermal expansion coefficients of the insulator substrates constituting the structures 51 and 52 can be made substantially equal, and the temperature cycle characteristics of the structures 51 and 52 are improved. be able to.

  Further, when forming the mounting substrate 30 (see FIG. 9) in which the concave and convex portions 23 and 33 are arranged on both surfaces, the structure 53 is formed in addition to the structures 51 and 52 as shown in FIG. The method for forming the structure 53 is the same as the method for forming the structure 52. In other words, the structure 53 can be manufactured by stacking a plurality of insulator substrates to form a stacked body and forming the uneven portion 33 in the stacked body. And by laminating | stacking the structure 51 so that it may be pinched | interposed by the structures 52 and 53, the mounting substrate by which the uneven | corrugated | grooved parts 23 and 33 are arrange | positioned on both surfaces can be formed.

  As described in the background art, as an electronic device is downsized, a technology for mounting an electronic component on a mounting board in a compact manner has become important. For example, when the electronic component mounted on the mounting substrate is an electronic component that is used at a high voltage, it is necessary to ensure a sufficient creepage distance between the terminals in order to ensure insulation between the terminals. For this reason, there has been a problem that it is difficult to compactly mount the electronic component on the mounting substrate.

  For example, when the creepage distance between the terminals arranged on the mounting board is ensured by a linear distance, it is necessary to enlarge the mounting board. In addition, in order to ensure insulation, if the electronic component and the mounting substrate are sealed with resin after mounting the electronic component on the mounting substrate, bubbles may be generated inside the resin, and ensuring insulation is not possible. There was a problem that the quality of the electronic device was lowered due to certainty. Further, when the mounting substrate is divided between the terminals to ensure the insulation between the terminals, it is difficult to ensure the positional accuracy between the divided mounting substrates. In addition, there is a problem in that unnecessary stress acts on the electronic components arranged across the divided mounting substrates, and the reliability of the electronic components is reduced.

  Therefore, in the electronic apparatus according to the present embodiment, the convex portion 24 of the mounting substrate 20 is disposed at a position facing the convex portion 14 of the electronic component 10. In other words, the phase of the uneven portion 13 of the electronic component 10 and the phase of the uneven portion 23 of the mounting substrate 20 are configured to be substantially the same. Therefore, even when the uneven portion 13 of the electronic component 10 and the uneven portion 23 of the mounting substrate 20 are close to each other, the creeping distance in the uneven portion 13 of the electronic component 10 and the creeping distance in the uneven portion 23 of the mounting substrate 20 are the same. Decrease can be suppressed. Therefore, since the electronic component 10 and the mounting substrate 20 can be disposed close to each other while maintaining the insulation between the electronic component 10 and the mounting substrate 20, the electronic component 10 can be mounted on the mounting substrate 20 in a compact manner.

  By the invention according to the present embodiment described above, it is possible to provide an electronic device, a mounting substrate, and a mounting substrate manufacturing method capable of compactly mounting electronic components on the mounting substrate.

<Embodiment 2>
Next, a second embodiment of the present invention will be described. FIG. 17A is a top view of the mounting substrate according to the present exemplary embodiment. FIG. 17B is a side view of the mounting substrate according to the present exemplary embodiment. The present embodiment is different from the first embodiment in that the mounting substrate 60 includes a through hole 66. The rest is the same as in the first embodiment.

  As shown in FIGS. 17A and 17B, the mounting substrate 60 according to the present embodiment includes a third terminal portion 61, a fourth terminal portion 62, a through hole 66, and an uneven portion 63 (second uneven portion). Is provided. The through hole 66 is formed at a position (see FIG. 18A) corresponding to the position where the electronic component 10 is disposed. Further, the mounting substrate 60 is located on both sides of the through hole 66 when the mounting substrate 60 is viewed in plan, and the side on which the fourth terminal portion 62 is disposed from the side on which the third terminal portion 61 is disposed. A first region 67 and a second region 68 extending to

  In the first and second regions 67 and 68, a concavo-convex portion 63 (a convex portion 64 and a concave portion 65) is formed, respectively. For example, the concavo-convex portion 63 can be formed on the entire periphery of the first and second regions 67 and 68. That is, the concavo-convex portion 63 can be formed on the front and back surfaces of the mounting substrate 60, the side surface of the through hole 66, and the side surface of the mounting substrate 60 in the first region 67. Similarly, the concavo-convex portion 63 can be formed on the front and back surfaces of the mounting substrate 60, the side surface of the through hole 66, and the side surface of the mounting substrate 60 in the second region 68. Here, the uneven portion 63 is formed at a position corresponding to the uneven portion 13 of the electronic component 10 to be mounted.

