CN1209945C - Panel fluorescent source based on nano carbon tube and method for manufacturing same - Google Patents
Panel fluorescent source based on nano carbon tube and method for manufacturing same Download PDFInfo
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- CN1209945C CN1209945C CN 01139810 CN01139810A CN1209945C CN 1209945 C CN1209945 C CN 1209945C CN 01139810 CN01139810 CN 01139810 CN 01139810 A CN01139810 A CN 01139810A CN 1209945 C CN1209945 C CN 1209945C
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- front panel
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Abstract
The present invention relates to a manufacturing method of a panel fluorescent light source, which is based on a carbon nanotube. The method at least comprises the following steps: on a conductive layer of a back panel, in a quartz tube, carrying out direct current arc discharge for manufacturing a carbon nanotube, or in the quartz tube, vaporizing phthalocyanine ferrous, and decomposing the accessed carbonaceous gas by heat for manufacturing a carbon nanotube; carrying out centrifugal purification and ball milling splitting; directionally transplanting the carbon nanotube onto a conductor and taking the carbon nanotube which directionally grows as a cathode; manufacturing a fluorescent powder layer on a front panel; stirring and uniformly mixing the fluorescent powder and sensitising glue and printing the mixture of the fluorescent powder and the sensitising glue by a silk screen process method. A separant is manufactured between the back panel and the front panel so as to support the back panel and the front panel to keep a distance. The function faces of the back panel and the front panel are abutted and assembled. The present invention adopts a vacuum microelectronic technique, and utilizes the brief field refrigeration emission principle of the carbon nanotube to manufacture a field emission panel type fluorescent light source with high resolution, high efficiency, long service life, lower cost, high brightness and brilliant colors.
Description
Technical field
The present invention relates to a kind of fluorescence light source and preparation method thereof, especially a kind of based on ultra-thin plate fluorescence light source of carbon nano-tube electroluminescent and preparation method thereof.
Background technology
In practical light source field, fluorescence light source (VFLS) belongs to the green ecological illumination, and its luminous dependence electron stream encourages and the generation visible light, luminosity height on characteristic spectrum, the visual angle is wide, the light efficiency height, can obtain panchromatic, and operating temperature range is wide, does not contain the infrared spectrum that thermal effect causes, and is luminous by electron beam control, response time is fast, simple in structure, power saving meets environment protection requirement.
VFLS is generally the electric field-activate mercury vapour in the prior art, produces ultraviolet ray excited light-emitting phosphor.
Increase day by day for ultra-thin, the high brightness of fluorescence light source, the requirement of the saving energy at present, the planar light source of main flow is mercurous fluorescence light source at present, and mercury will cause very big pollution to environment, be unfavorable for environmental protection, and cost is higher, damage easily.
Summary of the invention
The object of the present invention is to provide a kind of Carbon Nanotube Flat Plate Fluorogenic Light Source And Preparation Method; but it is low according to this method cost of manufacture, brightness is high, long service life, panel fluorescent source that the fluorescence area is big, satisfies the panel fluorescent source of environmental protection requirement.
The object of the present invention is achieved like this:
It is a kind of that it comprises backplate, fluorescence radiation layer and front panel based on the plate fluorescence light source of carbon nano-tube, the involutory formation fluorescence light source of front panel and backplate body wherein, and the fluorescence radiation layer is arranged between front panel and the backplate.The backplate internal surface layer is provided with the carbon nano-tube as negative electrode, and is provided with electrode leads to client, and the front panel internal surface layer is provided with transparency conductive electrode, fluorescent material, and the fluorescent material of carbon nano-tube on the backplate internal surface layer and front panel internal surface layer constitutes the fluorescence radiation layer.
The front panel internal surface layer is provided with silk screen process, plays the separaant that supports front panel and backplate effect.Separaant is arranged between the carbon nano-tube slit of discharge, and separaant has spacing each other.Separaant is material particularly, is dark glass powder with low melting point material.As required, and be the guarantee precision, separaant can be made as sandwich construction.
