摘要:
There is provided a semiconductor device having a wiring structure which reduces possibility of a short circuit, and method of making the device. Besides, there is provided a semiconductor device having high reliability. Further, there is provided a semiconductor device having high yield. A wiring line is formed at one main surface side of a semiconductor substrate, and has a laminate structure of an adjacent conductor layer and a main wiring layer. The main wiring layer contains an added element to prevent migration. The adjacent conductor layer is formed of a material for preventing a main constituent element and the added element of the main wiring layer from diffusing into the substrate beneath the adjacent conductor layer, and the concentration of the added element at a location close to an interface between the adjacent conductor layer and the main wiring layer is low compared to the concentration of the added element in the main wiring layer spaced from the adjacent conductor layer.
摘要:
Diffusion layers 2–5 are formed on a silicon substrate 1, and gate dielectric films 6, 7 and gate electrodes 8, 9 are formed on these diffusion layers 2–5 so as to be MOS transistors. Zirconium oxide or hafnium oxide is used as a major component of gate dielectric films 6, 7. Gate dielectric films 6, 7 are formed, for example, by CVD. As substrate 1, there is used one of which the surface is (111) crystal face so as to prevent diffusion of oxygen into silicon substrate 1 or gate electrodes 8, 9. In case of using a substrate of which the surface is (111) crystal face, diffusion coefficient of oxygen is less than 1/100 of the case in which a silicon substrate of which the surface is (001) crystal face is used, and oxygen diffusion is controlled. Thus, oxygen diffusion is controlled, generation of leakage current is prevented and properties are improved. There is realized a semiconductor device having high reliability and capable of preventing deterioration of characteristics concomitant to miniaturization.
摘要:
A multi-chip module has at least two semiconductor chips. Each of the semiconductor chips has chip electrodes of the semiconductor chip, electrically conductive interconnections for electrically connection with the chip electrodes, electrically conductive lands for electrically connection with the interconnections, external terminals placed on the lands, and a stress-relaxation layer intervening between the lands and the semiconductor chip. The semiconductor chips are placed on a mounting board via the external terminals. The distance between farthest ones of external terminal positioned at an outermost end portions of said second semiconductor chip is smaller than that of the first semiconductor chip.
摘要:
In a production of a semiconductor device, after a step in which a thermosetting resin is thermally cured to seal a semiconductor chip with the resin and before a step in which a characteristic of the semiconductor chip is inspected, the thermosetting resin is baked at a temperature higher than the resin sealing temperature in said resin sealing step.
摘要:
A technique for a semiconductor device is provided that includes forming circuit regions on a device formation region and device isolation regions on a semiconductor substrate, a ratio of the width of a device isolation region to the width of adjacent circuit regions thereto is set at 2 to 50. A design method is also provided and includes conducting measurements such as of thicknesses of a pad oxide film and a nitride film, the internal stress of the nitride film, the width of both device formation and isolation regions, the depth of the etched portion of the nitride film for forming the groove in a device isolation region, conducting stress analysis in the proximity of the groove due to thermal oxidation, and setting values pertaining to the width of the device formation region and of the device isolation region which do not lead to occurrence of dislocation.
摘要:
A semiconductor device superior in heat dissipation in which the exchanging of chips can be readily performed is realized by mounting, through means distinct from bonding or connecting, a LSI chip on an interconnection substrate having substantially no difference in thermal conductivity between the LSI chip and the substrate. The semiconductor device is provided on an interconnection substrate 6 with electrode terminals 7 of cantilever structure, an interconnection layer 8 for electrical connection among the electrode terminals 7, an interconnection layer 12 for electrical connection to outer portions, and fitting portions 9 formed in a cover 5, the substrate 6 and the cover 5 being connected by the fitting portions. The chips 1 and 2 are electrically contacted through the terminals 7 without using any bonding or connecting, so that the mounting and detachment of the cover 5 and the substrate can be readily performed.
摘要:
A semiconductor device free from electric failure in transistors at upper trench edges can be produced by a simplified process comprising basic steps of forming a pad oxide film on the circuit-forming side of a semiconductor substrate; forming an oxidation prevention film on the pad oxide film; removing the oxidation presention film and the pad oxide film at a desired position, thereby exposing the surface of the semiconductor substrate; horizontally recessing the pad oxide film, etching the exposed surface of the semiconductor substrate by isotropic etching; forming a trench to a desired depth, using the oxidation prevention film as a mask; horizontally recessing the pad oxide film; oxidizing the trench formed in the semiconductor substrate; embedding an embedding isolation film in the oxidized trench; removing the embedding isolation film formed on the oxidation prevention film; removing the oxidation prevention film formed on the circuit-forming side of the semiconductor substrate; and removing the pad oxide film formed on the circuit-forming side of the semiconductor substrate, where round upper trench edges with a curvature can be obtained, if necessary, by conducting isotropic etching of exposed surface of the semiconductor substrate and horizontally recessing of the pad oxide film before the oxidation of the trench, whereby only one oxidation step is required.
摘要:
In order to realize a semiconductor device and a manufacturing method thereof which can keep with a high reliability an electric connection between each of bump pads formed on LSI chips and each of electrode pads formed on an interconnection substrate, within an guaranteed temperature range, a thermal expansion coefficient of an adhesive (3) is in the range of 20 to 60 ppm, and an elastic modulus of a build-up portion (6) is in the range of 5 to 10 GPa. Further, the build-up portion (6) is constituted by a multi-layer build-up substrate in which buid-up portion a peak value (a glass transition temperature) of a loss coefficient exists within a range of 100° C. to 250° C. and does not exist within a range of 0° C. to 100° C. By setting or selecting the physical properties in the manner disclosed above, it is possible to realize a semiconductor device and a manufacturing method thereof which can keep with a high reliability an electric bonding between the bump pads (2) formed on the LSI chips (1) and the electrode pads (4) on the interconnection substrate (5) within an guaranteed temperature range.
摘要:
It is an object of the present invention to provide a high-reliability semiconductor device having a storage capacitor and wiring using copper for a main conductive film. Under the above object, the present invention provides a semiconductor device comprising: a semiconductor substrate; a storage capacitor formed on the main surface side of the semiconductor substrate and being a first electrode and a second electrode arranged so as to put a capacitor insulation film; a wiring conductor formed on the main surface side of the semiconductor substrate and including the copper (Cu) element; and a first film formed on the surface of the wiring conductor; wherein a material configuring the first film and a material configuring the first electrode and/or the second electrode include the same element.
摘要:
A semiconductor device and process of forming the device are described. The process includes forming a pad oxide film on the circuit-forming side of a semiconductor substrate; forming an oxidation prevention film on the pad oxide film; removing the oxidation prevention film and the pad oxide film at a desired position, thereby exposing the surface of the semiconductor substrate; horizontally recessing the pad oxide film; etching the exposed surface of the semiconductor substrate by isotropic etching; forming a trench to a desired depth, using the oxidation prevention film as a mask; horizontally recessing the pad oxide film; and oxidizing the trench formed in the semiconductor substrate. The produced device has round upper trench edges obtained by conducting isotropic etching of the exposed surface of the semiconductor substrate and horizontally recessing of the pad oxide film before the oxidation of the trench, whereby only one oxidation step is required.