CN102476922A - Production method of printed carbon nanotube - Google Patents
Production method of printed carbon nanotube Download PDFInfo
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- CN102476922A CN102476922A CN2010105661093A CN201010566109A CN102476922A CN 102476922 A CN102476922 A CN 102476922A CN 2010105661093 A CN2010105661093 A CN 2010105661093A CN 201010566109 A CN201010566109 A CN 201010566109A CN 102476922 A CN102476922 A CN 102476922A
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Abstract
The invention relates to a production method of a printed carbon nanotube, comprising the following steps: printing a layer of silver electrode on a glass substrate by using screen printing technology, then printing a layer of carbon nanotube electrode on the layer of silver electrode, and than letting the glass substrate coated by the two layers be subject to high-temperature roasting to form a carbon nanotube emission electrode. According to the invention, the problems that usually a pure printed carbon nanotube processed by high-temperature roasting easily falls off and makes poor contact with a bottom electrode, and the emission sites density and life are influenced are solved, the firmness, emission density and life of the carbon nanotube emission electrode can be improved, and the steps and cost of the production are saved.
Description
Technical field
The present invention relates to a kind of electron display device, particularly a kind of making method of printed carbon nanotube.
Background technology
As field emission source, carbon nanotube has its unique advantage, and for example diameter is little, length-to-diameter ratio is big, and electronic band structure is special, ripple loses and is defined to axially, and quantum effect is obvious, and the emission threshold value is low, emission big, stability is high.Now, both at home and abroad all at active research nano carbon pipe field-emission display spare, there are a lot of units to produce sample.The emission layer carbon nanotube of negative electrode be manufactured with a variety of technologies, the CVD growth is arranged, printing; Electrophoresis etc., in numerous technologies, silk screen print method technology is simple; Low for equipment requirements, economize material and save time, adopted by majority; But the nanotube after the printing is being easy to come off after accompanying burning through high temperature, contacts not firmly with lower conducting dome, influences launching site density and life-span etc.
Summary of the invention
The present invention be directed to present printed carbon nanotube and have the problem of stability, proposed a kind of making method of printed carbon nanotube, both can solve the firmness problem of printing nanotube, also do not influence conductivity and electronic transmission performance.
Technical scheme of the present invention is: a kind of making method of printed carbon nanotube; Printing conductive electrode layer on flat glass substrate at first; Carry out drying treatment, printing emission layer carbon nanotube slurry on flat glass substrate carries out drying treatment then; Again substrate is put into sintering oven and carry out the high temperature sintering processing, at last the emission layer carbon nanotube is carried out the plasma bombardment aftertreatment.
Said drying treatment adopts convection oven, and its temperature is at 100 ℃～150 ℃, 10 minutes～50 minutes time.
Said high temperature is accompanied and is burnt employing air calcination stove, and its temperature curve is 350 ℃～400 ℃ and kept 20 minutes that 450 ℃～580 ℃ kept 5～40 minutes.
Beneficial effect of the present invention is: the making method of printed carbon nanotube of the present invention; Can improve the firmness of carbon nanotube emitting electrode; Improve the emission density and the life-span of carbon nanotube electrode simultaneously; And saved process, time and cost, be simple effective method for making carbon nanotube electrode with method of printing.
Description of drawings
Fig. 1 is the carbon nanotube diode-type emtting cathode synoptic diagram after the silk screen printing;
Fig. 2 is carbon nanotube triode type emtting cathode instance 1 synoptic diagram after the silk screen printing;
Fig. 3 is carbon nanotube triode type emtting cathode instance 1 sectional view after the silk screen printing;
Carbon nanotube triode type emtting cathode instance 2 synoptic diagram after Fig. 4 silk screen printing;
Fig. 5 is carbon nanotube triode type emtting cathode instance 2 sectional views after the silk screen printing.
Embodiment
Usually the making step of printed carbon nanotube electrode is: on glass substrate, make conductive electrode, and the carbon nanotube slurry that printing configures on conductive electrode then, and high temperature is accompanied the burning-off organic matter removal, formation carbon nanotube emtting electrode.The present invention adopts silk-screen printing technique; At first printing one deck silver slurry on glass substrate prints generally speaking and will accompany burning through 100 ℃ ~ 150 ℃ drying treatment and 500 ℃ ~ 600 ℃ high temperature after silver is starched, and silver electrode could be shaped; Adopt and earlier the silver electrode that prints is carried out drying treatment; Do not accompany burning but do not carry out high temperature, through on silver electrode, republishing one deck carbon nanotube slurry, carbon nanotube and silver electrode are carried out high temperature together accompany burning.
Diode-type emtting cathode as shown in Figure 1: at first on flat glass substrate 1, print bottom electrode layer 2 (Ag electrode); Dried 20 ~ 30 minutes for 120 ℃, print emission layer carbon nanotube 3 (CNT) slurry then above that, dried 20 ~ 30 minutes for 120 ℃; Substrate is put into sintering oven carry out the high temperature sintering processing; 530 ℃ ~ 550 ℃ sintering carry out the plasma bombardment aftertreatment to the emission layer carbon nanotube about 30 minutes again, improve emitting performance.
Like Fig. 2, the emtting cathode of triode type shown in 3 instance 1: printing bottom electrode layer 2 (Ag electrode) on flat glass substrate 1 at first, high temperature sintering is passed through in 120 ℃ of oven dry 20 ~ 30 minutes then; 530 ℃ ~ 550 ℃ sintering republished insulation layer 4, high temperature sintering about 30 minutes; 550 ℃ ~ 570 ℃ sintering 30 minutes, secondary printing insulation layer, double sintering; 5,120 ℃ of oven dry of print column silver electrode are 20 ~ 30 minutes on insulation layer, print the emission layer carbon nanotube cathod more above that; 120 ℃ of oven dry 20 ~ 30 minutes, sintering together, 530 ~ 550 ℃ of sintering temperatures; About 30 minutes time, again emission layer carbon nanotube 3 is carried out the plasma bombardment aftertreatment, improve emitting performance.
Like Fig. 4, the emtting cathode of triode type shown in 5 instance 2: print column electrode layer 2 (Ag electrode) on flat glass substrate 1 at first, high temperature sintering is passed through in 120 ℃ of oven dry 20 ~ 30 minutes then; 530 ℃ ~ 550 ℃ sintering republished capable insulation layer 4, high temperature sintering about 30 minutes; 550 ℃ ~ 570 ℃ sintering 30 minutes, secondary printing insulation layer, double sintering; The emission layer carbon nanotube cathod is printed in 5, the 120 ℃ of oven dry of printed silver electrode 20 ~ 30 minutes of being expert on the insulation layer more above that; 120 ℃ of oven dry 20 ~ 30 minutes, sintering together, 530 ~ 550 ℃ of sintering temperatures; About 30 minutes time, again emission layer carbon nanotube 3 is carried out the plasma bombardment aftertreatment, improve emitting performance.
Drying treatment behind printed silver electrode and the carbon nanotube emtting electrode adopts convection oven, and its temperature is at 100 ℃～150 ℃, 10 minutes～50 minutes time; High temperature behind printed silver electrode and the carbon nanotube emtting electrode is accompanied and is burnt employing air calcination stove, and its temperature curve is 350 ℃～400 ℃ and kept 20 minutes that 450 ℃～580 ℃ kept 5～40 minutes.
Claims (3)
1. the making method of a printed carbon nanotube; It is characterized in that at first printing conductive electrode layer on flat glass substrate carries out drying treatment; On flat glass substrate, print emission layer carbon nanotube slurry then; Carry out drying treatment, again substrate is put into sintering oven and carry out the high temperature sintering processing, at last the emission layer carbon nanotube is carried out the plasma bombardment aftertreatment.
2. according to the making method of the said printed carbon nanotube of claim 1, it is characterized in that said drying treatment adopts convection oven, its temperature is at 100 ℃～150 ℃, 10 minutes～50 minutes time.
3. according to the making method of the said printed carbon nanotube of claim 1, it is characterized in that said high temperature is accompanied and burnt employing air calcination stove, its temperature curve is 350 ℃～400 ℃ and kept 20 minutes that 450 ℃～580 ℃ kept 5～40 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105661093A CN102476922A (en) | 2010-11-30 | 2010-11-30 | Production method of printed carbon nanotube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105661093A CN102476922A (en) | 2010-11-30 | 2010-11-30 | Production method of printed carbon nanotube |
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| CN102476922A true CN102476922A (en) | 2012-05-30 |
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| CN2010105661093A Pending CN102476922A (en) | 2010-11-30 | 2010-11-30 | Production method of printed carbon nanotube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258695A (en) * | 2013-04-19 | 2013-08-21 | 中国计量学院 | Carbon nano tube cold cathode structure |
| CN105016627A (en) * | 2015-06-10 | 2015-11-04 | 青岛科技大学 | Carbon nano-tube conductive glass preparation method |
-
2010
- 2010-11-30 CN CN2010105661093A patent/CN102476922A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258695A (en) * | 2013-04-19 | 2013-08-21 | 中国计量学院 | Carbon nano tube cold cathode structure |
| CN105016627A (en) * | 2015-06-10 | 2015-11-04 | 青岛科技大学 | Carbon nano-tube conductive glass preparation method |
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Application publication date: 20120530 |