JP2015138795A - Lead frame and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent one metal plate from being warped when the one metal plate and the other metal plate are joined to form another metal plate.SOLUTION: A lead frame includes: one metal plate 10 having a terminal 15; and the other metal plate 50 on which a mounting component is placed, the other metal plate 50 being joined to the one metal plate 10. A portion of a first extension part body 12a, which is located closer to the tip side than a first protruding part 31, is pressed to deform the first extension part body 12a. The process causes at least a tip of the first extension part body 12a to contact with a first fitting part 62 and causes a terminal 15 side end part of the first protruding part 31 to contact with a first recessed part 41. A portion of a second extension part body 13a, which is located closer to the tip side than a second protruding part 32, is pressed to deform the second extension part body 13a. The process causes at least a tip of the second extension part body 13a to contact with a second fitting part 63 and causes a terminal 15 side end part of the second protruding part 32 to contact with a second recessed part 42.

Description

  The present invention relates to a lead frame including one metal plate and the other metal plate joined to one metal plate, and a manufacturing method for manufacturing such a lead frame.

  Conventionally, it is known to mount a mounting component such as a semiconductor device on a lead frame and encapsulate the mounting component with a resin (for example, see Patent Document 1). In this way, the lead frame on which the mounting component is placed has a terminal such as a press-fit terminal, and the terminal and the mounting component encapsulated with resin are connected. And conventionally, the location which mounts a terminal and mounting components is formed in one metal plate.

JP 2010-129795 A

  In this regard, the inventors of the present application separately manufactured one metal plate having terminals and the other metal plate on which the mounting component is placed, and joined the one metal plate and the other metal plate. I came up with a single metal plate (lead frame). However, when two metal plates are joined in this way, if both sides of one metal plate are deformed and crimped to the other metal plate in the fitting portion of the other metal plate, the two metal plates are seen from both sides of the one metal plate. A force directed inward of one of the metal plates worked, and as a result, the one metal plate might be warped.

  In view of the above points, the present invention prevents one metal plate from warping when joining one metal plate and the other metal plate to form one metal plate. A lead frame and a method for manufacturing such a lead frame are provided.

The lead frame according to the present invention comprises:
One metal plate having terminals;
The other metal plate that is joined to the one metal plate and on which the mounting component is placed,
The one metal plate includes a first connecting part connected to the terminal, a first extending part provided at one end of the first connecting part and extending in the first direction from the first connecting part, and the first A second extending portion provided at the other end of the one connecting portion and extending from the first connecting portion in a second direction including a component opposite to the first direction;
The other metal plate has a first fitting portion into which the first extension portion is fitted, and a second fitting portion into which the second extension portion is fitted,
The first extending portion protrudes in a direction including a first extending portion main body extending in the first direction and a component in a direction in which the terminal extends from the first extending portion main body. And
The second extending portion protrudes in a direction including a second extending portion main body extending in the second direction and a component in a direction in which the terminal extends from the second extending portion main body. Have
The first fitting portion has a first recess in which the first protrusion is accommodated;
The second fitting portion has a second recess in which the second protrusion is accommodated;
The first extension portion main body is deformed by pressing the front end side of the first extension portion main body with respect to the first projecting portion, so that at least the front end of the first extension portion main body is the first fitting. And the end of the first projecting portion on the terminal side contacts the first recess,
By pressing the tip end side of the second extending portion main body from the second projecting portion to deform the second extending portion main body, at least the tip of the second extending portion main body is fitted into the second fitting portion. And the end of the second protrusion on the terminal side contacts the second recess.

In the lead frame according to the present invention,
The first protrusion has a pair of first protrusions extending from both sides of the first extension body,
The second protruding portion may have a pair of second protruding portions extending from both sides of the second extending portion main body.

In the lead frame according to the present invention,
The first extending portion and the first fitting portion have a first positioning structure for positioning each other's position,
The second extension part and the second fitting part may have a second positioning structure for positioning each other's position.

In the lead frame according to the present invention,
The one metal plate includes a second connecting part connected to the terminal, a third extending part provided at one end of the second connecting part and extending in the first direction from the second connecting part, A fourth extending portion provided at the other end of the second connecting portion and extending from the second connecting portion in the second direction;
The other metal plate has a third fitting portion into which the third extending portion is fitted, and a fourth fitting portion into which the fourth extending portion is fitted,
The third extending portion includes a third extending portion main body extending in the first direction, and a third protruding portion protruding in a direction including a component in a direction in which the terminal extends from the third extending portion main body. And
The fourth extension part is a fourth extension part protruding in a direction including a fourth extension part main body extending in the second direction and a component in a direction in which the terminal extends from the fourth extension part main body. Have
The third fitting portion has a third recess in which the third protrusion is accommodated,
The fourth fitting portion has a fourth recess in which the fourth protrusion is accommodated,
By pressing the tip side of the third extension part body from the third protrusion and deforming the third extension part body, at least the tip of the third extension part body is inserted into the third fitting part. And the end of the third protrusion on the terminal side abuts on the third recess,
By pressing the tip end side of the fourth extending portion main body of the fourth extending portion main body to deform the fourth extending portion main body, at least the tip of the fourth extending portion main body is fitted into the fourth fitting And an end of the fourth projecting portion on the terminal side may contact the fourth recess.