Backplate is glass baseplate layer or ceramic base material layer, which is provided with conductive layer, perhaps directly adopts low-resistance conductive glass.Carbon nano-tube is that oriented growth is made on the backplate conductive layer.
Front panel is transparent substrate layer.
The encapsulation reserved opening place, side of front panel and the involutory formation fluorescence light source of backplate body is provided with parallel blast pipe.Be provided with getter in the blast pipe.
A kind of manufacture method based on the carbon nano-tube panel fluorescent source, its method comprises the steps: at least
Manufacture carbon nano-tube on the conductive layer of plate overleaf, and draw as negative electrode;
Manufacture phosphor powder layer on the plate in front; Fluorescent material and photoresists are mixed, adopt the silk screen process method to print up.
Make separaant between plate and the front panel overleaf,, ensure mutual distance so that support backplate and front panel.
With the function of backplate and front panel in the face of setting up dress jointly.
Described carbon nano-tube making step is in particular:
Stamp the exit of silver slurry with the silk-screen method as conductive layer;
Solidify;
Adopt electrophoresis or stencil or thermal decomposition method oriented growth carbon nanometer tube as negative electrode; Direct-current arc discharge preparation carbon nanometer tube in quartz ampoule, or at quartzy in-tube evaporation phthalocyanine iron, the carbonaceous gas that thermal decomposition feeds prepares carbon nano-tube; Centrifugal purification, the ball milling division; The directional implantation carbon nano-tube is to electric conductor.
Described step also comprises: be coated with photoresists on the conductive layer of plate overleaf, will dry by the fire before the photoresists; Utilize ultraviolet ray to carry out photoresists photoresists exposure; Photoresist developing; The photoresist post bake; On conductive layer, erode away bus.
Described separaant making step comprises: utilize silk screen printing that transparent glass powder with low melting point is printed on the front panel; Advance the stove sintering again, can print multilayer as required.
During assembling, glass powder with low melting point is coated in front panel or the backplate periphery is provided with joint filling material, makes and enclose frame, integral body is cured; Front panel and backplate are aimed at, and in the loading fixture, the frame periphery that encloses of plate and backplate involution is reserved exhaust outlet in front, and blast pipe is arranged on exhaust ports, advances the stove sintering; By blast pipe front panel and the involutory inside of backplate are vacuumized.
The blast pipe setting comprise with blast pipe with reserve the side that exhaust outlet communicates and spile, the side that blast pipe is had the aperture reservation exhaust outlet of fitting abreast, aperture is aimed at and is reserved exhaust outlet, and the periphery of blast pipe is coated with glass powder with low melting point, the end sealing that blast pipe is fitted and reserved exhaust outlet.
End drawing-down with blast pipe applying reservation exhaust outlet spiles on thinner body.Utilize laser or ultrasonic wave to carry out the punching of blast pipe.Aperture is more than one, point-blank.
Getter is set in blast pipe, seals the port that blast pipe vacuumizes when being vented to the limit, the getter blast pipe will be housed be placed on and hit work in the high-frequency induction coil, will have under one section envelope of blast pipe of getter.
Described backplate is low-resistance ito glass or plate glass or the ceramic substrate of having made conductive layer.Backplate is made the size that comprises that cutting is suitable; Clean greasy dirt, disintegrating slag.
According to the technique scheme analysis, the present invention adopts vacuum microelectronics technique, utilizes refrigeration emission principle in carbon nano-tube field to make high-resolution, high efficiency, long-life field emission flat type fluorescence light source, and its cost is lower, brightness is high, and bright in luster.
Description of drawings
Fig. 1 is the whole perspective view of the present invention;
Fig. 2 is a decomposing state front and back panel structural representation of the present invention;
Fig. 3 is a separaant planar structure schematic diagram of the present invention;
Fig. 4 is a bus planar structure schematic diagram of the present invention
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done detailed description further.
