CN1147902C - Process for manufacturing fluorescent screen of color CRT - Google Patents
Process for manufacturing fluorescent screen of color CRTInfo
- Publication number
- CN1147902C CN1147902C CNB021145261A CN02114526A CN1147902C CN 1147902 C CN1147902 C CN 1147902C CN B021145261 A CNB021145261 A CN B021145261A CN 02114526 A CN02114526 A CN 02114526A CN 1147902 C CN1147902 C CN 1147902C
- Authority
- CN
- China
- Prior art keywords
- dispersion liquid
- picture tube
- fluorescent material
- color picture
- powder
- 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.)
- Expired - Fee Related
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Images
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Luminescent Compositions (AREA)
Abstract
The present invention discloses a method for preparing a fluorescent screen of a color picture tube, which is formed by using fluorescent powder slurry used for screening the color picture tube and proportionally mixing pigment dispersion liquid and fluorescent powder dispersion liquid. The process comprises the following steps: proportionally mixing red, green and blue pigment dispersion liquid and blue fluorescent powder dispersion liquid; preparing the fluorescent powder slurry used for screening the color picture tube after thoroughly stirring; finally forming a fluorescent film. The structure of the fluorescent film is that the periphery of the fluorescent powder is surrounded by pigment, and the whole looks like colored fluorescent powder. Additionally, a certain amount of pigment is uniformly dispersed in the slurry among the powder to play the function of a filtering film. Compared with the original color picture tube, the contrast degree of the color picture tube with the fluorescent film prepared by the present invention is improved by 25%. The color picture tube is equivalent to a color picture tube using a filtering film technique and an adhesion-increasing structure, a filtering film coating technique and corresponding devices are not needed, and a new fluorescent powder coloring technique is not needed.
Description
One, affiliated field
The invention belongs to the manufacturing technology of color picture tube, particularly a kind of fluoroscopic manufacture method of color picture tube of the contrast that is used to improve color picture tube.
Two, background technology
The contrast of color picture tube is meant the ratio of brightness (bright field brightness) with the brightness (details in a play not acted out on stage, but told through dialogues brightness) of the part that is not excited of the part that is excited above the luminescent screen for colour display tube.It is an important parameter weighing color picture tube picture quality, and this ratio is the bigger the better.The method that improves the color picture tube contrast at present has: (1) adopts bulky grain fluorescent material to improve its luminous efficiency; (2) use the glass of low transmission to shield, increase the absorptivity of external light; (3) implement the black matrix coating technology, to reduce the reflective surface area of surround lighting; (4) painted fluorescent material technology.Wherein painted fluorescent material technology is used more extensive.
So-called painted fluorescent material technology is after operations such as the preparation of ZnS fecula and powder burn till, and increases a painted operation, just coats a layer pigment 2 in fluorescent material 1 outside of burning till, and for example wraps one deck red pigment outside the fluorescent material that glows; One deck blue pigment is wrapped in fluorescent material outside at blue light-emitting, referring to shown in Figure 1.The characteristics of this painted fluorescent material are to utilize coat of colo(u)r to come in the absorbing environmental light and the different coloured light composition of itself color, only reflection and the identical coloured light composition of itself color.The content of red pigment and blue pigment is respectively 0.1% and 3.8% in the painted originally fluorescent material.In order to improve contrast, to reduce reflectivity, the scientific research personnel has developed the novel painted fluorescent material that strengthens the pigment adhesion amount, and the red pigment of coating and the content of blue pigment are risen to 0.3% and 4.5% respectively at present.Also have also coating viridine green on the green emitting phosphor, with further reduction reflectivity.This Technology Need is developed corresponding fluorescent material coloring process.
There is a colored picture tube manufacturing firm to develop a kind of filter coating technology recently, as shown in Figure 2, it is to insert filter coating between phosphor screen inner surface and phosphor powder layer, having it to come that surround lighting is carried out selectivity absorbs, the manufacture process of this luminescent screen for colour display tube not only will increase the filter coating coated technique, but also need acquire corresponding apparatus, the result rises cost.
Three, summary of the invention
Defective or deficiency according to above-mentioned prior art existence, the objective of the invention is, a kind of phosphor screen manufacture method that can improve the color picture tube contrast is provided, neither need the new coloring process of fluorescent material manufactory exploitation, also color picture tube factory does not develop new technology, acquires new equipment etc. in being coated with the screen process.
