Electronic Device
AssigneeHitachi Automotive Systems, Ltd.
InventorsMina AMO, Nobutake TSUYUNO, Takeshi TOKUYAMA, Toshiya SATOH
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Abstract
An electronic device includes electronic components and an epoxy resin portion which seals the electronic components. The electronic device is disposed in a refrigerant which cools the electronic components. A first layer having a three-dimensional crosslinking structure is formed on a surface or inside of the epoxy resin portion. The first layer is formed such that a length calculated by cube root of an average free volume in the three-dimensional crosslinking structure of the first layer is shorter than a length of the longest side of molecules forming the refrigerant.
Claims10
An electronic device comprising:
- electronic components;
- and
- an epoxy resin portion configured to seal the electronic components,
- the electronic device being disposed in a refrigerant to cool the electronic components,
- wherein a first layer having a three-dimensional crosslinking structure is formed on a surface or inside of the epoxy resin portion, and
- the first layer is formed such that a length calculated by cube root of an average free volume in the three-dimensional crosslinking structure of the first layer is shorter than a length of the longest side of molecules forming the refrigerant.
A manufacturing method for an electronic device comprising electronic components and being disposed in a refrigerant which cools the electronic components,
- the manufacturing method comprising:
- a first process to seal the electronic components by an epoxy resin portion;
- and
- a second process to form a first layer having a three-dimensional crosslinking structure on a surface or inside of the epoxy resin,
- wherein, in the second process, the first layer is formed such that a length calculated by cube root of an average free volume in the three-dimensional crosslinking structure of the first layer is shorter than a length of the longest side of molecules forming the refrigerant.
Dependencies are inferred from the claim text.