In the lead frame according to the present invention,
The third protrusion has a pair of third protrusions extending from both sides of the third extension body.
The fourth projecting portion may have a pair of fourth projecting portions extending from both sides of the fourth extending portion main body.

In the lead frame according to the present invention,
The third extending portion and the third fitting portion have a third positioning structure for positioning each other's position,
The fourth extension part and the fourth fitting part may have a fourth positioning structure for positioning the positions of each other.

In the lead frame according to the present invention,
The first direction and the second direction may be orthogonal to the direction in which the terminal extends.

The lead frame manufacturing method according to the present invention includes:
A terminal, a first connecting part connected to the terminal, a first extending part provided at one end of the first connecting part and extending in the first direction from the first connecting part, and a first connecting part One metal plate having a second extending portion provided in the other end and extending from the first connecting portion in a second direction including a component opposite to the first direction, and the first extending portion A first fitting portion into which the second extending portion is fitted, and another metal plate having the second fitting portion into which the second extending portion is fitted, and a joining step for joining together.
The first extending portion protrudes in a direction including a first extending portion main body extending in the first direction and a component in a direction in which the terminal extends from the first extending portion main body. And
The second extending portion protrudes in a direction including a second extending portion main body extending in the second direction and a component in a direction in which the terminal extends from the second extending portion main body. Have
The first fitting portion has a first recess in which the first protrusion is accommodated;
The second fitting portion has a second recess in which the second protrusion is accommodated;
The joining step includes
The first extension portion main body is deformed by pressing the front end side of the first extension portion main body with respect to the first projecting portion, so that at least the front end of the first extension portion main body is fitted into the first fitting portion. And abutting an end of the first protrusion on the terminal side with the first recess, and
The second extension portion main body is deformed by pressing the distal end side of the second extension portion main body with respect to the second projecting portion, so that at least the distal end of the second extension portion main body is fitted into the second fitting portion. And abutting an end of the second protrusion on the terminal side with the second recess, and
Have

  In the present invention, the first extension portion main body is deformed by pressing the front end side of the first extension portion main body with respect to the first projecting portion, so that at least the front end of the first extension portion main body is the first fitting portion. The first extending portion main body is caulked with respect to the first fitting portion and positioned. At this time, the first protrusion moves to the terminal side, and the end of the first protrusion on the terminal side comes into contact with the first recess. Further, by pressing the tip side of the second extension portion body relative to the second projecting portion to deform the second extension portion body, at least the tip end of the second extension portion body contacts the second fitting portion. In contact therewith, the second extending portion main body is caulked with respect to the second fitting portion and positioned. At this time, the second protrusion moves to the terminal side, and the end of the second protrusion on the terminal side comes into contact with the second recess. As described above, according to the present invention, when the first extending portion main body is caulked and positioned with respect to the first fitting portion, the end portion on the terminal side of the first projecting portion comes into contact with the first concave portion. Further, when the second extending portion main body is caulked and positioned with respect to the second fitting portion, the end portion on the terminal side of the second protruding portion comes into contact with the second concave portion. For this reason, when joining one metal plate and the other metal plate to make one metal plate, it is possible to prevent one metal plate from warping.

FIG. 1 is an upper plan view showing one metal plate of a lead frame according to an embodiment of the present invention. FIG. 2 is an upper plan view showing the other metal plate of the lead frame according to the embodiment of the present invention. FIG. 3 is an upper plan view showing an aspect in which a part of the lead frame with mounted parts according to the embodiment of the present invention is placed in a mold. FIG. 4 is an enlarged top plan view showing a state in which each of the first extension portion and the third extension portion is joined to the first insertion portion and the third insertion portion in the lead frame according to the embodiment of the present invention. It is. FIG. 5 is an enlarged top plan view showing a state in which each of the second extending portion and the fourth extending portion is joined to the second fitting portion and the fourth fitting portion in the lead frame according to the embodiment of the present invention. It is.

Embodiment << Configuration >>
DESCRIPTION OF EMBODIMENTS Embodiments relating to a lead frame and a lead frame manufacturing method according to the present invention will be described below with reference to the drawings. Here, FIG. 1 to FIG. 5 are diagrams for explaining an embodiment of the present invention.

  As shown in FIG. 3, the lead frame with mounted parts of the present embodiment includes one metal plate 10 having a plurality of terminals 15 and the other metal plate 50 joined to one metal plate 10. ing. Of these, one metal plate 10 is plated on the entire surface. On the other metal plate 50, a mounting substrate 90 on which a mounting component 91 such as an IC chip is placed is installed. As a result, the mounting component 91 is placed on the other metal plate 50 via the mounting substrate 90. Further, each terminal 15 of one metal plate 10 and a circuit (not shown) on the mounting component 91 or the mounting substrate 90 are connected by a wire 96.

