CN1142574C - Method for eliminating residual gas in field emission display and gas released by material - Google Patents
Method for eliminating residual gas in field emission display and gas released by material Download PDFInfo
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- CN1142574C CN1142574C CNB011373482A CN01137348A CN1142574C CN 1142574 C CN1142574 C CN 1142574C CN B011373482 A CNB011373482 A CN B011373482A CN 01137348 A CN01137348 A CN 01137348A CN 1142574 C CN1142574 C CN 1142574C
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- emission display
- field emission
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- ion trap
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Abstract
The present invention relates to a method for eliminating residual gas in a field emission display device and gas released by materials, particularly to a technological method for eliminating residual gas in a field emission display and gas discharged by materials by a magnetic ion trap. In the method for eliminating residual gas in a field emission display device and gas released by materials, a gas eliminating mode by the magnetic ion trap is adopted in an ageing technology of the field emission display device. A magnetic field as the magnetic ion trap is arranged outside the field emission display, the magnetic field penetrates through the field emission display, and a positive potential higher than the electrode potential of a cathode is added on a door electrode of the field emission display. After a field of the tip of a micro-tip electron emitter reaches a certain strength, the micro-tip electron emitter starts to emit electrons; therefore, the residual gas is eliminated. The magnetic field as the magnetic ion trap can be the alternating-current magnetic field and the direct-current magnetic field. In the ageing process of the field emission display, the whole field emission display can be simultaneously aged, the display can be also divided into a plurality of areas, the areas are respectively aged, and the magnetic field as the magnetic ion trap acts in view of the aged areas.
Description
One, technical field:
The present invention is a kind of method of eliminating residual gas in the feds, and especially a kind of magnetic ion trap of using is eliminated the process that residual gas and material outgassing in the display device are penetrated in the field.
Two, background technology:
Flat-panel display device is a focus of present display development, the many flat-panel monitors of research have LCD, plasma display, Field Emission Display etc. at present, LCD is because be passive luminous, so brightness is lower, there is the problem that the visual angle is little, response speed is slow simultaneously; The plasma scope size is big, but acquires a certain degree of difficulty in luminous efficiency and high-resolution demonstration; And Field Emission Display is the flat-panel display device of a kind of cold cathode emission, active illuminating, have luminosity height, low in energy consumption, characteristics such as the visual angle big, suitable high-resolution demonstration, therefore to the research of feds very active always, the particularly appearance of carbon nano-tube material in recent years, make that but the printing-type field emission display becomes possibility, have vast potential for future development
Field emission display is when work, between gate electrode and negative electrode, add certain voltage, make the field intensity of little sharp emitter tip enough strong, so that can make little sharp emitter tip emitting electrons, change the intensity that pressure between gate electrode and the negative electrode can be controlled little sharp reflector emitting electrons.Electrons emitted is bombarded glimmering powder and is made it luminous under the effect of anode voltage, because little sharp size is very little, can realize that therefore high-resolution shows; Because Field Emission Display is the flat panel display of electron bombard fluorescent material, so luminosity can be very high, and what the visual angle also can be very is big.
Also there is the dielectric support that supports front-back baseboard in field emission display at device inside simultaneously because the space of each display unit is very little, therefore will reach relatively difficulty of high vacuum at device inside.But Field Emission Display is to the vacuum requirements height very of device inside, and vacuum degree has directly influenced the life-span of device.This mainly be because in the process of electronics anode motion can and device in residual gas molecule and the fluorescent material gas molecule collision of under electron bombard, emitting, and make gas molecule be ionized into ion.Positively charged ion quickens and bombards on little sharp reflector, gate electrode and other positions to negative electrode under effect of electric field, if getter is arranged on the gate electrode, the ion that bombards so on the gate electrode will be caught by getter, make vacuum degree obtain certain keeping.But, will finally bombard on little sharp reflector according to the opposite direction motion of electron trajectory greatly in the gas ion according to the movement locus of charged particle in electric field.The bombardment of ion can enter little sharp material surface, makes little point surface form resistive formation, and the bombardment of ion simultaneously can make the most advanced and sophisticated impaired of little point, and these all can make most advanced and sophisticated field intensity weaken, and cause the reduction of emission current, finally make the lost of life of Field Emission Display.
