CN1097836C - Field emission cathode and methods in production thereof - Google Patents
Field emission cathode and methods in production thereof Download PDFInfo
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- CN1097836C CN1097836C CN96191941A CN96191941A CN1097836C CN 1097836 C CN1097836 C CN 1097836C CN 96191941 A CN96191941 A CN 96191941A CN 96191941 A CN96191941 A CN 96191941A CN 1097836 C CN1097836 C CN 1097836C
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- field
- emitting surface
- transmitting cathode
- transmitting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/30—Cold cathodes, e.g. field-emissive cathode
- H01J1/304—Field-emissive cathodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/30—Cold cathodes
- H01J2201/304—Field emission cathodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2329/00—Electron emission display panels, e.g. field emission display panels
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- Cold Cathode And The Manufacture (AREA)
- Discharge Lamp (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
An improved field emission cathode and methods for fabricating such a cathode are disclosed. In the methods of the invention, the field emission cathode is made from at least one body containing a first substance. The method steps include a preparation of irregularities in an emitting surface of the body, adding to the emitting surface of the body ions of a second substance with a low work function, and modifying the emitting surface by inducing field emission in applying a variable electric field to the body and increasing the field strength in steps.
Description
The present invention relates to the field-transmitting cathode that a kind of light source and similar device thereof such as developing plate, cathode ray tube etc. use, and the method for this field-transmitting cathode generation, and feds.
In order to make the field emission light-emitting device become practical, need a kind ofly have more high efficiency field-transmitting cathode than existing negative electrode.In case can access have low work function, high durability, pollution-free composition and field-transmitting cathode cheaply, just might substitute many kinds of light sources with the light source that comprises the field emission apparatus that combines with the fluorescent surface of visible emitting.
For example, now making very big effort and reducing the problem that normally used fluorescent tube brings, this fluorescent tube needs complicated external electric device and comprises the material with negative environmental effect.Present fluorescent tube, utilize gas discharge and divergent-ray to fluorescent material, produce visible light by fluorescent material again.Need a kind of novel emitter to eliminate the shortcoming that present fluorescent tube exists.
United States Patent (USP) 4728851 discloses a kind of field-transmitting cathode in the emitter with memory function, and this field-transmitting cathode comprises the carbon fiber of a diameter in two micron dimensions, and its transmitting terminal is fined away to diameter by corona discharge and is about about 0.2 micron.
United States Patent (USP) 4272699 discloses a kind of field-transmitting cathode in the electron impact ion source device, and this field-transmitting cathode comprises that a beam diameter is about two to ten microns carbon fiber, and the transmitting terminal that it has is cut rather than fined away by any process operation.
More than each file be introduced into as a reference.
An object of the present invention is to provide the method that a kind of field-transmitting cathode generates, wherein this negative electrode has, the morphology of the local high electric field strength of being convenient to realize that electronic field emission needs.Another purpose provides the method that a kind of field-transmitting cathode generates, and wherein this negative electrode has high machinery and electronics durability.Another purpose provides the method that a kind of field-transmitting cathode generates, and wherein this negative electrode has low work function.Another purpose provides the method that a kind of field-transmitting cathode generates, and is minimized comprising the negative environmental effect of the luminescent device of this negative electrode.Another purpose provides the method that a kind of field-transmitting cathode generates, and wherein this negative electrode has useful geometry.Another purpose provides the method that a kind of field-transmitting cathode generates, and wherein this negative electrode has very short switching time in the electronics emission.
Another object of the present invention provides the field-transmitting cathode that a kind of electronic field emission is used, and wherein this negative electrode has the surface geometry that is suitable for high-intensity local electronic field.Another purpose of the field-transmitting cathode of this invention is to obtain a field-transmitting cathode, it has: be beneficial to the rough emitting surface of electronic field emission, high mechanical robustness and high electronics durability, and preferably have a low electric work function, and long service life, the per unit cathode area has high emission energy, the switching time of extremely lacking and comprises the luminescent device of negative electrode in the electronics emission minimized negative environmental effect.
