CN100555544C - Field emission pixel tube - Google Patents
Field emission pixel tube Download PDFInfo
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- CN100555544C CN100555544C CNB2006100618048A CN200610061804A CN100555544C CN 100555544 C CN100555544 C CN 100555544C CN B2006100618048 A CNB2006100618048 A CN B2006100618048A CN 200610061804 A CN200610061804 A CN 200610061804A CN 100555544 C CN100555544 C CN 100555544C
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- field emission
- emission pixel
- tube
- pixel tube
- metal cylinder
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Abstract
The present invention relates to a kind of field emission pixel tube.This field emission pixel tube comprises: a hollow housing, this hollow housing has a light out part, the inwall of this light out part is provided with a fluorescence coating and an anode layer successively, described hollow housing inside is vacuum-packed, a metal cylinder is arranged in this hollow housing, this metal cylinder inwall is provided with the pulp layer of one deck through solidifying, and this pulp layer contains the nano material of conduction, and this metal cylinder is electrically connected with at least one cathode electrode.The metal cylinder of this field emission pixel tube has very strong shielding action to electric field, can effectively weaken the electric field of carbon nano tube surface, makes that carbon nano-tube can be in stable work under 10 kilovolts or the higher voltage.
Description
Technical field
The present invention relates to a kind of field emission component, relate in particular to a kind of field emission pixel tube.
Background technology
Field emitting electronic source and utilize this electron source impact fluorescence material and luminous field emission light-emitting technology is applied in fields such as field emission displayses.This lift-off technology is under vacuum environment, utilizes the extra electric field effect that the electron excitation at tip is come out, and shows thereby electron bombard fluorescent material sends visible light.In traditional field emitting electronic source, generally adopt fine molybdenum tip or silicon tip as electron transmitting terminal, along with the development of nanometer technology, also adopt CNT (carbon nano-tube) recently as electron transmitting terminal.
In order effectively to utilize the luminous efficiency of fluorescent material, the pixel pipe is generally operational under the high pressure about 10 kilovolts, however carbon nano-tube depress at forceful electric power and be easy to damage, cause emission unstable.
Summary of the invention
In view of this, provide a kind of field emission component of steady operation under high pressure real for necessary.
A kind of field emission pixel tube, it comprises: a hollow housing, this hollow housing has a light out part, the inwall of this light out part is provided with a fluorescence coating and an anode layer successively, described hollow housing inside is vacuum-packed, and a metal cylinder is arranged in this hollow housing, and this metal cylinder inwall is provided with the pulp layer of one deck through solidifying, this pulp layer contains the nano material of conduction, and this metal cylinder is electrically connected with at least one cathode electrode.
With respect to prior art, the metal cylinder of described field emission pixel tube has very strong shielding action to electric field, the slurry that will contain carbon nano-tube is applied to the inwall of metal cylinder as negative electrode, can effectively weaken the electric field around the carbon nano-tube, make that carbon nano-tube can be in stable work under 10 kilovolts or the higher voltage.
Description of drawings
Fig. 1 is the generalized section of the field emission pixel tube that provides of the embodiment of the invention.
Fig. 2 is the schematic cross-section of the field emission pixel tube that provides of the embodiment of the invention along II-II direction among Fig. 1.
Embodiment
Below with reference to accompanying drawing the present invention is described in further detail.
Present embodiment provides a kind of field emission pixel tube 10.See also Fig. 1 and Fig. 2, this field emission pixel tube 10 comprises: a hollow housing 11, this hollow housing 11 has a light out part 12, the inwall of this light out part 12 is provided with a fluorescence coating 13 and an anode layer 14 successively, described hollow housing 11 inside are vacuum-packed, and a metal cylinder 16 is arranged in this hollow housing 11, and these metal cylinder 16 inwalls are provided with the pulp layer 17 of one deck through solidifying, this pulp layer 17 contains the nano material of conduction, and this metal cylinder 16 is electrically connected with at least one cathode electrode.This metal cylinder 16 is electrically connected with two cathode electrodes respectively in the present embodiment, and these two cathode electrodes are respectively first cathode electrode 18 and second cathode electrode 19.
These hollow housing 11 inside are vacuum-packed, and in the present embodiment, this housing 11 is a hollow circular cylinder, and the material of this housing 11 is quartz glass or glass.Be understandable that, the polygon prism that this housing 11 can also be a hollow, the light out part 12 of this housing 11 can also can be sphere or aspheric surface for the plane simultaneously, those skilled in the art can select according to actual conditions.
Described fluorescence coating 13 is deposited on the inwall of light out part 12.This fluorescence coating 13 can be made up of white fluorescent powder or color phosphor.When electron bombard fluorescence coating 13, can send white or color visible.Described anode layer 14 is plated on light out part 12 inwalls that deposit fluorescence coating 13 and with fluorescence coating 13 and covers, and plays conduction and the luminous effect of reflected fluorescent light powder.This anode layer 14 is a metal film, has good electrical conductivity and minute surface evenness, and in the present embodiment, this anode layer 14 is the aluminium film.
In the present embodiment, described metal cylinder 16 is a cylinder, and the central shaft of this metal cylinder 16 is perpendicular to light out part 12.Be understandable that this metal cylinder 16 can also be other tubular structures such as square tube, polygon tube.
