Invention Grant
- Patent Title: Method for the fabrication of electron field emission devices including carbon nanotube electron field emission devices
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Application No.: US16527533Application Date: 2019-07-31
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Publication No.: US10910185B2Publication Date: 2021-02-02
- Inventor: Mehmet Ozgur , Paul Sunal , Lance Oh , Michael Huff , Michael Pedersen
- Applicant: CORPORATION FOR NATIONAL RESEARCH INITIATIVES
- Applicant Address: US VA Reston
- Assignee: CORPORATION FOR NATIONAL RESEARCH INITIATIVES
- Current Assignee: CORPORATION FOR NATIONAL RESEARCH INITIATIVES
- Current Assignee Address: US VA Reston
- Agency: Nixon & Vanderhye P.C.
- Main IPC: H01J1/304
- IPC: H01J1/304 ; H01J9/02 ; B82Y40/00 ; B82Y10/00

Abstract:
The present invention is directed to a method for the fabrication of electron field emitter devices, including carbon nanotube (CNT) field emission devices. The method of the present invention involves depositing one or more electrically conductive thin-film layers onto an electrically conductive substrate and performing lithography and etching on these thin film layers to pattern them into the desired shapes. The top-most layer may be of a material type that acts as a catalyst for the growth of single- or multiple-walled carbon nanotubes (CNTs). Subsequently, the substrate is etched to form a high-aspect ratio post or pillar structure onto which the previously patterned thin film layers are positioned. Carbon nanotubes may be grown on the catalyst material layer. The present invention also described methods by which the individual field emission devices may be singulated into individual die from a substrate.
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