Patent ID: 7872353
Filing Date: 2011-01-18
Classification: H01L

Abstract:
1. A semiconductor device comprising: at least two layers of interlayer-insulator-films stacked above a substrate and at least partially formed by a low-relative-dielectric-constant-film having a relative-dielectric-constant of 3.4 or less respectively; a plurality of wirings provided, wherein at least one wiring is within each of the interlayer-insulator-film and at least partially located within the low-relative-dielectric-constant-films; a plurality of plugs provided, wherein at least one plug is within each of the interlayer-insulator-film and connected to a lower part of the wirings; and a plurality of reinforcement members provided, wherein at least one reinforcement member is within each of the interlayer-insulator-film while being separated from the wirings at a predetermined interval, electrically cut from the wirings and the plugs, and at least partially located within the low-relative-dielectric-constant-films; and wherein, for each of the reinforcement member, a value obtained by dividing an area of a part that is exposed on an upper face of each of the interlayer-insulator-film by a length of a part contacting each of the interlayer-insulator-film of the part that is exposed on the upper face of each of the interlayer-insulator-film is defined to be S; a Young's modulus of a respective layer on which the plug is provided among the interlayer-insulator-films is defined to be E a Young's modulus of a respective layer on which the wiring is provided among the interlayer-insulator-films is defined to be E a Young's modulus of the wirings is defined to be E a film thickness of a respective layer on which the plug is provided among the interlayer-insulator-films is defined to be d a film thickness of a respective layer on which the wiring is provided among the interlayer-insulator-films are defined to be d a coverage of the reinforcement member per unit area in an area in the interlayer-insulator-films where the reinforcement members are provided is defined to be R; and the S, the Ep, the E