A semiconductor device provided with a substrate made of material except for semiconductors and having thermal conductivity greater than that of the semiconductor material. The semiconductor device provides, on the support, a metal layer, a primary mesa, and electrodes formed on the primary mesa. The metal layer, which is in contact with the primary mesa, may be made of at least one of tungsten (W), molybdenum (Mo), and tantalum (Ta) with a thickness of the 10 to 60 nm.

A semiconductor device provided with a substrate made of material except for semiconductors and having thermal conductivity greater than that of the semiconductor material. The semiconductor device provides, on the support, a metal layer, a primary mesa, and electrodes formed on the primary mesa. The metal layer, which is in contact with the primary mesa, may be made of at least one of tungsten (W), molybdenum (Mo), and tantalum (Ta) with a thickness of the 10 to 60 nm.

A semiconductor package including: a first wiring structure; a semiconductor chip disposed on the first wiring structure; a second wiring structure disposed on the semiconductor chip and including a cavity; and a filling member between the first wiring structure and the second wiring structure and in the cavity, wherein an uppermost end of the filling member and an uppermost end of the second wiring structure are located at the same level.

A semiconductor package including: a first wiring structure; a semiconductor chip disposed on the first wiring structure; a second wiring structure disposed on the semiconductor chip and including a cavity; and a filling member between the first wiring structure and the second wiring structure and in the cavity, wherein an uppermost end of the filling member and an uppermost end of the second wiring structure are located at the same level.

An electronic device includes a substrate, a first conductive pad and a chip. The first conductive pad is disposed on the substrate. The chip includes a second conductive pad electrically connected to the first conductive pad, and the first conductive pad is disposed between the substrate and the second conductive pad. The first conductive pad has a first groove.

An electronic device includes a substrate, a first conductive pad and a chip. The first conductive pad is disposed on the substrate. The chip includes a second conductive pad electrically connected to the first conductive pad, and the first conductive pad is disposed between the substrate and the second conductive pad. The first conductive pad has a first groove.

A semiconductor package including: a first wiring structure; a semiconductor chip disposed on the first wiring structure; a second wiring structure disposed on the semiconductor chip and including a cavity; and a filling member between the first wiring structure and the second wiring structure and in the cavity, wherein an uppermost end of the filling member and an uppermost end of the second wiring structure are located at the same level.

A semiconductor package including: a first wiring structure; a semiconductor chip disposed on the first wiring structure; a second wiring structure disposed on the semiconductor chip and including a cavity; and a filling member between the first wiring structure and the second wiring structure and in the cavity, wherein an uppermost end of the filling member and an uppermost end of the second wiring structure are located at the same level.

An electronic device includes a substrate, a first conductive pad and a chip. The first conductive pad is disposed on the substrate. The chip includes a second conductive pad electrically connected to the first conductive pad, and the first conductive pad is disposed between the substrate and the second conductive pad. The first conductive pad has a first groove.

An electronic device includes a substrate, a first conductive pad and a chip. The first conductive pad is disposed on the substrate. The chip includes a second conductive pad electrically connected to the first conductive pad, and the first conductive pad is disposed between the substrate and the second conductive pad. The first conductive pad has a first groove.