Nkag siab txog lub zog MOSFET Structure
Fais fab MOSFETs yog cov khoom tseem ceeb hauv cov khoom siv hluav taws xob niaj hnub, tsim los tswj cov hluav taws xob siab thiab cov khoom siv tam sim no. Cia peb tshawb nrhiav lawv cov yam ntxwv tshwj xeeb uas ua kom muaj peev xwm tuav tau lub zog.
Basic Structure Overview
Source Metal Join ╔═══╩═══╗ Join n+ Join n+ ╝ ╚════ p+p Body │ │ n- Drift Region │ │ ═══════════ ═════ n+ Substrate Join ╨ Drain Metal
Vertical Structure
Tsis zoo li MOSFETs li niaj zaus, lub zog MOSFETs siv cov qauv ntsug uas tam sim no ntws los ntawm sab saum toj (qhov chaw) mus rau hauv qab (drain), ua kom muaj peev xwm tuav tau tam sim no.
Drift Region
Muaj ib qho me me doped n- cheeb tsam uas txhawb nqa siab thaiv qhov hluav taws xob thiab tswj cov hluav taws xob xa hluav taws xob.
Cov Txheej Txheem Tseem Ceeb
- Qhov Chaw Hlau:Sab saum toj hlau txheej rau tam sim no sau thiab faib
- n + Qhov chaw qhov chaw:Heavy doped cheeb tsam rau kev txhaj tshuaj
- p-Lub cev cheeb tsam:Tsim cov channel rau tam sim no ntws
- n- Drift Region:Txhawb voltage thaiv kev muaj peev xwm
- n + substrate:Muab txoj kev tsis tshua muaj zog rau ntws
- Hlau Hlau:Hauv qab hlau tiv tauj rau tam sim no ntws