A semiconductor package includes a first semiconductor chip including a first semiconductor layer, a first through-electrode that penetrates through the first semiconductor layer, a first bonding pad connected to the first through-electrode, and a first insulating bonding layer, and a second semiconductor chip on the first semiconductor chip and including a second semiconductor layer, a second bonding pad bonded to the first bonding pad, and a second insulating bonding layer bonded to the first insulating bonding layer, wherein the first insulating bonding layer includes a first insulating material, the second insulating bonding layer includes a first insulating layer that forms a bonding interface with the first insulating bonding layer and a second insulating layer on the first insulating layer, the first insulating layer includes a second insulating material, different from the first insulating material, and the second insulating layer includes a third insulating material, different from the second insulating material.

An electronic device, an assembly structure and a manufacturing method are provided. The electronic device includes a base portion, a circuit structure, an insulation structure, a first conductive layer, a via structure, a first outer layer and a second outer layer. The circuit structure is disposed on a first surface of the base portion. The insulation structure is disposed on the circuit structure. The first conductive layer is disposed on the insulation structure. The via structure extends through the insulation structure, and electrically connects the first conductive layer and the circuit structure. The first outer layer is disposed on the first conductive layer. The second outer layer is disposed on the first outer layer. The second outer layer includes an oxide material so as to improve a coplanarity of an outermost surface of the second outer layer.