Invention Grant
- Patent Title: Method and system for etching high-k dielectric materials
- Patent Title (中): 蚀刻高k电介质材料的方法和系统
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Application No.: US11713617Application Date: 2007-03-05
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Publication No.: US07781340B2Publication Date: 2010-08-24
- Inventor: Lee Chen , Audunn Ludviksson
- Applicant: Lee Chen , Audunn Ludviksson
- Applicant Address: JP Tokyo
- Assignee: Tokyo Electron Limited
- Current Assignee: Tokyo Electron Limited
- Current Assignee Address: JP Tokyo
- Main IPC: H01L21/00
- IPC: H01L21/00

Abstract:
A system and a method to remove a layer of high-k dielectric material during the manufacturing of an integrated circuit. In one embodiment of the invention, an etch reactant is employed to form volatile etch products when reacted with high-k layers. Alternately, high-k layers can be anisotropically etched of in accordance with a patterned photoresist or hard mask, where a hyperthermal beam of neutral atoms is used to aid in the reaction of an etch reactant with a high-k layer. Alternately, a hyperthermal beam of neutral atoms or a plasma treatment can used to modify a high-k layer, and subsequently etch the modified high-k layer utilizing an etch reactant that reacts with the modified high-k layer. In still another embodiment of the invention, the hyperthermal beam of neutral atoms is used to etch a high-k layer through physical bombardment of the high-k layer.
Public/Granted literature
- US20070155181A1 Method and system for etching high-k dielectric materials Public/Granted day:2007-07-05
Information query
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