To achieve these goals, the technical solution used in the present invention is a kind of compound method that color picture tube is coated with the fluorescent material powder slurry of screen usefulness that relates to, be to be mixed in proportion by two parts such as dispersible pigment dispersion and fluorescent material dispersion liquids, dispersible pigment dispersion and fluorescent material dispersion liquid include blueness, green and red three kinds; Dispersible pigment dispersion is made up of pigment, dispersant, polyvinyl alcohol and pure water, and the fluorescent material dispersion liquid is made up of fluorescent material, sensitising agent, dispersant and pure water.Both concrete prescriptions are as follows:
The blue pigment dispersion liquid
Al
2O
3-CoO 10％
Dispersant PS-2 0.2%
Polyvinyl alcohol 1.9%
The pure water remainder part
The blue colour fluorescent powder dispersion liquid
Fluorescent material 25%
Polyvinyl alcohol 1.9%
Ammonium dichromate 0.16%
Acrylic resin 0.46%
Surfactant 0.1%
The pure water remainder part
The viridine green dispersion liquid
CoO-Cr
2O
3-TiO
2-Al
2O
3 3％
Dispersant PS-2 0.07%
Polyvinyl alcohol 1.9%
The pure water remainder part
The green emitting phosphor dispersion liquid
Fluorescent material 25%
Polyvinyl alcohol 1.9%
Ammonium dichromate 0.17%
Acrylic resin 0.79%
Surfactant 0.14%
The pure water remainder part
The red pigment dispersion liquid
Dispersant 08 0.07%
Polyvinyl alcohol 1.8%
The pure water remainder part
The red fluorescence powder dispersion liquid
Fluorescent material 30%
Polyvinyl alcohol 1.8%
Ammonium dichromate 0.15%
Acrylic resin 0.92%
Surfactant 0.2%
The pure water remainder part
Wherein used fluorescent material is non-staining fluorescent material.
The technical process of above-mentioned prescription is:
1) blue pigment dispersion liquid and blue colour fluorescent powder dispersion liquid are pressed 12.5: 100 mixed, make color picture tube through abundant stirring and be coated with screen blue colour fluorescent powder powder slurry; Red pigment dispersion liquid and red fluorescence powder dispersion liquid are pressed 6: 100 mixed, make color picture tube through abundant stirring and are coated with screen red fluorescence powder powder slurry; Viridine green dispersion liquid and green emitting phosphor dispersion liquid are pressed 6: 100 mixed, make color picture tube through abundant stirring and are coated with screen green emitting phosphor powder slurry;
2) clean the glass screen that has formed black matrix; Apply pre-coating solution then;
3) after to be dried, apply blue colour fluorescent powder fluorescent material powder slurry thereon;
4) drying, exposure, development form the blue-fluorescence film;
Other characteristics of the present invention are described Al
2O
3The average grain diameter 100nm-200nm of-CoO; Described CoO-Cr
2O
3-TiO
2-Al
2O
3Average grain diameter 105nm.
Can form green fluorescent membrane and red fluorescence film by above-mentioned same process process; The final fluorescent film structure that forms is such: surrounded by pigment around the fluorescent material, be equivalent to a painted fluorescent material taken as a whole, a certain amount of pigment that evenly is scattered here and there in the slurry between powder and the powder in addition plays a part filter coating.
The color picture tube of the fluorescent film structure that the present invention makes, contrast than original color picture tube improves 25%, suitable with the color picture tube that adopts filter coating technology and increasing adhesion amount structure, but it need not to increase filter coating coated technique and corresponding apparatus, does not also need new fluorescent material coloring process.
Four, description of drawings
Fig. 1 is that painted fluorescent material technology is made the color picture tube structural representation; 1 is the fluorescent material that burns till among the figure; 2 pigment for coating; 3 are the glass screen; 5 is black matrix; 7 is the aluminium film.
Fig. 2 be the filter coating technology make the color picture tube structural representation; 3 are the glass screen among the figure; 4 is pigment; 5 is black matrix; 6 is fluorescent material; 7 is the aluminium film.
Fig. 3 is that the present invention makes the color picture tube structural representation; 3 are the glass screen among the figure; 4 is pigment; 5 is black matrix; 6 is fluorescent material; 7 is the aluminium film.
