摘要:
A semiconductor device includes a thermal oxide film for isolation, a semiconductor region that becomes an element forming region with the circumference thereof surrounded by the oxide film and diffused resistance layers in the semiconductor region and provides a structure for controlling resistance value variation of diffused resistors originated in a stress generated at time of forming the oxide film for isolation. A distance between an end portion on a longer side closest to a thermal oxide film of the diffused layer and an end of the thermal oxide film is apart from each other by a predetermined value determined by stress distribution in the semiconductor region or by at least 4 .mu.m or more, the longitudinal direction of the diffused layer portion formed from the end of the thermal oxide film over to a stress distribution (gradient) forming region in the semiconductor region is parallel to the forming direction of the stress gradient, and resistance value distribution is formed parallel to the stress gradient in the diffused layer formed from the end of the thermal oxide film over to the stress distribution forming region in the semiconductor region.
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 width of a circuit device isolation region and a width of a device region formed on a semiconductor substrate are determined in such a manner as to satisfy a condition which prevents the occurrence of dislocation due to thermal oxidation for forming the isolation region. In accordance with the manufacturing scheme, a semiconductor device produced includes a semiconductor substrate, a plurality of circuit regions formed on a device formation region in the semiconductor substrate and having a width of 0.1 to 125 &mgr;m and device isolation regions so formed on the semiconductor substrate as to isolate a plurality of circuit regions from one another and having a width of 0.01 to 2.5 &mgr;m. In such a schemed device, a ratio of the width of the device region to the width of the device isolation region is from 2 to 50. Each device isolation region is a groove formed in the semiconductor substrate by etching a portion, among the pad oxide film formed on the surface of the semiconductor substrate and a nitride film formed on the pad oxide film, existing on the device isolation region, and having a depth of from 0 to 10 nm when measured from the position of the pad oxide film on the semiconductor substrate.
摘要:
A method is provided of fabricating a semiconductor device that includes forming a silicon oxide film on a semiconductor substrate. A silicon nitrite film may be formed on the silicon oxide film. A portion of the silicon nitrite film and the silicon oxide film may be removed at a desired portion. Additionally, a groove may be formed in the semiconductor substrate in the portion in which the silicon oxide film is removed. A part of the silicon oxide film may be etched back around the groove with hydrofluoric acid type at the portion in which the silicon nitrite film is located above. Additionally, an oxidized film may be formed in the groove of the semiconductor substrate and the groove may be oxidized.
摘要:
A semiconductor device capable of operating at a high speed or of having many functions. In this device, delamination of buried electrodes is prevented and thus high reliability is offered. The depth A of contact holes, the minimum linewidth R of a lower metallization layer, and the thickness B of the lower metallization layer satisfy relations given by (0.605/R)0.5
摘要:
A bipolar device having a level difference between the contact area level of a base electrode and a base region in a silicon substrate, and the contact area level of an emitter electrode and an emitter region in the silicon substrate in the range of 0.03 .mu.m to 0.1 .mu.m by removing undesirable impurities from the emitter region and a predetermined horizontal distance between a sidewall and a device isolation film does not generate dislocation and show good electric characteristics.
摘要:
A bipolar device having a level difference between the contact area level of a base electrode and a base region in a silicon substrate, and the contact area level of an emitter electrode and an emitter region in the silicon substrate in the range of 0.03 .mu.m to 0.1 .mu.m by removing undesirable impurities from the emitter region and a predetermined horizontal distance between a sidewall and a device isolation film does not generate dislocation and show good electric characteristics.
摘要:
A dynamic RAM integrated circuit of the one-element memory cell type is provided with a plurality of data lines, a sense amplifier, a plurality of word lines disposed in a manner to intersect with the data lines, and memory cells disposed at the points of intersection between the data lines and the word lines. The RAM includes a P-type semiconductor substrate and an N-type well region formed in the substrate. The memory cells are disposed within the well, and the sense amplifier, which is connected to the date lines, is constructed to a pair of N-channel MOSFETs formed in the semiconductor substrate and a pair of P-channel MOSFETs formed in the well region.
摘要:
A dynamic RAM integrated circuit of the one-element memory cell type is provided with a plurality of data lines, a sense amplifier, a plurality of word lines disposed in a manner to intersect with the data lines, and memory cells disposed at the points of intersection between the data lines and the word lines. The RAM includes a P-type semiconductor substrate and an N-type well region formed in the substrate. The memory cells are disposed within the well, and the sense amplifier, which is connected to the data lines, is constructed of a pair of N-channel MOSFETs formed in the semiconductor substrate and a pair of P-channel MOSFETs formed in the well region.
摘要:
A programmable semiconductor integrated circuitry including a circuit programming element is disclosed. The circuit programming element can be activated in a short-circuit mode by the irradiation of a laser or electron beam or by ion implantation so that it is converted from its original nonconductive state into a conductive or conductable state, thereby providing electrical connection between circuits and/or circuit elements of the integrated circuitry for a desired circuit programming such as circuit creation, circuit conversion or circuit substitution.