  For example, the mounting substrate 60 according to the present embodiment may be configured by laminating a plurality of insulator substrates. In this case, it is preferable to use an insulator substrate made of the same material for each insulator substrate constituting the mounting substrate 60. By using an insulating substrate made of the same material, resistance to vibration and impact of the mounting substrate 60 can be enhanced. Further, by using the insulating substrate made of the same material, the thermal expansion coefficient of the insulating substrate constituting the mounting substrate 60 can be made substantially equal, and the temperature cycle characteristics of the mounting substrate 60 can be improved.

  FIG. 18A is a top view of the electronic apparatus according to this embodiment. FIG. 18B is a side view of the electronic apparatus according to the present embodiment. That is, FIGS. 18A and 18B show a state in which the electronic component 10 is mounted on the mounting board 60. Since the electronic component 10 is the same as the electronic component 10 described in the first embodiment, a duplicate description is omitted. As shown in FIG. 18B, the first terminal portion 11 of the electronic component 10 is electrically connected to the third terminal portion 61 of the mounting substrate 60 using the lead member 27. Further, the second terminal portion 12 of the electronic component 10 is electrically connected to the fourth terminal portion 62 of the mounting board 60 using the lead member 28.

  Here, the lead members 27 and 28 may be used as a fixing member that electrically connects the electronic component 10 and the mounting substrate 60 and fixes the electronic component 10 to the mounting substrate 60. Note that a fixing member may be provided separately from the lead members 27 and 28 to fix the electronic component 10 to the mounting substrate 60. In the electronic device shown in FIGS. 18A and 18B, the electronic component 10 is mounted such that the first terminal portion 11 and the second terminal portion 12 of the electronic component 10 face the mounting substrate 60 side.

  Also, as shown in FIGS. 18A and 18B, in the electronic device according to the present embodiment, the uneven portion 13 of the electronic component 10 and the uneven portion 63 of the mounting substrate 60 are mounted so as to correspond to each other. Yes. That is, the convex portion 64 of the mounting substrate 60 is disposed so as to face the convex portion 14 of the electronic component 10. In addition, the recess 65 of the mounting substrate 60 is disposed so as to face the recess 15 of the electronic component 10. In other words, the phase of the uneven portion 13 of the electronic component 10 and the phase of the uneven portion 63 of the mounting substrate 60 are configured to be substantially the same.

  Thus, even if it is a case where the electronic component 10 and the mounting substrate 60 approach by arrange | positioning the convex part 14 and the convex part 64 so that it may mutually oppose, the creeping distance in the uneven | corrugated | grooved part 13 of the electronic component 10 And the creepage distance in the concavo-convex portion 63 of the mounting substrate 60 can be suppressed from decreasing. Therefore, since the electronic component 10 and the mounting substrate 60 can be disposed close to each other while maintaining the insulation between the electronic component 10 and the mounting substrate 60, the electronic component 10 can be mounted on the mounting substrate 60 in a compact manner.

  Here, in the electronic device according to the present embodiment, as shown in FIGS. 18A and 18B, the through hole 66 is provided in the mounting substrate 60, and the convex portion 14 disposed on the side surface of the electronic component 10, and the mounting substrate The electronic component 10 is mounted so that the convex part 64 arrange | positioned at the through-hole 66 side of 60 opposes. In this case, the convex part 64 of the mounting substrate and the convex part 14 of the electronic component 10 can be brought close to each other for the reason described above. Therefore, when the electronic component 10 is mounted on the mounting substrate 60, the electronic device 10 and the mounting substrate 60 can be arranged so as to overlap each other when the electronic device is viewed from the side (see FIG. 18B). Therefore, the height of the electronic component 10 from the surface of the mounting substrate 60 can be reduced. For example, the electronic component 10 may be mounted so as to penetrate the through hole 66.

  Also in the present embodiment, it is preferable that the depth of the recess 15 provided in the uneven portion 13 and the depth of the recess 65 provided in the uneven portion 63 are substantially the same. In addition, it is preferable that the interval between the convex portions 14 included in the uneven portion 13 and the interval between the convex portions 64 included in the uneven portion 63 are substantially the same. Moreover, it is preferable that the space | interval between the convex parts 14 of the uneven | corrugated | grooved part 13 and the space | interval between the convex parts 64 of the uneven | corrugated | grooved part 63 are substantially equal intervals. In other words, it is preferable to form the concavo-convex portion 13 and the concavo-convex portion 63 so that the shapes thereof are line symmetric.

  FIG. 19A is a top view showing another aspect of the mounting substrate according to the present exemplary embodiment. FIG. 19B is a side view showing another aspect of the mounting substrate according to the present exemplary embodiment. As shown in FIGS. 19A and 19B, in this embodiment, it is not always necessary to provide the uneven portion 93 on the side surface of the mounting substrate 90. In other words, the uneven portions 93 may be provided on the front and back surfaces of the mounting substrate 90 and the side surfaces of the through holes 96 in the first and second regions 67 and 68.

