Method for manufacturing semiconductor device

1. A method for manufacturing a semiconductor device by a compression mold method using a compression mold which includes an upper mold and a lower mold, the method comprising:

attaching a sealing material to seal a semiconductor element;

providing a release film in the upper mold or the lower mold facing the semiconductor element; and

curing the sealing material by the upper mold and the lower mold,

wherein a shielding material that shields electromagnetic waves is provided on the release film before providing the release film in the upper mold or the lower mold, the shielding material being provided on a side of the release film coming in contact with the sealing material,

wherein the shielding material comprises a structure in which a metal layer formed by a deposition method or a sputtering method is laminated with an organic film containing an electromagnetic wave shielding composition, and

wherein the shielding material is transferred to the sealing material in the curing of the sealing material.

2. The method for manufacturing the semiconductor device according to claim 1 ,

wherein the metal layer is provided at a position of the release film corresponding to a mounting position of the semiconductor element.

3. The method for manufacturing the semiconductor device according to claim 2 ,

wherein a plurality of semiconductor elements are mounted on a substrate, and

wherein the metal layer is provided on the release film not to be contained in a dicing line which is used when the plurality of semiconductor elements are cut into pieces.

4. A compression mold method for manufacturing a semiconductor device, the method comprising:

providing a semiconductor element in a compression mold including an upper mold and a lower mold, the semiconductor element being provided on a substrate between the upper mold and the lower mold;

forming a metal layer on a release film using a deposition method or a sputtering method, the metal layer being capable of shielding magnetic waves, and then providing the release film on one of the upper mold or the lower mold with the metal layer facing the other of the upper mold or the lower mold;

laminating an organic film on the metal layer, the organic film containing an electromagnetic wave shielding composition, the metal layer being disposed between the release film and the organic film; and

providing a sealing material on the substrate between the upper mold and the lower mold, and then compressing the sealing material around the semiconductor element using the upper mold and the lower mold and curing the sealing material,

wherein the organic film and metal layer are transferred to the sealing material in the curing of the sealing material, and the sealing material seals the semiconductor element.

5. The method for manufacturing the semiconductor device according to claim 1 , wherein the sealing material is compressed and heated when the upper mold and the lower mold are combined together to cure the sealing material.

6. The method for manufacturing the semiconductor device according to claim 1 , wherein the metal layer has a thickness ranging from 0.05 to 3 μm.

7. The method according to claim 4 , wherein the metal layer has a thickness ranging from 0.05 to 3 μm.