发明名称 |
MOS TRANSISTOR WITH HIGH OUTPUT VOLTAGE ENDURANCE |
摘要 |
<p>PCT No. PCT/EP96/04246 Sec. 371 Date Apr. 1, 1998 Sec. 102(e) Date Apr. 1, 1998 PCT Filed Sep. 28, 1996 PCT Pub. No. WO97/13277 PCT Pub. Date Apr. 10, 1997An MOS transistor with high output voltage endurance comprises a semiconductor substrate with the surface thereof including a doping area having a surface doping concentration decreasing from the drain connection area to the drain-side edge of the gate oxide layer. This doping area is formed by ion implantation and subsequent outdiffusion of individual partial areas. The first partial area has a size in the drain-gate extension which is considerably larger than the penetration depth of the outdiffusion in the substrate. The second partial area has a size and a distance to the first partial area which are both smaller than the penetration depth of the outdiffusion in the substrate. In the outdiffused condition, the individual diffusions originating from the individual, respectively adjacent first and second partial areas merge into each other on the surface of the substrate to thus obtain a doping concentration gradient for a constant conduction type of the doping area.</p> |
申请公布号 |
EP0853819(A1) |
申请公布日期 |
1998.07.22 |
申请号 |
EP19960934486 |
申请日期 |
1996.09.28 |
申请人 |
EL MOS ELEKTRONIK IN MOS-TECHNOLOGIE GMBH |
发明人 |
ROTH, WALTER;GIEBEL, THOMAS |
分类号 |
H01L21/336;H01L29/10;H01L29/78;(IPC1-7):H01L29/78 |
主分类号 |
H01L21/336 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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