Three, summary of the invention:
(1) goal of the invention
The purpose of this invention is to provide residual gas and material outgassing in a kind of elimination feds, improve the vacuum degree of feds, and a kind of method of eliminating residual gas and material outgassing in the field emission display of not damaging the material behavior of device surface and emissivities.
(2) technical scheme
Method of the present invention is in the technique for ageing of field emission display, adopts the mode of magnetic ion trap degasification, promptly is provided with one group of magnetic field as the magnetic ion trap in the outside of Field Emission Display, and emission display is passed in this magnetic field; On the gate electrode of Field Emission Display inside, add the positive potential higher than cathode electrode current potential, make after the electric field at little sharp electronic emitter tip reaches certain intensity, little sharp electronic emitter begins emitting electrons, thereby residual gas is eliminated, magnetic field as the magnetic ion trap can be AC magnetic field, it also can be D.C. magnetic field, Field Emission Display is being carried out in the process of ageing, can be to whole Field Emission Display while ageing, also display can be divided into several zones ageing respectively, and as the zone effect at ageing of the magnetic field of magnetic ion trap, Field Emission Display can be vertically passed in magnetic ion trap magnetic field, also can become certain included angle to pass with Field Emission Display.
(3) technique effect
Because the charged particle of motion can be deflected by the effect of Lorentz force in magnetic field, if after Field Emission Display exhaust sealing-in, Field Emission Display is carried out technique for ageing, and applying a magnetic field acts on the Field Emission Display, can change the track of electronics and ion like this, make most ion bombardment on gate electrode or getter, thereby eliminate the destruction of the venting of residual gas and material, avoid the change of little sharp surfacing and emission characteristics simultaneously vacuum degree.Because the magnetic ion trap can be called in this magnetic field therefore with ion trap on gate electrode or getter.After technique for ageing was finished, because a large amount of gas ions bombarded access door electrode and getter surface, residual gas and material outgassing amount reduced greatly when operate as normal thereby make.Can guarantee the operate as normal and the long life-span of device.
The invention provides the magnetic ion trap technology in the Field Emission Display technique for ageing, use the venting that this technology can reduce residual gas and material in the device, improve the vacuum degree in the device, prolong the life-span of device.
Magnetic ion trap technology in the Field Emission Display technique for ageing is suitable for all types of Field Emission Displays, is used to improve the vacuum degree of feds inside, prolongs the life-span of device.
In the technique for ageing of Field Emission Display, add the voltage signal higher on the gate electrode of display than cathode voltage, when this voltage signal was enough big, little sharp reflector had the electronics emission, improves gate electrode voltage, makes little sharp emitting electrons reach certain intensity.On the anode of display, add the voltage signal higher, when voltage is enough high, will make light-emitting phosphor than gate electrode voltage.That improves that anode voltage can make fluorescent material luminously brings up to certain brightness.
When technique for ageing began, on Field Emission Display, electronics changed the direction of motion under the effect in magnetic field with a action of a magnetic field, and the gas molecule collision of electronics and residual gas and material outgassing makes gas molecule ionization.Most gas ion is deflected other positions beyond little sharp reflector in gate electrode and the device under the effect in magnetic field, and is hunted down because of entering material surface, thereby makes magnetic field play the effect of magnetic ion trap.
For magnetic field as the magnetic ion trap, can be AC magnetic field, also can be D.C. magnetic field, AC magnetic field is because can make the zone of electronic scanning fluorescent material big, therefore can make the phosphor material powder venting fully, have more gas to be caught, so effect can be better by ion trap.
Four, description of drawings:
Fig. 1 is that the present invention adds the structural representation of magnetic ion in Field Emission Display.The magnetic field 13 that front glass substrate 1, back glass substrate 2, cathode electrode 3, little sharp electronic emitter 4, gate electrode 5, transparent conductive anode 6, fluorescent material 7, dielectric 8, medium 9, vacuum seal 10, medium interval 11, getter 12, magnetic ion trap are arranged in the base.