Referring to Fig. 1-4, the present invention is the plate fluorescence light source of a kind of carbon nano-tube, it comprises backplate 1, fluorescence radiation layer and front panel 2, the involutory formation fluorescence light source of front panel 2 and backplate body wherein, and the fluorescence radiation layer is arranged between front panel 2 and the backplate 1.Backplate 1 internal surface layer is provided with the carbon nano-tube 11 as negative electrode, and be provided with electrode leads to client, front panel 2 internal surface layers are provided with conductive layer 21, fluorescent material 22, and the fluorescent material 22 of carbon nano-tube 11 on backplate 1 internal surface layer and front panel 2 internal surface layers constitutes the fluorescence radiation layer.Particularly, front panel 2 is transparent substrate layer, and backplate 1 is glass baseplate layer or ceramic base material layer, which is provided with conductive layer, perhaps directly adopts low-resistance conductive glass.Carbon nano-tube 11 is for to make along oriented growth on the bus that erodes away on backplate 1 conductive layer.
The encapsulation reserved opening place, side of front panel 2 and backplate 1 involutory formation fluorescence light source body is provided with parallel blast pipe 3, can ensure vacuumizing and ultra-thin requirement of fluorescence light source body like this, and be unlikely to because the volume of blast pipe 3 causes thickening of fluorescence light source body.Be provided with getter 4 in the blast pipe 3, not only can increase the effective area of fluorescence light source body like this, and by using getter further to satisfy the vacuum requirements of fluorescence light source body, the useful life of improving the fluorescence light source body.
For ensureing, in vacuumizing for large-area fluorescence light source body interior, can have certain bearing capacity between front panel 2 and the backplate 1, front panel 2 internal surface layers are provided with and play the separaant 23 that supports front panel 2 and backplate 1 effect.Separaant 23 is adopted as transparent glass powder with low melting point material.Separaant 23 concrete shapes meet carbon nano-tube 11 slits of discharge, therefore are arranged between carbon nano-tube 11 slits of discharge, and separaant 23 has spacing mutually.For ensureing precision, separaant 23 adopts silk screen process to make, and is sandwich construction according to different thickness requirement separaant 23.
During for stable vacuumizing, the whole evenly distance that front panel 2 and backplate 1 are involutory, be provided with glass microballoon in the material 5 of encapsulation around the side of plate 2 and backplate 1 involutory formation fluorescence light source body in front, cause front panel and the involutory inconsistent shortcoming of whole evenly distance of backplate so that overcome joint filling material, ensure the unanimity of pressure.
The concrete manufacture method of the present invention is:
Low-resistance ito glass (perhaps plate glass, ceramic substrate) is cut into appropriate size, clean degreasing and disintegrating slag, stamp the silver slurry as exit 11 with the method for silk screen printing, and curing.With electrophoresis, stencil or thermal decomposition method oriented growth of carbon nanometer tube 12 as negative electrode.
Concrete steps comprise:
1, low-resistance ITO plate glass (perhaps making plate glass, the ceramic substrate of conductive layer) is cut into appropriate size.
2, clean degreasing, disintegrating slag.Glass cleans, and comprising:
1) running water is rinsed well;
2) deionized water rinsing is clean;
3) acetone is ultrasonic;
4) absolute ethyl alcohol is ultrasonic;
5) deionized water is ultrasonic;
6) cold and hot deionized water rinsing is clean;
7) absolute ethyl alcohol dehydration.
3, stamp the silver slurry as exit with the silk-screen method;
4, solidify;
5, use electrophoresis, stencil or thermal decomposition method oriented growth of carbon nanometer tube as negative electrode.Transplant carbon nano-tube method particularly: direct-current arc discharge preparation carbon nano-tube in quartz ampoule, perhaps at quartzy in-tube evaporation phthalein cyanogen iron, the carbonaceous gas that thermal decomposition feeds prepares carbon nano-tube.By centrifugal purification, the ball milling division is transplanted on the electric conductor as negative electrode carbon nano-tube oriented with electrophoresis method more then.
