发明授权
US08963200B2 Methods and apparatus for increased holding voltage in silicon controlled rectifiers for ESD protection 有权
用于ESD保护的可控硅整流器中增加保持电压的方法和装置

Methods and apparatus for increased holding voltage in silicon controlled rectifiers for ESD protection
摘要:
Methods and apparatus for increased holding voltage SCRs. A semiconductor device includes a semiconductor substrate of a first conductivity type; a first well of the first conductivity type; a second well of a second conductivity type adjacent to the first well, an intersection of the first well and the second well forming a p-n junction; a first diffused region of the first conductivity type formed at the first well and coupled to a ground terminal; a first diffused region of the second conductivity type formed at the first well; a second diffused region of the first conductivity type formed at the second well and coupled to a pad terminal; a second diffused region of the second conductivity type formed in the second well; and a Schottky junction formed adjacent to the first diffused region of the second conductivity type coupled to a ground terminal. Methods for forming devices are disclosed.
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