Circuit module
A first sealing resin is disposed between a first lower main surface and a second upper main surface. An upper circuit board first mounting electrode is disposed on the first lower main surface. A lower circuit board first mounting electrode is disposed on the second upper main surface. A first component is mounted on the lower circuit board first mounting electrode and is disposed in the first sealing resin. A first conductor layer is disposed on an upper circuit board. As viewed in the downward direction, a heat conduction member overlaps the first component, is disposed in a space between the first lower main surface and the second upper main surface, and is coupled to the first conductor layer via a conductor. A part of a heat dissipation member is exposed from the first sealing resin in a direction orthogonal to an up-down axis.
1. A circuit module comprising:
an upper circuit board;
a lower circuit board;
a first component;
a first sealing resin;
a heat conduction member;
a first conductor layer; and
a heat dissipation member,
wherein
the upper circuit board includes an upper circuit board body and one or more upper circuit board first mounting electrodes,
the lower circuit board includes a lower circuit board body and one or more lower circuit board first mounting electrodes, and is disposed below the upper circuit board,
the upper circuit board body has a first upper main surface and a first lower main surface,
the lower circuit board body has a second upper main surface and a second lower main surface,
the first sealing resin is disposed between the first lower main surface and the second upper main surface,
the one or more upper circuit board first mounting electrodes are disposed on the first lower main surface,
the one or more lower circuit board first mounting electrodes are disposed on the second upper main surface,
the first component is mounted on the one or more upper circuit board first mounting electrodes or the one or more lower circuit board first mounting electrodes, and is disposed in the first sealing resin,
the first conductor layer is disposed on the upper circuit board or the lower circuit board,
the heat conduction member overlaps the first component as viewed in a downward direction of an up-down axis, is disposed on the first lower main surface, on the second upper main surface, or in a space between the first lower main surface and the second upper main surface, and is directly coupled to the first conductor layer or is coupled to the first conductor layer via a first conductor,
a part of the heat dissipation member is exposed from the first sealing resin in a direction orthogonal to the up-down axis, and
the heat dissipation member is directly coupled to the first conductor layer or is coupled to the first conductor layer via a second conductor.
2. The circuit module according to claim 1 , wherein a thickness of the heat dissipation member in an up-down direction is more than a thickness of the first conductor layer in the up-down direction, the up-down direction extending along the up-down axis.
3. The circuit module according to claim 1 , wherein the heat conduction member is in contact with an upper surface or a lower surface of the first component.
4. The circuit module according to claim 3 , wherein the heat conduction member is a metal pin extending along the up-down axis.
5. The circuit module according to claim 1 , wherein
the first component includes a ground electrode,
the heat conduction member is a ground mounting electrode disposed on the first lower main surface or the second upper main surface, and
the ground electrode is mounted on the ground mounting electrode.
6. The circuit module according to claim 1 , wherein a length of the heat dissipation member in an up-down direction is equal to an interval between the upper circuit board and the lower circuit board, the up-down direction extending along the up-down axis.
7. The circuit module according to claim 1 , further comprising a conductor member,
wherein
the conductor member electrically connects the upper circuit board and the lower circuit board, and
an area of the heat dissipation member as viewed in the downward direction is larger than an area of the conductor member as viewed in the downward direction.
8. The circuit module according to claim 1 , wherein the first conductor layer has a linear shape as viewed in the downward direction.
9. The circuit module according to claim 1 , further comprising a thermal interface material layer,
wherein the thermal interface material layer is disposed between the first component and the heat conduction member, and is in contact with the first component and the heat conduction member.
10. The circuit module according to claim 2 , wherein the heat conduction member is in contact with an upper surface or a lower surface of the first component.
11. The circuit module according to claim 2 , wherein
the first component includes a ground electrode,
the heat conduction member is a ground mounting electrode disposed on the first lower main surface or the second upper main surface, and
the ground electrode is mounted on the ground mounting electrode.
12. The circuit module according to claim 2 , wherein a length of the heat dissipation member in the up-down direction is equal to an interval between the upper circuit board and the lower circuit board.
13. The circuit module according to claim 2 , further comprising a conductor member,
wherein
the conductor member electrically connects the upper circuit board and the lower circuit board, and
an area of the heat dissipation member as viewed in the downward direction is larger than an area of the conductor member as viewed in the downward direction.
14. The circuit module according to claim 2 , wherein the first conductor layer has a linear shape as viewed in the downward direction.
15. The circuit module according to claim 2 , further comprising a thermal interface material layer,
wherein the thermal interface material layer is disposed between the first component and the heat conduction member, and is in contact with the first component and the heat conduction member.