On the basis of the front panel 2 that has conductive layer 21, stamp some transparent low glass powders as separaant 23 with the method for silk-screen, advance the stove sintering, if separaant 23 insufficient heights can repeat silk-screen.Coat fluorescent material 22 then.Low glass powder onboard as the perimeter seal material, is solidified.
Concrete steps are as follows:
1, repeats backplate and make preceding four steps;
2, stamp transparent low glass powder as separaant with the silk-screen method;
3, advance the stove sintering, if insufficient height can repeat the step;
4, coat fluorescent material;
5, low glass powder is coated with onboard as the perimeter seal material;
6, solidify.
Assembling:
Periphery is had front panel 2 and backplate 1 aligning that low glass powder is coated with sealing compound, be contained in the anchor clamps, front panel 2 and backplate 1 periphery enclose frame 4 for coating.Loading onto blast pipe 3, coat low glass powder.Advance the stove sintering, dress getter 4 in blast pipe 3, exhaust.When being vented to the limit, seal.The getter 4 of blast pipe 3 dresses is activated, use duration and degree of heating under unnecessary blast pipe 3 envelopes.
In the above-mentioned steps, the content that each step is concrete is:
Glass cleans, and comprising: running water is rinsed well; Deionized water rinsing is clean; Acetone is ultrasonic; Absolute ethyl alcohol is ultrasonic; Deionized water is ultrasonic; Cold and hot deionized water rinsing is clean; The absolute ethyl alcohol dehydration.
Evaporation comprises: the processing in source: the nickel filament of diameter 0.11mm (Ni 80%Cr 20% purity 99.9%) was invaded bubble 24 hours in acetone, with behind the absolute ethyl alcohol bubble 24 hours, high pure nitrogen dries up again.Vacuum evaporation nickel chromium triangle conductive layer: with after some meters doublings of nickel chromium triangle filament length of handling well tightly on straight tungsten bar.Glass plate to be evaporated is fixed in the evaporator on the runing rest with spring wire.When vacuum degree reaches 0.1Pa, glass heats is toasted.Evaporating temperature is approximately 1600 ℃, and its thickness can be converted by the resistance of probe measurement print and obtain.
Coating low glass powder and fluorescent material: adopt silk screen process method printing low glass powder and photoresists compound, as the separaant of centre.Certainly septum pellucidum ion size is the very little exhaust passage that do not influence.Fluorescent material adopts the silk screen process method to print up.When printing, must stir fluorescent material by mixer.Printing out fluorescent material thickness is determined by the order number of wire mesh membrane.
Frame is enclosed in coating: be coated on front panel as enclosing frame after low glass powder is in harmonious proportion.Enclose frame and be not and totally-enclosedly will reserve the blast pipe installing port, advance stove again and solidify.
Draw blast pipe: in drawing-down on the height of anger, if blast pipe is the right angle, after the drawing-down must bends blast pipe one end, and a thin end closure, beat more than one aperture with laser or ultrasonic wave on tubule again, they all point-blank.Sintering last lower glass plate together and the blast pipe that processes are contained in the mould, these apertures with enclose frame on reserve mouthful aim at, coat low glass powder, advance the stove sintering, the blast pipe burning at platen edge.
Getter: the getter of packing in blast pipe, this getter are to be compressed on the high purity nickel sheet, keep blast pipe position up, connect the exhaust of vacuum unit then.Envelope is sealed from getter as far as possible a little further down when being vented to the limit.Activate getter, with duration and degree of heating down, make the blast pipe length of staying on the screen be not more than about 3 millimeters this section blast pipe envelope that has getter.
Claims (18)
1, a kind of based on the plate fluorescence light source of carbon nano-tube, it comprises backplate, fluorescence radiation layer and front panel, the involutory formation fluorescence light source of front panel and backplate body wherein, the fluorescence radiation layer is arranged between front panel and the backplate, it is characterized in that: described backplate internal surface layer is provided with the carbon nano-tube as negative electrode, and be provided with electrode leads to client, the front panel internal surface layer is provided with transparency conductive electrode, fluorescent material, and the fluorescent material of carbon nano-tube on the backplate internal surface layer and front panel internal surface layer constitutes the fluorescence radiation layer; The front panel internal surface layer is provided with silk screen process, plays the separaant that supports front panel and backplate effect, and separaant is arranged between the carbon nano-tube slit of discharge, and separaant has spacing each other; Separaant is dark glass powder with low melting point material.
2, according to claim 1 based on the plate fluorescence light source of carbon nano-tube, it is characterized in that: backplate is glass baseplate layer or ceramic base material layer, which is provided with conductive layer.
3, according to claim 1 based on the plate fluorescence light source of carbon nano-tube, it is characterized in that: backplate is a low-resistance conductive glass.
4, according to claim 1 or 2 or 3 described based on the plate fluorescence light source of carbon nano-tube, it is characterized in that: carbon nano-tube is that oriented growth is made on the backplate conductive layer.
5, according to claim 1 based on the plate fluorescence light source of carbon nano-tube, it is characterized in that: front panel is transparent substrate layer.
6, according to claim 1 based on the plate fluorescence light source of carbon nano-tube, it is characterized in that: the encapsulation reserved opening place, side of front panel and the involutory formation fluorescence light source of backplate body is provided with parallel blast pipe, is provided with getter in the blast pipe.
7, a kind of manufacture method based on the carbon nano-tube panel fluorescent source, it is characterized in that: described method comprises the steps: at least
1) stamps the silver slurry with the silk-screen method on the plate overleaf, solidify the back, draw the exit of negative electrode as conductive layer; On conductive layer, adopt electrophoresis or stencil or thermal decomposition method oriented growth carbon nanometer tube as negative electrode;
2) utilize silk screen printing that transparent glass powder with low melting point is printed on the front panel; Advance the stove sintering again, make separaant between plate and the front panel overleaf,, ensure mutual distance so that support backplate and front panel.
3) fluorescent material and photoresists are mixed, adopt the silk screen process method in front on the plate printing manufacture phosphor powder layer;
4) with the function of backplate and front panel in the face of setting up dress jointly.
8, the manufacture method based on the carbon nano-tube panel fluorescent source as claimed in claim 7, it is characterized in that: the manufacture method of the carbon nanometer tube in the described step 1) comprises:
1) direct-current arc discharge preparation carbon nanometer tube in quartz ampoule, or at quartzy in-tube evaporation phthalocyanine iron, the carbonaceous gas that thermal decomposition feeds prepares carbon nano-tube;
2) centrifugal purification, the ball milling division;
3) the directional implantation carbon nano-tube is to electric conductor.
9, the manufacture method based on the carbon nano-tube panel fluorescent source as claimed in claim 7, it is characterized in that: described step 1) also comprises: be coated with photoresists on the conductive layer of plate overleaf, will dry by the fire before the photoresists; Utilize ultraviolet ray to carry out photoresists photoresists exposure; Photoresist developing; The photoresist post bake; On conductive layer, erode away bus.
10, the manufacture method based on the carbon nano-tube panel fluorescent source as claimed in claim 7, it is characterized in that: the printing of described separaant can be printed multilayer as required.
11, the manufacture method based on the carbon nano-tube panel fluorescent source as claimed in claim 7, it is characterized in that: described step 4) is in particular: glass powder with low melting point is coated in front panel or the backplate periphery is provided with joint filling material, frame is enclosed in making, and integral body is cured; Front panel and backplate are aimed at, and in the loading fixture, the frame periphery that encloses of plate and backplate involution is reserved exhaust outlet in front, and blast pipe is arranged on exhaust ports, advances the stove sintering; By blast pipe front panel and the involutory inside of backplate are vacuumized.
12, the manufacture method based on the carbon nano-tube panel fluorescent source as claimed in claim 11, it is characterized in that: the blast pipe setting comprises the side is spiled in the above-mentioned steps, the side that blast pipe is had the aperture reservation exhaust outlet of fitting abreast, aperture is aimed at and is reserved exhaust outlet, the periphery of blast pipe is coated with glass powder with low melting point, the end sealing that blast pipe is fitted and reserved exhaust outlet.
13, the manufacture method based on the carbon nano-tube panel fluorescent source as claimed in claim 12 is characterized in that: blast pipe is fitted reserve an end drawing-down of exhaust outlet, spile on thinner body.
14, as claim 12 or 13 described manufacture methods, it is characterized in that: utilize laser or ultrasonic wave to carry out the punching of blast pipe based on the carbon nano-tube panel fluorescent source.
15, the manufacture method based on the carbon nano-tube panel fluorescent source as claimed in claim 13 is characterized in that: aperture is one or more, and more than one aperture point-blank.
16, as claim 11 or 12 described manufacture methods based on the carbon nano-tube panel fluorescent source, it is characterized in that: getter is set in blast pipe, seal the port that blast pipe vacuumizes when being vented to the limit, the blast pipe that getter is housed is placed in the high-frequency induction coil activates, will have under one section envelope of blast pipe of getter.
17, the manufacture method based on the carbon nano-tube panel fluorescent source as claimed in claim 7 is characterized in that: described backplate is low-resistance ito glass or plate glass or the ceramic substrate of having made conductive layer.
18, it is characterized in that as claim 7 or 17 described manufacture methods based on the carbon nano-tube panel fluorescent source: described backplate is made the size that comprises that cutting is suitable; Clean greasy dirt, disintegrating slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01139810 CN1209945C (en) | 2001-11-29 | 2001-11-29 | Panel fluorescent source based on nano carbon tube and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01139810 CN1209945C (en) | 2001-11-29 | 2001-11-29 | Panel fluorescent source based on nano carbon tube and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1423509A CN1423509A (en) | 2003-06-11 |
| CN1209945C true CN1209945C (en) | 2005-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01139810 Expired - Lifetime CN1209945C (en) | 2001-11-29 | 2001-11-29 | Panel fluorescent source based on nano carbon tube and method for manufacturing same |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395172C (en) * | 2004-12-24 | 2008-06-18 | 清华大学 | Negative light control conductive device based on macroscopical long single-wall or double-wall nano tube bundle |
| CN100395173C (en) * | 2004-12-24 | 2008-06-18 | 清华大学 | Light-positive controlling conductive device based on macro long multi-wall carbon nano tube bundle |
| CN101409961B (en) * | 2007-10-10 | 2010-06-16 | 清华大学 | Surface heat light source, preparation method thereof and method for heating object using the same |
| CN101470566B (en) * | 2007-12-27 | 2011-06-08 | 清华大学 | Touch control device |
| CN101458607B (en) * | 2007-12-14 | 2010-12-29 | 清华大学 | Touch screen and display device |
| CN102347180B (en) * | 2010-07-29 | 2015-06-10 | 海洋王照明科技股份有限公司 | CNT (carbon nano tube) cathode material and preparation method thereof |
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- 2001-11-29 CN CN 01139810 patent/CN1209945C/en not_active Expired - Lifetime
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Assignee: Beijing Jingdongfang Semiconductor Co., Ltd. Assignor: BOE Technology Group Co., Ltd. Contract fulfillment period: 2008.10.8 to 2021.11.29 Contract record no.: 2008990001535 Denomination of invention: Panel fluorescent source based on nano carbon tube and method for manufacturing same Granted publication date: 20050706 License type: Exclusive license Record date: 20081225 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.8 TO 2021.11.29; CHANGE OF CONTRACT Name of requester: BEIJING JINGDONGFANG SEMICONDUCTOR CO., LTD. Effective date: 20081225 |
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Granted publication date: 20050706 |