公开(公告)号：US20150270216A1

公开(公告)日：2015-09-24

申请号：US14731363

申请日：2015-06-04

Applicant: Intel Corporation

Inventor： Mark T. Bohr ,  Tahir Ghani ,  Nadia M. Rahhai-Orabi ,  Subhash M. Joshi ,  Joseph M. Steigerwald ,  Jason W. Klaus ,  Jack Hwang ,  Ryan Mackiewicz

IPC: H01L23/522 ,  H01L29/423 ,  H01L29/08 ,  H01L29/51 ,  H01L23/528 ,  H01L21/28 ,  H01L21/283 ,  H01L21/311 ,  H01L21/768 ,  H01L29/78 ,  H01L29/66

CPC classification number: H01L21/76897 ,  H01L21/28123 ,  H01L21/28229 ,  H01L21/28255 ,  H01L21/283 ,  H01L21/28562 ,  H01L21/31105 ,  H01L21/76802 ,  H01L21/76831 ,  H01L21/76849 ,  H01L21/76877 ,  H01L23/5226 ,  H01L23/528 ,  H01L23/535 ,  H01L29/0847 ,  H01L29/16 ,  H01L29/42364 ,  H01L29/456 ,  H01L29/495 ,  H01L29/4966 ,  H01L29/512 ,  H01L29/517 ,  H01L29/518 ,  H01L29/66477 ,  H01L29/665 ,  H01L29/66545 ,  H01L29/6656 ,  H01L29/78 ,  H01L29/785 ,  H01L2029/7858 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A transistor comprises a substrate, a pair of spacers on the substrate, a gate dielectric layer on the substrate and between the pair of spacers, a gate electrode layer on the gate dielectric layer and between the pair of spacers, an insulating cap layer on the gate electrode layer and between the pair of spacers, and a pair of diffusion regions adjacent to the pair of spacers. The insulating cap layer forms an etch stop structure that is self aligned to the gate and prevents the contact etch from exposing the gate electrode, thereby preventing a short between the gate and contact. The insulator-cap layer enables self-aligned contacts, allowing initial patterning of wider contacts that are more robust to patterning limitations.

Abstract translation: 晶体管包括衬底，衬底上的一对间隔物，衬底上的栅介质层和一对间隔物之间​​，栅极电介质层上的栅电极层和一对衬垫之间的绝缘帽层 栅极电极层和一对间隔物之间​​，以及与该对间隔物相邻的一对扩散区域。 绝缘盖层形成了与栅极自对准的防蚀结构，并防止接触蚀刻暴露栅电极，从而防止栅极和接触之间的短路。 绝缘体盖层能够进行自对准触点，允许对图案化限制更坚固的较宽触点的初始图案化。