Another object of the present invention is to improve the known luminescent device of its working mechanism or other feds by the field-transmitting cathode that adopts at least one to have above-mentioned feature.
The invention provides a kind of generation method of field-transmitting cathode, this field-transmitting cathode comprises that at least one has the body of first kind of material, wherein said at least one body has at least one to have the emitting surface of at least one uneven part, described method comprises the steps: to change described emitting surface by described at least one body is applied variable electric field, thereby cause electronic field emission and increase described variable electric field in the mode of described at least one uneven part deterioration of limiting described emitting surface from described emitting surface.
The present invention also provides the employing field-transmitting cathode that the method that above-mentioned field-transmitting cathode generates is made.
The present invention also provides a kind of feds, comprises the field-transmitting cathode that at least one method that adopts above-mentioned field-transmitting cathode to generate is made, and wherein said feds also comprises: with described at least one field-transmitting cathode Wehnelt electrode placed apart; Anode; Fluorescence coating; One vacuum chamber; Wherein said field-transmitting cathode, described Wehnelt electrode, described anode and described fluorescence coating in fact all are enclosed in the described vacuum chamber; Described field-transmitting cathode, described Wehnelt electrode and described anode are connected to first, second and tertiary voltage, and described field-transmitting cathode, described Wehnelt electrode and described anode are placed on certain locus, thereby the electronics of described field-transmitting cathode is transmitted on the described fluorescence coating.
In the method for the invention, field-transmitting cathode comprises a body at least, and this body is preferably purified to comprising one first kind of material substantially, and its inside and surface texture are preferably by standardization.This field-transmitting cathode is through steps of processing: through machinery, heat, etching and/or radiation treatment generates these one or more bodies so that its at least one emitting surface has the uneven part of the electronic field emission of being beneficial to; Change emitting surface so that cause electronic field emission by the electric field that applies variation to body from emitting surface, and increase field intensity so that keep the uneven place of emitting surface according to predetermined scheme, the feasible full operating voltage (in a step) that can apply moment, and can not make the cathodic field emission characteristic that any significant deterioration is arranged.This method can may further comprise the steps: second kind of material that will have the work function lower than first kind of material is added to emitting surface and produces the needed electric field strength of electronic field emission so that reduce from emitting surface.
A kind of approach that obtains suitable initial cathode material is that body or original material are heat-treated so that its construction standardization is removed and/or made to other material except that first kind of material.Term " standardization " can be understood as the undefined structure that reduces the original material body and occurs.
The body of negative electrode can have random geometry, includes but not limited to fibrous, stratiform, taper and bulk.Term " uneven place " is interpreted as on emitting surface the non-smooth geometry that forms with regular pattern.
This generation step can more specifically realize by mechanical lapping, spark discharge or ion bombardment.Preferably carry out simultaneously by the generation step that bombardment realizes with following change step.If generate by ion bombardment, then this step can realize with the ion of second kind of material, and it combines interpolation step and generation (and change) step.
If each body is a bundle fiber, the situation that the transmitting terminal of the segment of fiber of bunchy spreads or diverges to then generally can take place in the step of ion bombardment transmitting terminal.Described diffusion is of value to that electronics distributes widely in the emission on the scene.
First kind of material of negative electrode be carbon or material with similarity preferably.Use carbon is good, for example, because when generating the bombardment of the conventional use of neutralization intermediate ion, it has the ability that generates uneven part.Second kind of material (insert) if you are using, can be that caesium or other have the material of low work function.Might be from the solid of selected material, liquid, arbitrary stage in gas stage or by the external action manufacturing on body or generate suitable conductive body.
