发明名称 ELECTROSTATIC DISCHARGE PROTECTION OF INTEGRATED CIRCUITS
摘要 Electrical connection pads (3) for integrated semiconductor circuits have a protective diode formed by a doped region (13) located in a well (55) of opposite doping and another protective diode formed by well (59) which surrounds another doped region (15) of the same doping type as a contact are a and is surrounded by another well (57) of oppositive doping. The doped regio ns are connected to the pad and are continuous, narrow strips extending at or along a portion of the peripheriy of the pad. Also the well for which the other doped region serves as a contact has s strip-shape and is located at t he periphery of the pad. The other (15) doped region is also used as a contact for forming an electrical resistor connected to an input/output path of the integrated circuit, the resistor being formed in the well (59) surrounding t he other doped region and another contact of the resistor being formed by a further doped region (45) of the same doping type, also having a strip-shape and located in the same well, thus at the periphery ofthe pad and beneath a marginal portion of the pad. The resistor will thereby not require any extra space.
申请公布号 CA2362428(A1) 申请公布日期 2000.08.17
申请号 CA20002362428 申请日期 2000.02.09
申请人 TELEFONAKTIEBOLAGET LM ERICSSON 发明人 PETTERSSON, OLA
分类号 H01L21/66;H01L21/82;H01L21/822;H01L21/8234;H01L21/8238;H01L23/60;H01L27/04;H01L27/06;H01L27/088;H01L27/092;H01L29/861;(IPC1-7):H01L23/60;H01L27/02 主分类号 H01L21/66
代理机构 代理人
主权项
地址
您可能感兴趣的专利