Described metal cylinder 16 inwalls have the pulp layer 17 of one deck through solidifying, this pulp layer 17 contains the nano material of conduction, described nano material can be selected from carbon nano-tube, carbon nano rod, carbon 60, carbon nano-particle, conducting metal or semi-conductive nanotube, nano wire, nanometer rods, in nano belt and composition thereof any one selected carbon nano-tube for use in present embodiment.The pulp layer 17 for preparing is coated on metal cylinder 16 inwalls and, with rubber friction metal cylinder 16 inwalls, the carbon nano-tube in the more pulp layer 17 is appeared at last, strengthen its field emission performance its curing.The distance at pulp layer 17 edges and metal cylinder 16 edges is depended in the shielding action of 16 pairs of carbon nano-tube emitters of metal cylinder, and distance is big more, and shielding action is strong more; Also depend on the diameter of metal cylinder 16, diameter is more little, and shielding action is strong more.
Described metal cylinder 16 is electrically connected with first cathode electrode 18 and second cathode electrode 19 respectively.This first cathode electrode 18 passes described housing 11 and extends to housing 11 outsides with this second cathode electrode 19.Can adopt the sealing of glass sealing technology at the position that first cathode electrode 18 and second cathode electrode 19 pass, to guarantee the sealing of housing 11 inside.
This field emission pixel tube 10 further comprises an anode electrode 15.This anode electrode 15 is electrically connected with anode layer 14.This anode electrode 15 passes described housing 11 and extends to housing 11 outsides.Can adopt the sealing of glass sealing technology at the position that anode electrode 15 passes, to guarantee the sealing of housing 11 inside.
This field emission pixel tube 10 further comprises a getter 20, is used to adsorb residual gas in the field emission pixel tube 10, keeps the vacuum degree of field emission pixel tube 10 inside.This getter 20 can be evaporable air-absorbing agent, is formed on housing 11 inwalls of close first cathode electrode 18 and second cathode electrode 19 in the method by the high-frequency heating evaporation after housing 11 sealing-ins.This getter 20 also can be nonevaporable getter, is fixed on housing 11 inwalls near first cathode electrode 18 and second cathode electrode 19, perhaps is fixed on the inwall or the outer wall of metal cylinder 16.
This field emission pixel tube 10 further comprises a steam vent 21, and these steam vent 21 external vacuum pumps are in order to vacuumize housing 11.During encapsulation, carry out last encapsulation again after earlier making field emission pixel tube 10 reach certain vacuum degree by steam vent 21.
When these field emission pixel tube 10 work, give respectively and add between the anode electrode 15 and first cathode electrode 18, second cathode electrode 19 that voltage forms electric field, pass through electric field action, carbon nano-tube in the pulp layer 17 of metal cylinder 11 inwalls is launched electronics, penetration of electrons anode layer 14 impact fluorescence layers 13 send visible light.A visible light part directly penetrates from light out part 12, and a part is penetrated on anode layer 14.Anode layer 14 penetrates its reflection and the final light out part 12 that sees through.A plurality of such field emission pixel tubes 10 are lined up and can be thrown light on or the information demonstration.
With respect to prior art, 16 pairs of electric fields of the metal cylinder of described field emission pixel tube 10 have very strong shielding action, the slurry that will contain carbon nano-tube is applied to the inwall of metal cylinder 16 as negative electrode, then can effectively weaken the electric field around the carbon nano-tube, make that carbon nano-tube can be in stable work under 10 kilovolts or the higher voltage.
In addition, those skilled in the art can also do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.
Claims (9)
1. field emission pixel tube, it comprises:
A hollow housing, this hollow housing has a light out part, the inwall of this light out part is provided with a fluorescence coating and an anode layer successively, described hollow housing inside is vacuum-packed, it is characterized in that: a metal cylinder is arranged in this hollow housing, this metal cylinder inwall is provided with the pulp layer of one deck through solidifying, and this pulp layer contains the nano material of conduction, and this metal cylinder is electrically connected with at least one cathode electrode.
2. field emission pixel tube as claimed in claim 1 is characterized in that, this hollow housing is a hollow circular cylinder.
3. field emission pixel tube as claimed in claim 1 is characterized in that, this hollow housing is a glass.
4. field emission pixel tube as claimed in claim 1 is characterized in that, this anode layer is the aluminium film.
5. field emission pixel tube as claimed in claim 1 is characterized in that, further comprises an anode electrode, and this anode electrode is electrically connected with described anode layer, and passes described housing and extend to this outside.
6. field emission pixel tube as claimed in claim 1 is characterized in that, this at least one cathode electrode passes described housing and extends to this outside.
7. field emission pixel tube as claimed in claim 1 is characterized in that this fluorescence coating is made up of white fluorescent powder or color phosphor.
8. field emission pixel tube as claimed in claim 1 is characterized in that, further comprises getter, and this getter is formed near on the inner walls of this at least one cathode electrode.
9. field emission pixel tube as claimed in claim 1 is characterized in that, this nano material is selected from any one in carbon nano-tube, carbon 60, carbon nano-particle, nano wire, nanometer rods, nano belt and composition thereof.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100618048A CN100555544C (en) | 2006-07-26 | 2006-07-26 | Field emission pixel tube |
| US11/565,528 US7635945B2 (en) | 2006-07-21 | 2006-11-30 | Field emission device having a hollow shaped shielding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100618048A CN100555544C (en) | 2006-07-26 | 2006-07-26 | Field emission pixel tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101114563A CN101114563A (en) | 2008-01-30 |
| CN100555544C true CN100555544C (en) | 2009-10-28 |
Family
ID=39022817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100618048A Active CN100555544C (en) | 2006-07-21 | 2006-07-26 | Field emission pixel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100555544C (en) |
-
2006
- 2006-07-26 CN CNB2006100618048A patent/CN100555544C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 碳纳米管场发射显示器的研究进展. 朱长纯，刘兴辉.发光学报，第26卷第5期. 2005 |
| 碳纳米管场发射显示器的研究进展. 朱长纯，刘兴辉.发光学报，第26卷第5期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101114563A (en) | 2008-01-30 |
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