Field emission electron source and field emission device
AssigneesTsinghua University, Hon Hai Precision Industry Co., Ltd.
InventorsCai-Lin Guo, Jie Tang, Peng Liu, Shou-Shan Fan
Life of this patent
Estimating the term…
Abstract
A field emission electron source includes a linear carbon nanotube structure, an insulating layer and at least one conductive ring. The linear carbon nanotube structure has a first end and a second end. The insulating layer is located on outer surface of the linear carbon nanotube structure. The first conductive ring includes a first ring face 1301 and a second ring face, an end surface of the linear carbon nanotube structure, and the first ring face are coplanar.
Claims20
A field emission electron source, comprising:
- a linear carbon nanotube structure comprising a first end and a second end;
- an insulating layer located on an outer surface of the linear carbon nanotube structure;
- and
- a first conductive ring located on an insulating layer outer surface at the first end of the linear carbon nanotube structure, wherein the first conductive ring comprises a first ring face and a second ring face, the first ring face and an end surface of the first end of the linear carbon nanotube structure are coplanar.
A field emission electron source, comprising:
- a linear carbon nanotube structure, wherein the linear carbon nanotube structure has a first end surface and a second end surface opposite to the first end surface;
- an insulating layer coated on outer surface of the linear carbon nanotube structure;
- and
- a conductive ring located on at least one end of the linear carbon nanotube structure and insulated from the linear carbon nanotube structure by the insulating layer, wherein the first end surface and the second end surface of the linear carbon nanotube structure are exposed from the insulating layer, and the first end surface of the linear carbon nanotube structure is coplanar with a ring surface of conductive ring adjacent to the first end surface.
A field emission device, comprising:
- a cathode electrode;
- and
- a field emission electron source having a first end and a second end, wherein the first end is electrically connected to the cathode electrode, and the second end extends away from the cathode electrode;
- wherein the field emission electron source comprises a linear carbon nanotube structure, an insulating layer located on the linear carbon nanotube structure, and a first conductive ring located on the second end and insulated from the linear carbon nanotube structure, and the first conductive ring is an gate electrode of the field emission device, wherein the linear carbon nanotube structure comprises a first end surface and a second end surface opposite to the first end surface along an axis of the linear carbon nanotube structure, the second end surface is exposed from the second end of the field emission electron source, and coplanar with a ring surface of the first conductive ring adjacent to the second end.
Dependencies are inferred from the claim text.