  The other metal plate 50 is, for example, a copper plate, and the one metal plate 10 is formed by plating a metal plate made of, for example, a phosphor bronze material. With respect to the plating applied to one metal plate 10, a first plating such as tin plating is applied to the distal end side (upper side in FIG. 1) of the terminal 15, and a nickel plating or the like is applied to other portions. Bi-plating is applied. More specifically, the second plating such as nickel plating is first applied to the entire one metal plate 10, and then the first plating such as tin plating is applied to the tip side of the terminal 15.

  As shown in FIG. 1, one metal plate 10 is provided with a first connecting portion 11 connected to a plurality of terminals 15 and one end of the first connecting portion 11 (the right end portion in FIG. 1). A first extending portion 12 extending in the first direction (right direction in FIG. 1) from the connecting portion 11 and the first connecting portion 11 provided at the other end (left end portion in FIG. 1) of the first connecting portion 11. And a second extending portion 13 extending in a second direction including a component in a direction opposite to the first direction. In the present embodiment, the following description will be made assuming that the second direction is opposite to the first direction. However, it should be noted that this is only an example. In the present embodiment, the first direction and the second direction will be described below assuming that each of the first direction and the second direction is orthogonal to the direction in which the terminal 15 extends (the vertical direction in FIG. 1). However, this is also an example only. Some things need to be noted.

  As shown in FIG. 2, the other metal plate 50 of the present embodiment includes a first fitting portion 62 into which the first extending portion 12 is fitted, and a second fitting portion 63 into which the second extending portion 13 is fitted. have.

  As shown in FIG. 1, the first extension part 12 of one metal plate 10 has a first extension part body 12a extending in the first direction, and a terminal 15 extending from the first extension part body 12a. And a first projecting portion 31 projecting in a direction including a component in a direction (vertical direction in FIG. 1). Moreover, the 2nd extension part 13 of one metal plate 10 contains the component of the direction where the terminal 15 extends from the 2nd extension part main body 13a extended in the 2nd direction, and the 2nd extension part main body 13a. It has the 2nd protrusion part 32 protruded in the direction. In the present embodiment, the first protrusion 31 and the second protrusion 32 are described below as protruding in the direction in which the terminal 15 extends (the vertical direction in FIG. 1), but this is only an example. Some things need to be noted.

  As shown in FIG. 2, the first fitting portion 62 of the other metal plate 50 has a first recess 41 in which the first protrusion 31 is accommodated, and the second fitting portion 63 of the other metal plate 50 is the second. It has the 2nd recessed part 42 in which the protrusion part 32 is accommodated.

  In the present embodiment, the first extension portion main body 12a is deformed by pressing the front end side (the right side in FIG. 4) of the first extension portion 31 and deforming the first extension portion main body 12a. At least the distal end of the main part 12a is in contact with the first fitting portion 62, and the terminal 15 side (left side in FIG. 4) end of the first protrusion 31 is in contact with the first recess 41. . More specifically, by pressing the first enlarged portion 17 described later to deform the first enlarged portion 17, at least the tip of the first enlarged portion 17 abuts on the first accommodating portion 67 described later, and The end of the first protrusion 31 on the terminal 15 side comes into contact with the first recess 41.

  Further, the second extending portion main body 13a is deformed by pressing the tip end side (left side in FIG. 5) of the second extending portion main body 13a with respect to the second projecting portion 32 to deform the second extending portion main body 13a. At least the tip of the second projection part 32 comes into contact with the second fitting part 63, and the terminal part 15 side (right side in FIG. 5) of the second projection part 32 comes into contact with the second recessed part 42. More specifically, by pressing the second enlarged portion 19 described later to deform the second enlarged portion 19, at least the tip of the second enlarged portion 19 abuts on the second accommodating portion 69 described later, and The end of the second protrusion 32 on the terminal 15 side comes into contact with the second recess 42.

  As shown in FIG. 1, the 1st protrusion part 31 of this Embodiment has a pair of 1st protrusion part 31a, 31b extended from the both sides of the 1st extension part main body 12a. Moreover, the 2nd protrusion part 32 has a pair of 2nd protrusion part 32a, 32b extended from the both sides of the 2nd extension part main body 13a.

  As shown in FIG. 1, the first extending portion 12 has a first reduced portion 16 having a narrow width, and extends from the first reduced portion 16 to the distal end side so as to be wider than the first reduced portion 16. And a first enlarged portion 17. Further, as shown in FIG. 2, the first fitting portion 62 includes a pair of first convex portions 66 provided on the first fitting portion 62 and corresponding to the first reduction portion 16, and a first fitting portion corresponding to the first enlargement portion 17. And an accommodating portion 67. And the 1st reduction part 16 is positioned between a pair of 1st convex parts 66, and the 1st expansion part 17 is engage | inserted by the 1st accommodating part 67, The 1st extension part 12 and the 1st insertion part 62 are inserted. Are positioned relative to each other. As described above, the first extending portion 12 and the first fitting portion 62 have a first positioning structure including the first reduced portion 16, the first enlarged portion 17, the first convex portion 66, and the first accommodating portion 67. ing.

