摘要:
A semiconductor device (1910) comprises a semiconductor substrate (100) including an isolation region (101) and an active region (102); a gate electrode (104) formed on gate oxide film (103) over the active area (102) and including side walls covered at least in part by insulating film (105) of the gate electrode side wall; and a source region (106) and a drain region (106) provided across the gate electrode (104) with the insulating film (105) of the gate electrode side wall in between. At least any of the source region (106) and the drain region (106) includes a second face for engagement with contact wiring. The second face makes some angle with the first face (AA') and an angle of less than 80 degrees with the surface of the isolation region.
摘要:
Verfahren zur Herstellung eines Halbleitergegenstandes, indem
eine Silizidschicht (2) aufgebracht wird, in die Silizidschicht (2) ein Fremdstoff eingebracht wird, der in einem Halbleitergebiet (3) als Dotand wirkt, die Silizidschicht (2) zumindest teilweise unterhalb des, an die Silizidschicht angrenzenden, monokristallinen Halbleitergebietes (3) angeordnet wird, so dass die Silizidschicht (2) unter einer Schicht aus dem monokristallinen Halbleitergebiet (3) zumindest teilweise vergraben wird, und mittels eines späteren Hochtemperaturschrittes der als Dotand wirkende Fremdstoff zumindest teilweise in das angrenzende monokristalline Halbleitergebiet (3) aus der zumindest teilweise vergrabenen Silizidschicht (2) eindiffundiert wird.
摘要:
A method of forming a thin, high-quality relaxed SiGe-on-insulator substrate (10) material is provided which first includes forming a SiGe or pure Ge layer on a surface of a first single crystal Si layer (14) which is present atop a barrier layer (12) that is resistant to the diffusion of Ge. Optionally forming a Si cap layer (18) over the SiGe or pure Ge layer (16), and thereafter heating the various layers at a temperature which permits interdiffusion of Ge throughtout the first single crystal Si layer (14), the optional Si cap (18) and the SiGe or pure Ge layer (16) thereby forming a substantially relaxed, single crystal SiGe layer atop the barrier layer (12). Additional SiGe regrowth and/or formation of a strained epi-Si layer may follow the above steps. SiGe-on-insulator substrate materials as well as structures including at least the SiGe-on-insulator substrate material are also disclosed herein.
摘要:
A Trench gate MOS field-effect transistor having a narrow, lightly doped, region extending from a channel accommodating region (3) of same conductivity type immediately adjacent the trench sidewall. The narrow region may be self-aligned to the top of a lower polysilicon shield region in the trench or may extend the complete depth of the trench. The narrow region advantageously relaxes the manufacturing tolerances, which otherwise require close alignment of the upper polysilicon trench gate to the body-drain junction.
摘要:
In an annealed wafer manufacturing method, a boat whereupon semiconductor wafers are placed is inserted into a furnace core pipe, while introducing an inert gas into the furnace, and after all the semiconductor wafers to be products reach a soaking part, the inserting speed of the boat whereupon the semiconductor wafers are placed is reduced and/or temporarily stopped to maintain a space between the furnace core pipe and a shutter for a prescribed time, then, the furnace core pipe is closed by the shutter. Thus, change of specific resistivity of the wafer before and after heat treatment due to wafer contamination by conductive impurities during heat treatment is more surely prevented.
摘要:
A semiconductor device 1910 comprises a semiconductor substrate 100 including an isolation region 101 and an active region 102, a gate electrode 104 provided on the active region 102 via a gate insulating film 103 , part of a side of the gate electrode 104 being covered with a gate electrode side wall insulating film 105 , and a source region 106 and a drain region 106 provided on opposite sides of the gate electrode 104 via the gate electrode side wall insulating film 105 . At least one of the source region 106 and the drain region 106 has a second surface for contacting a contact conductor. The second surface is tilted with respect to a first surface A-A' . An angle between the second surface and a surface of the isolation region is 80 degrees or less.
摘要:
A semiconductor device (1910) comprises a semiconductor substrate (100) including an isolation region (101) and an active region (102); a gate electrode (104) formed on gate oxide film (103) over the active area (102) and including side walls covered at least in part by insulating film (105) of the gate electrode side wall; and a source region (106) and a drain region (106) provided across the gate electrode (104) with the insulating film (105) of the gate electrode side wall in between. At least any of the source region (106) and the drain region (106) includes a second face for engagement with contact wiring. The second face makes some angle with the first face (AA') and an angle of less than 80 degrees with the surface of the isolation region.
摘要:
A Trench gate MOS field-effect transistor having a narrow, lightly doped, region extending from a channel accommodating region (3) of same conductivity type immediately adjacent the trench sidewall. The narrow region may be self-aligned to the top of a lower polysilicon shield region in the trench or may extend the complete depth of the trench. The narrow region advantageously relaxes the manufacturing tolerances, which otherwise require close alignment of the upper polysilicon trench gate to the body-drain junction.
摘要:
The present invention is directed to a Zener diode and a method for fabricating the same. According to the present invention, a voltage regulator device can be fabricated by carrying out a diffusion process without using a diffusion mask. Further, a PNP (or NPN) Zener diode having a bi-directional threshold voltage characteristic or a PN Zener diode can be fabricated without any photolithographic process or using the minimum number of processes. Therefore, the number of processing steps can be reduced and the yield thereof can be increased.
摘要:
Properties of a semiconductor device are improved. A semiconductor device having a superjunction structure, in which p-type column regions and n-type column regions are periodically arranged, is configured as follows. Each n-type column region has a vertical section including an n-type epitaxial layer located between trenches and a tapered embedded n-type epitaxial film disposed on a side face of the trench. Each p-type column region includes an embedded p-type epitaxial film disposed within the trench. The tapered embedded n-type epitaxial film is thus provided on the sidewall of the trench in which the p-type column region is to be disposed, thereby the p-type column region is allowed to have an inverted trapezoidal shape, leading to an increase in margin for a variation in concentration of a p-type impurity in the p-type column region. On resistance can be reduced by lateral diffusion of an n-type impurity (for example, As).