摘要:
An n-type first base layer is formed on a semiconductor substrate 1 having a first major surface and a second major surface, and a p-type second base layer is formed thereon. Between the first base layer and the second base layer, a carrier stored layer is formed. The carrier stored layer has a high-concentration impurity layer and a low concentration impurity layer, and the high-concentration impurity layer has a thickness of 1.5 μm or more and an impurity concentration therethrough is made to be 1.0×1016 cm−3 or more throughout the layer.
摘要:
An apparatus for moving a table or a stage having movable parts adapted to be guided by guide rail means slidingly and rectilinearly. At least the movable parts are made of a non-iron light metal material. The sliding surfaces of the movable parts making sliding contact with the guide rail means are made of a self-lubricating material, while the sliding surfaces of the guide rail means making sliding contact with the movable parts are made of a material having a higher hardness and wear resistance than the non-iron light metal material, so that the weight of at least the movable parts is reduced to decrease the weight of the apparatus as a whole.
摘要:
A diphenyl ether represented by the general formula (I), ##STR1## wherein R is a lower alkyl group having 1 to 4 carbon atoms, a lower alkoxyethyl group, the alkoxy substituent of which having 1 to 4 carbon atoms, or a lower alkoxyethoxyethyl group, the alkoxy substituent of which having 1 to 4 carbon atoms is capable of controlling annual and perennial weeds.
摘要:
A finish for synthetic filament yarn which decreases broken filaments and ends down in friction false-twist texturing includes 40 to 98 wt % of a polyether compound, and essentially comprises components (A) and (B); wherein the component (A) is at least one member selected from the group consisting of (A1) a C1-C10 fatty acid, (A2) a C1-C10 hydroxyfatty acid, (A3) a sarcosine derivative, and salts thereof, and the amount of the component (A) in the finish ranges from 0.05 to 5 wt %; and wherein the component (B) is an alkylphosphate salt and the amount of the component (B) in the finish ranges from 0.01 to 3 wt %.
摘要:
A semiconductor device includes an active region with a main semiconductor device section, and a junction-termination region therearound. A first diffusion layer of a second conductivity type is formed in a surface of a first semiconductor layer of a first conductivity type, and extends from the active region into the junction-termination region. A second diffusion layer of the second conductivity type is formed in contact with the first diffusion layer, and extends in the junction-termination region. A first contact electrode is disposed in the active region and in contact with the first diffusion layer, and electrically connected to a first main electrode of the main semiconductor device section. A second contact electrode is disposed in the junction-termination region and in contact with the first diffusion layer, and surrounds the active region. A connection electrode electrically connects the first and second contact electrodes to each other.
摘要:
In an apparatus for precisely moving a table, rectilinear drive systems for both X- and Y-axes are fixed to a support frame, a movable stage is constructed so as to have its motion in the direction of one of these axes constrained by the motion of the rectilinear drive system for the one axis and to have its motion in the direction of the other axis constrained by the rectilinear motion of the rectilinear drive system for the other axis, and means for coupling the rectilinear drive system for at least one of the axes and the movable stage so as to have a backlash.
摘要:
A novel .DELTA..sup.2 -1,2,4-triazolin-5-one derivative having a herbicidal activity, which is represented by the formula ##STR1## wherein, R.sup.1 is a C.sub.1 -C.sub.4 alkyl; R.sup.2 is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group, or a C.sub.2 -C.sub.4 alkenyl group; and X is a hydroxy group, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.6 alkyloxy group, an alkyloxyalkyloxy group of which two alkyls may be same as or different from each other and each alkyl is of C.sub.1 -C.sub.4, a C.sub.2 -C.sub.4 alkenyloxy, or an alkyloxycarbonylalkyloxy group of which two alkyls may be same as or different from each other and each alkyl is of C.sub.1 -C.sub.4.
摘要:
N-(p-trifluoromethoxyphenyl)-3,4,5,6-tetrahydrophthalimide and N-(p-trifluoromethylthiophenyl)-3,4,5,6-tetrahydrophthalimide are capable of controlling annual and perennial weeds with high selectivity.
摘要:
An n-type buffer region 6 is arranged between an n− drift region 1 and a p-type collector region 7, and has a higher impurity concentration than n− drift region 1 Assuming that α represents the ratio (WTA/WTB) between WTA expressed as: WTA = 2 ɛ s ɛ 0 V qNd and the thickness WTB of the drift region held between the base region and the buffer region, the ratio (DC/DB) of the net dose DC of the collector region with respect to the net dose DB of the buffer region is at least α. Thus, a semiconductor device capable of ensuring a proper margin of SCSOA resistance can be obtained.
摘要:
There is disclosed a pattern forming apparatus for projecting a pattern which is formed on a reticle upon a photoresist layer on a substrate which comprises an illumination system for illuminating the pattern for forming an optical image, a reduction lenses for reducing the optical pattern image at a certain reduction ratio and projecting the reduced optical pattern image upon the photoresist layer formed on the substrate for exposing the photoresist layer, and liquid sustaining means for filling a gap between at least a portion of the reduction lenses and the photoresist layer with an optically transparent liquid having a refractive index of more than 1 (one).