By with ion bombardment (radiation) with may to add the uneven place that keeps after the step of generation transmitting terminal of (doping) ion be vital for the field emission characteristic of negative electrode.This uneven place can comprise the spike or the taper (little taper) of the carbon that may be doped with caesium.The radius of curvature of this taper preferably defines in the 0.1-100nm magnitude.The step that changes emitting surface is one " burning into (burning-in) " process.Wherein this uneven peak value place that is in is by floating owing to the heat melts of electronic field emission generation.According to the present invention, this process is carefully carried out, thereby has only sharp-pointed or the highest part by floating, and the remaining uneven part that can bear the instantaneous full operating voltage that applies and can not melt.
Variable voltage in changing step, preferably or according to predetermined (continuous) curve apply in each predetermined step, or control voltage applies the maximum derivative of time, so that the local current densities at the taper place (uneven place) of each end of restriction surpasses the possibility of a predetermined value (restriction melting point).Excess molten can cause disadvantageous surface smoothing.If by slowly increase an emission current (field intensity) or in a plurality of steps of the time first time heat can not discharge from taper, then thisly smoothly can become more severe.The local current densities that a kind of possible mode of representing to change the criterion that step should follow is the uneven place of restriction taper surpasses the possibility of a predetermined value.Another kind of mode is that the mode with the described uneven place deterioration that limits described emitting surface increases variable electric field.
In the vacuum environment that contains surplus air (ion), carry out the electric strength that the step that changes emitting surface helps strengthening its emission taper (uneven place), the electric field that wherein applies makes surplus air (ion) will bombard this surface.The benefit of this process is seemingly because along with electric field strength increases in a controlled manner, since the electric current increase cause more anti-electricity the taper fusing and since the energy increase of incident ion more not the taper of anti-mechanical damage can be damaged, thereby produce electronics and the longer emission taper of mechanical robustness continuously.This process provides a kind of emitting surface with durable emission taper.In the process of using this negative electrode, since similar effect recited above, the regeneration that taper can occur launching.
Usually, first of negative electrode kind of material can comprise that a crystal or a grain structure or the two all have.And uneven place might occur with the form of micropore with high concentration class or cell, and wherein this first kind of material has (little) grain structure.On the other hand, this negative electrode also can be just like the slab construction that obtains by pyrography.
Generate, add (for example by bombardment) and change step can be respectively independently or with different using in order to obtain having the field-transmitting cathode of improvement function.Should be appreciated that these steps also can sequentially, side by side or repeatedly be carried out with different combinations.
On a substrate, a more than negative electrode can be coupled to the composite cathode of the geometry that is suitable for concrete luminescent device.
The present invention not only is suitable for electric light, fluorescent tube, cathode ray tube, and is suitable for any other and needs the device of electronic field emission.Even might use the present invention who only uses a taper (uneven place).
Fig. 1 is: each fiber is cut into chunks and to each fiber step of heat treatment after, the part of a bundle fiber of forming by the plurality of fibers that constitutes a field-transmitting cathode of the present invention;
Fig. 2 is: fiber shown in Figure 1, and after carrying out the ion bombardment step, the situation that the transmitting terminal of each segment of fiber diverges to;
Fig. 3 be in general prepare on a surface that subsequent step is used for launching, the schematic diagram of the section of possible " coarse " of the end surfaces of the segment of fiber of Fig. 1 specifically.
Fig. 4 further is changed in subsequent step with the emitting surface that is used to launch, the schematic diagram of the section of " multi-stylus " of the end surfaces of the segment of fiber of Fig. 2 specifically.
Fig. 5 be in general be ready to and be changed after the emitting surface that is used to launch, specifically the end surfaces of a segment of fiber shown in Figure 2 is revised down the schematic diagram of the section of possible " smoothly " behind the end of segment of fiber with a variable voltage effect.
Fig. 6 is: the field-transmitting cathode of the present invention that distributes in the on-chip parent in luminescent device, it has modulation grid, anode, the fluorescence coating of working in the vacuum glass container.
