摘要:
A method for manufacturing a semiconductor device, the method including: forming a bit line in a semiconductor substrate; forming a plurality of word lines which intersect with the bit line at predetermined intervals on the semiconductor substrate; eliminating a portion of the plurality of word lines; forming an interlayer insulating film on the semiconductor substrate; and forming a metal plug which penetrates through the interlayer insulating film and is coupled to the bit line in a region where the portion of the plurality of word lines was eliminated.
摘要:
The present invention relates to a semiconductor device that includes a semiconductor substrate (10) having source/drain diffusion regions (14) formed therein and control gates (20) formed thereon, with grooves (18) being formed on the surface of the semiconductor substrate (10) and being located below the control gates (20) and between the source/drain diffusion regions (14). The grooves (18) are separated from the source/drain diffusion regions (14), thereby increasing the effective channel length to maintain a constant channel length for charge accumulation while enabling the manufacture of smaller memory cells. The present invention also provides a method of manufacturing the semiconductor device.
摘要:
The present invention relates to a semiconductor device that includes a semiconductor substrate (10) having source/drain diffusion regions (14) formed therein and control gates (20) formed thereon, with grooves (18) being formed on the surface of the semiconductor substrate (10) and being located below the control gates (20) and between the source/drain diffusion regions (14). The grooves (18) are separated from the source/drain diffusion regions (14), thereby increasing the effective channel length to maintain a constant channel length for charge accumulation while enabling the manufacture of smaller memory cells. The present invention also provides a method of manufacturing the semiconductor device.
摘要:
A semiconductor memory device employs a SONOS type memory architecture and includes a bit line diffusion layer in a shallow trench groove in which a conductive film is buried. This makes it possible to decrease the resistivity of the bit line diffusion layer without enlarging the area on the main surface of the semiconductor substrate, and to fabricate the semiconductor memory device having stable electric characteristics without enlarging the cell area. The bit line is formed by implanting ions into the sidewall of Si3N4.
摘要翻译:半导体存储器件采用SONOS型存储器架构,并且在其中埋入导电膜的浅沟槽沟槽中包括位线扩散层。 这使得可以在不扩大半导体衬底的主表面上的面积的情况下降低位线扩散层的电阻率,并且制造具有稳定的电特性的半导体存储器件而不扩大单元面积。 位线通过将离子注入到Si 3 N 4的侧壁中而形成。
摘要:
After an ONO film in which a silicon nitride film (22) formed by a plasma nitriding method using a plasma processor having a radial line slot antenna is sandwiched by silicon oxide films (21), (23), a bit line diffusion layer (17) is formed in a memory cell array region (11) by an ion implantation as a resist pattern (16) taken as a mask, then lattice defects are given to the silicon nitride film (22) by a further ion implantation. Accordingly, a highly reliable semiconductor memory device can be realized, in which a high quality nitride film is formed in a low temperature condition, in addition, the nitride film can be used as a charge trap film having a charge capture function sufficiently adaptable for a miniaturization and a high integration which are recent demands.
摘要:
A trench (4) is formed in a semiconductor substrate (1), and then a plasma oxynitride film (5) is formed on a side wall surface and a bottom surface of the trench (4) at a temperature of approximately 300° C. to 650° C. At such a temperature, no outward diffusion of impurities from the semiconductor substrate (1) occurs. Therefore, any problems such as formation of a parasitic transistor hardly occur even when ions of impurities are not implanted thereafter. After the plasma oxynitride film (5) is formed, it is thermally oxidized, and a portion where the outermost surface of the semiconductor substrate (1) meets the wall surface of the trench (4) is turned into a curved surface. As a result, the outermost surface of the semiconductor substrate (1) and the wall surface of the trench (4) meet each other while forming a curved surface, and hence a parasitic transistor is hardly formed at this portion. Consequently, formation of a hump is prevented, thereby achieving favorable characteristics.
摘要:
A glass ceramic sintered product obtained by sintering a mixture powder containing a BaO-containing glass, metal oxide particles having a coefficient of linear thermal expansion at 40 to 400° C. of not smaller than 6 ppm/°C., and a Zr compound and, particularly, containing the Zr compound in an amount of from 0.1 to 30% by weight calculated as Zr02, and exhibiting a coefficient of linear thermal expansion at 40 to 400° C. of from 8.5 to 18 ppm/°C. The glass ceramic sintered product exhibits excellent resistance against chemicals and does not discolor even when subjected to treatment with an acidic or alkaline solution in the step of plating. A wiring board using the glass ceramic sintered product as an insulating substrate exhibits a coefficient of linear thermal expansion substantially similar to that of an external circuit board, effectively suppressing the occurrence of thermal stress and cracking.
摘要:
A heat-resistant alloy capable of effectively suppressing diffusion of Cr, as well as an alloy member for a fuel cell, a fuel cell stack device, a fuel cell module and a fuel cell device are provided. A heat-resistant alloy includes a Cr-containing alloy, and a Cr-diffusion suppression layer located on at least a part of a surface of the Cr-containing alloy, the Cr-diffusion suppression layer being made by laminating a first layer that contains a Zn-containing oxide and a second layer that does not contain ZnO but contains an (La, Sr)MnO3-based perovskite oxide in that order, so that it is possible to effectively suppress diffusion of Cr. By using the heat-resistant alloy for an alloy member for a fuel cell, a fuel cell stack device, a fuel cell module and a fuel cell device each having improved reliability can be obtained.
摘要:
A heat-resistant alloy capable of effectively suppressing diffusion of Cr, as well as an alloy member for a fuel cell, a fuel cell stack device, a fuel cell module and a fuel cell device are provided. A heat-resistant alloy includes a Cr-containing alloy, and a Cr-diffusion suppression layer located on at least a part of a surface of the Cr-containing alloy, the Cr-diffusion suppression layer being made by laminating a first layer that contains a Zn-containing oxide and a second layer that does not contain ZnO but contains an (La, Sr)MnO3-based perovskite oxide in that order, so that it is possible to effectively suppress diffusion of Cr. By using the heat-resistant alloy for an alloy member for a fuel cell, a fuel cell stack device, a fuel cell module and a fuel cell device each having improved reliability can be obtained.
摘要:
The present invention provides a semiconductor device and a method for manufacturing thereof. The semiconductor device includes bit lines disposed in a semiconductor substrate, a first ONO disposed between the bit lines on the semiconductor substrate, and a second ONO film disposed on each of the bit lines. The film thickness of a first silicon nitride film in the first ONO film is larger than the film thickness of a second silicon nitride film in the second ONO film.