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    • 2. 发明公开
    • PHASE CONTROL THYRISTOR
    • 相控THYRISTOR
    • EP3175485A1
    • 2017-06-07
    • EP15744243.5
    • 2015-07-31
    • ABB Schweiz AG
    • BELLINI, MarcoVOBECKY, Jan
    • H01L29/74H01L29/08
    • H01L29/7428H01L29/0839H01L29/66363H01L29/74
    • A thyristor, in particular a phase control thyristor, is disclosed with comprises: a) a semiconductor slab, in particular a semiconductor wave or die, in which a thyristor structure is formed, b) a cathode metallization formed on a cathode region on a cathode side surface of the semiconductor slab, c) a gate metallization formed on a gate region on the cathode side surface of the semiconductor slab, d) a plurality of N discrete emitter shorts, arranged at points Pi in the cathode region, said points having point locations xi, with iε{1; . . . ; N}, e) the points Pl defining a Delaunay triangulation comprising a plurality of triangles Tj with jε{1; . . . ; M), wherein f) for a first subset of triangles Tl with lεS1⊂{1; . . . ; M), g) with each triangle Tl being characterized by a geometric quantity having values qT,l with lεS1⊂{1; . . . ; M), said geometric quantity having a mean value μ, and i) a coefficient of variation of the values qT,l with lεS1 is smaller than 0.1, preferably smaller than 0.05, and/or ii) an absolute value of a skewedness of the geometric quantities qT,l with lεS1 is smaller than 5, preferably smaller than 1, and/or iii) a Kurtosis of the geometric quantities qT,l with lεS1 is smaller than 20, preferably smaller than 10, and h) for a second subset of triangles Tm with mεS2⊂S1, for which the respective geometric quantities qT,m with mεS2 deviate from the mean value by more than a predetermined amount, in particular by more than 30%, (1) a quotient of a standard deviation of the quantities qT,m with mεS2 and a mean squared value of the geometric quantity qT,l with lεS1 is less than 1 or less than 0.1, and/or a quotient of a number of triangles in the second subset and a number of triangles in the first subset is less than
    • 公开了晶闸管,特别是相控晶闸管,其包括:a)半导体板,特别是半导体晶片或晶片,其中形成晶闸管结构,b)在阴极上的阴极区上形成的阴极金属化层 c)在半导体板的阴极侧表面上的栅极区域上形成的栅极金属化层,d)在阴极区域中布置在点P处的多个N个分立发射极短路,所述 具有点位置xi的点,即{1; ...; e)定义Delaunay三角剖分的点P,所述Delaunay三角剖分包括多个具有ye {1; ...; M),其中f)对于第一个三角形子集T / with / eSi_≡{1; ...; M),g),其中每个三角形T /由具有数值qjj的几何量表征,其中/ e Si_≡{1; ...; M),所述几何量具有平均值μ,并且i)具有/ e Si的值qjj的变化系数小于0.1,优选地小于0.05,和/或ii)所述几何量的偏斜的绝对值 几何量qT,/与/ e Si小于5,优选小于1,和/或iii)几何量qr的峰度与/ e Si小于20,优选小于10,和/或 iv)对于第二子集的三角形Tm,其中S2≤Si,其中与S2的相对几何量qr,m与平均值相差超过预定量,特别是大于30%, (1)数量qj,m与我的S2的标准偏差和几何量qi的均方值,与/ e Si的商小于1,优选小于0.1,和/或(2) 第二子集中的多个三角形的商和第一子集中的多个三角形的商小于1.0×10 -2,优选小于0.5× 10" 3。 还公开了一种制造这种晶闸管的方法。