In a preferred method of the invention, this field-transmitting cathode is to be made by the fiber material that comprises first kind of material, and this method at first may further comprise the steps: with the plurality of fibers combination of fiber material; The bundle that fiber material is made cuts through machinery or fusing, and every bundle comprises a plurality of segment of fiber with predetermined length; Segment of fiber is heat-treated removing other material beyond first kind of material, and/or make the construction standardization of first kind of material in each segment of fiber.
Cut with heat treatment after, all there is intrinsic uneven place in the transmitting terminal of each segment of fiber of every bundle fiber.Secondly this method comprises step: thus help electronic field emission (at uneven place or the taper place is general form stronger internal field) with the transmitting terminal of ionizing radiation segment of fiber with the uneven place that strengthens and improve transmitting terminal; Change transmitting terminal by variable voltage being applied to segment of fiber and increasing variable voltage according to predetermined scheme, thereby from this transmitting terminal emitting electrons field interval, the uneven place that keeps transmitting terminal, make to apply full operating voltage instantaneously, and can not make field emission characteristic that any remarkable deterioration is arranged at negative electrode.Radiation and change step can be carried out in the vacuum environment that comprises the surplus air ion simultaneously.Ion bombardment may relate to add to have than first kind of material ion of second kind of material of low work function more.
For example, commercially available at first from the market polyacrylonitrile carbon fiber, or other suitable material that comprises carbon begins, and carbon fiber is formed negative electrode through machine cuts.With reference to figure 1 and Fig. 2, field-transmitting cathode of the present invention comprises that one has the fibre bundle 1 of the carbon fiber 3 of spoke side 2.In fibre bundle 1, have into hundred or more fibers 3.The diameter of fiber 3 is in several micrometer ranges.For clear, just sub-fraction segment of fiber illustrated in figures 1 and 2.
At the first step of preparatory stage, the fibre bundle that is cut is preferably in the open air to be elevated to greater than 500 ℃ of temperature of keeping about 8-10 minute then with about 1.5 hours and heat-treats.This processing has improved emitting surface and has produced the ability of launching uneven place effectively.Figure 1 shows that the part of the bundle 1 of the fiber 3 that after Overheating Treatment, has transmitting terminal 2.Figure 3 shows that after Overheating Treatment, the section 5 of a fiber 4, transmitting terminal section 5 has uneven place.
Next step of preparation transmitting terminal carries out with change (" burning into ") step in vacuum chamber.Room pressure is about 10
-6Torr this means the indoor surplus air that contains.When an enough strong electron field is added to negative electrode, produce the electronics emission from transmitting terminal.The electric field that applies also causes the ion of surplus air to quicken to rush at emitting surface and collision produces new uneven place.Along with electric field is strengthened, can reach certain level in the most sharp-pointed uneven place (spike) emission, this can make their local meltings.If electron field intensity is to increase lentamente, then fusing will be restricted and the very major part at uneven place is held, and the field emission characteristic of transmitting terminal also can keep.Electric field is increased to full operating voltage from zero and preferably was divided into for five steps (might be five steps that equate) and carries out, and each step was carried out a few minutes, as ten minutes.
Fig. 2 is the part of bundle 1 of the fiber 3 that has transmitting terminal 2 after radiation, and it can also obtain another beneficial effect.Each transmitting terminal 2 (taper of each segment of fiber) is separated a little, and this helps the wider distribution of emitting electrons.Figure 4 shows that the section 7 of a fiber 6 after radiation, this transmitting terminal section 7 has height and sharp-pointed uneven place 8.After Figure 5 shows that change, the section 10 of a fiber 9, this transmitting terminal section 10 have height and level and smooth slightly uneven place 11.
The radiation of transmitting terminal (bombardment) step is by caesium or the similarly ion realization of low-work-function material.Each ion is filled the surface of spoke side, therefore reduces the electric work function of transmitting terminal.The same with the ion of surplus air, these radiation effects also can cause the sharp-pointed uneven place of spoke side to occur.