  Further, as shown in FIG. 1, the second extending portion 13 includes a second reduced portion 18 having a narrow width, and extends from the second reduced portion 18 to the distal end side and has a width wider than that of the second reduced portion 18. It has the 2nd enlarged part 19 which became thick. Further, as shown in FIG. 2, the second fitting portion 63 includes a pair of second convex portions 68 provided in the second fitting portion 63 and corresponding to the second reducing portion 18, and a second fitting portion 63 corresponding to the second expanding portion 19. And two accommodating portions 69. Then, the second reduced portion 18 is positioned between the pair of second convex portions 68, and the second enlarged portion 19 is fitted into the second accommodating portion 69, whereby the second extending portion 13 and the second fitting portion 63. Are positioned relative to each other. As described above, the second extending portion 13 and the second fitting portion 63 have a second positioning structure including the second reduced portion 18, the second enlarged portion 19, the second convex portion 68, and the second accommodating portion 69. ing.

  Further, as shown in FIG. 1, one metal plate 10 is provided at the second connecting portion 21 connected to the plurality of terminals 15 and one end of the second connecting portion 21 (the right end portion in FIG. 1). A third extending portion 22 extending in the first direction from the second connecting portion 21 and the other end of the second connecting portion 21 (the left end portion in FIG. 1) are provided in the second direction from the second connecting portion 21. The fourth extended portion 23 extends. Further, as shown in FIG. 2, the other metal plate 50 has a third fitting portion 72 into which the third extending portion 22 is fitted and a fourth fitting portion 73 into which the fourth extending portion 23 is fitted. ing.

  As shown in FIG. 1, the third extension part 22 of one metal plate 10 has a third extension part body 22a extending in the first direction, and a terminal 15 extending from the third extension part body 22a. A third projecting portion 33 projecting in a direction including a direction component. Moreover, the 4th extension part 23 of one metal plate 10 contains the component of the direction where the terminal 15 extends from the 4th extension part main body 23a extended in the 2nd direction, and the 4th extension part main body 23a. It has the 4th protrusion part 34 protruded in the direction. In the present embodiment, the following description will be made assuming that the third projecting portion 33 and the fourth projecting portion 34 project in the direction in which the terminal 15 extends (the vertical direction in FIG. 1), but this is merely an example. Care must be taken.

  As shown in FIG. 2, the third fitting portion 72 of the other metal plate 50 has a third recess 43 in which the third protrusion 33 is accommodated, and the fourth fitting portion 73 of the other metal plate 50 is the fourth. It has the 4th recessed part 44 in which the protrusion part 34 is accommodated.

  Then, at least the third extension portion main body is deformed by pressing the distal end side (the right side in FIG. 4) of the third extension portion main body 22a with respect to the third protrusion portion 33 to deform the third extension portion main body 22a. The distal end of 22 a is in contact with the third fitting portion 72, and the end of the third protrusion 33 on the terminal 15 side (left side in FIG. 4) is in contact with the third recess 43. More specifically, by pressing the third enlarged portion 27 described later to deform the third enlarged portion 27, at least the tip of the third enlarged portion 27 abuts on the third accommodating portion 77 described later, and The end of the third protrusion 33 on the terminal 15 side comes into contact with the third recess 43.

  Further, at least the fourth extending portion main body 23a is deformed by pressing the front end side (left side in FIG. 5) of the fourth extending portion main body 23a of the fourth extending portion main body 23a to deform the fourth extending portion main body 23a. The tip of 23 a is in contact with the fourth fitting portion 73, and the end of the fourth protrusion 34 on the terminal 15 side (right side in FIG. 5) is in contact with the fourth recess 44. More specifically, by pressing a fourth enlarged portion 29 described later to deform the fourth enlarged portion 29, at least the tip of the fourth enlarged portion 29 abuts on a fourth accommodating portion 79 described later, and The end of the fourth protrusion 34 on the terminal 15 side is in contact with the fourth recess 44.

  As shown in FIG. 1, the third protruding portion 33 of the present embodiment has a pair of third protruding portions 33a and 33b extending from both sides of the third extending portion main body 22a. Moreover, the 4th protrusion part 34 has a pair of 4th protrusion part 34a, 34b extended from the both sides of the 4th extension part main body 23a.

  As shown in FIG. 1, the third extending portion 22 has a third reduced portion 26 having a narrow width, and extends from the third reduced portion 26 to the distal end side, and is wider than the third reduced portion 26. And a third enlarged portion 27. Further, as shown in FIG. 2, the third fitting portion 72 includes a pair of third convex portions 76 provided on the third fitting portion 72 and corresponding to the third reduced portion 26, and a third corresponding to the third enlarged portion 27. And three accommodating portions 77. And the 3rd reduction part 26 is positioned between a pair of 3rd convex parts 76, and the 3rd expansion part 27 is fitted in the 3rd accommodating part 77, The 3rd extension part 22 and the 3rd fitting part 72 are inserted. Are positioned relative to each other. As described above, the third extending portion 22 and the third fitting portion 72 have a third positioning structure including the third reduced portion 26, the third enlarged portion 27, the third convex portion 76, and the third accommodating portion 77. ing.