  That is, as shown in FIG. 19A, when the creeping distance d9 passing through the side surface of the mounting substrate 90 between the first terminal portion 61 and the second terminal portion 62 is sufficiently long, the side surface of the mounting substrate 90 It is not necessary to provide the uneven portion 93 on the surface. Further, the insulating property between the first terminal portion 61 and the second terminal portion 62 is a portion having the shortest creepage distance among the creepage distances between the first terminal portion 61 and the second terminal portion 62. Depends on. Therefore, for example, when the creeping distance d9 passing through the side surface side of the mounting substrate 90 is substantially the same as or longer than the creeping distance d10 passing through the uneven portion 93 formed in the side surface of the through hole 66, the side surface of the mounting substrate 90 is It is not necessary to provide the uneven portion 93.

  When a plurality of electronic devices according to the present embodiment are arranged, as shown in FIG. 20, the uneven portion 63 is formed on the side surface of the mounting substrate 60_1, 60_2, and the uneven portion of the second region 68 of the mounting substrate 60_1. 63 and the concavo-convex portion 63 of the first region 67 of the mounting substrate 60_2 may be arranged so as to correspond to each other (that is, so that the phases are substantially the same). In other words, the convex portions 64 of the second region 68 of the mounting substrate 60_1 and the convex portions 64 of the first region 67 of the mounting substrate 60_2 are arranged so as to face each other, so that the creepage on the side surfaces of the mounting substrates 60_1 and 60_2. A decrease in distance can be suppressed.

  Also in the present embodiment, the shape of the concavo-convex portions of the electronic component 10 and the mounting boards 60 and 90 may be the shapes shown in FIGS.

  Next, the manufacturing method of the mounting substrate concerning this Embodiment is demonstrated. FIG. 21 is a side view for explaining the method for manufacturing the mounting board 60 (see FIGS. 17A and 17B) according to the present embodiment. FIG. 22 is a top view of the structure 70. FIG. 23 is a top view of the structure 73. The mounting substrate 60 according to the present embodiment can be formed by laminating the structure 70 so as to be sandwiched between the structure 73 and the structure 76.

  The structure 70 can be formed using a single or a plurality of insulator substrates. In the case of using a plurality of insulator substrates, the plurality of insulator substrates are stacked and bonded to each other. When bonding the insulating substrate, for example, an adhesive member such as a thermosetting resin can be used. Further, as shown in FIG. 22, a through hole 81 is formed at a position (see FIG. 18A) corresponding to the position where the electronic component 10 of the structure 70 is disposed. Further, a convex portion 71 and a concave portion 72 are formed on the side surfaces of the first and second regions 82 and 83 of the structure 70 (that is, the side surfaces of the structure 70 and the side surfaces of the through holes 81), respectively.

  As shown in FIGS. 21 and 23, when the structure 73 is formed, a plurality of insulator substrates are stacked on each other to form a stacked body, and this corresponds to the position where the electronic component 10 of the stacked body is disposed. A through hole 85 is formed at a position (see FIG. 18A). Furthermore, the convex part 74 and the recessed part 75 are formed in the side surface (namely, the side surface of the structure 73, and the side surface of the through-hole 85) and the upper surface of the 1st and 2nd area | regions 87 and 88 of a laminated body, respectively. Note that the manufacturing method of the structure body 76 is basically the same as the manufacturing method of the structure body 73.

  For example, a cutter or a laser processing machine can be used to form the uneven portion on the structure. Moreover, as an insulator board | substrate which comprises each structure, a glass epoxy board | substrate, a glass composite board | substrate, a paper epoxy board | substrate, a bakelite board | substrate etc. can be used, for example.

  In the case where the structures 70, 73, and 76 are formed using a plurality of insulator substrates, the insulator substrates made of the same material are used for the insulator substrates constituting the structures 70, 73, and 76. Is preferred. By using an insulating substrate made of the same material, it is possible to increase resistance to vibration and impact of the mounting substrate 60 after the structures 70, 73, and 76 are stacked. Further, by using the insulating substrate made of the same material, the thermal expansion coefficient of the insulating substrate constituting the mounting substrate 60 can be made substantially equal, and the temperature cycle characteristics of the mounting substrate 60 can be improved.

  By the invention according to the present embodiment described above, it is possible to provide an electronic device, a mounting substrate, and a mounting substrate manufacturing method capable of compactly mounting electronic components on the mounting substrate.

