CN103839762A - Field emission light source - Google Patents

Field emission light source Download PDF

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Publication number
CN103839762A
CN103839762A CN201210483380.XA CN201210483380A CN103839762A CN 103839762 A CN103839762 A CN 103839762A CN 201210483380 A CN201210483380 A CN 201210483380A CN 103839762 A CN103839762 A CN 103839762A
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CN
China
Prior art keywords
layer
cathode
anode
light source
field emission
Prior art date
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Pending
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CN201210483380.XA
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Chinese (zh)
Inventor
周明杰
吴康锋
陈贵堂
王国彪
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Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
Original Assignee
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Application filed by Oceans King Lighting Science and Technology Co Ltd, Shenzhen Oceans King Lighting Engineering Co Ltd filed Critical Oceans King Lighting Science and Technology Co Ltd
Priority to CN201210483380.XA priority Critical patent/CN103839762A/en
Publication of CN103839762A publication Critical patent/CN103839762A/en
Pending legal-status Critical Current

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Abstract

Provided is a field emission light source which comprises an anode layer, a cathode layer, a light emission layer, a cathode substrate and an emitter layer. The cathode substrate is arranged on the cathode layer and is opposite to the light emission layer in arrangement. One surface, which is opposite to the light emission layer in arrangement, of the cathode substrate presents to be a cambered surface. The emitter layer is attached to the surface, which is opposite to the light emission layer in arrangement, of the cathode substrate so that the emitter layer is also the cambered surface rather than a planar surface. Electron beams emitted by the emitter layer can be emitted to the light emission layer from multiple directions due to the fact that the emitter layer is the cambered surface. Therefore, the electron beams provided by the emitter layer of the field emission light source can be evenly distributed in space so that each region on the light emission layer is impacted by electrons, and thus light emission blind spots on the light emission layer are eliminated and light emission of the light emission layer is more uniform.