  Further, as shown in FIG. 1, the fourth extending portion 23 has a fourth reduced portion 28 with a narrow width, and extends from the fourth reduced portion 28 to the distal end side and has a width wider than that of the fourth reduced portion 28. The fourth enlarged portion 29 is thickened. Further, as shown in FIG. 2, the fourth fitting portion 73 includes a pair of fourth convex portions 78 provided on the fourth fitting portion 73 and corresponding to the fourth reduction portion 28, and the fourth fitting portion 73 corresponding to the fourth enlargement portion 29. And four accommodating portions 79. And the 4th reduction part 28 is positioned between a pair of 4th convex parts 78, and the 4th expansion part 29 is engage | inserted by the 4th accommodating part 79, and the 4th extension part 23 and the 4th insertion part 73 are carried out. Are positioned relative to each other. As described above, the fourth extending portion 23 and the fourth fitting portion 73 have a fourth positioning structure including the fourth reducing portion 28, the fourth expanding portion 29, the fourth convex portion 78, and the fourth accommodating portion 79. ing.

<Effects and manufacturing method>
Next, effects achieved by the present embodiment having the above-described configuration will be described. In the following, a method for manufacturing a semiconductor device including the mounting component 91 encapsulated with resin using the one metal plate 10 and the other metal plate 50 described above will also be described.

  First, an effect relating to the lead frame obtained by joining one metal plate 10 and the other metal plate 50 to each other will be described.

  In general, the electrical conductivity and the elastic modulus are inversely related, and the copper material having a high electrical conductivity has a low elastic modulus, while the copper material having a high elastic modulus and a spring property has a low electrical conductivity. For this reason, it has been difficult to achieve both of them with a conventional lead frame made of one material.

  For this reason, the inventor of this application considered using what joined two types of metal plates from which a material differs as a lead frame. Then, the metal plate was plated. However, the inventors of the present application faced the problem that when the metal plate plated in this way is used, reflowing (reflow soldering) causes the plating to remelt. When the plating is remelted in this way, the underlying metal may be exposed or irregularities may be formed on the surface, which may cause mounting defects.

  In this regard, according to the present embodiment, one metal plate 10 is plated, and the other metal plate 50 is connected to a mounting substrate 90 on which a mounting component 91 such as an IC chip is reflow soldered. Therefore, by reflowing only the other metal plate 50 and the mounting substrate 90, it is not necessary to reheat the plated metal plate 10 and remelt the plating. For this reason, it is possible to avoid re-melting the plating of one metal plate 10, and as a result, it is possible to prevent a mounting defect from occurring.

  When plating the entire lead frame, it is conceivable that the lead frame wound in a roll shape is fed out and immersed in a plating solution to be plated, and then wound again in a roll shape. However, the entire lead frame is bent (coil set is generated) because it is wound in a roll shape in this way, and there is a possibility that an assembly failure in the process and a dimensional accuracy in a finished product are affected. In this regard, according to the present embodiment, since only one metal plate 10 is plated and the other metal plate 50 is not plated, the inconvenience due to bending can be minimized. In addition, since only one metal plate 10 is bent as described above, it does not require much labor to correct the bending.

  Further, when a terminal 15 such as a press-fit pin is provided at the tip of the lead frame, high positional accuracy is required for the tip of the terminal 15, and in such a case, higher dimensional accuracy is required. Is done. In this regard, in the present embodiment, one metal plate 10 is positioned with respect to the other metal plate 50 by various methods as described later. For this reason, according to this Embodiment, the request | requirement of high dimensional accuracy can be satisfy | filled.

  Next, a semiconductor device manufacturing method will be described with reference to effects achieved by the lead frame and the lead frame manufacturing method according to the present embodiment.

  First, one metal plate 10 plated on the entire surface and the other metal plate 50 are prepared. In the present embodiment, the mounting board 90 on which the mounting component 91 is placed is connected to the other metal plate 50 at this time.

  Next, the first extending portion 12 is positioned in the first fitting portion 62, the second extending portion 13 is positioned in the second fitting portion 63, and the third extending portion 22 is in the third fitting portion 72. The fourth extending portion 23 is positioned in the fourth fitting portion 73 (see FIGS. 1 and 2).

  In the present embodiment, the first contracting portion 16 is positioned between the pair of first convex portions 66, whereby the first extending portion 12 and the first fitting portion 62 are positioned relative to each other. Moreover, the 2nd reduction part 18 is positioned between a pair of 2nd convex parts 68, and the 2nd extension part 13 and the 2nd fitting part 63 are positioned mutually. Moreover, the 3rd reduction part 26 is positioned between a pair of 3rd convex parts 76, and the 3rd extension part 22 and the 3rd fitting part 72 are positioned mutually. Moreover, the 4th reduction part 28 is positioned between a pair of 4th convex parts 78, and the 4th extension part 23 and the 4th fitting part 73 are positioned with respect to each other. For this reason, according to the present embodiment, one metal plate 10 can be positioned with respect to the other metal plate 50 in a simple manner. Moreover, in this Embodiment, since one metal plate 10 can be positioned with respect to the other metal plate 50 in the four corners of one metal plate 10, accurate positioning can be expected.

