CN1626613A - Method for preparing phosphor pulp in use for display tube - Google Patents
Method for preparing phosphor pulp in use for display tube Download PDFInfo
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- CN1626613A CN1626613A CN 200310109314 CN200310109314A CN1626613A CN 1626613 A CN1626613 A CN 1626613A CN 200310109314 CN200310109314 CN 200310109314 CN 200310109314 A CN200310109314 A CN 200310109314A CN 1626613 A CN1626613 A CN 1626613A
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- fluorescent powder
- fluorescent
- slurry
- sensitizer
- polyvinyl alcohol
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- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
A fluorescent powder slurry for CRT is prepared through mixing fluorescent powder with less water and polyvinyl alcohol, stirring, laying aside for 8-12 hrs, adding purified water, polyvinyl alcohol and photosensitiser, and stirring. Its advantaegs are high dispersity of fluorescent powder, thin and compact fluorescent film.
Description
Technical field
The present invention relates to picture tube, the compound method of the fluorescent powder paste material that particularly a kind of picture tube is used.
Background technology
At present when using existing fluorescent material to prepare slurry, apply slurry in order to make fluorescent material with well applied performance, must in slurry, add the two or more tensio-active agents of dispersion and froth breaking effect that play respectively as additive, to improve the dispersing property of fluorescent powder grain in slurry, eliminate a large amount of bubbles end that produces in the slurry process for preparation, make whole paste system when applying, reach optimization, and then obtain the fine fluorescent screen.
But, in slurry, add various tensio-active agents, the complicacy and the difficulty that have not only increased the slurry preparation and adjusted, and increased production cost.
Summary of the invention
Task of the present invention provides the compound method of a kind of improved picture tube with fluorescent powder paste material, and it has solved existing slurry had not only increased slurry preparation and the complicacy of adjusting and difficulty, but also increased the problem of production cost when adding various tensio-active agent.
Technical scheme of the present invention is as follows;
A kind of picture tube compound method of fluorescent powder paste material, at first fluorescent material and less water and polyvinyl alcohol are mixed, stir, be mixed with mashed prod, treat that this mashed prod leaves standstill 8～12 hours after, each fluorescent powder grain is all soaked into fully by water, become pre-mixing liquor, then this pre-mixing liquor and pure water, polyvinyl alcohol and sensitizer are hybridly prepared into and are coated with screen and use slurry, need not add other tensio-active agent in this slurry, after stirring, be used to be coated with screen.
Adopt method preparation fluorescent powder paste material of the present invention, fluorescent powder grain has good dispersing characteristic, and improved the coating property of fluorescent powder paste material, the fluorescent screen that applies is thinner, the rete densification, the border neat excellence of fluorescent screen figure can satisfy high definition television and be coated with the screen requirement with colored picture tube.
Method of the present invention has adopted high-quality fluorescent material, this kind fluorescent material has good dispersiveness in slurry, under specific compound method, can guarantee coacervation can not occur in the slurry and in the coating procedure of slurry, guaranteed the homogeneity that fluorescent screen is membranous thus.Simultaneously because the narrow particle size distribution of fluorescent powder grain, the basic globulate of particle shape, this has just guaranteed to be coated with the compactness of screen back rete.Therefore, phosphor film layer is thin as far as possible, is about the thickness of four layers of fluorescent powder grain, by exposure with develop, can obtain rete densification, size is moderate, the border neat is good phosphor strip.
Adopt above-mentioned fluorescent material of the present invention and corresponding slurry compound method, simplified primary slurry process for preparation and material, reduced production cost, obtained the fluorescent screen of good quality simultaneously.
Embodiment
The present invention is the compound method of a kind of picture tube with fluorescent powder paste material, at first fluorescent material and a small amount of pure water and polyvinyl alcohol are mixed, stir, be mixed with mashed prod, treat that this mashed prod leaves standstill 8～12 hours after, each fluorescent powder grain is all soaked into fully by water, become pre-mixing liquor, then this pre-mixing liquor and pure water, polyvinyl alcohol and sensitizer are hybridly prepared into and are coated with screen and use slurry, need not add other tensio-active agent in this slurry, after stirring, be used to be coated with screen.
The slurry component is: a kind of fluorescent material content in three kinds of fluorescent material of RGB is 30%～40%, and polyvinyl alcohol content is 15%～30%, and sensitizer content is 1%～3%, and all the other are pure water.Sensitizer material in the slurry can be an ammonium dichromate, also can be sodium dichromate 99.Sensitizer solution concentration is 7%～12%, and optimum concn is 9%.
With preparation green emitting phosphor slurry is example:
Preparation green emitting phosphor pre-mixing liquor needs green emitting phosphor 50% earlier, polyvinyl alcohol 0.5% (concentration 8%), and all the other are pure water.Component is: pre-mixing liquor 63%, and polyvinyl alcohol 22% (concentration 8%), sensitizer 1.2% (concentration 9%), all the other are pure water.
With preparation blue colour fluorescent powder slurry is example:
Preparation blue colour fluorescent powder pre-mixing liquor needs blue colour fluorescent powder 50% earlier, polyvinyl alcohol 0.5% (concentration 8%), and all the other are pure water.Component is: pre-mixing liquor 64%, and polyvinyl alcohol 18% (concentration 8%), sensitizer 1.4% (concentration 9%), all the other are pure water.
With preparation red fluorescence powder slurry is example:
Preparation red fluorescence powder pre-mixing liquor needs red fluorescence powder 50% earlier, polyvinyl alcohol 0.5% (concentration 8%), and all the other are pure water.Component is: pre-mixing liquor 51%, and polyvinyl alcohol 16% (concentration 8%), sensitizer 0.7% (concentration 9%), all the other are pure water.
Fluorescent material in the slurry has that not contain any type of residual solubility promoter, fluorescent powder grain good dispersity, the fluorescent powder grain shape in slurry be characteristics such as sphere, fluorescent powder grain degree narrowly distributing substantially.It is fixed that the median particle diameter of fluorescent powder grain comes according to the concrete size of desired phosphor strip, generally between 3 microns～8 microns.
Claims (4)
1. a picture tube is with the compound method of fluorescent powder paste material, it is characterized in that, at first fluorescent material and less water and polyvinyl alcohol are mixed, stir, be mixed with mashed prod, after treating that this mashed prod leaves standstill 8～12 hours, each fluorescent powder grain is all soaked into fully by water, become pre-mixing liquor, this pre-mixing liquor and pure water, polyvinyl alcohol and sensitizer are hybridly prepared into are coated with the screen slurry then, need not add other tensio-active agent in this slurry, after stirring, be used to be coated with screen.
2. the picture tube according to claim 1 compound method of fluorescent powder paste material, it is characterized in that, described slurry component is: a kind of fluorescent material content in three kinds of fluorescent material of RGB is 30%～40%, polyvinyl alcohol content is 15%～30%, sensitizer content is 1%～3%, and all the other are pure water.
3. picture tube according to claim 1 is characterized in that with the compound method of fluorescent powder paste material described sensitizer material is an ammonium dichromate, and sensitizer solution concentration is 7%～12%.
4. picture tube according to claim 1 is characterized in that with the compound method of fluorescent powder paste material described sensitizer material is a sodium dichromate 99, and sensitizer solution concentration is 7%～12%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109314 CN1626613A (en) | 2003-12-12 | 2003-12-12 | Method for preparing phosphor pulp in use for display tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109314 CN1626613A (en) | 2003-12-12 | 2003-12-12 | Method for preparing phosphor pulp in use for display tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1626613A true CN1626613A (en) | 2005-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310109314 Pending CN1626613A (en) | 2003-12-12 | 2003-12-12 | Method for preparing phosphor pulp in use for display tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN1626613A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368505C (en) * | 2005-10-13 | 2008-02-13 | 四川世纪双虹显示器件有限公司 | Fluorescent powder slurry for plasma display |
| CN101435762B (en) * | 2008-12-09 | 2012-08-22 | 彩虹集团电子股份有限公司 | Method for testing dispersed characteristic of fluorescent powder insoluble to water |
| CN103484100A (en) * | 2013-09-29 | 2014-01-01 | 安徽华东光电技术研究所 | Multicolor fluorescent powder for high brightness display and preparation method |
| CN103642498A (en) * | 2013-11-19 | 2014-03-19 | 四川虹欧显示器件有限公司 | Red fluorescent powder slurry used for plasma panels and preparation method and applications thereof |
-
2003
- 2003-12-12 CN CN 200310109314 patent/CN1626613A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368505C (en) * | 2005-10-13 | 2008-02-13 | 四川世纪双虹显示器件有限公司 | Fluorescent powder slurry for plasma display |
| CN101435762B (en) * | 2008-12-09 | 2012-08-22 | 彩虹集团电子股份有限公司 | Method for testing dispersed characteristic of fluorescent powder insoluble to water |
| CN103484100A (en) * | 2013-09-29 | 2014-01-01 | 安徽华东光电技术研究所 | Multicolor fluorescent powder for high brightness display and preparation method |
| CN103642498A (en) * | 2013-11-19 | 2014-03-19 | 四川虹欧显示器件有限公司 | Red fluorescent powder slurry used for plasma panels and preparation method and applications thereof |
| CN103642498B (en) * | 2013-11-19 | 2015-05-27 | 四川虹欧显示器件有限公司 | Red fluorescent powder slurry used for plasma panels and preparation method and applications thereof |
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