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 plurality of cathode electrodes, and a plurality of electron emission units. The insulative substrate has a top surface and a bottom surface. The insulative substrate defines a plurality of openings. The cathode electrodes are located on the bottom surface. Each of the 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.
Claims20
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 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, and the second portion is received in one corresponding opening, each of the plurality of electron emission units comprises two or more linear carbon nanotube structures, each of the two or more linear carbon nanotube structures comprising a field emission end positioned near center axes of the plurality of openings and spaced from each other.
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 located on the bottom surface;
- a plurality of gate electrodes located on the top surface;
- and
- a plurality of electron emission units, and each of the plurality of electron emission units comprising at least one linear carbon nanotube structure;
- the at least one linear carbon nanotube structure comprises a fixing portion and a field emission portion having a field emission end, wherein the fixing portion is attached to the bottom surface and fixed between the insulative substrate and one corresponding cathode electrode, and the field emission portion is received in one corresponding opening, a distance between the field emission end and a top surface of one corresponding gate electrode is less than 5 micrometers.
A display, comprising:
- a cathode substrate, an anode substrate, a field emission cathode device, and a field emission anode device;
- wherein the field emission cathode device comprises:
- 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 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, and the second portion is received in one corresponding opening, each of the plurality of electron emission units comprises two or more linear carbon nanotube structures, each of the two or more linear carbon nanotube structures comprising a field emission end positioned near center axes of the plurality of openings and spaced from each other.
Dependencies are inferred from the claim text.