CN1228463A - Method for producing phosphor material - Google Patents
Method for producing phosphor material Download PDFInfo
- Publication number
- CN1228463A CN1228463A CN98127153A CN98127153A CN1228463A CN 1228463 A CN1228463 A CN 1228463A CN 98127153 A CN98127153 A CN 98127153A CN 98127153 A CN98127153 A CN 98127153A CN 1228463 A CN1228463 A CN 1228463A
- Authority
- CN
- China
- Prior art keywords
- pigment
- phosphor material
- fluorescent material
- phosphor
- binding agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/54—Screens on or from which an image or pattern is formed, picked-up, converted, or stored; Luminescent coatings on vessels
- H01J1/62—Luminescent screens; Selection of materials for luminescent coatings on vessels
- H01J1/63—Luminescent screens; Selection of materials for luminescent coatings on vessels characterised by the luminescent material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Luminescent Compositions (AREA)
Abstract
A method of producing phosphor material is provided, and the method includes the steps of mixing a bare phosphor material and water, and adding a binder to the mixture of the bare phosphor material and water to produce a binder-adhered phosphor solution, and adding a first surfactant to the binder-adhered phosphor solution. Then a pigment-dispersed solution including a second surfactant and a pigment is added to the binder-adhered phosphor solution to produce a pigment-coated phosphor; and the final pigment-coated phosphor is washed and dried.
Description
The present invention relates to produce the method for the fluorescent material that is used to make the cathode ray tube (CRT) phosphor powder layer, relate in particular to the method that scribbles the pigmented phosphor material of producing high brightness and good color purity.
Radiation visible rays when phosphor material powder receives electron beam or ultraviolet ray.The phosphor material powder that is used in cathode tube comprises the substrate material that absorbs electron beam or ultraviolet energy and the activator of radiation visible rays when from the substrate material received energy.As substrate material, use oxide compound, sulfide, selenide and fluorochemical and silicate, phosphoric acid salt, arsenate and the tungstate of calcium, barium, beryllium, magnesium, zinc and cadmium usually.As activator, use manganese, magnesium, copper, bismuth, antimony, lead, titanium and various rare earth element usually.
Go out phosphor material powder by mixed-matrix material and activator and to its baked for producing.The material of roasting is washed and ball milling then, and the material that pigment is coated in ball milling is with the colour purity that increases material with to the adhesive power of CRT screen board.Pigment reduces the light of undesirable wavelength, and by being absorbed in that screen board shows reflected outside light and the contrast gradient that improved reproduced image widely.The material that scribbles pigment is through washing, dry and filter to produce final phosphor material powder.In Japanese laid-open patent 50-56416, the composition that comprises pigment and Sudan Gum-arabic is added in the phosphor material powder that scribbles gelatin, purpose is that pigment is coated on the phosphor material powder that scribbles gelatin, and owing to electrostatic force, the positive charge of gelatin just attracts the negative charge on the Sudan Gum-arabic thus.Then by adding stiffening agent, the phosphor material powder that scribbles pigment is carried out thermal-setting or carry out cold setting when being lower than 5 ℃ in 20 hours at 110 ℃.
But in ordinary method, pigment may come off or separates from phosphor material powder, has just destroyed colour purity thus.In addition, during pigment and Sudan Gum-arabic mixed processes, pigment may be assembled, and pigment just can not be coated on the phosphor material powder equably like this, and the brightness of phosphor material powder will descend.When phosphor material powder is used among the CRT of high resolving power and high-contrast, this shortcoming will cause more serious problem.
The object of the invention provides the method for producing fluorescent material, and it can prevent that pigment from coming off from naked phosphor material powder, produces the phosphor material powder of high colour purity thus.
Another purpose of the present invention provides the method for producing fluorescent material, and it can prevent that pigment is assembled when pigment being adhered on the naked phosphor material powder, can equably pigment be coated on the naked phosphor material powder thus, and increase the brightness of phosphor material powder.
To achieve these goals, the method of production fluorescent material of the present invention comprises the following steps: naked phosphor material powder and water are mixed, binding agent is added to produces the fluorescence liquid that adheres to binding agent in the mixture of naked phosphor material powder and water, the first surface promoting agent is added in the fluorescence liquid that adheres to binding agent.The pigment dispersion soln that will comprise second surface promoting agent and pigment then is added in the fluorescence liquid that adheres to binding agent produces the fluorescent material that scribbles pigment, and the fluorescent material that finally scribbles pigment is washed and drying.Preferably first and second tensio-active agents are independently selected from the group that following material constitutes: dinaphthylene-disulfonic acid yellow soda ash (dinaphthylen-disulfonic acidic soda), vinylformic acid emulsion (acrylic emulsion) and Sudan Gum-arabic (gum arabic).
