Heat dissipating structure base board, module using heat dissipating structure base board, and method for manufacturing heat dissipating structure base board
The present invention relates to a heat dissipation structure board and a module using this heat dissipation structure used for purpose required of high reliability such as a hybrid vehicle or an electric vehicle and to a method of manufacturing the heat dissipation structure. A resin structure is disposed on a lead frame constituting a heat dissipation board and an odd-shaped electronic component or the like mounted on this lead frame or the like to cover up the lead frame and the odd-shaped electronic component or the like, and this resin structure is fixed to a metal plate, a chassis of a device and the like to constitute the heat dissipation structure board as a whole, whereby fixing strengths of fixing the lead frame and the odd-shaped electronic component or the like, a bonding strength at an interface between the lead frame and the heat transfer layer and the like can be reinforced.
1. A heat dissipation structure board comprising:
a metal plate;
a heat transfer layer provided on the metal plate;
a lead frame having a terminal part, a portion of the lead frame other than the terminal part being fixedly attached to and arranged within the heat transfer layer;
a resin structure connected to an upper surface of the portion of the lead frame other than the terminal part;
a connection part in which the resin structure is fixed to at least one of the metal plate, the heat transfer layer, a chassis fixing the metal plate and a member to which the chassis is connected;
a guide part guiding a connection wiring and the terminal part, the connection wiring being a part of the terminal part, the connection wiring being formed by peeling up a part of the lead frame so as to protrude perpendicularly from the heat transfer layer; and
a reinforcement part that corresponds to a part of or more than the part of the lead frame, the resin structure abutting on the lead frame in the reinforcement part,
wherein the terminal part is formed at a peripheral edge of the heat transfer layer,
wherein the guide part is a wiring hole into which the connection wiring is inserted, the wiring hole having a tapered guide structure,
wherein a base of the connection wiring is fixed by the resin structure directly, the base of the connection wiring being a part of the lead frame arranged within the heat transfer layer,
and wherein the resin structure has a concave portion in a lower part of a periphery of the resin structure.
2. The heat dissipation structure board according to claim 1 , further comprising a holding part provided in a part of the resin structure and holding at least a part of an odd-shaped electronic component.
3. The heat dissipation structure board according to claim 1 ,
wherein at least one of the connection wiring and the resin structure is formed in a peripheral edge of the heat transfer layer or the heat dissipation structure board.
4. The heat dissipation structure board according to claim 2 ,
wherein the odd-shaped electronic component is insert molded into the resin structure.
5. The heat dissipation structure board according to claim 2 , wherein the lead frame is electrically connected to one or more than one terminal of the odd-shaped electronic component.
6. The heat dissipation structure board according to claim 2 ,
wherein one or more than one connection part of the odd-shaped electronic component is protruded or exposed to a surface-side of the resin structure, the surface-side being out of contact with the metal plate.
7. The heat dissipation structure board according to claim 1 ,
wherein the wiring hole comprises one or more wiring holes formed in the resin structure, and
a part of the connection wiring of the heat dissipation structure board is connectable to an external circuit via the one or more wiring holes.
8. The heat dissipation structure board according to claim 2 ,
wherein the heat dissipation structure board includes a bus bar, the bus bar constituting a part of a wiring pattern of the heat dissipation structure board and holding the part of or more than the part of the odd-shaped electronic component.
9. The heat dissipation structure board according to claim 1 ,
wherein the resin structure includes a plurality of structures holding the connection wiring or a part of or more than the part of a printed circuit board connected to the connection wiring.
10. The heat dissipation structure board according to claim 1 , further comprising:
a bare chip mounted on the lead frame, wherein the resin structure includes a sealing material protecting or sealing the bare chip.
11. The heat dissipation structure board according to claim 1 ,
wherein a metal foil pattern is provided on the heat transfer layer, and
a part of or more than the part of the lead frame includes a connection part electrically connected to the metal foil pattern, and the part of or more than the part of the lead frame is out of contact with the lead frame and a solder part formed on the metal foil pattern by the resin structure.