Five, embodiment
It comprises a front glass substrate 1 and a parallel relative back glass substrate 2 with front glass substrate that effectively shows working face as this display device Field Emission Display; Be provided with many cathode electrodes that are parallel to each other 3 and position on the glass substrate in the back thereon and keep the little sharp electronic emitter 4 that is electrically connected; Little sharp electronic emitter is beginning emitting electrons when its electric field reaches certain intensity under the control of the gate electrode corresponding with it 5, emission current increases with the increase of electric field strength; Electrons emitted is quickened in anode under the effect that is positioned at the transparent conductive anode 6 on the prebasal plate, the configuration that is orthogonal of anode and negative electrode; And on the fluorescent material 7 of prebasal plate, make light-emitting phosphor by bombardment behind the vacuum space, anode that light can be by electrically conducting transparent and front glass substrate and can be in sight.Isolate for the electricity that guarantees gate electrode 5 and cathode electrode 3, insulating medium layer 8 is arranged between gate electrode and cathode electrode, between each cathode electrode, have medium 9 to isolate.Entire device is sealed into true container by vacuum seal 10 with forward and backward glass substrate, and to make device inside by gas extraction system be vacuum.For glass substrate before and after making can also be shaped on medium interval 11 at device inside with the pressure differential of bearing between external pressure and the inner vacuum, glass substrate before and after being used for supporting.For allowing to that the venting of the phosphor material powder in the course of work is removed, keep the high vacuum of device inside, sometimes also on the gate electrode of device or other positions make getters 12.In the technique for ageing of field emission display, adopt the mode of magnetic ion trap degasification, promptly be provided with one group of magnetic field 13 as the magnetic ion trap in the outside of Field Emission Display, emission display is passed in this magnetic field, on Field Emission Display interior door electrode 5, add than the high positive potential of cathode electrode 3 current potentials, make after the field at little sharp electronic emitter 4 tips reaches certain intensity, little sharp electronic emitter 4 beginning emitting electrons, the gas molecule collision of electronics and residual gas and material outgassing, make gas molecule ionization, thereby and under the effect in magnetic field, caught residual gas is eliminated by other positions beyond gate electrode and the little sharp reflector.Magnetic field 13 as the magnetic ion trap can be AC magnetic field, also can be D.C. magnetic field.Field Emission Display is being carried out in the process of ageing, can also display can be divided into several zones ageings respectively whole Field Emission Display ageing simultaneously, and as the zone effect at ageing of the magnetic field 13 of magnetic ion trap.Field Emission Display can be vertically passed in magnetic ion trap magnetic field 13, also can become certain included angle to pass with Field Emission Display.
Claims (3)
1, a kind of method of eliminating residual gas and material outgassing in the field emission display, it is characterized in that in the technique for ageing of field emission display, adopt the mode of magnetic ion trap degasification, promptly be provided with one group of magnetic field (13) as the magnetic ion trap in the outside of Field Emission Display, emission display is passed in this magnetic field, on the gate electrode (5) of Field Emission Display inside, add than the high positive potential of cathode electrode (3) current potential, make after the most advanced and sophisticated electric field of little sharp electronic emitter (4) reaches certain intensity, little sharp electronic emitter (4) beginning emitting electrons, thus residual gas is eliminated.
2, a kind of method of eliminating residual gas and material outgassing in the field emission display according to claim 1 is characterized in that the magnetic field (13) as the magnetic ion trap can be AC magnetic field, also can be D.C. magnetic field.
3, a kind of method of eliminating residual gas and material outgassing in the field emission display according to claim 1 and 2, it is characterized in that Field Emission Display being carried out in the process of ageing, can be to whole Field Emission Display while ageing, also display can be divided into several zone ageings respectively, and as the zone effect at ageing of the magnetic field (13) of magnetic ion trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011373482A CN1142574C (en) | 2001-12-05 | 2001-12-05 | Method for eliminating residual gas in field emission display and gas released by material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011373482A CN1142574C (en) | 2001-12-05 | 2001-12-05 | Method for eliminating residual gas in field emission display and gas released by material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1353440A CN1353440A (en) | 2002-06-12 |
| CN1142574C true CN1142574C (en) | 2004-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011373482A Expired - Fee Related CN1142574C (en) | 2001-12-05 | 2001-12-05 | Method for eliminating residual gas in field emission display and gas released by material |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6838666B2 (en) * | 2003-01-10 | 2005-01-04 | Purdue Research Foundation | Rectilinear ion trap and mass analyzer system and method |
| CN100421203C (en) * | 2003-06-16 | 2008-09-24 | 东南大学 | Method for lowering off drop of cathode emission and level of residual gas |
| CN102677160B (en) * | 2012-05-29 | 2015-02-04 | 江苏中电振华晶体技术有限公司 | Seeding method and system for growing sapphire by using kyropoulos method |
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| CN1353440A (en) | 2002-06-12 |
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