<Embodiment 3>
Next, a third embodiment of the present invention will be described. In the present embodiment, a transformer is used as the electronic component 10. The rest is the same as in the first and second embodiments, and a duplicate description is omitted. FIG. 24A is a top view of the transformer according to the present exemplary embodiment. FIG. 24B is a side view of the transformer according to the present exemplary embodiment. 24C is a cross-sectional view taken along the line CC of the transformer shown in FIG. 24B. 24D is a cross-sectional view taken along the cutting line DD of the transformer shown in FIG. 24B. 24E is a cross-sectional view taken along line EE of the transformer shown in FIG. 24A.

  As shown in FIGS. 24A and 24B, the transformer 101 according to the present embodiment includes a transformer main body 110 and a core 112. The transformer main body 110 includes a base 111, a primary conductor layer 121, and a secondary conductor layer 126 (see FIGS. 24C to 24E).

  The base material 111 is a structure serving as a base material of the transformer main body 110, and can be configured using an insulating material. The base material 111 includes a first terminal portion 117 at the end of the primary side 115 of the base material 111. In addition, the base material 111 includes a second terminal portion 118 at the end of the secondary side 116 of the base material 111. For example, the transformer main body 110 has a rectangular shape, and the first terminal portion 117 and the second terminal portion 118 are arranged at respective end portions in the longitudinal direction of the transformer main body portion 110. The first terminal portion 117 is a terminal connected to the primary conductor layer 121 (see FIG. 24C). The second terminal portion 118 is a terminal connected to the secondary conductor layer 126 (see FIG. 24D). The first terminal portion 117 and the second terminal portion 118 are exposed to the outside of the base material 111 at the ends of the primary side 115 and the secondary side 116 of the base material 111, respectively.

  A convex portion 113 and a concave portion 114 are formed on at least a part of the surface of the base 111 between the first terminal portion 117 and the second terminal portion 118. In the example shown in FIG. 24A and FIG. 24B, convex portions 113 and concave portions 114 are formed on the side surfaces and the upper and lower surfaces on both sides of the substrate 111. In other words, the convex portion 113 and the concave portion 114 are formed on the surface provided between the first terminal portion 117 and the second terminal portion 118 among the surfaces of the base material 111.

  As shown in FIG. 24C, the primary conductor layer 121 is provided in the base material 111 and is electrically connected to the first terminal portion 117. The primary conductor layer 121 corresponds to the primary winding of the transformer. For example, the primary conductor layer 121 is formed so as to extend from the first terminal portion 117 in the direction of the secondary side 116 and to make a round of the core portion 112 provided in the through hole 119 of the base material 111. At this time, one end of the primary conductor layer 121 is connected to the first terminal portion 117_1, and the other end is connected to the first terminal portion 117_2. The primary conductor layer 121 can be configured using a metal material such as copper or aluminum, for example.

  24E shows an example in which the transformer main body 110 includes four primary conductor layers 121, but the number of primary conductor layers 121 can be arbitrarily determined. When a plurality of primary conductor layers 121 are provided, the plurality of primary conductor layers 121 can be electrically connected to each other through, for example, through holes. The plurality of primary conductor layers 121 can be electrically connected to each other by connecting a plurality of primary terminals 127, for example.

  As shown in FIG. 24D, the secondary conductor layer 126 is provided in the base material 111 and is electrically connected to the second terminal portion 118. The secondary conductor layer 126 corresponds to the secondary winding of the transformer. For example, the secondary-side conductor layer 126 is formed so as to extend from the second terminal portion 118 toward the primary side 115 and further make a round around the core portion 112 provided in the through hole 119 of the base material 111. At this time, one end of the secondary conductor layer 126 is connected to the second terminal portion 118_1, and the other end is connected to the second terminal portion 118_2. The secondary conductor layer 126 can be configured using a metal material such as copper or aluminum, for example.

  24E shows an example in which the transformer body 110 includes four secondary conductor layers 126, but the number of secondary conductor layers 126 can be arbitrarily determined. When a plurality of secondary conductor layers 126 are provided, the plurality of secondary conductor layers 126 can be electrically connected to each other through, for example, through holes. In addition, the plurality of secondary conductor layers 126 can be electrically connected to each other by connecting a plurality of second terminal portions 118, for example.

  As shown in FIG. 24E, the primary conductor layer 121 and the secondary conductor layer 126 are stacked on each other with an insulating material interposed therebetween. In the example shown in FIG. 24E, a plurality of primary conductor layers 121 are arranged near the center in the stacking direction, and a plurality of secondary conductor layers 126 are arranged on the end sides (upper surface side and lower surface side) in the stacking direction. ing. However, the arrangement of the primary conductor layer 121 and the secondary conductor layer 126 shown in FIG. 24E is merely an example, and the arrangement of the primary conductor layer 121 and the secondary conductor layer 126 can be arbitrarily determined.

