Invention Application
US20150287795A1 PROCESSES FOR PREPARING INTEGRATED CIRCUITS WITH IMPROVED SOURCE/DRAIN CONTACT STRUCTURES AND INTEGRATED CIRCUITS PREPARED ACCORDING TO SUCH PROCESSES 有权
用改进的源/漏接触结构制备集成电路的方法以及根据这些工艺制备的集成电路

PROCESSES FOR PREPARING INTEGRATED CIRCUITS WITH IMPROVED SOURCE/DRAIN CONTACT STRUCTURES AND INTEGRATED CIRCUITS PREPARED ACCORDING TO SUCH PROCESSES
Abstract:
Processes for preparing an integrated circuit for contact landing, processes for fabricating an integrated circuit, and integrated circuits prepared according to these processes are provided herein. An exemplary process for preparing an integrated circuit for contact landing includes providing a semiconductor structure that includes a transistor with source and drain regions, wherein at least one of the source and drain regions has a shaped contact structure overlaid with a contact etch stop layer and a pre-metal dielectric material. The pre-metal dielectric material is removed with one or more anisotropic etches, including at least one anisotropic etch selective to the pre-metal dielectric material. And, the contact etch stop layer overlaying the shaped contact structure is removed with a third anisotropic etch selective to the contact etch stop layer material to expose the shaped contact structure.
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