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US 8,007,897 B2Granted
Insulating sheet and method for producing it, and power module comprising the insulating sheet
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsHiromi Ito, Naoshi Yamada, Kei Yamamoto, Hirofumi Fujioka, Takumi Kikuchi, Osamu Yashiro
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Abstract
An insulating sheet includes an adhesive component of a thermosetting resin and containing a filler member. Heat conductivity of an adhesive face region of the insulating sheet is smaller than heat conductivity of an inner region of the insulating sheet.
Claims3
An insulating sheet comprising:
- an inner region including a thermosetting resin and a first filler member, the first filler member containing a flattened filler and a granular filler which are mixed;
- and
- an adhesive face region located on at least one side of the inner region, the adhesive face region including a second filler member, the second filler member containing only an electrically insulating flattened filler, wherein
- the insulating sheet is a continuous layer and concentration of the first and second filler members gradually or successively increases in a direction from an adhesive face of the insulating sheet inwardly in the insulating sheet, and
- the insulating sheet is an A-stage or a B-stage laminate.
2 more elements
Dependencies are inferred from the claim text.