  Further, the base material 111 may be configured using a plurality of insulator substrates. In this case, the transformer main body 110 can be configured by laminating a plurality of primary conductor layers 121, a plurality of insulator substrates, and a plurality of secondary conductor layers 126. As the insulator substrate constituting the base material 111, for example, a glass epoxy substrate, a glass composite substrate, a paper epoxy substrate, a bakelite substrate, or the like can be used.

  In the case where the base material 111 is configured using a plurality of insulator substrates, it is preferable to use an insulator substrate made of the same material for each insulator substrate constituting the base material 111. By using the insulating substrate made of the same material, the resistance of the transformer main body 110 to vibration and impact can be enhanced. Further, by using an insulating substrate made of the same material, the thermal expansion coefficient of the insulating substrate constituting the transformer main body 110 can be made substantially equal, and the temperature cycle characteristics of the transformer main body 110 can be improved. it can.

  The core portion 112 is disposed so as to surround at least a part of the primary conductor layer 121 and at least a part of the secondary conductor layer 126, respectively. The core portion 112 can be configured using a magnetic material such as ferrite. By surrounding the primary side conductor layer 121 and the secondary side conductor layer 126 with the core portion 112, the primary side conductor layer 121 and the secondary side conductor layer 126 can be magnetically coupled. As shown in FIGS. 24A and 24B, the core portion 112 is provided so as to cover the periphery of the transformer main body portion 110 near the secondary side 116. Further, as shown in FIGS. 24C and 24D, a part of the core portion 112 is inserted through a through hole 119 formed in the base material 111.

  Here, in the transformer according to the present embodiment, the voltage of the first terminal unit 117 is higher than the voltage of the second terminal unit 118. Therefore, the core portion 112 is provided on the second terminal portion 118 side where the voltage is low. In other words, the distance between the end portion of the core portion 112 on the first terminal portion 117 side and the first terminal portion 117 is equal to the end portion of the core portion 112 on the second terminal portion 118 side and the second terminal portion 118. And longer than the distance.

  As shown in FIG. 24E, the core portion 112 can be configured using core members 112a and 112b having a cross-sectional shape of E shape. And the core part 112 can be attached to the transformer main body part 110 by sandwiching the transformer main body part 110 between the core members 112a and 112b. As shown in FIG. 24E, since the primary side conductor layer 121 and the secondary side conductor layer 126 are embedded in the base material 111, they are not in direct contact with the core portion 112, and insulation is maintained.

  In the transformer according to the present embodiment, a high voltage is applied to the first terminal portion 117. Here, since the first terminal portion 117 is exposed to the outside of the base material 111, the creepage distance between the first terminal portion 117 and the second terminal portion 118 (when the core portion 112 is grounded) Needs to ensure a creepage distance between the first terminal portion 117 and the core portion 112). Therefore, in the transformer according to the present embodiment, the convex portion 113 and the concave portion 114 are formed on at least a part of the surface of the base 111 between the first terminal portion 117 and the second terminal portion 118.

  In the present embodiment, since the voltage of the first terminal portion 117 is higher than the voltage of the second terminal portion 118, the convex portion disposed between the first terminal portion 117 and the core portion 112. The number of the 113 and the recesses 114 is larger than the number of the protrusions 113 and the recesses 114 disposed between the second terminal portion 118 and the core portion 112.

  FIG. 25A is a top view of the mounting substrate according to the present exemplary embodiment. FIG. 25B is a side view of the mounting board according to the present exemplary embodiment. As shown in FIGS. 25A and 25B, the mounting substrate 130 according to the present embodiment includes a third terminal portion 131, a fourth terminal portion 132, a through hole 136, and an uneven portion 133 (second uneven portion). Is provided. Further, the mounting substrate 130 includes a terminal portion 139 for grounding the core portion 112 of the transformer 101.

  The through hole 136 is formed at a position corresponding to a position where the transformer 101 is disposed (that is, a position corresponding to a position between the core portion 112 and the first terminal portion 117; see FIG. 26A). The mounting substrate 130 is disposed on both sides of the through hole 136 when the mounting substrate 130 is viewed in plan, and the side on which the fourth terminal portion 132 is disposed from the side on which the third terminal portion 131 is disposed. A first region 137 and a second region 138 extending to

  In the first and second regions 137 and 138, a concavo-convex portion 133 (a convex portion 134 and a concave portion 135) is formed, respectively. For example, the concavo-convex portion 133 can be formed around the entire periphery of the first and second regions 137 and 138. That is, the uneven portion 133 can be formed on the front and back surfaces of the mounting substrate 130, the side surface of the through hole 136, and the side surface of the mounting substrate 130 in the first region 137. Similarly, the uneven portion 133 can be formed on the front and back surfaces of the mounting substrate 130, the side surfaces of the through holes 136, and the side surfaces of the mounting substrate 130 in the second region 138. Here, the uneven portion 133 is formed at a position corresponding to the uneven portion of the transformer 101 to be mounted.