  Next, the first enlarged portion 17 of the first extending portion 12 is pressed. As the first enlarged portion 17 is pressed in this manner, the first enlarged portion 17 extends and is caulked against the first accommodating portion 67. As a result, the positioning of the first extending portion 12 with respect to the first fitting portion 62 is performed. Similarly, the second enlarged portion 19 of the second extending portion 13 is pressed. When the second enlarged portion 19 is pressed in this way, the second enlarged portion 19 is extended and caulked against the second accommodating portion 69. As a result, positioning of the second extending portion 13 with respect to the second fitting portion 63 is performed. Similarly, the third enlarged portion 27 of the third extending portion 22 is pressed. When the third enlarged portion 27 is pressed in this manner, the third enlarged portion 27 extends and is caulked against the third accommodating portion 77. As a result, the positioning of the third extending portion 22 with respect to the third fitting portion 72 is performed. Similarly, the fourth enlarged portion 29 of the fourth extending portion 23 is pressed. By pressing the fourth enlarged portion 29 in this way, the fourth enlarged portion 29 is extended and caulked against the fourth accommodating portion 79. As a result, positioning of the fourth extending portion 23 with respect to the fourth fitting portion 73 is performed.

  As described above, in the present embodiment, the first extended portion 17 is deformed by pressing the distal end side of the first extending portion main body 12a from the first protruding portion 31, that is, the first enlarged portion 17. At least the distal end of the first enlarged portion 17 abuts on the first accommodating portion 67, and the first extending portion main body 12a is positioned by being caulked with respect to the first fitting portion 62. The part 31 moves to the terminal 15 side, and the end of the first projecting part 31 on the terminal 15 side comes into contact with the first recess 41. Further, in the present embodiment, the second extended portion 19 is deformed by pressing the distal end side of the second extending portion main body 13a from the second projecting portion 32, that is, the second enlarged portion 19 to deform the second enlarged portion 19. At least the distal end of the enlarged portion 19 abuts against the second accommodating portion 69 and the second extending portion main body 13a is positioned by being caulked with respect to the second fitting portion 63. It moves to the terminal 15 side, and the end of the second protrusion 32 on the terminal 15 side comes into contact with the second recess 42.

  That is, according to the present embodiment, when the first enlarged portion 17 of the first extension portion main body 12a is caulked and positioned with respect to the first accommodating portion 67, the end of the first projecting portion 31 on the terminal 15 side. A part can contact | abut to the 1st recessed part 41, and it can prevent that force is transmitted to the 1st connection part 11 side. Further, when the second enlarged portion 19 of the second extension portion main body 13 a is caulked and positioned with respect to the second accommodating portion 69, the end portion on the terminal 15 side of the second protruding portion 32 contacts the second concave portion 42. It is possible to prevent the force from being transmitted to the first connecting portion 11 side. For this reason, when one metal plate 10 is caulked to the other metal plate 50, it is possible to prevent the one metal plate 10 from being warped.

  In the present embodiment, the third extension portion 27 is deformed by pressing the third extension portion 27 by pressing the tip side of the third extension portion main body 22a from the third protrusion 33, that is, the third extension portion 27. At least the distal end of the enlarged portion 27 abuts against the third accommodating portion 77, and the third extending portion main body 22a is caulked and positioned with respect to the third fitting portion 72. At this time, the third protruding portion 33 is It moves to the terminal 15 side, and the end of the third protrusion 33 on the terminal 15 side contacts the third recess 43. Further, at least the distal end of the fourth enlarged portion 29 by deforming the fourth enlarged portion 29 by pressing the fourth enlarged portion 29 by pressing the fourth enlarged portion 29 in the fourth extending portion main body 23a. Is in contact with the fourth accommodating portion 79, and the fourth extending portion main body 23a is caulked and positioned with respect to the fourth fitting portion 73. At this time, the fourth projecting portion 34 moves to the terminal 15 side. The end of the fourth protrusion 34 on the terminal 15 side comes into contact with the fourth recess 44.

  That is, according to the present embodiment, when the third enlarged portion 27 of the third extending portion main body 22a is caulked and positioned with respect to the third accommodating portion 77, the end of the third projecting portion 33 on the terminal 15 side. It can prevent that a part contact | abuts to the 3rd recessed part 43 and a force is transmitted to the 2nd connection part 21 side. Further, when the fourth enlarged portion 29 of the fourth extending portion main body 23 a is caulked and positioned with respect to the fourth accommodating portion 79, the end portion on the terminal 15 side of the fourth projecting portion 34 contacts the fourth concave portion 44. It is possible to prevent the force from being transmitted to the second connecting portion 21 side. For this reason, when one metal plate 10 is caulked to the other metal plate 50, it is possible to prevent the one metal plate 10 from being warped.

  Moreover, according to this Embodiment, each of the 1st extension part 12, the 2nd extension part 13, the 3rd extension part 22, and the 4th extension part 23 is made into the 1st fitting part 62 and the 2nd fitting part. It crimps with respect to the part 63, the 3rd fitting part 72, and the 4th fitting part 73. FIG. For this reason, since one metal plate 10 can be positioned with higher accuracy with respect to the other metal plate 50 at the four corners of one metal plate 10, more accurate positioning can be expected.