12. A module comprising:
the heat dissipation structure board according to claim 1 ; and
one or more printed circuit boards almost in parallel to the metal plate, and provided on a surface-side of the resin structure different from a surface-side on which the metal plate is provided,
wherein the printed circuit board is electrically connected to a part of or more than the part of the connection wiring or the terminal part.
13. The module according to claim 12 ,
wherein an odd-shaped electronic component is provided between the metal plate and the resin structure, and the odd-shaped electronic component is electrically connected to at least one of the lead frame and the printed circuit board.
14. A method of manufacturing a heat dissipation structure board according to claim 1 ,
said method comprising:
protruding a part of the lead frame from the heat transfer layer or bending the part of the lead frame almost perpendicularly to the heat transfer layer, thereby providing a connection wiring or a terminal part; and
fixing the resin structure to any one of or more than one of the metal plate and the heat transfer layer, a chassis of a device fixing the metal plate and a member to which the metal plate is connected.
15. The heat dissipation structure board according to claim 2 ,
wherein the wiring hole comprises one or more wiring holes formed in the resin structure, and
a part of the connection wiring of the heat dissipation structure board is connectable to an external circuit via the one or more wiring holes.
16. The heat dissipation structure board according to claim 2 ,
wherein the resin structure includes a plurality of structures holding the connection wiring or a part of or more than the part of a printed circuit board connected to the connection wiring.
17. The heat dissipation structure board according to claim 2 , further comprising:
a bare chip mounted on the lead frame, wherein the resin structure includes a sealing material protecting or sealing the bare chip.
18. The heat dissipation structure board according to claim 3 , further comprising:
a bare chip mounted on the lead frame, wherein the resin structure includes a sealing material protecting or sealing the bare chip.
19. The heat dissipation structure board according to claim 4 , further comprising:
a bare chip mounted on the lead frame, wherein the resin structure includes a sealing material protecting or sealing the bare chip.
20. The heat dissipation structure board according to claim 5 , further comprising:
a bare chip mounted on the lead frame, wherein the resin structure includes a sealing material protecting or sealing the bare chip.
21. The heat dissipation structure board according to claim 6 , further comprising:
a bare chip mounted on the lead frame, wherein the resin structure includes a sealing material protecting or sealing the bare chip.
22. The heat dissipation structure board according to claim 2 ,
wherein a metal foil pattern is provided on the heat transfer layer, and
a part of or more than the part of the lead frame includes a connection part electrically connected to the metal foil pattern, and the part of or more than the part of the lead frame is out of contact with the lead frame and a solder part formed on the metal foil pattern by the resin structure.
23. The heat dissipation structure board according to claim 3 ,
wherein a metal foil pattern is provided on the heat transfer layer, and
a part of or more than the part of the lead frame includes a connection part electrically connected to the metal foil pattern, and the part of or more than the part of the lead frame is out of contact with the lead frame and a solder part formed on the metal foil pattern by the resin structure.
24. The heat dissipation structure board according to claim 4 ,
wherein a metal foil pattern is provided on the heat transfer layer, and
a part of or more than the part of the lead frame includes a connection part electrically connected to the metal foil pattern, and the part of or more than the part of the lead frame is out of contact with the lead frame and a solder part formed on the metal foil pattern by the resin structure.
25. The heat dissipation structure board according to claim 5 ,
wherein a metal foil pattern is provided on the heat transfer layer, and
a part of or more than the part of the lead frame includes a connection part electrically connected to the metal foil pattern, and the part of or more than the part of the lead frame is out of contact with the lead frame and a solder part formed on the metal foil pattern by the resin structure.
26. The heat dissipation structure board according to claim 6 ,
wherein a metal foil pattern is provided on the heat transfer layer, and
a part of or more than the part of the lead frame includes a connection part electrically connected to the metal foil pattern, and the part of or more than the part of the lead frame is out of contact with the lead frame and a solder part formed on the metal foil pattern by the resin structure.