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求出了平面工艺所得圆柱边界的突变结的电位分布的解析解.它由若干项拉普拉斯方程的解和一项泊松方程的解组成.此解不象通常的圆柱对称解:在圆柱与平面的交界部分不存在不匹配.计算了击穿电压,其值略高于过去常用平面结击穿电压值,且用一个简单表示式表示.
The analytical solution of the potential distribution of the sudden junctions at the cylindrical boundary obtained by the planar process is obtained, which consists of the solution of several Laplace equations and a solution of the Poisson equation, which is not as usual as the cylindrical symmetry solution: There is no mismatch between the junction of the cylinder and the plane, and the breakdown voltage is calculated, which is slightly higher than the usual breakdown voltage of the plane junction in the past and is represented by a simple expression.