  Moreover, according to this Embodiment, the 1st protrusion part 31 has a pair of 1st protrusion part 31a, 31b extended from the both sides of the 1st extension part main body 12a. For this reason, when the 1st expansion part 17 of the 1st extension part main body 12a is caulked and positioned with respect to the 1st accommodating part 67, one metal plate 10 will rotate with respect to the other metal plate 50. FIG. Can be prevented. That is, even when only one first protrusion 31 is provided or when there are a plurality of first protrusions 31, all the first protrusions 31 are located on one side of the first extension body 12a. When only the first enlarged portion 17 of the first extension portion main body 12a is caulked and positioned with respect to the first accommodating portion 67, the terminal 15 side of one first projecting portion 31 is provided. Since only the end of the first protrusion 31 provided only on one side or the terminal 15 side of the first protrusion 31 abuts the first recess 41, one metal plate 10 is in contact with the other metal plate 50. There is a possibility of rotating. On the other hand, the first protrusion 31 has a pair of first protrusions 31a and 31b extending from both sides of the first extension main body 12a as in the present embodiment. When the enlarged portion 17 is caulked and positioned with respect to the first accommodating portion 67, each of the pair of first projecting portions 31a and 31b extending from both sides of the first extending portion main body 12a comes into contact with the first recessed portion 41. One metal plate 10 can be prevented from rotating with respect to the other metal plate 50.

  Moreover, in this Embodiment, the 2nd protrusion part 32 also has a pair of 2nd protrusion part 32a, 32b extended from the both sides of the 2nd extension part main body 13a. For this reason, when the second enlarged portion 19 of the second extending portion main body 13a is caulked and positioned with respect to the second accommodating portion 69 for the same reason as described with respect to the first projecting portion 31, one of the metals It is possible to prevent the plate 10 from rotating with respect to the other metal plate 50. Similarly, the 3rd protrusion part 33 also has a pair of 3rd protrusion part 33a, 33b extended from the both sides of the 3rd extension part main body 22a. For this reason, when the third enlarged portion 27 of the third extending portion main body 22a is caulked and positioned with respect to the third accommodating portion 77 for the same reason as described with respect to the first protruding portion 31, one of the metals It is possible to prevent the plate 10 from rotating with respect to the other metal plate 50. Similarly, in the present embodiment, the fourth projecting portion 34 also has a pair of fourth projecting portions 34a and 34b extending from both sides of the fourth extending portion main body 23a. For this reason, when the fourth enlarged portion 29 of the fourth extending portion main body 23a is caulked and positioned with respect to the fourth accommodating portion 79 for the same reason as described for the first projecting portion 31, one of the metals It is possible to prevent the plate 10 from rotating with respect to the other metal plate 50.

  As described above, each of the first extension part 12, the second extension part 13, the third extension part 22, and the fourth extension part 23 is replaced with the first insertion part 62, the second insertion part 63, and the third extension part 23. After caulking the fitting portion 72 and the fourth fitting portion 73, the first extension portion 12 is welded to the first fitting portion 62 by, for example, a laser, and the second extension portion 13 is welded to the second fitting portion 63. For example, the third extending portion 22 is welded to the third fitting portion 72 by, for example, a laser, and the fourth extending portion 23 is welded to the fourth fitting portion 73 by, for example, a laser. . As a result, one metal plate 10 is joined to the other metal plate 50.

  Next, each terminal 15 of one metal plate 10 and a circuit (not shown) on the mounting component 91 or the mounting substrate 90 are connected by a wire 96 (see FIG. 3).

  Next, the mounting component 91 on the lead frame is surrounded by the mold 100 (see FIG. 3). Thereafter, resin is poured into the mold 100, whereby the mounting component 91 is sealed with resin.

  Next, the resin poured into the mold 100 is cured to complete a semiconductor device including the mounting component 91 encapsulated with the resin. Note that the mold 100 is removed after the resin is cured.

  As described above, a semiconductor device including the mounting component 91 encapsulated with resin is manufactured.

  Lastly, the description of the above-described embodiment and the disclosure of the drawings are merely examples for explaining the invention described in the claims, and are based on the description of the above-described embodiment or the disclosure of the drawings. The invention described in the claims is not limited.

DESCRIPTION OF SYMBOLS 10 One metal plate 11 1st connection part 12 1st extension part 12a 1st extension part main body 13 2nd extension part 13a 2nd extension part main body 15 Terminal 21 2nd connection part 22 3rd extension part 22a 3rd extension part main body 23 4th extension part 23a 4th extension part main body 31 1st protrusion part 31a, 31b 1st protrusion part 32 2nd protrusion part 32a, 32b 2nd protrusion part 33 3rd protrusion part 33a, 33b 3rd protrusion part 34 4th protrusion part 34a, 34b 4th protrusion part 41 1st recessed part 42 2nd recessed part 43 3rd recessed part 44 4th recessed part 50 The other metal plate 62 1st fitting part 63 2nd fitting part 72 1st Third fitting portion 73 Fourth fitting portion 91 Mounting component 100 Mold

Claims (8)

