| CPC H10N 10/17 (2023.02) [H10N 10/817 (2023.02)] | 15 Claims |
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1. A thermoelectric module comprising:
a first metal substrate including a first through-hole;
a first insulating layer including a second through-hole disposed on the first metal substrate;
a first electrode part disposed on the first insulating layer and including a plurality of first electrodes;
a plurality of thermoelectric legs disposed on the first electrode part;
a second electrode part disposed on the plurality of thermoelectric legs and including a plurality of second electrodes;
a second insulating layer disposed on the second electrode part; and
a second metal substrate disposed on the second insulating layer and including a third through-hole, wherein the first metal substrate and the first insulating layer include a first effective region in which the first electrode part is disposed and a first peripheral region surrounding outside of the first effective region such that the first effective region is inside the first peripheral region,
wherein the second metal substrate and the second insulating layer include a second effective region in which the second electrode part is disposed and a second peripheral region surrounding outside of the second effective region such that the second effective region is inside the second peripheral region, wherein a total area of the first peripheral region is greater than a total area of the second peripheral region,
wherein the first metal substrate includes a fourth through-hole formed in the first peripheral region,
wherein the first through-hole and the second through-hole are disposed in the first effective region of the first metal substrate and the first insulating layer,
wherein the first through-hole, the second through-hole and the third through-hole are formed at positions corresponding to each other,
wherein the first metal substrate and the first insulating layer include a first hole arrangement region which does not include any of the plurality of first electrodes, and the first hole arrangement region is a space formed by lines connecting surfaces closest to the second through-hole among surfaces of the first electrodes which are closest to the second through-hole and are disposed adjacent to each other,
wherein intervals between the plurality of first electrodes disposed along a first direction are equal to each other in a region except for the first hole arrangement region, wherein intervals between the plurality of first electrodes disposed along a second direction perpendicular to the first direction are equal to each other in the region except for the first hole arrangement region,
wherein the second through hole is spaced apart from the first electrode which is closest to the second through-hole,
wherein a diameter of the first through-hole on a surface facing the plurality of thermoelectric legs among both surfaces of the first metal substrate is smaller than a diameter of the third through-hole on a surface facing the plurality of the thermoelectric legs among both surfaces of the second metal substrate, and
wherein the diameter of the first through-hole and a diameter of the second through-hole correspond to each other.
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