Five, embodiment
According to technical scheme of the present invention, according to following formulated red, green, blue dispersible pigment dispersion and red, green, blue look fluorescent material dispersion liquid, red pigment dispersion liquid and red fluorescence powder dispersion liquid are pressed 6: 100 mixed then, make color picture tube through abundant stirring and are coated with screen red fluorescence powder powder slurry; Viridine green dispersion liquid and green emitting phosphor dispersion liquid are pressed 6: 100 mixed, make color picture tube through abundant stirring and are coated with screen green emitting phosphor powder slurry; Blue pigment dispersion liquid and blue colour fluorescent powder dispersion liquid are pressed 12.5: 100 mixed, make color picture tube through abundant stirring and are coated with screen blue colour fluorescent powder powder slurry;
1. red pigment dispersion liquid:
FeO
3Analyze pure 2%
Dispersant 08 analyzes pure 0.07%
Polyvinyl alcohol analyzes pure 1.8%
The pure water remainder part
The red fluorescence powder dispersion liquid:
Red non-staining fluorescent material analyzes pure 30%
Polyvinyl alcohol analyzes pure 1.8%
Ammonium dichromate analyzes pure 0.15%
Acrylic resin analyzes pure 0.92%
Surfactant analyzes pure 0.2%
The pure water remainder part
2. viridine green dispersion liquid:
CoO-Cr
2O
3-TiO
2-Al
2O
3Average grain diameter 105nm analyzes pure 3%
Dispersant PS-2 analyzes pure 0.07%
Polyvinyl alcohol analyzes pure 1.9%
The pure water remainder part
The green emitting phosphor dispersion liquid:
Green non-staining fluorescent material 25%
Polyvinyl alcohol analyzes pure 1.9%
Ammonium dichromate analyzes pure 0.17%
Acrylic resin analyzes pure 0.79%
Surfactant analyzes pure 0.14%
The pure water remainder part
3. blue pigment dispersion liquid:
Al
2O
3-CoO average grain diameter 100nm-200nm 10%
Dispersant PS-2 analyzes pure 0.2%
Polyvinyl alcohol analyzes pure 1.9%
The pure water remainder part
The blue colour fluorescent powder dispersion liquid:
Blue non-staining fluorescent material 25%
Polyvinyl alcohol analyzes pure 1.9%
Ammonium dichromate analyzes pure 0.16%
Acrylic resin analyzes pure 0.46%
Surfactant analyzes pure 0.1%
The pure water remainder part
Al
2O
3The average grain diameter of-CoO is between the 100nm-200nm, as 100nm, and 120nm, 140nm, 160nm, 180nm, 200nm can reach purpose of the present invention; CoO-Cr
2O
3-TiO
2-Al
2O
3Average grain diameter is 105nm.
The color picture tube of the fluorescent film structure that present embodiment is made is than the contrast raising 25% of original color picture tube, suitable with the color picture tube that adopts filter coating technology and increasing adhesion amount structure.Compare with the filter coating structure manufacturing process of prior art, can save resources such as device fabrication and equipment loss expense and kinetic energy, pure water.
