Semiconductor package including test pad

1. A semiconductor package comprising:

a base including a first bonding structure; and

a first semiconductor chip, including a second bonding structure, the second bonding structure being coupled to the first bonding structure of the base,

wherein the first bonding structure includes:

a test pad;

a first pad being electrically connected to the test pad; and

a first insulating layer,

wherein the second bonding structure includes:

a second pad being electrically connected to the first pad; and

a second insulating layer being in contact with the first insulating layer and at least a portion of the test pad,

wherein at least a portion of an upper surface of the test pad is in contact with a lower surface of the second insulating layer,

wherein the first bonding structure further includes a pad connection portion electrically connecting the first pad and the test pad to each other, and

wherein the second bonding structure further includes a dummy connection portion, the dummy connection portion being in contact with the pad connection portion.

2. The semiconductor package of claim 1 , wherein at least a portion of the pad connection portion is in contact with the second insulating layer.

3. The semiconductor package of claim 1 , wherein the base includes:

a base body;

a through electrode structure penetrating through the base body; and

a base back side structure disposed on the base body,

wherein the first bonding structure of the base is disposed on the base back side structure, and

wherein the base back side structure includes a base wiring structure electrically connected to the test pad.

4. The semiconductor package of claim 3 , wherein the base body comprises a silicon substrate.

5. The semiconductor package of claim 1 , wherein the base comprises an interposer.

6. The semiconductor package of claim 1 , wherein the base comprises a semiconductor chip.

7. The semiconductor package of claim 1 , wherein the test pad has a width greater than a width of the first pad.

8. The semiconductor package of claim 1 further comprising:

a lower structure disposed below the base; and

a connection structure disposed between the base and the lower structure.

9. The semiconductor package of claim 1 ,

wherein the first semiconductor chip further includes:

a semiconductor body;

an internal circuit wiring under the lower semiconductor body; and

a through electrode structure penetrating through the semiconductor body and electrically connected to the internal circuit wiring and the first pad, and

wherein the semiconductor body is between the internal circuit wiring and the second bonding structure.

10. A semiconductor package comprising:

a base including a first bonding structure; and

a first semiconductor chip, including a second bonding structure, the second bonding structure being coupled to the first bonding structure of the base,

wherein the first bonding structure includes:

a test pad;

a first pad being electrically connected to the test pad; and

a first insulating layer,

wherein the second bonding structure includes:

a second pad being electrically connected to the first pad; and

a second insulating layer being in contact with the first insulating layer and at least a portion of the test pad,

wherein at least a portion of an upper surface of the test pad is in contact with a lower surface of the second insulating layer,

wherein the first bonding structure further includes a pad connection portion electrically connecting the first pad and the test pad to each other,

wherein the second bonding structure further includes a dummy pad portion,

wherein the test pad of the base includes:

a test area; and

a dummy area surrounding the test area, and

wherein the dummy pad portion of the second bonding structure is in contact with the dummy area of the test pad.

11. The semiconductor package of claim 10 , wherein the test area is in contact with the second insulating layer of the first semiconductor chip.