Patent ID: 7745936

Claim:
A semiconductor integrated circuit device comprising: a substrate having a first semiconductor memory element formed on the substrate and a second semiconductor memory element formed on the substrate, data memory states of the first and second semiconductor memory elements being changed by the irradiation of light; and a multilayer wiring structure formed on the same side of the substrate as the first and second semiconductor memory elements are formed; wherein the multilayer wiring structure includes: a first transparent area formed from transparent material at a position opposite to a first element area where the first semiconductor memory element is formed, the first transparent area being used as a light guiding path from the outside of the multilayer wiring structure to the first semiconductor memory element; a first shield area continuously formed, in the periphery of the first transparent area, from shielding wiring arranged in several layers, an shielding via plug to connect between the shielding wiring arranged in several layers, and an shielding contact plug to connect the shielding wiring to the substrate; a second transparent area formed from transparent material at a position opposite to a second element area where the second semiconductor memory element is formed, the second transparent area being used as a light guiding path from the outside of the multilayer wiring structure to the second semiconductor memory element; a second shield area continuously formed, in the periphery of the second transparent area and at a position opposite to the second transparent area, from shielding wiring arranged in several layers, an shielding via plug to connect between the shielding wiring arranged in several layers, and an shielding contact plug to connect the shielding wiring to the substrate; and an electrode to control the memory state of the first and second semiconductor memory elements, the electrode being formed on the outside of the first and second shield areas in regard to the first and second transparent areas; and the semiconductor integrated circuit device further comprising a shield member to shield light entering from the outside of the multilayer wiring structure into the first transparent area, the shield member being located on a position opposite to the first transparent area, wherein the shield member is formed continuously with the first shield area.