Description

Field emission light source
Technical field
The present invention relates to lighting technology, particularly relate to a kind of field emission light source.
Background technology
Field emission light source is as a kind of new type light source, have heating less, the advantage such as the little and beam angle of power consumption is large, be widely used in productive life.Field emission light source mainly comprises anode layer and cathode layer, and anode layer is provided with luminescent layer, is provided with electron emitter layer on cathode layer.When applying after a voltage at anode layer and cathode layer two ends, electron emission cognition is launched electron beam to luminescent layer, thereby it is also luminous that it is excited.
Electron emitter is as the electron source of field emission light source, luminous evenly in order to ensure luminescent layer, and electron emitter needs the stable and uniform electron beam of anode layer transmitting.But in traditional field emission light source, cathode layer is generally plane, be also plane thereby make electron emitter layer, therefore the emitted electron beam of electron emitter is not equally distributed in space, but parallel.Therefore, the region that luminescent layer is direct not relative with electron emitter is bombarded without electronics, thereby causes field on the luminescent layer of transmitting illuminant, to produce blind spot, luminescent layer non-uniform light.
Summary of the invention
Based on this, be necessary to provide a kind of field emission light source, wherein, the emitter layer of described field emission light source can provide equally distributed electron beam, thereby makes luminescent layer luminous evenly.
A kind of field emission light source, is characterized in that, comprising:
Anode layer;
Cathode layer, and described anode layer is oppositely arranged and be separated with predeterminable range, between described anode layer and described cathode layer, forms a closed cavity;
Luminescent layer, is attached on described anode layer and is positioned at described closed cavity, and described luminescent layer is subject to electronics bombardment can produce visible ray;
Cathode substrate, is located on described cathode layer and with described luminescent layer and is oppositely arranged, and the one side that described cathode substrate and described luminescent layer are oppositely arranged is cambered surface;
Emitter layer, can be to described luminescent layer electron emission after being ionized, and described emitter layer is attached in the one side that described cathode substrate and described luminescent layer be oppositely arranged, so that described luminous element layer is curved.
In an embodiment, described anode layer comprises anode substrate and anode conductive layer therein, and described anode conductive layer is attached on described anode substrate, and described luminescent layer is attached on described anode conductive layer.
In an embodiment, described cathode layer comprises cathode base and cathode conductive layer therein, and described cathode conductive layer is attached on described cathode base, and described cathode substrate is located on described cathode conductive layer.
In an embodiment, described luminescent layer is formed by the fluorescent material being coated on described anode layer therein.
In an embodiment, described cathode substrate is multiple stainless steel columns therein, and the one side that described stainless steel column and described luminescent layer are oppositely arranged is sphere.
In an embodiment, described cathode substrate is multiple stainless steel columns, and the cross section of described stainless steel column top is annular therein.
In an embodiment, also comprise dielectric layer therein, offer multiple through holes on described dielectric layer, described stainless steel column is arranged in respectively in described through hole.
In an embodiment, described dielectric layer is made up of pottery therein.
In an embodiment, also comprise strutting piece therein, described strutting piece is held between described anode layer and described cathode layer, to fix described anode layer and described cathode layer, and makes described anode layer and the insulation of described cathode layer.
In an embodiment, in described closed cavity, be vacuum therein.
Above-mentioned field emission light source, comprises anode layer, cathode layer, luminescent layer, cathode substrate and emitter layer.Cathode substrate is located on cathode layer and with luminescent layer and is oppositely arranged, and the one side that cathode substrate and luminescent layer are oppositely arranged is cambered surface.And emitter layer is attached in the one side that cathode substrate and luminescent layer be oppositely arranged, therefore emitter layer is also cambered surface on-plane surface.Because emitter layer is cambered surface, the electron beam that emitter layer is sent can be from multiple directions directive luminescent layer.Therefore, the electron beam that the emitter layer of above-mentioned field emission light source provides can be uniformly distributed in space, makes the each region on luminescent layer have electronics bombardment, thereby eliminates the luminous blind spot on luminescent layer, makes luminescent layer luminous more even.
Brief description of the drawings
Fig. 1 is the structural representation of field emission light source in preferred embodiment of the present invention;
Fig. 2 is the structural representation of the cathode substrate of field emission light source shown in Fig. 1;
Fig. 3 is the structural representation of the dielectric layer of field emission light source shown in Fig. 1.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing, provide preferred embodiment of the present invention.But the present invention can realize in many different forms, be not limited to embodiment described herein.On the contrary, providing the object of these embodiment is to make to the understanding of disclosure of the present invention more thoroughly comprehensively.
It should be noted that, when element is called as " being fixed on " another element, it can be directly on another element or also can have an element placed in the middle.When an element is considered to " connection " another element, it can be directly connected to another element or may have centering elements simultaneously.
Unless otherwise defined, all technology that use are herein identical with the implication that belongs to the common understanding of those skilled in the art of the present invention with scientific terminology.The term using in specification of the present invention herein, just in order to describe the object of specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
