Field emission cathode device and display using the same
AssigneesTsinghua University, Hon Hai Precision Industry Co., Ltd.
InventorsHai-Yan Hao, Peng Liu, Jie Tang, Yang Wei, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
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Abstract
A field emission cathode device includes an insulative substrate, a number of cathode electrodes, and a number of liner electron emission units. The insulative substrate has a top surface and a bottom surface. The insulative substrate defines a number of openings. The cathode electrodes are located on the bottom surface. Each of the linear electron emission units has a first portion secured between the insulative substrate and one corresponding cathode electrode and a second portion received in one corresponding opening.
Claims12
A field emission cathode device, comprising:
- an insulative substrate having a top surface and a bottom surface, and the insulative substrate defining a plurality of openings;
- a plurality of cathode electrodes attached to the bottom surface;
- and
- a plurality of linear electron emission units each having a first portion and a second portion, wherein the first portion is attached to the bottom surface and secured between the insulative substrate and one corresponding cathode electrode, the second portion is received in one corresponding opening, and each of the plurality of electron emission units comprises a carbon nanotube wire comprising a plurality of carbon nanotubes substantially oriented along a length direction of the carbon nanotube wire or helically oriented around an axial direction of the carbon nanotube wire.
A field emission cathode device, comprising:
- an insulative substrate having a top surface and a bottom surface, and the insulative substrate defining an opening;
- a cathode electrode attached to the bottom surface;
- and
- a linear carbon nanotube structure comprising a plurality of carbon nanotubes substantially oriented along a length direction of the linear carbon nanotube structure or substantially helically oriented around an axial direction of the linear carbon nanotube structure, wherein the linear carbon nanotube structure has a fixing portion and a field emission portion connected to the fixing portion, the fixing portion is attached to the bottom surface and secured between the insulative substrate and the cathode electrode, and the field emission portion is received in the opening.
A field emission cathode device, comprising:
- an insulative substrate having a top surface and a bottom surface, and the insulative substrate defining a plurality of openings;
- a plurality of cathode electrodes attached to the bottom surface;
- and
- a plurality of linear electron emission units each having a first portion and a second portion, wherein the first portion is attached to the bottom surface and secured between the insulative substrate and one corresponding cathode electrode, the second portion is received in one corresponding opening, and each of the plurality of electron emission units comprises a carbon nanotube wire and a metal supporting wire substantially parallel with or twisted with the carbon nanotube wire.
Dependencies are inferred from the claim text.