Semiconductor device
First Claim
1. A semiconductor device, comprising an insulating plate on which are mounted semiconductor chips, a resin case enclosing the semiconductor chips, a filler resin filled into the resin case and covering the semiconductor chips and filling in a space between the semiconductor chips and the resin case, a heatsink to which the insulating plate is attached, and means for attaching the insulating plate to the heatsink by using the resin case to press the insulating plate against the heatsink.
1 Assignment
0 Petitions
Accused Products
Abstract
A semiconductor device, suitable for use in an invertor device for large currents in which IGBT chips are used and of which a high reliability is required, has an insulating plate on which are mounted semiconductor chips, a resin case enclosing the semiconductor chips, a filler resin filled into the resin case and covering the semiconductor chips and filling in the space between the semiconductor chips and the resin case, and a heatsink to which the insulating plate is attached, wherein, for purposes of attaching the insulating plate to the heatsink, the resin case is used to press the insulating plate onto the heatsink. Some benefits of this construction are that is makes it possible to eliminate the problem of fatigue failure of a solder layer previously used for attaching the insulating plate to the heatsink by dispensing with that solder layer, while at the same time improving the transfer of heat from the insulating plate to the heatsink, and thereby improving the removal of heat from the device. The construction also makes it possible to reduce cracking of the insulating plate, reduce breakage of mounting portions of the resin case and to use the device to make a small, thin, light and highly reliable invertor device.
-
Citations
15 Claims
- 1. A semiconductor device, comprising an insulating plate on which are mounted semiconductor chips, a resin case enclosing the semiconductor chips, a filler resin filled into the resin case and covering the semiconductor chips and filling in a space between the semiconductor chips and the resin case, a heatsink to which the insulating plate is attached, and means for attaching the insulating plate to the heatsink by using the resin case to press the insulating plate against the heatsink.
-
7. A semiconductor device, comprising:
- an insulating plate on which are mounted semiconductor chips, a resin case enclosing the semiconductor chips, a filler resin filled into the resin case and covering the semiconductor chips and filling in a space between the semiconductor chips and the resin case, and a heatsink to which the insulating plate is attached, wherein the insulating plate and the heatsink are thermally joined by means for applying a contact pressure to the insulating plate to bias it against said heatsink.
-
8. A multiple-phase invertor device having a plurality of circuits, each circuit providing an output of a respective phase of the invertor device, comprising:
- an insulating plate on which are mounted semiconductor chips, a resin case enclosing the semiconductor chips, a filler resin filled into the resin case and covering the semiconductor chips and filling in a space between the semiconductor chips and the resin case, and a heatsink to which the insulating plate is attached, wherein each one of said plurality of circuits respectively corresponds to one phase of the multiple phase invertor device, wherein each circuit includes an insulating plate and a corresponding resin case and wherein each of the insulating plates are pressed against the heatsink by the corresponding resin cases which are fixed to the heatsink with bolts.
-
9. A semiconductor device, comprising:
- an insulating plate on which are mounted semiconductor chips, a resin case enclosing the semiconductor chips, a filler resin filled into the resin case and covering the semiconductor chips and filling in a space between the semiconductor chips and the resin case, and a heatsink to which the insulating plate is attached, wherein the resin case has terminal plates which project from the resin case in directions substantially parallel to the surface of the heatsink, including terminal plates for a gate driving circuit and terminal plates for a power supply circuit which project from one side of the resin case and terminal plates for an output which project from the side of the resin case opposite said one side thereof.
- View Dependent Claims (11)
-
10. A semiconductor comprising:
- an insulating plate on which are mounted semiconductor chips, a resin case enclosing the semiconductor chips, a filler resin filled into the resin case and covering the semiconductor chips and filling in a space between the semiconductor chips and the resin case, and a heatsink to which the insulating plate is attached, wherein two terminal plates for a power supply circuit of the semiconductor chips are provided in the form of flat plates which are mutually superposed with an insulator interposed therebetween and are directly connected and fixed to capacitor terminals outside the resin case.
- View Dependent Claims (12)
-
13. A semiconductor device, comprising:
an insulating plate on which are mounted semiconductor chips, a resin case enclosing the semiconductor chips, a filler resin filled into the resin case and covering the semiconductor chips and filling in a space between the semiconductor chips and the resin case, a heatsink to which the insulating plate is attached, and means for attaching the insulating plate to the heatsink without using solder between the insulating plate and the heatsink by forcibly pressing the insulating plate against the heatsink using the resin case to exert pressing force. - View Dependent Claims (14, 15)
Specification