Refer to Fig. 1 and Fig. 2, the field emission light source 100 in preferred embodiment of the present invention comprises anode layer 110, cathode layer 120, luminescent layer 130, cathode substrate 140 and emitter layer 150.Wherein, anode layer 110 is oppositely arranged with cathode layer 120, and luminescent layer 130 is attached on anode layer 110 and between anode layer 110 and cathode layer 120.Cathode substrate 140 is located on cathode layer 120, and relative with luminescent layer 130, and emitter layer 150 is attached to cathode substrate 140 one side relative with luminescent layer 130.
Anode layer 110 changes according to the shape of field emission light source 100, and it can be rounded, rectangle etc.Anode layer 110 comprises anode substrate 111 and anode conductive layer 113.Anode conductive layer 113 is attached on anode substrate 111.In the present embodiment, the glass plate that anode substrate 111 is made for glass, the metal conductive film of anode conductive layer 113 for forming on above-mentioned glass plate by magnetron sputtering method.Preferably, above-mentioned metal conductive film is aluminium film, and aluminium film has advantages of that density is little, quality is light, conductivity is high.It is pointed out that in other embodiments, anode substrate 111 also can be by pottery, PET(PETG) etc. material make, and above-mentioned metal conductive film is not limited to aluminium film, also can be copper film, silverskin or ITO(indium tin oxide) film etc.
The form fit of the shape of cathode layer 120 and anode layer 110, can be the shape such as circle, rectangle.Cathode layer 120 is oppositely arranged with anode layer 110.In order to ensure that electronics that emitter layer 150 sends when the bombardment luminescent layer 130, has larger speed.Therefore between, between cathode layer 120 and anode layer 110, be separated with predeterminable range, the acceleration distance as electronics in electric field.Between anode layer 110 and cathode layer 120, form a closed cavity (figure is mark not), luminescent layer 130 and emitter layer 150 are all positioned at closed cavity.In the present embodiment, in closed cavity, be vacuum.Therefore, can prevent that luminescent layer 130 and emitter layer 150 are contaminated, thereby improve the quality of field emission light source 100.
Cathode layer 120 comprises cathode base 121 and cathode conductive layer 123.Cathode conductive layer 123 is attached on cathode base 121, and cathode conductive layer 123 is between cathode base 121 and anode layer 110.In the present embodiment, the glass plate that cathode base 121 is made for glass, the metal conductive film of cathode conductive layer 123 for forming on above-mentioned glass plate by magnetron sputtering method.Preferably, above-mentioned metal conductive film is aluminium film, and aluminium film has advantages of that density is little, quality is light, conductivity is high.It is pointed out that in other embodiments, cathode base 121 also can be by pottery, PET(PETG) etc. material make, and above-mentioned metal conductive film is not limited to aluminium film, also can be copper film, silverskin or ITO(indium tin oxide) film.
Luminescent layer 130 is attached on anode layer 110 and is positioned at closed cavity.Specifically in the present embodiment, luminescent layer 130 is attached on anode conductive layer 113.Luminescent layer 130 is subject to electronics bombardment can produce visible ray.In the present embodiment, luminescent layer 130 is formed by the fluorescent material being coated on anode layer 110.Fluorescent material can be at least one in blue colour fluorescent powder, green emitting phosphor and red fluorescence powder.After three kinds of monochromatic fluorescent material mix according to special ratios, can obtain three primary colors fluorescent powder, three primary colors fluorescent powder can produce white light in the time that electronics bombards.It is pointed out that in other embodiments, luminescent layer 125 also can be made up of fluorescent glass or light-emitting film.
Cathode substrate 140 is located on cathode layer 120, and cathode substrate 140 is oppositely arranged with luminescent layer 130.Specifically in the present embodiment, cathode substrate 140 is located on cathode conductive layer 123.Cathode substrate 140 is cambered surface with the one side that luminescent layer 130 is oppositely arranged.In addition, cathode substrate 140 is made up of conductor material, thereby can be electrically connected with cathode conductive layer 123.Therefore,, in the time connecing positive voltage and make cathode layer 120 ground connection on anode layer 110, between cathode substrate 140 and anode layer 110, there is electric field.And the one side being oppositely arranged due to cathode substrate 140 and luminescent layer 130 is cambered surface.Therefore, the electric field between cathode substrate 140 and anode layer 110 is non-parallel distribution, and the meeting of electric field level changes at diverse location.
Emitter layer 150 is generally made up of the lower material of ionization energy, and therefore, emitter layer 150 is easily ionized in electric field.Can be to luminescent layer 130 electron emissions after emitter layer 150 is ionized, thus the fluorescent material on luminescent layer 130 is excited, and then realize luminous.In the present embodiment, emitter layer 150 is carbon nanocapsule thin film, can in cathode substrate 140, generate by thermal chemical vapor deposition method.It is pointed out that in other embodiments, emitter layer 150 also can be carbon nano-tube, diamond thin and oxide-based nanomaterial, as cupric oxide nano line, zinc oxide nanowire, iron oxide nano-wire etc.
Emitter layer 150 is attached in the one side that cathode substrate 140 and luminescent layer 130 be oppositely arranged.The one side being oppositely arranged due to cathode substrate 140 and luminescent layer 130 is cambered surface, therefore also cambered surface of emitter layer 150.In the time that emitter layer 150 is excited, electrons from the surface ionization of emitter layer 150 out.Because emitter layer 150 is cambered surface, therefore electronics will spread from multiple directions.In addition, because the electric field between cathode substrate 140 and anode layer 110 is non-parallel distribution and the big or small inhomogeneous field with change in location.Therefore, the electronics going out from emitter layer 150 surface ionizations can be certain angle of scattering to luminescent layer 130 scatterings under the effect of this electric field, thereby makes the regional of luminescent layer 130 all have electronics bombardment.
In the present embodiment, cathode substrate 140 is multiple stainless steel columns, and the one side that stainless steel column and luminescent layer 130 are oppositely arranged is sphere.Stainless steel column hardness is high, good toughness, thereby can effectively ensure the stability of cathode substrate 140.In another embodiment, the cross section of stainless steel column top is annular.Therefore, for spherical surface, the relative surface area of stainless steel column, thus increase the surface area that is attached to emitter layer 150 in cathode substrate 140, to increase the distribution of emitter layer 150.In addition, because the cross section of stainless steel column top is annular, thereby can make the radian on emitter layer attached to it 150 surfaces increase, thereby make the range of scatter angles of the electronics ionizing out from emitter layer 150 larger, more easily cover whole luminescent layer 130.
