CN1086001C - Slurry composition of fluorescent layer of color CRT - Google Patents
Slurry composition of fluorescent layer of color CRT Download PDFInfo
- Publication number
- CN1086001C CN1086001C CN97117056A CN97117056A CN1086001C CN 1086001 C CN1086001 C CN 1086001C CN 97117056 A CN97117056 A CN 97117056A CN 97117056 A CN97117056 A CN 97117056A CN 1086001 C CN1086001 C CN 1086001C
- Authority
- CN
- China
- Prior art keywords
- fluorescent screen
- spp
- ray tube
- cathode ray
- mentioned
- 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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Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
- H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
- H01J29/327—Black matrix materials
-
- 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
-
- 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
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/22—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel
- H01J29/225—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel photosensitive adhesive
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Luminescent Compositions (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Composition, in crushed form, is used for making fluorescent layer of fluorescent screen in coloured cathode ray tube, in which screen consists of glass panel with moulded black layers on it; fluorescent layer formed by UV irradiation of fluorescent layer, crossing openings of perforated mask between moulded layers; layer of organic film on fluorescent layer; and reflecting metal layer. The composition is prepared by mixing fluorescent material; pure water; acetal compound (produced from copolymer of vinyl alcohol, vinyl acetate, and salt of 4-{2-(4-formyl)-phenyl}-1-methyl-1-pyridinium (SPP)); and an emulsifier.
Description
The present invention relates to the fluorescent screen of color cathode ray tube, be particularly related to the SPP goods of highly sensitive sensitizer when being suitable for the face that forms fluor, can shorten the time shutter of fluorescent screen, the fluorescent screen slurry of the color cathode ray tube of the height of raising cathode tube forms thing.
In the past, the face of color cathode ray tube, as shown in Figure 1, on the medial surface of face glass (1), apply black matrix film (2) at certain intervals, coating in the above can be by the fluorescent screen of the redness (3R) of electron beam shooting, green (3G), blue look (3B).Drawing reference numeral 4 expression metal oxide films.
The manufacture method of this face is the photoresist liquid that is covered equably on face glass (1), insert shadow mask, after carrying out suitable green, blue look, red tricolor exposing, part with pure water development post-exposure, because the reaction of the photo-hardening of photosensitive polymer and photocrosslinking agent, become insoluble and can not left behind to video picture.
Therefore, after forming the black matrix layer of non-luminous absorbing material, handle with aqueous oxidizing agent solution etc., the photoresist that photoresponse takes place by exposure expands, after the pure water development, can be made into quite red (R), green (G), blue look (B) trichromatic black matrix film (2).
With the polyvinyl alcohol (PVA) of green luminophore and photosensitive polymer and sodium dichromate 99 (SDC) or the ammonium dichromate (ADC) and the tensio-active agent etc. of increase and decrease agent, stir more than 12 hours with pure water, make form slurry, this slurry is injected into the inner face of face glass (1), at this above film, launch, expose after the recovery, drying process.
By shadow mask hole, select ultraviolet during exposure, shine on the fluorescent screen from the exposure unit light source.At this moment, just illuminated portion carries out the photo-hardening reaction, and the crosslinked binding by between polymer and sensitizing agent has insoluble for glassware for drinking water.Then, after developing in pure water, the part that photo-hardening does not take place is removed from the inner face of face glass (1), so formed desirable green fluorescence film (3G), also can form blue fluorescent screen (3B) and red fluorescent screen (3R) with same procedure.
After forming organic film on this fluorescent screen, form metallic reflective coating (4) smoothly.This organic film in high temperature (450 ℃) thermolysis down, is emitted with gas.So that form metallic reflective coating (4) smoothly.
; polyvinyl alcohol (PVA) is the material with light intensity and the proportional characteristic of product of time shutter when reacting with photo-hardening; because with SDC or ADC is crosslinked combines; have insoluble for glassware for drinking water; the photo-hardening speed of response is slow; need the time shutter long; must use the strong light source of energy; therefore, on the productivity of product and expense, have problems, in addition; for SDC and ADC; because residual public hazards chromium substance composition on fluorescent screen hinders light-emitting phosphor, exist the problem of the height reduction of cathode tube.
The object of the present invention is to provide the sensitivity that can improve the fluorescent screen slurry, shorten the time shutter, to the chromium component of environmentally hazardous substance, the fluorescent screen of the cathode tube of the luminous height of increase fluorescent surface does not form thing.
In order to achieve the above object, it is to form black matrix film on face glass that the fluorescent screen of color cathode ray tube of the present invention forms thing, the ultraviolet ray of shining by means of passing shadow mask hole, at the intermembranous formation fluorescent screen of above-mentioned black matix, after forming organic film on the above-mentioned fluorescent screen, in the face structure of the color cathode ray tube of formation metallic reflective coating, the slurry that forms above-mentioned fluorescent screen forms fluor, pure water, SPP and dispersant.
Fig. 1 is the cross-section structure of general face.
Fig. 2 is the structure iron of the face of coating fluorescent screen.
Fig. 3 is the chemical structural drawing that is applicable to SPP of the present invention.
Fig. 4 is the figure of expression reaction mechanism of the present invention.
Below describe the preferred embodiments of the invention in detail, and describe embodiment with reference to the accompanying drawings.
In fluorescent screen slurry of the present invention forms, be to use water soluble light-sensitive resin SPP[chemical name: the multipolymer of vinyl alcohol-vinyl acetate and 4-{2-(4-formyl) phenyl }-1-picoline salt acetalation material] replace PVA (polyvinyl alcohol) and existing sensitizing agent in the employed in the past PVA-Cr series, as sodium dichromate 99 (SDC) or ammonium dichromate (ADC), mix the fluorescent screen slurry of the coating that forms at face glass (1) inner face with fluor, pure water, dispersion agent etc.
The SPP chemical structural formula as shown in Figure 3, the mol ratio of l in the structural formula: m: n is (1.0～4.5): (70.0～98.0): (1.0～20.0).
Promptly, on face glass (1) inner face that forms black matrix film (2), with the solid shape proportion by subtraction of SPP and vinylformic acid emulsion and fluor is to be combined into slurry at 2: 1: 30, stir after 24 hours, be injected into for several times the inner face of face glass (1), after finishing drying, exposure imaging operation, can confirm on face as shown in Figure 2, to form the fluorescent screen that does not contain chromium component.Estimate fluorescent screen time shutter and white brightness, obtain following result.
*Exposure=illumination (μ A) * time (second)
*White brightness (FL)
| Sample | Product in the past | Product of the present invention | ||
| Illumination | Time | Illumination | Time | |
| Sample 1 | 70 | 75 | 55 | 45 |
| | 80 | 70 | 50 | 50 |
| Sample 3 | 75 | 70 | 55 | 45 |
| Sample 4 | 85 | 65 | 55 | 40 |
| Sample 5 | 80 | 70 | 50 | 45 |
| On average | 78 | 70 | 53 | 45 |
| Sample | Product in the past | Product of the present invention |
| Sample 1 | 26.5 | 27.9 |
| | 27.0 | 28.2 |
| Sample 3 | 26.8 | 28.0 |
| Sample 4 | 26.4 | 28.5 |
| Sample 5 | 27.3 | 28.3 |
| On average | 26.8 | 28.2 |
The cathode tube of [condition determination]-evaluation: 14 inches
Impressed voltage: 24KV
Additional power source: 300 μ A
Among the present invention, using molecular weight is 500～4,000, and saponification deg is 88% SPP.If molecular weight is below 500, exist that viscosity is low, consumption is big, the problem that operability is low.If more than 4,000, viscosity uprises, and is dispersed low, sneaks into fluorescent screen, produces residual silk.
In addition, be added on the solid shape amount of vinylformic acid emulsion among the SPP or tensio-active agent, be suitable (SPP 10% benchmark) with 0.3～1.5%.If below 0.3%, dispersed low, film is thick, the residual silk that mostly occurs, if more than 1.5%, the film rate that expands reduces, and can not develop, and fluorescent screen is sneaked into impurity, and colour mixture takes place, and film quality reduces.
The reaction mechanism that forms fluorescent screen of the present invention as shown in Figure 4.
As shown in Figure 4,, do not generate inorganics, only constitute, in manufacturing process, emit by fusing operation (350～450 ℃) thermolysis by organism for the reaction of the photo-hardening of SPP, thus in fluorescent screen not residual chromium component, can prevent brightness reduction and environmental pollution.
For the ordinary skill of present technique field, apparent, under the situation that does not break away from the spirit or scope of the present invention, can carry out numerous variations and change for fluorescent screen slurry composition of the present invention.So, the present invention includes the protection domain that belongs to claims or these changes and the change of its equivalent.