  For example, the mounting substrate 130 according to the present embodiment may be configured by stacking a plurality of insulator substrates. In this case, it is preferable to use an insulator substrate made of the same material for each insulator substrate constituting the mounting substrate 130. By using an insulating substrate made of the same material, resistance to vibration and impact of the mounting substrate 130 can be increased. Further, by using the insulating substrate made of the same material, the thermal expansion coefficient of the insulating substrate constituting the mounting substrate 130 can be made substantially equal, and the temperature cycle characteristics of the mounting substrate 130 can be improved.

  FIG. 26A is a top view of the electronic apparatus according to the present embodiment. FIG. 26B is a side view of the electronic device according to the present embodiment. That is, FIGS. 26A and 26B show a state in which the transformer 101 is mounted on the mounting board 130. As shown in FIG. 26B, the first terminal portion 117 of the transformer 101 is electrically connected to the third terminal portion 131 of the mounting substrate 130 using the lead member 127. Further, the second terminal portion 118 of the transformer 101 is electrically connected to the fourth terminal portion 132 of the mounting substrate 130 using a lead member 128. Furthermore, the core portion 112 of the transformer 101 is electrically connected to the grounding terminal portion 139 using a lead member 129.

  Here, the lead members 127, 128, and 129 may be used as a fixing member that electrically connects the transformer 101 and the mounting substrate 130 and fixes the transformer 101 to the mounting substrate 130. Note that a fixing member may be provided separately from the lead members 127, 128, and 129 to fix the transformer 101 to the mounting substrate 130.

  As shown in FIGS. 26A and 26B, in the electronic apparatus according to the present embodiment, the concave and convex portions (the convex portion 113 and the concave portion 114) of the transformer 101 and the concave and convex portion 133 of the mounting substrate 130 are in positions corresponding to each other. Is implemented. That is, the convex portion 134 of the mounting substrate 130 is disposed so as to face the convex portion 113 of the transformer 101. Further, the recess 135 of the mounting substrate 130 is disposed so as to face the recess 114 of the transformer 101. In other words, the phase of the concavo-convex portion of the transformer 101 and the phase of the concavo-convex portion 133 of the mounting substrate 130 are arranged to be substantially the same.

  Thus, even if the transformer 101 and the mounting substrate 130 are close to each other by disposing the convex portion 113 and the convex portion 134 so as to face each other, the creepage distance in the concave and convex portion of the transformer 101 and the mounting substrate It can suppress that the creeping distance in 130 uneven | corrugated | grooved parts reduces. Therefore, since the transformer 101 and the mounting substrate 130 can be disposed close to each other while maintaining the insulation between the transformer 101 and the mounting substrate 130, the transformer 101 can be mounted on the mounting substrate 130 in a compact manner.

  Note that the shape of the concavo-convex portions of the transformer 101 and the mounting substrate 130 are the same as those described in the first and second embodiments, and thus redundant description is omitted. Further, since the manufacturing method of the mounting substrate 130 is the same as that described in the second embodiment, a duplicate description is omitted.

  Next, a method for manufacturing the transformer 101 will be described. 27A to 27C are side views for explaining an example of the manufacturing method of the transformer 101. As shown in FIG. 27A, when the transformer main body 110 is manufactured, the first structure 140, the second structure 150, and the third structure 160 are formed. The first structure 140 is a structure disposed at the center of the transformer main body 110, and the second structure 150 is a structure disposed at the top of the transformer main body 110, and the third structure. Reference numeral 160 denotes a structure disposed under the transformer main body 110.

  The first structure 140 is manufactured by laminating a plurality of primary conductor layers, a plurality of insulator substrates, and a plurality of secondary conductor layers, and forming convex portions 143 and concave portions 144 on the side surfaces in the longitudinal direction. can do. Further, a through hole 149 is formed at a location where the core portion 112 of the first structure 140 is disposed.

  The second structure 150 is manufactured by stacking a plurality of insulator substrates and forming a convex portion 153 and a concave portion 154 on the side surface in the longitudinal direction, and a convex portion 155 and a concave portion 156 on one main surface. Can do. Further, a through hole 159 is formed at a location where the core portion 112 of the second structure 150 is disposed.

  The third structure 160 is manufactured by stacking a plurality of insulating substrates and forming a convex portion 163 and a concave portion 164 on the side surface in the longitudinal direction and a convex portion 165 and a concave portion 166 on one main surface. Can do. In addition, a through hole 169 is formed at a location where the core portion 112 of the third structure 160 is disposed.