It is pointed out that in other embodiments, cathode substrate 140 is not limited to stainless steel column, also can be the structure that the conductor materials such as copper post, iron prop are made.And the one side that stainless steel column and described luminescent layer are oppositely arranged can be not limited to spherical, any curved surfaces of distinguishing mutually with plane all can be realized major function of the present invention.
Refer to Fig. 1 and Fig. 3, the field emission light source 100 in preferred embodiment of the present invention comprises and also comprises dielectric layer 160 and strutting piece 170.
Dielectric layer 160 has insulating material to make, and for cathode conductive layer 123 and anode conductive layer 113 are separated, prevents from forming between cathode conductive layer 123 and anode conductive layer 113 electric field of parallel distribution.On dielectric layer 160, offer multiple through holes 161.Dielectric layer 160 is sheathed on stainless steel column, and multiple stainless steel column is arranged in respectively in through hole 161.In the present embodiment, dielectric layer 160 is made up of pottery.Be appreciated that in other embodiments, dielectric layer 160 also can be made up of other insulating material such as glass, resin.
Strutting piece 170 is made up of insulating material.Strutting piece 170 can be the shape such as rectangle frame, annulus, to match with the shape of anode layer 110 and cathode layer 120.Strutting piece 170 is held between anode layer 110 and cathode layer 120, and fixed anode layer 110 and cathode layer 120 are fixed together.Because strutting piece 170 is made up of insulating material, therefore can make anode layer 110 and cathode layer 120 insulate, prevent from can not between emitter layer 150 and luminescent layer 130, forming electric field because of both electrical connections.
Field emission light source 100 comprises anode layer 110, cathode layer 120, luminescent layer 130, cathode substrate 140 and emitter layer 150.Cathode substrate 140 is located on cathode layer 120 and with luminescent layer 130 and is oppositely arranged, and cathode substrate 140 is cambered surface with the one side that luminescent layer 130 is oppositely arranged.And emitter layer 150 is attached in the one side that cathode substrate 140 and luminescent layer 130 be oppositely arranged, therefore emitter layer 150 is also cambered surface on-plane surface.Because emitter layer 150 is cambered surface, the electron beam that emitter layer 150 is sent can be from multiple directions directive luminescent layer 130.Therefore, the electron beam that the emitter layer 150 of field emission light source 100 provides can be uniformly distributed in space, and the each region on luminescent layer 130 is bombarded by electronics, thereby eliminates the luminous blind spot on luminescent layer 130, makes luminescent layer 130 luminous more even.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a field emission light source, is characterized in that, comprising:
Anode layer;
Cathode layer, and described anode layer is oppositely arranged and be separated with predeterminable range, between described anode layer and described cathode layer, forms a closed cavity;
Luminescent layer, is attached on described anode layer and is positioned at described closed cavity, and described luminescent layer is subject to electronics bombardment can produce visible ray;
Cathode substrate, is located on described cathode layer and with described luminescent layer and is oppositely arranged, and the one side that described cathode substrate and described luminescent layer are oppositely arranged is cambered surface;
Emitter layer, can be to described luminescent layer electron emission after being ionized, and described luminous element layer is attached in the one side that described cathode substrate and described luminescent layer be oppositely arranged, so that described luminous element layer is curved.
2. field emission light source according to claim 1, is characterized in that, described anode layer comprises anode substrate and anode conductive layer, and described anode conductive layer is attached on described anode substrate, and described luminescent layer is attached on described anode conductive layer.
3. field emission light source according to claim 1, is characterized in that, described cathode layer comprises cathode base and cathode conductive layer, and described cathode conductive layer is attached on described cathode base, and described cathode substrate is located on described cathode conductive layer.
4. field emission light source according to claim 1, is characterized in that, described luminescent layer is formed by the fluorescent material being coated on described anode layer.
5. field emission light source according to claim 1, is characterized in that, described cathode substrate is multiple stainless steel columns, and the one side that described stainless steel column and described luminescent layer are oppositely arranged is sphere.
6. field emission light source according to claim 1, is characterized in that, described cathode substrate is multiple stainless steel columns, and the cross section of described stainless steel column top is annular.
7. field emission light source according to claim 5, is characterized in that, also comprises dielectric layer, offers multiple through holes on described dielectric layer, and described stainless steel column is arranged in respectively in described through hole.
8. field emission light source according to claim 7, is characterized in that, described dielectric layer is made up of pottery.
9. field emission light source according to claim 1, it is characterized in that, also comprise strutting piece, described strutting piece is held between described anode layer and described cathode layer, to fix described anode layer and described cathode layer, and make described anode layer and the insulation of described cathode layer.
10. field emission light source according to claim 1, is characterized in that, in described closed cavity, is vacuum.
CN201210483380.XA 2012-11-23 2012-11-23 Field emission light source Pending CN103839762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210483380.XA CN103839762A (en) 2012-11-23 2012-11-23 Field emission light source

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Application Number Priority Date Filing Date Title
CN201210483380.XA CN103839762A (en) 2012-11-23 2012-11-23 Field emission light source

Publications (1)

Publication Number Publication Date
CN103839762A true CN103839762A (en) 2014-06-04

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Country Status (1)

Country Link
CN (1) CN103839762A (en)

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Application publication date: 20140604