摘要:
A semiconductor device of the invention has a plurality of resistor elements formed on an element isolating oxide film in predetermined regions on a surface of a semiconductor substrate. Active regions are furnished close to the resistor elements. This allows the element isolating oxide film near the resistor elements to be divided into suitable strips, forestalling a concave formation at the center of the element isolating oxide film upon polishing of the film by CMP and thereby enhancing dimensional accuracy of the resistor elements upon fabrication.
摘要:
A semiconductor device of the invention has a plurality of resistor elements formed on an element isolating oxide film in predetermined regions on a surface of a semiconductor substrate. Active regions are furnished close to the resistor elements. This allows the element isolating oxide film near the resistor elements to be divided into suitable strips, forestalling a concave formation at the center of the element isolating oxide film upon polishing of the film by CMP and thereby enhancing dimensional accuracy of the resistor elements upon fabrication.
摘要:
External resistance Rsd1 is obtained using a first evaluation pattern of MOSFETs having a gate contact length Lgc1 and a channel width W1 each (in steps 100 and 102). External resistance Rsd2 is then acquired by use of a second evaluation pattern of MOSFETs having a gate contact length Lgc2 and a channel width W2 each (in steps 100 and 104). Thereafter, sheet resistance Rsh and overlapping portion resistance Rdsw of the MOSFETs are computed (in step 106) in accordance with the following expressions: Rsh=(W2·Rsd2−W1·Rsd1)/(Lgc2−Lgc1) Rdsw=(W1·Lgc2·Rsd1−W2·Lgc1·Rsd2)/(Lgc2−Lgc1).
摘要:
A transistor having a longer channel length and serving as a reference, and a transistor having a shorter channel length and to be subjected to effective channel length extraction are prepared (step ST1.1). A hypothetical point at which a change in a total drain-to-source resistance is estimated to be approximately zero when a gate overdrive is slightly changed is extracted in a mask channel length versus total drain-to-source resistance plane. The values of a function (F) are calculated which are defined by the difference between the rate of change in the total drain-to-source resistance and the product of a channel resistance per unit length and the rate of change in a mask channel length at the hypothetical points (step ST1.6). A true threshold voltage of the transistor having the shorter channel length is determined by a shift amount (&dgr;) which minimizes the standard deviation of the function (F) determined in the step ST1.7 (step ST1.10). A resistance-based method thus extracts an effective channel length and a series resistance with increased accuracy.
摘要:
A first polysilicon film which contains phosphorus as an impurity is formed on a semiconductor substrate. A second polysilicon film which is higher in phosphorus concentration than the first polysilicon film is formed on the first polysilicon film. The second polysilicon film is anisotropically etched to expose a surface of the first polysilicon film. Thermal oxidation is then performed. A surface of the first polysilicon film and a surface of the second polysilicon film are oxidized according to their respective oxidization rates depending on their respective phosphorus concentrations. Thus, a semiconductor device in which the size of the gate electrode can be readily controlled and damage to the semiconductor substrate or the like can be suppressed, is obtained.
摘要:
An interconnection structure of a semiconductor device with a gate electrode, an active region provided in the vicinity of the gate electrode and a first buried layer in a contact hole exposing the gate electrode and the active region. The contact hole is easily formed, and the first buried layer has a substantially low interconnection resistance value.
摘要:
A semiconductor device including an interconnection structure having superior electrical characteristics and allowing higher speed of operation and lower power consumption even when miniaturized, manufacturing method thereof and a method of designing a semiconductor circuit used in the manufacturing method are provided. In the semiconductor device, a conductive region is formed on a main surface of a semiconductor substrate. A first interconnection layer is electrically connected to the conductive region, has a relatively short line length, and contains a material having relatively high electrical resistance. A first insulator is formed to surround the first interconnection layer and has a relatively low dielectric constant. A second interconnection layer is formed on the main surface of the semiconductor substrate, contains a material having low electrical resistance than the material contained in the first interconnection layer, and has longer line length than the first interconnection layer. A second insulator is formed to surround the second interconnection layer and has a dielectric constant higher than the first insulator.
摘要:
A module cell generating device of a semiconductor integrated circuit includes a parameter input part for applying a designation parameter, a basic cell group storing the basic cells, and a basic cell arranging and wiring process part for generating layout designing data by utilizing a structure description part which is a control description for defining the arrangement method and the wiring method of the basic cells, the designation parameter, the structure description, and the basic cells. Furthermore, it includes a basic cell generating process part for generating the newly designated basic cells in accordance with the designation parameter.
摘要:
A semiconductor device of the invention has a plurality of resistor elements formed on an element isolating oxide film in predetermined regions on a surface of a semiconductor substrate. Active regions are furnished close to the resistor elements. This allows the element isolating oxide film near the resistor elements to be divided into suitable strips, forestalling a concave formation at the center of the element isolating oxide film upon polishing of the film by CMP and thereby enhancing dimensional accuracy of the resistor elements upon fabrication.
摘要:
A semiconductor device including an interconnection structure having superior electrical characteristics and allowing higher speed of operation and lower power consumption even when miniaturized, manufacturing method thereof and a method of designing a semiconductor circuit used in the manufacturing method are provided. In the semiconductor device, a conductive region is formed on a main surface of a semiconductor substrate. A first interconnection layer is electrically connected to the conductive region, has a relatively short line length, and contains a material having relatively high electrical resistance. A first insulator is formed to surround the first interconnection layer and has a relatively low dielectric constant. A second interconnection layer is formed on the main surface of the semiconductor substrate, contains a material having low electrical resistance than the material contained in the first interconnection layer, and has longer line length than the first interconnection layer. A second insulator is formed to surround the second interconnection layer and has a dielectric constant higher than the first insulator.