  27A, the one main surface 146 of the first structure 140 and the other main surface 158 of the second structure 150 are bonded, and the other main surface 147 of the first structure 140 is adhered. And the other main surface 168 of the third structure 160 are bonded together to produce the transformer main body 110. For bonding the first to third structures 140, 150, 160, an adhesive member such as a thermosetting resin can be used.

  Thereafter, the transformer body 110 is sandwiched between the core members 112a and 112b as shown in FIG. 27B, so that the core 112 can be attached to the transformer body 110 as shown in FIG. 27C. At this time, the core portion 112 is arranged in the transformer main body 110 so that at least a part of the primary conductor layer and at least a part of the secondary conductor layer are surrounded by the core member 112. In FIGS. 27B and 27C, the convex portions and the concave portions after assembling the transformer main body portion 110 are labeled with the convex portions 113 and the concave portions 114, respectively.

  Note that the mounting substrate 130 is preferably configured using a plurality of insulator substrates made of the same material. The transformer main body 110 is also preferably configured using a plurality of insulator substrates made of the same material. At this time, the plurality of insulator substrates constituting the mounting substrate 130 and the plurality of insulator substrates constituting the transformer body 110 may be made of the same material or different materials. May be. When the mounting substrate 130 and the transformer main body 110 are configured using an insulating substrate made of the same material, the thermal expansion coefficients of the mounting substrate 130 and the transformer main body 110 can be made substantially equal. The stress acting between the transformer main body 110 can be reduced. Therefore, the reliability of the transformer 101 can be improved.

  In the above description, a transformer having a core has been described as an example. However, in this embodiment, a transformer without a core may be used as an electronic component.

  By the invention according to the present embodiment described above, it is possible to provide an electronic device, a mounting substrate, and a mounting substrate manufacturing method capable of compactly mounting electronic components on the mounting substrate.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the configuration of the above embodiment, and those skilled in the art within the scope of the invention of the claims of the present application claims. It goes without saying that various modifications, modifications, and combinations that can be made are included.

10 Electronic parts 11, 117 First terminal part 12, 118 Second terminal part 13 Concave part 14 Convex part 15 Concave part 20, 60, 130 Mounting substrate 21, 61, 131 Third terminal part 22, 62, 132 4 terminal portions 23, 63, 133 uneven portions 24, 64, 134 convex portions 25, 65, 135 concave portions 27, 28, 127, 128 lead members 66, 136 through holes 67, 137 first regions 68, 138 second Region 110 transformer 110 transformer body part 111 base material 112 core part 113 convex part 114 concave part 115 primary side 116 secondary side 119 through-hole 121 primary side conductor layer 126 secondary side conductor layer

Claims (24)