According to the present invention, changing step can implement in the different phase that generates field-transmitting cathode.For example, change step and can work as when each fiber (or each body) is handled in vacuum chamber and carry out, and/or when it is installed in luminescent device or any electron emission device, carry out.
Light source with the field-transmitting cathode that provides with 1 form of restrainting is provided, this bundle 1 is preferably in the parent, and it is installed on the conductive substrate 17.With the same plane of parent in, and on bundle 1 transmitting terminal extremely near the place, about a few tenths of micron has a modulator electrode 12, this electrode 12 has a center bore around every bundle fiber.This substrate 17 and Wehnelt electrode 12 are positioned on the insulated support 18 of the vacuum glass internal tank with upper bound glass plate 15 and lower bound glass plate 16.In the opposite end of fibre bundle 1 and Wehnelt electrode, there are an anode 13 and a fluorescence coating 14 in 15 inside in the upper bound.This anode 13, Wehnelt electrode 12 and substrate 17 have electronics end A, B, the C that is used to apply voltage respectively, and this voltage makes electronics arrive the fluorescence coating 14 that joins with anode 13 through the Wehnelt electrode aperture from restrainting 1.When fluorescence coating 14 is arrived in electronic impact, see through transparent anode 13 and glass container emission light.
Claims (21)
1, a kind of generation method of field-transmitting cathode, this field-transmitting cathode comprise that at least one has the body of first kind of material, the emitting surface that wherein said at least one body has at least one to have at least one uneven part, and described method comprises the steps:
-by being applied variable electric field, described at least one body changes described emitting surface, thus cause electronic field emission and increase described variable electric field from described emitting surface in the mode of described at least one uneven part deterioration of limiting described emitting surface.
2, the method for claim 1, wherein, before described change step, described method further comprises the step that generates described emitting surface, thereby improve its uneven part and be beneficial to electronic field emission, at least one step in the step process following steps of this generation emitting surface:
The mechanical treatment of-described at least one body;
The etching processing of-described at least one body;
The radiation treatment of-described at least one body;
-heat treatment.
3, the method for claim 1, wherein described method further comprises the step that generates described emitting surface with radiation treatment, and this radiation treatment and described change step are carried out simultaneously.
4, method as claimed in claim 2, wherein, described heat treatment is carried out in open air.
5, as one of any described method among the claim 1-4, wherein said variable electric field with predetermined amplitude and the time, is increased to the field intensity of the operating voltage magnitude of described field-transmitting cathode step by step from low field intensity in the step that changes described emitting surface.
6, as claim 2 or 3 described methods, wherein the change and the generation step of being undertaken by radiation treatment carried out in containing the vacuum environment of surplus air together, and described variable electric field intensity causes the ionizing radiation of surplus air to described emitting surface.
7, the method for claim 1, wherein said field-transmitting cathode is to be made of the material that comprises described first kind of material, described method further comprises with the temperature that raises gradually described material step of heat treatment, to obtain a result in following:
-described first kind of the material of removal other material in addition from described material;
-make the internal structure standardization of described material;
-make the surface texture standardization of described material;
8, as claim 2 or 3 described methods, described step with radiation treatment generation emitting surface further comprises the steps:
-with have than described first kind of material more second kind of material of low work function add on the described emitting surface, cause the electron field intensity that electronic field emission is required to reduce from described emitting surface.
9, method as claimed in claim 8, wherein the interpolation step by radiation treatment and generate step and be attached in the step of described emitting surface that radiation has described second kind of corpuscle.
10, the method for claim 1, wherein said at least one body is a segment of fiber, and described emitting surface is the end surfaces of described segment of fiber.
