发明授权
US06818494B1 LDMOS and CMOS integrated circuit and method of making 失效
LDMOS和CMOS集成电路及其制作方法

LDMOS and CMOS integrated circuit and method of making
摘要:
An integrated circuit (IC) is formed on a substrate. The IC has a first well having a first dopant concentration that includes a second conductivity low-voltage transistor. The IC also has a second well having a dopant concentration equal to the first dopant concentration that includes a first conductivity high-voltage transistor. In addition, the IC has a third well having a second dopant concentration of an opposite type than the first well that includes a first conductivity low-voltage transistor. The first conductivity low-voltage transistor and the second conductivity low-voltage transistor are created without a threshold voltage (Vt) implant.
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