Claims (2)
1. the fluoroscopic manufacture method of a color picture tube, it is characterized in that: color picture tube is coated with the preparation of the fluorescent material powder slurry of screen usefulness, mixed in proportion by two parts such as dispersible pigment dispersion and fluorescent material dispersion liquids, above-mentioned dispersible pigment dispersion and fluorescent material dispersion liquid include blueness, green and red three kinds; Dispersible pigment dispersion is made up of pigment, dispersant, polyvinyl alcohol and pure water, and the fluorescent material dispersion liquid is made up of fluorescent material, sensitising agent, dispersant and pure water; Concrete prescription is as follows:
The blue pigment dispersion liquid
Al
2O
3-CoO?10％
Dispersant PS-2 0.2%
Polyvinyl alcohol 1.9%
The pure water remainder part
The blue colour fluorescent powder dispersion liquid
Fluorescent material 25%
Polyvinyl alcohol 1.9%
Ammonium dichromate 0.16%
Acrylic resin 0.46%
Surfactant 0.1%
The pure water remainder part
The viridine green dispersion liquid
CoO-Cr
2O
3-TiO
2-Al
2O
3 3％
Dispersant PS-2 0.07%
Polyvinyl alcohol 1.9%
The pure water remainder part
The green emitting phosphor dispersion liquid
Fluorescent material 25%
Polyvinyl alcohol 1.9%
Ammonium dichromate 0.17%
Acrylic resin 0.79%
Surfactant 0.14%
The pure water remainder part
The red pigment dispersion liquid
FeO
3 2％
Dispersant 08 0.07%
Polyvinyl alcohol 1.8%
The pure water remainder part
The red fluorescence powder dispersion liquid
Fluorescent material 30%
Polyvinyl alcohol 1.8%
Ammonium dichromate 0.15%
Acrylic resin 0.92%
Surfactant 0.2%
The pure water remainder part
Wherein used fluorescent material is non-staining fluorescent material;
Above-mentioned prescription is used for color picture tube and is coated with the screen operation, and its technical process is:
1) blue pigment dispersion liquid and blue colour fluorescent powder dispersion liquid are pressed 12.5: 100 mixed, make color picture tube through abundant stirring and be coated with screen blue colour fluorescent powder powder slurry; Red pigment dispersion liquid and red fluorescence powder dispersion liquid are pressed 6: 100 mixed, make color picture tube through abundant stirring and are coated with screen red fluorescence powder powder slurry; Viridine green dispersion liquid and green emitting phosphor dispersion liquid are pressed 6: 100 mixed, make color picture tube through abundant stirring and are coated with screen green emitting phosphor powder slurry;
2) clean the glass screen that has formed black matrix; Apply pre-coating solution then;
3) after to be dried, apply blue colour fluorescent powder fluorescent material powder slurry thereon;
4) drying, exposure, development form the blue-fluorescence film;
Can form green fluorescent membrane and red fluorescence film by above-mentioned same process process; The final fluorescent film structure that forms is: surrounded by pigment around the fluorescent material, be equivalent to a painted fluorescent material taken as a whole, a certain amount of pigment that evenly is scattered here and there in the slurry between powder and the powder in addition plays a part filter coating.
2. the fluoroscopic manufacture method of color picture tube according to claim 1 is characterized in that: described Al
2O
3The average grain diameter 100nm-200nm of-CoO; Described CoO-Cr
2O
3-TiO
2-Al
2O
3Average grain diameter 105nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021145261A CN1147902C (en) | 2002-04-19 | 2002-04-19 | Process for manufacturing fluorescent screen of color CRT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021145261A CN1147902C (en) | 2002-04-19 | 2002-04-19 | Process for manufacturing fluorescent screen of color CRT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1381861A CN1381861A (en) | 2002-11-27 |
| CN1147902C true CN1147902C (en) | 2004-04-28 |
Family
ID=4743142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021145261A Expired - Fee Related CN1147902C (en) | 2002-04-19 | 2002-04-19 | Process for manufacturing fluorescent screen of color CRT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147902C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101376804B (en) * | 2008-09-28 | 2011-04-20 | 江苏博睿光电有限公司 | PDP fluorescent powder pulp for spraying and preparation thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323415C (en) * | 2004-03-08 | 2007-06-27 | 彩虹集团电子股份有限公司 | Precoat liquid for colour kinescope and manufcturing method of its film |
| KR20090003675A (en) * | 2007-07-03 | 2009-01-12 | 엘지전자 주식회사 | Plasma display panel |
| CN101592617B (en) * | 2009-05-22 | 2011-01-05 | 彩虹集团电子股份有限公司 | Method for detecting compatibility of CCFL fluorescent powder |
-
2002
- 2002-04-19 CN CNB021145261A patent/CN1147902C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101376804B (en) * | 2008-09-28 | 2011-04-20 | 江苏博睿光电有限公司 | PDP fluorescent powder pulp for spraying and preparation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1381861A (en) | 2002-11-27 |
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Owner name: IRICO GROUP ELECTRONICS CO., LTD. Free format text: FORMER OWNER: CAIHONG COLOUR KINESCOPE GENERAL FACTORY Effective date: 20041119 |
|
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| TR01 | Transfer of patent right |
Effective date of registration: 20041119 Address after: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Patentee after: IRICO Group Electronics Co., Ltd. Address before: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Patentee before: Caihong Color CRT General Factory |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040428 Termination date: 20140419 |