A first terminal portion;
A second terminal portion disposed apart from the first terminal portion;
An electronic component comprising: a first uneven portion formed at least in part between the first terminal portion and the second terminal portion;
A mounting substrate on which the electronic component is mounted and a second uneven portion is formed at a position corresponding to the first uneven portion formed on the electronic component;
The convex portion provided in the second uneven portion is opposed to the convex portion provided in the first uneven portion,
Electronics. The first terminal portion is electrically connected to a third terminal portion included in the mounting substrate,
The second terminal portion is electrically connected to a fourth terminal portion included in the mounting substrate,
The second concavo-convex part is disposed between the third terminal part and the fourth terminal part,
The electronic device according to claim 1. The third terminal portion and the fourth terminal portion pass through the mounting substrate,
The second concavo-convex portion is formed on a first surface of the mounting substrate on which the electronic component is mounted and a second surface opposite to the first surface.
The electronic device according to claim 2. The mounting board includes a through hole penetrating the mounting board at a position corresponding to a position where the electronic component is disposed,
The mounting board is located on both sides of the through hole when the mounting board is viewed in plan, from the side where the third terminal part is arranged to the side where the fourth terminal part is arranged. Comprising first and second regions extending;
The second uneven portion includes a first surface on the side where the electronic component is mounted in the first and second regions, a second surface opposite to the first surface, Formed on the side surface of the through hole,
The electronic device according to claim 2 or 3.   The electronic device according to claim 4, wherein the second uneven portion is further formed on a side surface of the mounting substrate in the first and second regions. Comprising first and second mounting boards on which the electronic components are mounted,
The first and second mounting boards have a second concavo-convex part formed on a side surface of the second mounting board, and a convex part of a second concavo-convex part formed on the side surface of the first mounting board. It is arranged to face the convex part,
The electronic device according to claim 5.   A convex portion of a first concavo-convex portion disposed on the surface of the electronic component on the mounting board side, and a second surface disposed on the first surface of the mounting substrate on the side where the electronic component is mounted. The electronic device of Claim 2 or 3 with which the convex part of the uneven | corrugated | grooved part is facing.   The convex part of the 1st uneven part arrange | positioned at the side surface of the said electronic component and the convex part of the 2nd uneven part arrange | positioned at the said through-hole side of the said mounting board are facing. The electronic device according to any one of 4 to 6. The interval between the convex portions provided in the second uneven portion is substantially the same as the interval between the convex portions provided in the first uneven portion,
The depth of the recess provided in the second uneven portion is substantially the same as the depth of the recess provided in the first uneven portion,
The electronic device as described in any one of Claims 1 thru | or 8.   10. The electronic device according to claim 1, wherein an interval between the convex portions of the first uneven portion and an interval between the convex portions of the second uneven portion are substantially equal intervals.   A ratio of a spatial distance that is an interval between the convex portions of the first uneven portion and a creeping distance that is a distance along the side wall and the bottom surface of the single concave portion of the first uneven portion is the second distance. The ratio of the spatial distance that is the interval between the convex portions of the concave and convex portions and the creeping distance that is the distance along the side wall and the bottom surface of the single concave portion of the second concave and convex portion is substantially the same. The electronic device according to any one of 10. The first terminal portion is disposed at a first end portion of the electronic component, and the second terminal portion is disposed at a second end portion facing the first end portion of the electronic component,
The first concavo-convex portion is disposed on both side surfaces and upper and lower surfaces of the electronic component.
The electronic device as described in any one of Claims 1 thru | or 11.   The electronic device according to any one of claims 1 to 12, wherein a cross-sectional shape of a tip portion of a convex portion included in the first and second concave-convex portions is a curved shape.   The electronic device according to claim 1, wherein a bottom surface of a recess provided in the first and second uneven portions is curved.   The electronic device according to claim 1, wherein the mounting substrate includes a plurality of insulating substrates made of the same material and stacked on each other. The electronic component is a transformer;
The transformer is
A base material made of an insulating material;
A primary conductor layer provided in the base material and electrically connected to the first terminal portion;
A secondary conductor layer provided in the base material and electrically connected to the second terminal portion;
A transformer main body comprising:
A core portion including a magnetic material and disposed so as to surround at least a part of the primary side conductor layer and at least a part of the secondary side conductor layer, and
The primary side conductor layer and the secondary side conductor layer are laminated with each other through an insulating material,
The first uneven portion is formed on at least a part of the surface of the base material between the first terminal portion and the second terminal portion,
The electronic device as described in any one of Claims 1 thru | or 15.   The voltage of the first terminal portion is higher than the voltage of the second terminal portion, and the distance between the end portion of the core portion on the first terminal portion side and the first terminal portion is: The electronic device according to claim 16, wherein the electronic device is longer than a distance between an end portion of the second terminal portion of the core portion and the second terminal portion.   The through hole is formed at a position where the transformer main body and the mounting substrate overlap each other between the core portion and the first terminal portion when the transformer and the mounting substrate are viewed in plan. The electronic device according to claim 16 or 17. A mounting board on which electronic components are mounted,
The mounting substrate includes a first uneven portion formed at least at a part between a first terminal portion of the electronic component and a second terminal portion that is spaced apart from the first terminal portion. A second concavo-convex portion formed at a corresponding position;
The convex portion provided in the second uneven portion is disposed at a position facing the convex portion provided in the first uneven portion,
Mounting board. The mounting substrate is
A third terminal portion electrically connected to the first terminal portion of the electronic component;
A fourth terminal portion electrically connected to the second terminal portion of the electronic component;
The second concavo-convex part is disposed between the third terminal part and the fourth terminal part,
The mounting substrate according to claim 19. The third terminal portion and the fourth terminal portion pass through the mounting substrate,
The second concavo-convex portion is formed on a first surface of the mounting substrate on which the electronic component is mounted and a second surface opposite to the first surface.
The mounting substrate according to claim 20. Forming a first structure including an insulator substrate;
A plurality of insulator substrates are stacked on each other, and a second concavo-convex portion in which a convex portion is arranged at a position opposite to the convex portion of the first concavo-convex portion formed on the electronic component to be mounted is formed. Forming a structure,
Laminating the first and second structures;
Manufacturing method of mounting substrate. Further, a plurality of insulator substrates are stacked on each other, and a second concavo-convex part in which a convex part is arranged at a position opposite to the convex part of the first concavo-convex part formed on the electronic component to be mounted is formed. 3 structures are formed,
Stacking the first structure so as to be sandwiched between the second and third structures;
The manufacturing method of the mounting substrate of Claim 22.   24. The method for manufacturing a mounting board according to claim 23, wherein the insulator substrates included in the first to third structures are insulator substrates made of the same material.

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