One metal plate having terminals;
The other metal plate that is joined to the one metal plate and on which the mounting component is placed,
The one metal plate includes a first connecting part connected to the terminal, a first extending part provided at one end of the first connecting part and extending in a first direction from the first connecting part, and the first A second extending portion provided at the other end of the one connecting portion and extending from the first connecting portion in a second direction including a component opposite to the first direction;
The other metal plate has a first fitting part into which the first extension part is fitted, and a second fitting part into which the second extension part is fitted,
The first extension part is a first extension part protruding in a direction including a first extension part main body extending in the first direction and a component in a direction in which the terminal extends from the first extension part main body. And
The second extension part is a second extension part projecting in a direction including a second extension part body extending in the second direction and a component in a direction in which the terminal extends from the second extension part body. Have
The first fitting portion has a first recess in which the first protrusion is accommodated,
The second fitting portion has a second recess in which the second protrusion is accommodated,
The first extension portion main body is deformed by pressing the front end side of the first extension portion main body with respect to the first projecting portion, so that at least the front end of the first extension portion main body is the first fitting. And the end of the first projecting portion on the terminal side contacts the first recess,
By pressing the tip end side of the second extending portion main body from the second projecting portion to deform the second extending portion main body, at least the tip of the second extending portion main body is fitted into the second fitting portion. And a terminal frame end of the second projecting portion is in contact with the second recess. The first protrusion has a pair of first protrusions extending from both sides of the first extension body,
2. The lead frame according to claim 1, wherein the second projecting portion has a pair of second projecting portions extending from both sides of the second extending portion main body. The first extending portion and the first fitting portion have a first positioning structure for positioning each other's position,
3. The lead frame according to claim 1, wherein the second extending portion and the second fitting portion have a second positioning structure for positioning each other. The one metal plate includes a second connecting part connected to the terminal, a third extending part provided at one end of the second connecting part and extending in the first direction from the second connecting part, A fourth extending portion provided at the other end of the second connecting portion and extending from the second connecting portion in the second direction;
The other metal plate has a third fitting portion into which the third extending portion is fitted, and a fourth fitting portion into which the fourth extending portion is fitted,
The third extending portion includes a third extending portion main body extending in the first direction, and a third protruding portion protruding in a direction including a component in a direction in which the terminal extends from the third extending portion main body. And
The fourth extension part is a fourth extension part protruding in a direction including a fourth extension part main body extending in the second direction and a component in a direction in which the terminal extends from the fourth extension part main body. Have
The third fitting portion has a third recess in which the third protrusion is accommodated,
The fourth fitting portion has a fourth recess in which the fourth protrusion is accommodated,
By pressing the tip side of the third extension part body from the third protrusion and deforming the third extension part body, at least the tip of the third extension part body is inserted into the third fitting part. And the end of the third protrusion on the terminal side abuts on the third recess,
By pressing the tip end side of the fourth extending portion main body of the fourth extending portion main body and deforming the fourth extending portion main body, at least the tip of the fourth extending portion main body is fitted into the fourth fitting portion. 4. The lead frame according to claim 1, wherein an end of the fourth projecting portion on the terminal side abuts on the fourth recess. The third protrusion has a pair of third protrusions extending from both sides of the third extension body.
5. The lead frame according to claim 4, wherein the fourth projecting portion includes a pair of fourth projecting portions extending from both sides of the fourth extending portion main body. The third extending portion and the third fitting portion have a third positioning structure for positioning each other's position,
6. The lead frame according to claim 4, wherein the fourth extending portion and the fourth fitting portion have a fourth positioning structure for positioning each other.   The lead frame according to any one of claims 1 to 6, wherein the first direction and the second direction are orthogonal to a direction in which the terminals extend. A terminal, a first connecting part connected to the terminal, a first extending part provided at one end of the first connecting part and extending in the first direction from the first connecting part, and a first connecting part One metal plate having a second extending portion provided in the other end and extending from the first connecting portion in a second direction including a component opposite to the first direction, and the first extending portion A first fitting portion into which the second extending portion is fitted, and another metal plate having the second fitting portion into which the second extending portion is fitted, and a joining step for joining together.
The first extension part is a first extension part protruding in a direction including a first extension part main body extending in the first direction and a component in a direction in which the terminal extends from the first extension part main body. And
The second extension part is a second extension part projecting in a direction including a second extension part body extending in the second direction and a component in a direction in which the terminal extends from the second extension part body. Have
The first fitting portion has a first recess in which the first protrusion is accommodated,
The second fitting portion has a second recess in which the second protrusion is accommodated,
The joining step includes
The first extension portion main body is deformed by pressing the front end side of the first extension portion main body with respect to the first projecting portion, so that at least the front end of the first extension portion main body is fitted into the first fitting portion. And abutting an end of the first protrusion on the terminal side with the first recess, and
The second extension portion main body is deformed by pressing the distal end side of the second extension portion main body with respect to the second projecting portion, so that at least the distal end of the second extension portion main body is fitted into the second fitting portion. And abutting the end portion on the terminal side of the second projecting portion with the second recess, and
A method for manufacturing a lead frame, comprising:

Images