11, method as claimed in claim 10, wherein said each negative electrode are the fibers of a branch of bundle of forming of a plurality of described segment of fiber, and the wherein said step that generates emitting surface with radiation treatment is suitable for making the transmitting terminal of described bundle fiber section to diverge to.
12, a kind of field-transmitting cathode of making as one of any described method among the claim 1-11 that adopts.
13, field-transmitting cathode as claimed in claim 12, wherein said emitting surface comprise second kind of material with work function lower than described first kind of material.
14, as claim 12 or 13 described field-transmitting cathodes, wherein said first kind of material is carbon.
15, as claim 13 or 14 described field-transmitting cathodes, wherein said second kind of material is caesium.
16, a kind of feds comprises that at least one adopts the field-transmitting cathode of making as one of any described method among the claim 1-11, and wherein said feds also comprises:
-with described at least one field-transmitting cathode Wehnelt electrode placed apart;
-anode;
-fluorescence coating;
-one vacuum chamber;
One described field-transmitting cathode, described Wehnelt electrode, described anode and described fluorescence coating in fact all are enclosed in the described vacuum chamber;
Described field-transmitting cathode, described Wehnelt electrode and described anode are connected to first, second and tertiary voltage, and described field-transmitting cathode, described Wehnelt electrode and described anode are placed on certain locus, thereby the electronics of described field-transmitting cathode is transmitted on the described fluorescence coating.
17, feds as claimed in claim 16, wherein
-described vacuum chamber is that light is transparent;
-electronics is launched on the described fluorescence coating, causes described vacuum chamber to external emission light.
18, as claim 16 or 17 described feds, wherein said emitting surface comprises having than described first kind of material second kind of material of low work function more.
19, the method for claim 1 comprises step:
Carry out described change step, be used at least one plane of departure with at least one uneven part is adjusted to radius of curvature in the 0.1-100nm scope.
20, field-transmitting cathode as claimed in claim 12, wherein:
The radius of curvature of described at least one uneven part is in the 0.1-100nm scope.
21, feds as claimed in claim 16, wherein:
The radius of curvature of described at least one uneven part is in the 0.1-100nm scope.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9500554-2 | 1995-02-15 | ||
| SE95005542 | 1995-02-15 | ||
| SE9500554A SE504603C2 (en) | 1995-02-15 | 1995-02-15 | Method of manufacturing a field emission cathode and field emission cathode |
| US08/467,825 US5588893A (en) | 1995-06-06 | 1995-06-06 | Field emission cathode and methods in the production thereof |
| US08/467,825 | 1995-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1174629A CN1174629A (en) | 1998-02-25 |
| CN1097836C true CN1097836C (en) | 2003-01-01 |
Family
ID=26662227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96191941A Expired - Fee Related CN1097836C (en) | 1995-02-15 | 1996-02-15 | Field emission cathode and methods in production thereof |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0809854B1 (en) |
| JP (1) | JP3299544B2 (en) |
| CN (1) | CN1097836C (en) |
| AT (1) | ATE197515T1 (en) |
| AU (1) | AU689702B2 (en) |
| CA (1) | CA2212681C (en) |
| DE (1) | DE69610902T2 (en) |
| ES (1) | ES2152513T3 (en) |
| MX (1) | MX9706141A (en) |
| WO (1) | WO1996025753A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE510412C2 (en) * | 1997-06-13 | 1999-05-25 | Lightlab Ab | A light source comprising a field emission cathode and a field emission cathode for use in a light source |
| SE510413C2 (en) * | 1997-06-13 | 1999-05-25 | Lightlab Ab | A field emission cathode and a light source comprising a field emission cathode |
| US6054801A (en) * | 1998-02-27 | 2000-04-25 | Regents, University Of California | Field emission cathode fabricated from porous carbon foam material |
| JP4131306B2 (en) * | 1998-12-10 | 2008-08-13 | 昭和電工株式会社 | Electron emission material |
| EP1164618B8 (en) * | 1999-03-17 | 2008-11-26 | Panasonic Corporation | Electron-emitting device and image display device using electron-emitting device |
| BR0011479A (en) * | 1999-06-10 | 2002-03-19 | Lightlab Ab | Production method of a field emitting cathode for a light source, field emitting cathode, and, light source |
| JP2001185019A (en) | 1999-12-27 | 2001-07-06 | Hitachi Powdered Metals Co Ltd | Electron emission cathode, electron emission device, and method of manufacturing electron emission device |
| FR2803944B1 (en) * | 2000-01-14 | 2002-06-14 | Thomson Tubes Electroniques | ELECTRON GENERATING CATHODE AND MANUFACTURING METHOD THEREOF |
| JP3636154B2 (en) * | 2002-03-27 | 2005-04-06 | ソニー株式会社 | Cold cathode field emission device and manufacturing method thereof, cold cathode field electron emission display device and manufacturing method thereof |
| JP3907626B2 (en) | 2003-01-28 | 2007-04-18 | キヤノン株式会社 | Manufacturing method of electron source, manufacturing method of image display device, manufacturing method of electron-emitting device, image display device, characteristic adjustment method, and characteristic adjustment method of image display device |
| JP2007265639A (en) * | 2006-03-27 | 2007-10-11 | Osaka Univ | Electron wave interference electron source, its manufacturing method, and element using it |
| RU2598857C2 (en) * | 2014-08-07 | 2016-09-27 | Публичное акционерное общество "Автоэмиссионные технологии" | Small-size autoemissive electron gun |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4272699A (en) * | 1978-03-13 | 1981-06-09 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V | Electron impact ion source with field emission cathode |
| US4728851A (en) * | 1982-01-08 | 1988-03-01 | Ford Motor Company | Field emitter device with gated memory |
-
1996
- 1996-02-15 CN CN96191941A patent/CN1097836C/en not_active Expired - Fee Related
- 1996-02-15 AT AT96903328T patent/ATE197515T1/en not_active IP Right Cessation
- 1996-02-15 ES ES96903328T patent/ES2152513T3/en not_active Expired - Lifetime
- 1996-02-15 WO PCT/SE1996/000209 patent/WO1996025753A1/en active IP Right Grant
- 1996-02-15 DE DE69610902T patent/DE69610902T2/en not_active Expired - Fee Related
- 1996-02-15 CA CA002212681A patent/CA2212681C/en not_active Expired - Lifetime
- 1996-02-15 EP EP96903328A patent/EP0809854B1/en not_active Expired - Lifetime
- 1996-02-15 JP JP52490096A patent/JP3299544B2/en not_active Expired - Fee Related
- 1996-02-15 AU AU47372/96A patent/AU689702B2/en not_active Ceased
-
1997
- 1997-08-12 MX MX9706141A patent/MX9706141A/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4272699A (en) * | 1978-03-13 | 1981-06-09 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V | Electron impact ion source with field emission cathode |
| US4728851A (en) * | 1982-01-08 | 1988-03-01 | Ford Motor Company | Field emitter device with gated memory |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0809854A1 (en) | 1997-12-03 |
| EP0809854B1 (en) | 2000-11-08 |
| ATE197515T1 (en) | 2000-11-11 |
| AU689702B2 (en) | 1998-04-02 |
| DE69610902T2 (en) | 2001-04-19 |
| ES2152513T3 (en) | 2001-02-01 |
| CA2212681C (en) | 2001-12-11 |
| JP3299544B2 (en) | 2002-07-08 |
| WO1996025753A1 (en) | 1996-08-22 |
| CN1174629A (en) | 1998-02-25 |
| CA2212681A1 (en) | 1996-08-22 |
| MX9706141A (en) | 1998-08-30 |
| JPH11500259A (en) | 1999-01-06 |
| AU4737296A (en) | 1996-09-04 |
| DE69610902D1 (en) | 2000-12-14 |
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