For understanding the present invention better, with reference now to following open and claims detailed description.
In the method for phosphor material powder produced according to the invention, naked phosphor material powder (original phosphor material powder) and water mix, and binding agent are added in the mixture of naked phosphor material powder and water to produce the fluorescence liquid that adheres to binding agent.Nearly all conventional fluorescent material can both be used as naked phosphor material powder of the present invention, and preferred example comprises Y
2O
2S:Eu, Y
2O
3: Eu, ZnS:AgCl, ZnS:Cu, Au, Al, Zn
3(PO
4)
2: Mn and based on comprising such as Y
2O
2S, La
2O
2S and GdO
2The S substrate material reaches such as Eu, Tb, Sm, the rare earth elements of the phosphor material powder of Ce and Pr activator.The binding agent example comprises gelatin (gelatin), polymethylmethacrylate (polymethylmethacrylate), casein (casein), potassium silicate (potassium silicate), zinc hydroxide and trimagnesium phosphate.After tackiness agent was added to fluorescent material, the pH value of using acid such as acetate regulate to adhere to the fluorescence liquid of binding agent was preferably and is lower than 4.0, made the absorbent binder agent equably in its surface of naked phosphor material powder.Then, the naked phosphor material powder by per 100 parts of weight adds the tensio-active agent of 0.2～0.8 part of weight to improve surface adhesion and to disperse binding agent equably.
Simultaneously, join in the pigment by the tensio-active agent of pigment 0.02-0.08 part weight of per 100 parts of weight, this pigment in water ball milling more than 48 hours to produce pigment dispersive solution.Nearly all conventional pigment can both be used for the present invention, and preferred example comprises α-Fe
2O
3And CoOnAl
2O
3
Pigment dispersive solution is added in the fluorescence liquid that adheres to binding agent, stir then.The fluorescent material of producing that scribbles pigment washes with water, and dry more than 24 hours in the time of 100～120 ℃.Among the present invention, when the amount of tensio-active agent was outside above-mentioned scope, pigment may come off and assembles from phosphor material powder.The preferred example of tensio-active agent comprises dinaphthylene disulfonic acid yellow soda ash, vinylformic acid emulsion and Sudan Gum-arabic, and the sodium salt of various polymeric carboxylics can be used as tensio-active agent.
For the preferred embodiments of the present invention more fully are described, provide following specific example.
Example 1
Y
2O
2S:Eu and water mix, and stir when adding gelatin.PH value with the acetate regulator solution is 3.4.Then, by every 100g Y
2O
2S:Eu adds 0.6g dinaphthylene disulfonic acid yellow soda ash in the fluorescent material that adheres to gelatin.Be preparation pigment dispersive solution, the dinaphthylene disulfonic acid yellow soda ash of 0.04g and 100g pigment (α-Fe
2O
3) mix, and the solution 48 hours of blunging is to disperse pigment.
Pigment dispersive solution is added in the fluorescent material that adheres to gelatin, makes the pigment of 0.2g be added to the Y of 100g
2O
2S:Eu.Regulate the pH of mixed value and be lower than 4.0.The fluorescent material that adheres to pigment washes with water, anhydrates, and scribbles the fluorescent material 25 hours of pigment 110 ℃ of following dryings.
Example 2
ZnS:Ag, Cl and water mix, and stir simultaneously adding gelatin.With acetate regulator solution pH value is 4.0.By every 100g ZnS:Ag, Cl adds 0.6g dinaphthylene disulfonic acid yellow soda ash in the fluorescent material that adheres to gelatin then.Be preparation pigment dispersive solution, 0.04g dinaphthylene disulfonic acid yellow soda ash and 100g pigment (CoOnAl
2O
3) mix, solution with water stirs 48 hours to disperse pigment.
Pigment dispersive solution is added to the fluorescent material that adheres to gelatin, makes to be added with the 2g pigment among the Cl by 100g ZnS:Ag.The pH value of regulating mixed solution with acetate is lower than 4.0.The fluorescent material that adheres to pigment washes with water, anhydrates, and scribbles the fluorescent material 25 hours of pigment 110 ℃ of following dryings.
