摘要:
A semiconductor memory device having as its main storage portion a capacitor storing charges as binary information and an access transistor controlling input/output of the charges to/from the capacitor, and eliminating the need for refresh, is obtained. The semiconductor memory device includes a capacitor with a storage node located above a semiconductor substrate and holding the charges corresponding to a logical level of stored binary information, an access transistor located on the semiconductor substrate surface and controlling input/output of the charges accumulated in the capacitor, and a latch circuit located on the semiconductor substrate and maintaining a potential of the capacitor storage node. At least one of circuit elements constituting the latch circuit is located above the access transistor.
摘要:
As an opening exposing a surface of an element-forming region positioned in a region lying between two gate electrodes, a first opening is formed based on a resist pattern formed such that a portion of a region where the opening is formed overlaps two-dimensionally with a portion of one gate electrode. As an opening exposing a surface of one gate electrode, a second opening is formed based on a resist pattern formed such that a region where the opening is formed overlaps two-dimensionally solely with one gate electrode. Here, the first opening is covered with a non-photosensitive, organic film and the resist pattern. Thereafter, a tungsten interconnection is formed in the first and second openings. Thus, a semiconductor device, of which production cost is reduced, and in which electrical short-circuit and falling off of an interconnection are suppressed, can be obtained.
摘要:
An SRAM comprises a memory cell including first and second access nMOS transistors, first and second driver nMOS transistors and first and second load pMOS transistors, polysilicon wires forming gates of the first and second access nMOS transistors and polysilicon wires extending in the same direction as the polysilicon wires for forming gates of the first and second driver nMOS transistors and gates of the first and second load pMOS transistors. The gate widths of the first and second access nMOS transistors and those of the first and second driver nMOS transistors are equalized with each other.
摘要:
A manufacturing method of a semiconductor device to perform processing, including pre-processing and post-processing, on a semiconductor substrate, a characteristic of the processed semiconductor substrate is inspected, whether the semiconductor substrate complies with a predetermined standard is judged, and a semiconductor substrate not complying with the standard is re-processed so that the semiconductor substrate complies with the standard.
摘要:
An impact-driven rotating device includes an output shaft, a hammer for rotating the output shaft by imparting an impact to the output shaft, a rotation driver for rotating the hammer, an impact detector for detecting the impact imparted by the hammer, a rotation angle detector for detecting a rotation angle of the output shaft, a rotation speed detector for detecting a rotation speed of the output shaft from the rotation angle detected by the rotation angle detector, an energy calculator for calculating energy imparted to the output shaft from the rotation speed detected by the rotation speed detector, a between-impacts rotation angle calculator for calculating a rotation angle of the output shaft rotated from when the impact detector detected the impact to when the impact detector detects an subsequent impact from the rotation angle detected by the rotation angle detector, a tightening torque calculator for calculating a tightening torque by dividing the energy calculated by the energy calculator by the rotation angle calculated by the between-impacts rotation angle calculator, and a controller for stopping the rotation driver when the tightening torque calculated by the tightening torque calculator becomes equal to or exceeds a predetermined torque.