公开(公告)号：US20140141605A1

公开(公告)日：2014-05-22

申请号：US13682769

申请日：2012-11-21

Applicant: GLOBALFOUNDRIES INC.

Inventor： Chang Seo PARK ,  Linus JANG ,  Jin CHO

IPC: H01L29/66

CPC classification number: H01L29/66742 ,  H01L29/66795

Abstract: Approaches for forming a FinFET device using double patterning memorization techniques are provided. Specifically, a device will initially be formed by defining a set of fins, depositing a poly-silicon layer, and depositing a hardmask. Thereafter, a front end of the line (FEOL) lithography-etch, lithography-etch (LELE) process will be performed to form a set of trenches in the device. The set of trenches will be filled with an oxide layer that is subsequently polished. Thereafter, the device is selectively etched to yield a (e.g., poly-silicon) gate pattern.

Abstract translation: 提供了使用双重图案记忆技术形成FinFET器件的方法。 具体来说，首先将通过限定一组翅片，沉积多晶硅层和沉积硬掩模来形成器件。 此后，将执行线的前端（FEOL）光刻蚀刻，光刻蚀刻（LELE）处理以在器件中形成一组沟槽。 该组沟槽将填充随后抛光的氧化物层。 此后，选择性地蚀刻器件以产生（例如，多晶硅）栅极图案。