Comparative example 1
100gY
2O
2S:Eu, 0.12g α-Fe
2O
3Mix with the 0.33g Sudan Gum-arabic, and gelatin is added to this mixed solution.PH value with the acetate regulator solution is 4.0.The fluorescent material that adheres to pigment is cooled to 5 ℃, and glutaraldehyde adds in the solution as stiffening agent.Solid phase prod is washed with water, anhydrates, and scribbles the fluorescent material solid 36 hours of pigment 120 ℃ of following dryings.
Comparative example 2
100g ZnS:Ag, Cl, 0.12g CoOnAl
2O
3Mix with the 0.3g Sudan Gum-arabic, and the 0.3g gelatin is added to this mixed solution.Regulating this pH value of solution value with acetate is 4.0.The fluorescence liquid that adheres to pigment is cooled to 8 ℃, and glutaraldehyde adds in the solution as stiffening agent.Solid phase prod washes with water, anhydrates, and scribbles the fluorescent material solid 36 hours of pigment 120 ℃ of following dryings.
From routine 1-2 and comparative example 1-2 as can be seen, the fluorescent material that scribbles pigment according to the present invention and the routine fluorescent material that scribbles pigment is compared and is shown the brightness that exceeds 5-7%.Therefore, phosphor material powder of the present invention and conventional phosphor material powder mutually specific energy with 2～3wt% and less pigment preparation.In addition, phosphor material powder according to the present invention can form more regular and uniform phosphor powder layer on the CRT screen board.
The application requires the right of priority of the korean patent application No.97-68787 of application on December 15th, 1997, and its content is quoted as a reference here.Although the present invention with reference to preferred embodiment detailed description, those skilled in the art still can understand not breaking away under the spirit and scope of the invention that claims propose can make various improvement and replacement.
Claims (6)
1. method of producing fluorescent material may further comprise the steps:
Naked fluorescent material and water are mixed, binding agent is added in the mixture of naked phosphor material powder and water, obtain to adhere to the fluorescence liquid of binding agent;
The first surface promoting agent is added in the fluorescence liquid that adheres to binding agent;
The pigment dispersion soln that will comprise second surface promoting agent and pigment is added in the fluorescence liquid that adheres to binding agent, to obtain to scribble the fluorescent material of pigment; With
Washing and the dry fluorescent material that scribbles pigment.
2. according to the process of claim 1 wherein that first and second tensio-active agents are independently selected from by dinaphthylene disulfonic acid yellow soda ash, the group that vinylformic acid emulsion and Sudan Gum-arabic constitute.
3. according to the process of claim 1 wherein that the amount of first surface promoting agent is the weight that the naked phosphor material powder of per 100 parts of weight has 0.2-0.8 part.
4. produce according to the process of claim 1 wherein that the pigment dispersion soln reaches more than 48 hours by ball milling second surface promoting agent and pigment in water.
5. according to the process of claim 1 wherein that the amount of second surface promoting agent is the weight that the pigment of per 100 parts of weight has 0.02-0.08 part.
6. according to the method for claim 1, comprise that also the pH value of regulating the fluorescence liquid that adheres to binding agent is to the step that is lower than 4.0.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR68787/97 | 1997-12-15 | ||
| KR1019970068787A KR100250858B1 (en) | 1997-12-15 | 1997-12-15 | Method for manufacturing phosphor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1228463A true CN1228463A (en) | 1999-09-15 |
Family
ID=19527317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98127153A Pending CN1228463A (en) | 1997-12-15 | 1998-12-15 | Method for producing phosphor material |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100250858B1 (en) |
| CN (1) | CN1228463A (en) |
| TW (1) | TW459033B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100526418C (en) * | 2005-05-26 | 2009-08-12 | 中国科学院长春光学精密机械与物理研究所 | Fluorescent powder film coating material for plasma display device and its preparation method |
-
1997
- 1997-12-15 KR KR1019970068787A patent/KR100250858B1/en not_active IP Right Cessation
-
1998
- 1998-12-14 TW TW087120700A patent/TW459033B/en active
- 1998-12-15 CN CN98127153A patent/CN1228463A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100526418C (en) * | 2005-05-26 | 2009-08-12 | 中国科学院长春光学精密机械与物理研究所 | Fluorescent powder film coating material for plasma display device and its preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100250858B1 (en) | 2000-04-01 |
| KR19990049790A (en) | 1999-07-05 |
| TW459033B (en) | 2001-10-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |