1762-IT4 一些晶圓代工廠仍在基于下一代全能柵極晶體管開(kāi)發(fā)新工藝,包括更先進(jìn)的高遷移率版本,但是將這些技術(shù)投入生產(chǎn)將是困難且昂貴的。
Intel、三星、臺(tái)積電和其他公司正在為從今天的FinFET晶體管向3nm和2nm節(jié)點(diǎn)的新型全柵場(chǎng)效應(yīng)晶體管(GAAFET)過(guò)渡奠定基礎(chǔ),這種過(guò)渡將從明年或2023年開(kāi)始。
GAAFET將被用于3nm以下,擁有更好的性能,更低的功耗和更低的漏電壓。雖然GAAFET晶體管被認(rèn)為是FinFET的演進(jìn),并且已經(jīng)進(jìn)行了多年研發(fā),但任何新型晶體管或材料對(duì)于芯片行業(yè)來(lái)說(shuō)都是巨大的工程。芯片制造商一直在盡可能長(zhǎng)地推遲這一行動(dòng),但是為了繼續(xù)微縮晶體管,需要GAAFET。
需要指出的是,雖然同為納米片F(xiàn)ET,但GAA架構(gòu)有幾種類(lèi)型。基本上,納米片F(xiàn)ET的側(cè)面是FinFET,柵極包裹著它,能夠以較低的功率實(shí)現(xiàn)更高的性能。
圖1:平面晶體管與FinFET以及GAAFET
“GAA技術(shù)對(duì)于晶體管的持續(xù)微縮至關(guān)重要。3nmGAA的關(guān)鍵特性是閾值電壓可以為0.3V。與3nmFinFET相比,這能夠以更低的待機(jī)功耗實(shí)現(xiàn)更好的開(kāi)關(guān)效果,”IBS執(zhí)行官HandelJones說(shuō)。“3nmGAA的產(chǎn)品設(shè)計(jì)成本與3nmFinFET不會(huì)有顯著差異。但GAA的IP認(rèn)證將是3nmFinFET成本的1.5倍。”
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