Claims (4)
1. the fluorescent screen slurry of color cathode ray tube forms thing, the structure of the face of its color cathode ray tube comprises a panel, on the liquid face glass formed black matrix film, by means of passing ultraviolet ray that shadow mask hole shines and the intermembranous formed fluorescent screen of above-mentioned black matix, on above-mentioned fluorescent screen formed organic film and formed thereafter metallic reflective coating, it is characterized in that, the slurry that forms above-mentioned fluorescent screen forms fluor, pure water, SPP and dispersant, and described SPP is shown below.
2. the fluorescent screen slurry of the described color cathode ray tube of claim 1 forms thing, and the molecular weight that it is characterized in that above-mentioned SPP is 500～4, and 000.
3. the fluorescent screen slurry of the described color cathode ray tube of claim 1 forms thing, it is characterized in that the mol ratio of l: m: n in the composition of above-mentioned SPP is (1.0～4.5): (70.0～98.0): (1.0～20.0).
4. the fluorescent screen slurry of the described color cathode ray tube of claim 1 forms thing, it is characterized in that the amount of above-mentioned solid shape dispersion agent when SPP 10% benchmark is 0.3～1.5%.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR199645665 | 1996-10-14 | ||
| KR1996-45665 | 1996-10-14 | ||
| KR1019960045665A KR100229316B1 (en) | 1996-10-14 | 1996-10-14 | A phosphor layer slurry compound of color crt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1179618A CN1179618A (en) | 1998-04-22 |
| CN1086001C true CN1086001C (en) | 2002-06-05 |
Family
ID=19477310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97117056A Expired - Fee Related CN1086001C (en) | 1996-10-14 | 1997-10-13 | Slurry composition of fluorescent layer of color CRT |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR100229316B1 (en) |
| CN (1) | CN1086001C (en) |
| FR (1) | FR2754635B1 (en) |
| ID (1) | ID18525A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100268733B1 (en) * | 1998-05-15 | 2000-11-01 | 김순택 | How to form a black matrix |
| KR100300326B1 (en) * | 1999-03-30 | 2001-09-22 | 김순택 | Phosphor slurry composition for field emission display |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0081680A2 (en) * | 1981-12-11 | 1983-06-22 | Kabushiki Kaisha Toshiba | Composition for and method of making picture tube fluorescent screen |
| JPH0790253A (en) * | 1993-09-27 | 1995-04-04 | Futaba Corp | Photosensitive composition for forming fluorescent surface |
| CN1111807A (en) * | 1993-10-15 | 1995-11-15 | 双叶电子工业株式会社 | Phosphor slurry for use in producing a low-velocity electron-excited phosphor layer in a fluorescent-display device... |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56147804A (en) * | 1980-04-17 | 1981-11-17 | Agency Of Ind Science & Technol | Photosensitive resin material for forming fluorescent surface of cathode ray tube |
| JPS5949278A (en) * | 1982-09-14 | 1984-03-21 | Toshiba Corp | Formation of fluorescent face of color picture tube |
-
1996
- 1996-10-14 KR KR1019960045665A patent/KR100229316B1/en not_active IP Right Cessation
-
1997
- 1997-10-13 CN CN97117056A patent/CN1086001C/en not_active Expired - Fee Related
- 1997-10-13 ID IDP973419A patent/ID18525A/en unknown
- 1997-10-14 FR FR9712834A patent/FR2754635B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0081680A2 (en) * | 1981-12-11 | 1983-06-22 | Kabushiki Kaisha Toshiba | Composition for and method of making picture tube fluorescent screen |
| JPH0790253A (en) * | 1993-09-27 | 1995-04-04 | Futaba Corp | Photosensitive composition for forming fluorescent surface |
| CN1111807A (en) * | 1993-10-15 | 1995-11-15 | 双叶电子工业株式会社 | Phosphor slurry for use in producing a low-velocity electron-excited phosphor layer in a fluorescent-display device... |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2754635B1 (en) | 2005-01-14 |
| ID18525A (en) | 1998-04-16 |
| CN1179618A (en) | 1998-04-22 |
| KR100229316B1 (en) | 1999-11-01 |
| KR19980027013A (en) | 1998-07-15 |
| FR2754635A1 (en) | 1998-04-17 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |