CN104051228A - Field emission light source - Google Patents
Field emission light source Download PDFInfo
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- CN104051228A CN104051228A CN201310082950.9A CN201310082950A CN104051228A CN 104051228 A CN104051228 A CN 104051228A CN 201310082950 A CN201310082950 A CN 201310082950A CN 104051228 A CN104051228 A CN 104051228A
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- light source
- field emission
- cambered surface
- emission light
- slider
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Abstract
The invention discloses a field emission light source. The field emission light source comprises an anode plate, an isolator and a cathode plate. A sealed cavity is formed among the anode plate, the cathode plate and the isolator; the cathode plate is provided with a projection, and the projection is disposed in the sealed cavity and is provided with an annular cambered surface; the annular cambered surface is provided with an annular inner side and an annular outer side which are opposite to each other, and the middle portion, which is disposed between the annular inner side and the annular outer side, of the annular cambered surface protrudes towards the anode plate; the annular cambered surface is provided with an electron emission layer, electron beams are emitted in a mode vertical to the surface of the annular cambered surface, the electron beams can be enabled to bombard the anode plate at a certain dispersing angle, and through controlling the radian of the annular cambered surface, the electron beams can be completely bombarded to all areas of the anode plate, the area of the electron emission layer is reduced, mutual peeling is avoided, the working stability and the luminescence effect of the field emission field emission light source are improved, and the service life is prolonged; and at the same time, the electron beams emitted by the electron emission layer can be superposed, thus the luminescence effect can be enhanced. Besides, the cathode plate is provided with an annular groove, thus the vacuum degree of the sealed cavity is maintained.
Description
Technical field
The present invention relates to light source field, relate in particular to a kind of field emission light source.
Background technology
A kind of green energy conservation lighting source of field emission light source, its principle is to utilize the electron emission layer on negative electrode flat board to launch electron beam, and under the effect of electric field, the luminescent layer on beam bombardment excitation anode flat board and send uniform visible ray.
The electron emission layer of the negative electrode flat board of existing field emission light source, normally adopts fritter film to be coated on substrate with array format.But in emission process on the scene, can only bombard the anode light layer suitable with this fritter film size from the electron beam of this fritter film surface Vertical Launch, thereby lighting area is less, cause not formed dark space by the anode light layer of beam bombardment, being applied to lighting field has limitation.
The electron emission layer of the negative electrode flat board of another field emission light source, adopt large-area film nano material, can make beam bombardment arrive the All Ranges of anode light layer, but because this electron emission layer is that a monoblock form of film exists, when work, outside under highfield effect, the phenomenon that easily appearance is peeled off mutually, and then increase contact resistance, the thermal effect of film increases, and can produce breaking-up phenomenon.In addition can have a strong impact on, stability, illumination effect and the life-span of field emission light source due to " area effect " (emission area and emission current have certain relation, and in the time that area acquires a certain degree, emission current does not increase and linear increase with area).
Again, the electron emission layer of small size is gluing is connected on substrate on good by conductivity conventionally, is unfavorable for like this maintenance of high vacuum, and then affects stability and the life-span of duration of work.
Summary of the invention
Technical problem to be solved by this invention is, a kind of stability and illumination effect, long field emission light source of life-span of improving is provided.
In order to solve the problems of the technologies described above, embodiments of the invention provide a kind of field emission light source, comprise slider and minus plate for luminous positive plate, tubulose;
Described minus plate and described positive plate are arranged in parallel, and are separately fixed at the two ends of described slider, between described positive plate, described minus plate and described slider, form sealed cavity; Described minus plate is provided with the cannelure matching with the end of described slider;
Described minus plate is provided with projection, and described minus plate and described projection are one-body molded, and make by stainless steel; Described projection is arranged in described sealed cavity and has a ring-type cambered surface; Described annular arc mask has relative ring inner side and ring outside, and the mid portion of the described ring-type cambered surface between described ring inner side and described ring outside protrudes towards described positive plate; Described ring-type cambered surface is provided with electron emission layer, for launching the electron beam that makes described positive plate luminous.
Wherein, the vacuum degree of described sealed cavity is 1 × 10
-5pa.
Wherein, described electron emission layer is nano thin-film.
Wherein, described ring-type cambered surface is one, and its annular center is positioned at the axis place of described slider.
Wherein, described ring-type cambered surface is circular, and its arc bus being protruded towards described positive plate by a middle part rotates to form around an axis, and this axis is parallel to the axis of described slider.
Wherein, described arc bus is semi arch or semiellipse arc.
Wherein, described positive plate and described minus plate are circular tabular, and described slider is circular tube shaped.
Wherein, described minus plate is provided with the cannelure matching with the end of described slider.
Wherein, described slider is made up of insulation material.
Wherein, described slider is to be made up of the one in aluminium oxide ceramics, boron nitride and glass.
Wherein, described positive plate and described slider are two, and described minus plate is one, and it is between two described sliders, and between two described positive plates; The both sides of described minus plate are equipped with described projection, in the ring-type cambered surface of described projection, are equipped with described electron emission layer; All there is described cannelure the both sides of described minus plate.
The embodiment of the present invention provides: electron emission layer is arranged in ring-type cambered surface, electron beam goes out perpendicular to the surface emitting of ring-type cambered surface, can make electron beam with certain dispersion angle bombardment positive plate, the radian of controlling ring-type cambered surface can make electron beam bombard the All Ranges of positive plate completely, without electron emission layer is all set on the surface of minus plate, thereby the area of the electron emission layer reducing, avoid mutually peeling off, and then reduced electron emission layer and and minus plate between resistance, improve stability and the illumination effect of field emission light source work, increase the service life, the electron beam sending due to electron emission layer can superpose mutually, can improve illumination effect.By cannelure, be beneficial to the assembling between minus plate and slider, be beneficial to the maintenance of the vacuum degree of sealed cavity simultaneously.Minus plate and described projection are one-body molded, and make by stainless steel, can optimize the service behaviour of field emission light source, and just processing preparation, improves the life-span.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of the field emission light source that provides of the preferred embodiment of the present invention;
Fig. 2 is the profile of the field emission light source of Fig. 1;
Fig. 3 is the structural representation of the field emission light source middle-jiao yang, function of the spleen and stomach pole plate of Fig. 1;
Fig. 4 is the structural representation of slider in the field emission light source of Fig. 1;
Fig. 5 is the structural representation of minus plate in the field emission light source of Fig. 1;
Fig. 6 is the profile of the field emission light source that provides of another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Referring to Fig. 1 and Fig. 2, it is the structural representation of the field emission light source that in the present invention, a kind of embodiment provides.Field emission light source comprises for the slider 2 of luminous positive plate 1, tubulose and minus plate 3.Positive plate 1 is arranged in parallel with minus plate 3, and is separately fixed at the two ends of slider 2, between positive plate 1, minus plate 3 and slider 2, forms sealed cavity 10.
As shown in Figure 3, positive plate 1 comprises the anode substrate 11, conductive layer 12 and the luminescent layer 13 that set gradually.As preferably, anode substrate 11 is circular tabular, is made up of glass material, and its diameter is 110mm, and thickness is 3mm.As other execution mode, anode substrate 11 also can PI(polyimides) substrate, ceramic substrate, PET(Polyethylene terephthalate, poly terephthalic acid class plastics) the high temperature resistant aging-resistant substrate of substrate etc.
In the present embodiment, it is that the plate of 110mm is made anode substrate 11 that glass-cutting thick 3mm is become to diameter, and it is carried out drying after ultrasonic cleaning.Then with the magnetically controlled sputter method conductive layer 12 that thickness is 0.1mm on anode substrate 11 plated surfaces.Conductive layer 12 can be the metal materials such as aluminium, silver, preferential aluminium in the present embodiment.Finally on conductive layer 12, apply luminescent layer 13, in the present embodiment, luminescent layer 13 is phosphor powder layer.Field emission light source when assembling, anode substrate 11 be provided with luminescent layer 13 one facing to minus plate 3.As preferably, luminescent layer 13 matches with slider 2 inner chamber shape of cross sections, is beneficial to the assembling between positive plate 1 and slider 2.
As shown in Figure 4, slider 2 is circular tube shaped, is made up of the insulation such as aluminium oxide ceramics or boron nitride or glass material.In the present embodiment, slider 2 is preferably aluminium oxide ceramics, wherein Al
2o
3content be 94%.The pipe thickness of slider 2 is that 5mm, outer ring diameter are 100mm, and the diameter of luminescent layer 13 is less than or equal to 95mm.Utilize slider 2 to make to there is suitable spacing between positive plate 1 and minus plate 3, thereby make electron beam have enough energy to remove to clash into luminescent layer 13.
As shown in Figure 5, minus plate 3 is circular tabular, and its thickness is 3mm, so as with slider 2 corresponding matching of circular tube shaped.Minus plate 3 is provided with the cannelure 30 matching with the end of slider 2, is beneficial to the assembling between minus plate 3 and slider 2, is beneficial to the maintenance of the vacuum degree of sealed cavity 10 simultaneously.
Minus plate 3 is provided with projection 31.Preferably, minus plate 3 is one-body molded with projection 31, thereby is conducive to the maintenance of high vacuum, optimizes the service behaviour of plane of departure light source device.In the present embodiment, minus plate 3 and projection 31 are made up of stainless steel, so that processing preparation improves the life-span.
Shown in Fig. 2 and Fig. 5, projection 31 is arranged in sealed cavity 10 and has a ring-type cambered surface 310; Ring-type cambered surface 310 has relative ring inner side and ring outside, and the mid portion of the ring-type cambered surface 310 between ring inner side and ring outside protrudes towards positive plate 1.Ring-type cambered surface 310 is provided with electron emission layer 32, for launching the electron beam that makes positive plate 1 luminous.Electron beam goes out perpendicular to the surface emitting of ring-type cambered surface 310, can make electron beam with certain dispersion angle bombardment positive plate 1, the radian of controlling ring-type cambered surface 310 can make electron beam bombard the All Ranges of positive plate 1 completely, without electron emission layer 32 is all set on the surface at minus plate 3, thereby the area of the electron emission layer reducing 32, avoid mutually peeling off, and then reduced electron emission layer 32 and and minus plate 3 between resistance, improve stability and the illumination effect of field emission light source work, and extended useful life.Can mutually superpose because the shape of ring-type cambered surface 310 makes the electron beam that electron emission layer sends, can improve illumination effect simultaneously.
In the present embodiment, ring-type cambered surface 310 is one, and its annular center is positioned at the axis place of slider 2.Utilize minimum electron emission layer 32 numbers can bombard the light-emitting zone of whole anode.As other execution mode, annular cambered surface 320 also can be multiple, is evenly arranged in minus plate 3 according to certain array.
As preferably, ring-type cambered surface 310 is circular, and the arc bus that it is protruded towards positive plate 1 by a middle part rotates to form around an axis, and this axis is parallel to the axis of slider 2, can improve the uniformity of the electron beam that electron emission layer 32 launches, improve luminescent properties.Further, arc bus is semi arch or semiellipse arc, so that processing preparation.In the present embodiment, ring-type cambered surface 310 is directly connected with the surface of minus plate 3, makes the space between ring-type cambered surface 310 and minus plate 3 form projection 31.Certainly, as other execution mode, projection is cylindricality or tubulose, is processed to form ring-type cambered surface 310 at it on the end face of positive plate 1.
Electron emission layer 32 is carbon nano-tube film or other nano thin-films.Conventionally adopt grow described carbon nano-tube film or apply described carbon nano-tube film to obtain electron emission layer 32 in ring-type cambered surface 310 of thermal chemical vapor deposition (CVD) method in ring-type cambered surface 310.
In the present embodiment, it is minus plate 3 that processing zone line has the projection 31 of annular, the corrosion resistant plate that plate thickness is 3mm, the Surface Machining of projection 31 forms ring-type cambered surface 310, the bus of ring-type cambered surface 310 is semiellipse arc, its semi-minor axis is that 3mm, major semiaxis are 4mm, and the internal diameter of ring-type cambered surface 310 is 2mm.Polishing is carried out on the surface of minus plate 3 and ring-type cambered surface 310, and ultrasonic cleaning is also dried, and then growing nano thin-film material in its ring-type cambered surface 310, preferentially selects carbon nano-tube film herein, to obtain electron emission layer 32.
In the present embodiment, as shown in Figure 2, positive plate 1, slider 2 and minus plate 3 are one, minus plate 3 only one side is provided with projection 31 and electron emission layer 32, positive plate 1 and minus plate 3 are individually fixed in the two ends of slider 2, assembling processings of bleeding after sealing-in, making a vacuum degree of the inner formation of field emission light source is 1 × 10
-5the sealed cavity 10 of Pa.Because positive plate 1 is only one, can realize the one side bright dipping of field emission light source.
As shown in Figure 6, in another embodiment of field emission light source of the present invention, positive plate 1 and slider 2 are two, and the structure of positive plate 1 and slider 2 is identical with last embodiment, repeats no more herein.Minus plate 3 is one, and minus plate 3 is between two sliders 2, and between two positive plates 1, assembling forms two sealed cavities 10 afterwards.The both sides of minus plate 3 are equipped with projection 31, in the ring-type cambered surface 310 of projection 31, are equipped with electron emission layer 32.Utilize the electron emission layer 32 in projection 31 to bombard the positive plate 1 of both sides, can realize two-sided luminous effect.In the present embodiment, all there is the cannelure 30 matching with slider 2 both sides of minus plate 3.
In the above-described embodiment, positive plate 1 and minus plate 3 are circular tabular, and slider 2 is circular tube shaped, and ring-type cambered surface 310 is circular, can be beneficial to the corresponding matching between various piece, realizes best illumination effect.As other execution mode, positive plate 1 and minus plate 3 are oval tabular, and slider 2 is oval tubulose, and ring-type cambered surface 310 is oval ring-type; Or positive plate 1 and minus plate 3 are square tabular, slider 2 is square tube type, ring-type cambered surface 310 side's of being ring-types; Etc..
Above execution mode, does not form the restriction to this technical scheme protection range.The amendment done within any spirit at above-mentioned execution mode and principle, be equal to and replace and improvement etc., within all should being included in the protection range of this technical scheme.
Claims (10)
1. a field emission light source, is characterized in that, comprises slider and minus plate for luminous positive plate, tubulose;
Described minus plate and described positive plate are arranged in parallel, and are separately fixed at the two ends of described slider, between described positive plate, described minus plate and described slider, form sealed cavity; Described minus plate is provided with the cannelure matching with the end of described slider;
Described minus plate is provided with projection, and described minus plate and described projection are one-body molded, and make by stainless steel; Described projection is arranged in described sealed cavity and has a ring-type cambered surface; Described annular arc mask has relative ring inner side and ring outside, and the mid portion of the described ring-type cambered surface between described ring inner side and described ring outside protrudes towards described positive plate; Described ring-type cambered surface is provided with electron emission layer, for launching the electron beam that makes described positive plate luminous.
2. field emission light source according to claim 1, is characterized in that, the vacuum degree of described sealed cavity is 1 × 10
-5pa.
3. field emission light source according to claim 2, is characterized in that, described electron emission layer is nano thin-film.
4. field emission light source according to claim 1, is characterized in that, described ring-type cambered surface is one, and its annular center is positioned at the axis place of described slider.
5. field emission light source according to claim 1, is characterized in that, described ring-type cambered surface is circular, and its arc bus being protruded towards described positive plate by a middle part rotates to form around an axis, and this axis is parallel to the axis of described slider.
6. field emission light source according to claim 5, is characterized in that, described arc bus is semi arch or semiellipse arc.
7. field emission light source according to claim 1, is characterized in that, described positive plate and described minus plate are circular tabular, and described slider is circular tube shaped.
8. field emission light source according to claim 1, is characterized in that, described slider is made up of insulation material.
9. field emission light source according to claim 8, is characterized in that, described slider is to be made up of the one in aluminium oxide ceramics, boron nitride and glass.
10. field emission light source according to claim 1, is characterized in that, described positive plate and described slider are two; Described minus plate is one, and it is between two described sliders, and between two described positive plates; The both sides of described minus plate are equipped with described projection, in the ring-type cambered surface of described projection, are equipped with described electron emission layer; All there is described cannelure the both sides of described minus plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082950.9A CN104051228A (en) | 2013-03-15 | 2013-03-15 | Field emission light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082950.9A CN104051228A (en) | 2013-03-15 | 2013-03-15 | Field emission light source |
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| CN104051228A true CN104051228A (en) | 2014-09-17 |
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| CN201310082950.9A Pending CN104051228A (en) | 2013-03-15 | 2013-03-15 | Field emission light source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107210185A (en) * | 2014-12-17 | 2017-09-26 | 光学实验室公司（瑞典） | Field emission light source |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1705070A (en) * | 2004-06-02 | 2005-12-07 | 清华大学 | Double faced field emission display |
| CN1790607A (en) * | 2004-12-15 | 2006-06-21 | 鸿富锦精密工业（深圳）有限公司 | Field emission illuminating light source and its preparing method |
| CN101042971A (en) * | 2006-03-24 | 2007-09-26 | 清华大学 | Field emission double faced displaying light source and method of making same |
| CN101740279A (en) * | 2008-11-21 | 2010-06-16 | 大同股份有限公司 | Field-emissive cathode board and manufacturing method thereof |
-
2013
- 2013-03-15 CN CN201310082950.9A patent/CN104051228A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1705070A (en) * | 2004-06-02 | 2005-12-07 | 清华大学 | Double faced field emission display |
| CN1790607A (en) * | 2004-12-15 | 2006-06-21 | 鸿富锦精密工业（深圳）有限公司 | Field emission illuminating light source and its preparing method |
| CN101042971A (en) * | 2006-03-24 | 2007-09-26 | 清华大学 | Field emission double faced displaying light source and method of making same |
| CN101740279A (en) * | 2008-11-21 | 2010-06-16 | 大同股份有限公司 | Field-emissive cathode board and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107210185A (en) * | 2014-12-17 | 2017-09-26 | 光学实验室公司（瑞典） | Field emission light source |
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Application publication date: 20140917 |