| 摘要 |
An LDMOS device and method for making the same are disclosed. The LDMOS device comprises a first well, a second well, a third well, a first ion implantation region, and a second ion implantation region. The first well is in a semiconductor substrate. The second well is in the first well. The third well is first well adjacent to the second well. The first ion implantation region is in the second well. The second ion implantation region is in the third well. A device isolation layer structure between a P-type well region and a P-type body of the LDMOS device may be eliminated, thereby preventing a reduction in the doping concentration of the P-type well, thus minimizing leakage current and maintaining a high breakdown voltage.
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